subject:(beach dynamics)

University of New South Wales

1. McCarroll, Robert. Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard.

Degree: Biological, Earth & Environmental Sciences, 2014, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/53937 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12647/SOURCE02?view=true

► Embayed beaches differ from open coast beaches due to the control exerted by headlands, leading to alongshore gradients in wave height, surfzone width and beach… (more)

▼ Embayed beaches differ from open coast beaches due to the control exerted by headlands, leading to alongshore gradients in wave height, surfzone width and beach state. Circulation and morphodynamic behaviour of embayed beaches are poorly understood. This study involves observations at three embayed beaches around Sydney, Australia. Methods involve Lagrangian observations of currents and bathymetric surveys.At Whale Beach (600 m long), Lagrangian observations of an entire embayment, including headland rip currents, are presented. Headland geometry and wave direction were found to influence rip current trajectories, and degree of bathymetric non-uniformity correlated with current velocities. Surfzone exit rates increased along the beach from the protected headland to the exposed end.At Bondi Beach (850 m long), observations of morphodynamic response to storm-groups over a three week period are presented. Offshore significant wave heights reached 5.6 m, with a 10-day average >3 m. A mega-rip developed at the exposed headland, while the protected end maintained a low-tide-terrace. Alongshore non-uniformity was found to decrease near the shoreline, and increase in the outer-surfzone and nearshore.At Shelly Beach (2.3 km long), the rip current hazard was investigated, testing the efficacy of 'float' and 'swim parallel' strategies. Human subjects entered three rip channels with Lagrangian measurements of background flow. Swimming parallel was found to be a shorter duration strategy, with lower failure rate. However both strategies failed in some instances and neither can be recommended as a sole preference.Finally, all data are analysed to investigate the degree of bathymetric control on very low frequency (~10 min) current variability due to surfzone eddies. A classification scheme is introduced ranging from: (i) strong bathymetric control where currents exhibit high mean velocities, with velocity pulsation or rip cell oscillations, to (ii) no bathymetric control where randomly directed surfzone eddies occur on planar bars. This study broadens understanding of several aspects of embayed beach dynamics. In particular, it demonstrates that alongshore wave-height and beach state gradients on embayed beaches will force alongshore changes in: (i) current velocities, trajectories and variability; (ii) cross-shore exchange; (iii) morphodynamic response to storms; and (iv) the level of hazard to bathers. Advisors/Committee Members: Brander, Robert, Biological, Earth & Environmental Sciences, Faculty of Science, UNSW, Turner, Ian, Water Research Laboratory, Faculty of Engineering, UNSW.

Subjects/Keywords: Beach safety; Coastal processes; Surf zone dynamics; Intermediate beaches

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APA (6^th Edition):

McCarroll, R. (2014). Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/53937 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12647/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

McCarroll, Robert. “Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard.” 2014. Doctoral Dissertation, University of New South Wales. Accessed January 25, 2021. http://handle.unsw.edu.au/1959.4/53937 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12647/SOURCE02?view=true.

MLA Handbook (7^th Edition):

McCarroll, Robert. “Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard.” 2014. Web. 25 Jan 2021.

Vancouver:

McCarroll R. Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard. [Internet] [Doctoral dissertation]. University of New South Wales; 2014. [cited 2021 Jan 25]. Available from: http://handle.unsw.edu.au/1959.4/53937 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12647/SOURCE02?view=true.

Council of Science Editors:

McCarroll R. Field observations of embayed beaches: Lagrangian circulation, morphodynamics and the rip current hazard. [Doctoral Dissertation]. University of New South Wales; 2014. Available from: http://handle.unsw.edu.au/1959.4/53937 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:12647/SOURCE02?view=true

Virginia Tech

2. Cohen, Jonathan Barry. Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York.

Degree: PhD, Fisheries and Wildlife Sciences, 2005, Virginia Tech

URL: http://hdl.handle.net/10919/27414

► Storm-created nesting habitat and low wave energy moist sediment habitat (MOSH), such as intertidal sandflats, have long been considered important to the recovery of the… (more)

▼ Storm-created nesting habitat and low wave energy moist sediment habitat (MOSH), such as intertidal sandflats, have long been considered important to the recovery of the piping plover (Charadrius melodus), a federally threatened shorebird. Beach renourishment is a common practice on the U.S. Atlantic Coast for the protection of human property from storms, but it also prevents normal MOSH formation. We examined factors limiting piping plover nesting pair density and reproductive output on Atlantic Barrier Islands, 2001-2004, including one site that had been breached by a storm in 1992, and subsequently repaired and renourished by the U.S. Army Corps of Engineers. We also investigated the short-term impact of beach renourishment at these sites. Number of pairs at a site increased with beach area. Pair density increased with MOSH availability at the site level. Home range size increased as the distance from plover nests to MOSH increased. Home range size was smaller for plovers with higher foraging rates in the territory-establishment period, but this effect was most likely independent of distance to MOSH. Reproductive output was not apparently related to availability of MOSH to adults or broods, and was limited by predation. Habitat widths, prey abundance, and brood habitat selection changed at two of our sites after renourishment. However, similar changes occurred in reference areas. Other research shows that in addition to long-term loss of storm-created features, beach stabilization can lead to loss of habitat and low reproductive success due to human development and an increased presence of introduced predators. Management for recovery of this species should thus include permitting natural storm-mediated habitat creation to occur where feasible. However, since we found no direct negative short-term impact of renourishment on prey or habitat availability, habitat restoration via renourishment of eroded beaches could be a viable strategy for plover recovery, if negative indirect short and long-term effects are mitigated. Restoration projects should include restoration or creation of MOSH adjacent to nesting habitat, because MOSH attracts a high density of pairs and to offset long-term loss of storm-created habitat. Human disturbance and predation must also be controlled at restoration sites. Advisors/Committee Members: Fraser, James D. (committeechair), Berkson, James M. (committee member), Kirkpatrick, Roy L. (committee member), Haas, Carola A. (committee member), Voshell, J. Reese Jr. (committee member).

Subjects/Keywords: Population Dynamics; Beach Renourishment; Ornithology

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APA (6^th Edition):

Cohen, J. B. (2005). Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/27414

Chicago Manual of Style (16^th Edition):

Cohen, Jonathan Barry. “Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York.” 2005. Doctoral Dissertation, Virginia Tech. Accessed January 25, 2021. http://hdl.handle.net/10919/27414.

MLA Handbook (7^th Edition):

Cohen, Jonathan Barry. “Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York.” 2005. Web. 25 Jan 2021.

Vancouver:

Cohen JB. Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York. [Internet] [Doctoral dissertation]. Virginia Tech; 2005. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10919/27414.

Council of Science Editors:

Cohen JB. Factors limiting piping plover nesting pair density and reproductive output on Long Island, New York. [Doctoral Dissertation]. Virginia Tech; 2005. Available from: http://hdl.handle.net/10919/27414

Texas A&M University

3. Paul, Ephraim Udo. Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria.

Degree: PhD, Oceanography, 2014, Texas A&M University

URL: http://hdl.handle.net/1969.1/153262

► In-‐depth knowledge of nearshore wave, circulation, and sediment processes are vital to effective and efficient management, operation, and regulation of ports and harbors. The scientific… (more)

▼ In-‐depth knowledge of nearshore wave, circulation, and sediment processes are vital to effective and efficient management, operation, and regulation of ports and harbors. The scientific knowledge of these processes is currently lacking in Ibaka, Nigeria and this work was designed to assess these processes, thereby filling the existing gap in the literature. Even after seven decades of discovery of Ibaka bay as a leading natural harbor in Nigeria, no proactive efforts have been made to harness this resource. This dissertation aimed at developing a composite modeling system that would provide accurate and reliable information on circulation and sediment processes in Ibaka. This information will facilitate the speedy development of the deep seaport for economic empowerment of both local residents and the state. This study has three segments: field experiments, numerical experiments and data analyses. NearCoM-‐TVD was chosen as the base model for this study because of its efficiency, accuracy, and robustness in simulating the processes of interest in Ibaka. This study has undertaken a detailed investigation of the impacts of different channel designs on the erosion and/or accretion of adjacent Ibaka beach and provided the optimum channel size and location. Maps and time series of wave action attenuation based on the optimum channel design have been produced. Analyses of relative contribution of various forcing mechanisms to the total sediment budget showed that wave height variations have the greatest impact on sediment transport in Ibaka.Significant wave height above 1.0m initiated sediment transport and morphological changes in Ibaka. The effects of wave-‐current interactions on sediment processes have been investigated and found to be significant for wave heights near 1.0m in Ibaka bay. Examination of seasonal bias on sediment processes showed that only rainy season (April to October) wave climate caused sediment transport in the bay. Reduction of wave action, due to the dredged channel, resulted in wave refocusing towards the nearby Tom Shot Island. Finally, a five-‐year maintenance dredging time window has been estimated for this port and harbor site. Advisors/Committee Members: Brooks, David A (advisor), Giese, Benjamin S (advisor), DiMarco, Steven F (committee member), Kaihatu, James M (committee member).

Subjects/Keywords: Marine dredging; Port and Harbor; Estuary dynamics; Ship Channel; Beach nourishment; Surface Drifters; Cross River Estuary; Gulf of Guinea

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APA (6^th Edition):

Paul, E. U. (2014). Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/153262

Chicago Manual of Style (16^th Edition):

Paul, Ephraim Udo. “Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria.” 2014. Doctoral Dissertation, Texas A&M University. Accessed January 25, 2021. http://hdl.handle.net/1969.1/153262.

MLA Handbook (7^th Edition):

Paul, Ephraim Udo. “Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria.” 2014. Web. 25 Jan 2021.

Vancouver:

Paul EU. Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria. [Internet] [Doctoral dissertation]. Texas A&M University; 2014. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1969.1/153262.

Council of Science Editors:

Paul EU. Development and Implementation of a Composite Model for Wave, Circulation, and Sediment Processes in Ibaka Deep Seaport in Nigeria. [Doctoral Dissertation]. Texas A&M University; 2014. Available from: http://hdl.handle.net/1969.1/153262

Virginia Tech

4. Houghton, Lawrence Mitchell. Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York.

Degree: PhD, Fisheries and Wildlife Sciences, 2005, Virginia Tech

URL: http://hdl.handle.net/10919/28755

► In the early 1990's, a series of habitat changes caused by storms and subsequent beach management by the U.S. Army Corps of Engineers (USACE, The… (more)

▼ In the early 1990's, a series of habitat changes caused by storms and subsequent beach management by the U.S. Army Corps of Engineers (USACE, The Corps) provided a unique opportunity to study piping plover population dynamics in a changing environment. In this study, 1993-2004, we attempt to determine the factors that limit or influence the abundance and distribution of piping plovers in West Hampton Dunes (WHD), Long Island, NY, a renourished, highly developed, and high human disturbance area. The piping plover population on Westhampton Island increased after the hurricane of 1938, and declined thereafter. The decline co-occurred with beach development and vegetative succession. After storms in the winter of 1992-1993 breached the island at West Hampton Dunes, piping plovers re-colonized the area. The New York District USACE filled the breach in 1993, and renourished the beach in 1996 and 2000-2001. USACE renourished parts of the groinfield in Westhampton Beach in 1997. Each spring and summer, we monitored plovers intensively at WHD and part of the adjacent town of Westhampton Beach (The Reference Area) 1993-2004. We located nests and estimated reproductive and nest and chick survival rates. We monitored plover management efforts and determined causes of nest loss when possible. We monitored piping plover behaviors and obtained an index to plover food supply. We estimated area of plover habitats and defined areas unsuitable for piping plover nesting. We also obtained indices to human and predator presence on the beach. The WHD piping plover population increased from 0 pairs in 1992 to 39 in 2000 then decreased to 18 pairs in 2004. This decline was closely associated with changes in potential nesting habitat which increased from 22.4 ha in 1992 to 50.1 ha in 2000 then declined to 31.1 ha in 2004 The primary process regulating the WHD population appears to be density dependent immigration and emigration. No other vital rates (clutch size, renest rate, fertility, egg survival, nest survival, chick survival, brood survival, chicks fledged/pair) were correlated with density. The higher equilibrium density at WHD (~1 pair/ha) than at The Reference Area (~0.4 pair/ha) appeared to be a function of the large bay intertidal flats at WHD. The most common nest predators, cats (WHD = 13% of known predated nests), American Crows (17% of known predated nests) and foxes (37% of known predated nests), are newcomers to piping plover habitats. Thus, plovers may be especially vulnerable to them. Predator removal from the study area appeared to improve nest success and chick survival (R2 = 0.79). Predator exclosures at nests reduced nest loss (WHD = 34% exclosed nests lost vs. 43% of unexclosed nests lost, though in one year, one or more foxes learned to exploit plovers in exclosures (22% of all exclosed nests were predated by foxes in 1995). This study highlights the long suspected piping plover paradox: increasing beach width can temporarily raise the carrying capacity of an area, but preventing… Advisors/Committee Members: Fraser, James D. (committeechair), Walters, Jeffrey R. (committee member), Vaughan, Michael R. (committee member), Stauffer, Dean F. (committee member), Kelly, Marcella J. (committee member).

Subjects/Keywords: Immigration; Ornithology; Beach Renourishment; Emmigration; Population Dynamics

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APA (6^th Edition):

Houghton, L. M. (2005). Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/28755

Chicago Manual of Style (16^th Edition):

Houghton, Lawrence Mitchell. “Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York.” 2005. Doctoral Dissertation, Virginia Tech. Accessed January 25, 2021. http://hdl.handle.net/10919/28755.

MLA Handbook (7^th Edition):

Houghton, Lawrence Mitchell. “Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York.” 2005. Web. 25 Jan 2021.

Vancouver:

Houghton LM. Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York. [Internet] [Doctoral dissertation]. Virginia Tech; 2005. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10919/28755.

Council of Science Editors:

Houghton LM. Piping plover population dynamics and effects of beach management practices on piping plovers at West Hampton Dunes and Westhampton Beach, New York. [Doctoral Dissertation]. Virginia Tech; 2005. Available from: http://hdl.handle.net/10919/28755

University of Queensland

5. Atkinson, Alexander. Laboratory beach profile dynamics and responses to changing water levels with and without nourishment.

Degree: School of Civil Engineering, 2018, University of Queensland

URL: http://espace.library.uq.edu.au/view/UQ:638

Subjects/Keywords: Physical modelling; Equilibrium profiles; Sediment transport; Beach dynamics; Surf zone dynamics; Sea level rise; Beach nourishment; 0405 Oceanography; 0905 Civil Engineering

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APA (6^th Edition):

Atkinson, A. (2018). Laboratory beach profile dynamics and responses to changing water levels with and without nourishment. (Thesis). University of Queensland. Retrieved from http://espace.library.uq.edu.au/view/UQ:638

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Atkinson, Alexander. “Laboratory beach profile dynamics and responses to changing water levels with and without nourishment.” 2018. Thesis, University of Queensland. Accessed January 25, 2021. http://espace.library.uq.edu.au/view/UQ:638.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Atkinson, Alexander. “Laboratory beach profile dynamics and responses to changing water levels with and without nourishment.” 2018. Web. 25 Jan 2021.

Vancouver:

Atkinson A. Laboratory beach profile dynamics and responses to changing water levels with and without nourishment. [Internet] [Thesis]. University of Queensland; 2018. [cited 2021 Jan 25]. Available from: http://espace.library.uq.edu.au/view/UQ:638.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Atkinson A. Laboratory beach profile dynamics and responses to changing water levels with and without nourishment. [Thesis]. University of Queensland; 2018. Available from: http://espace.library.uq.edu.au/view/UQ:638

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

6. Sajeev, R. Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction.

Degree: 1993, Cochin University of Science and Technology

URL: http://dyuthi.cusat.ac.in/purl/1851

Subjects/Keywords: Beach Dynamics; Land-Sea Interaction; C in Relation; Wave Climate

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APA (6^th Edition):

Sajeev, R. (1993). Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction. (Thesis). Cochin University of Science and Technology. Retrieved from http://dyuthi.cusat.ac.in/purl/1851

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Sajeev, R. “Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction.” 1993. Thesis, Cochin University of Science and Technology. Accessed January 25, 2021. http://dyuthi.cusat.ac.in/purl/1851.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Sajeev, R. “Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction.” 1993. Web. 25 Jan 2021.

Vancouver:

Sajeev R. Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction. [Internet] [Thesis]. Cochin University of Science and Technology; 1993. [cited 2021 Jan 25]. Available from: http://dyuthi.cusat.ac.in/purl/1851.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Sajeev R. Beach Dynamics of Kerala Coast in Relation to Land-Sea Interaction. [Thesis]. Cochin University of Science and Technology; 1993. Available from: http://dyuthi.cusat.ac.in/purl/1851

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Georgia

7. Colbert, Joseph Edward. Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands.

Degree: 2017, University of Georgia

URL: http://hdl.handle.net/10724/36689

► Maritime grasslands are a rare and declining habitat that has received little study, and to date, how prescribed fire impacts the wildlife community is unknown.… (more)

Subjects/Keywords: Cotton rat; Sigmodon hispidus; small mammal; camera study; prescribed fire; maritime grasslands; gulf hairawn muhly; Muhlenbergia sericea; survival; population; activity; predation risk; temporal dynamics; beach dunes; barrier island

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APA (6^th Edition):

Colbert, J. E. (2017). Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/36689

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Colbert, Joseph Edward. “Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands.” 2017. Thesis, University of Georgia. Accessed January 25, 2021. http://hdl.handle.net/10724/36689.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Colbert, Joseph Edward. “Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands.” 2017. Web. 25 Jan 2021.

Vancouver:

Colbert JE. Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands. [Internet] [Thesis]. University of Georgia; 2017. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10724/36689.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Colbert JE. Hispid cotton rat (sigmodon hispidus) population and behavioral responses to prescribed fire in maritime grasslands. [Thesis]. University of Georgia; 2017. Available from: http://hdl.handle.net/10724/36689

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Universiteit Utrecht

8. Chasapis Tassinis, K. Long-term evolution of surf zone sand bars:the effect of the surface rollers.

Degree: 2016, Universiteit Utrecht

URL: http://dspace.library.uu.nl:8080/handle/1874/325666

Subjects/Keywords: coastal morphology; morphodynamic model; beach dynamics; surf zone sand bars; surface rollers; crescentic bars; sediment transport

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APA (6^th Edition):

Chasapis Tassinis, K. (2016). Long-term evolution of surf zone sand bars:the effect of the surface rollers. (Masters Thesis). Universiteit Utrecht. Retrieved from http://dspace.library.uu.nl:8080/handle/1874/325666

Chicago Manual of Style (16^th Edition):

Chasapis Tassinis, K. “Long-term evolution of surf zone sand bars:the effect of the surface rollers.” 2016. Masters Thesis, Universiteit Utrecht. Accessed January 25, 2021. http://dspace.library.uu.nl:8080/handle/1874/325666.

MLA Handbook (7^th Edition):

Chasapis Tassinis, K. “Long-term evolution of surf zone sand bars:the effect of the surface rollers.” 2016. Web. 25 Jan 2021.

Vancouver:

Chasapis Tassinis K. Long-term evolution of surf zone sand bars:the effect of the surface rollers. [Internet] [Masters thesis]. Universiteit Utrecht; 2016. [cited 2021 Jan 25]. Available from: http://dspace.library.uu.nl:8080/handle/1874/325666.

Council of Science Editors:

Chasapis Tassinis K. Long-term evolution of surf zone sand bars:the effect of the surface rollers. [Masters Thesis]. Universiteit Utrecht; 2016. Available from: http://dspace.library.uu.nl:8080/handle/1874/325666

Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

9. Giatsis, Georgios. Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας.

Degree: 2003, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ)

URL: http://hdl.handle.net/10442/hedi/31461

►

The purpose of the dissertation was to examine the dynamic and kinematic differences in vertical jumps performed on rigid surface and on the sand. Fifteen… (more)

▼

The purpose of the dissertation was to examine the dynamic and kinematic differences in vertical jumps performed on rigid surface and on the sand. Fifteen elite professional male players of Volleyball and Beach Volleyball participated in this study. The subjects performed squat jumps, countermovement (with and without using the arms) and drop jumps from 40 cm. The jumps were performed on force plate ΑΜΤΙ (rigid surface) and a special sandpit which was placed upon the force plate (sand). According to the results the jumping height was greater when performed on rigid surface in all jump types with a statistically significant difference (p < .01). The percentage of difference ranged from 13.4 to 20.5% in the various jump types. The biggest difference was found in drop jumps. The lower performance on the sand is due to the subsidence and instability of the sand which reduced the maximum force values and maximum power, although it increased the total impulse time. Also, the sand subsidence did not allow the ankle to apply greater forces at the end of the propulsion phase and as a result the body's centre of mass covered a shorter distance and utilized the maximum velocity that produced to a smaller percentage at the take-off time. The maximum force at the time of landing was larger on rigid surface. In addition, the maximum positive work was larger on rigid surface. The countermovement and the utilization of the arms increased the height of the jump on sand too. The joints of ankle and hip moved with a greater motion range on sand, while the joints of lower limbs were activated in the same sequence on both surfaces (proximal to distal). The ankle joint moved with a greater angular velocity due to the subsidence of the sand without, however, achieving the best possibleperformance The greater motion range of the ankle joint on the sand resulted in the hyperextension of the hip joint during take-off for balance purposes. Perhaps, this is one of the reasons of the larger percentage of injuries at low back on Beach Volleyball.

Σκοπός της εργασίας ήταν να διερευνήσει τις δυναμικές και κινηματικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο. Δεκαπέντε άνδρες κορυφαίοι επαγγελματίες παίκτες της Πετοσφαίρισης και της Πετοσφαίρισης Παραλίας, συμμετείχαν στην έρευνα. Οι εξεταζόμενοι εκτέλεσαν άλματα από ημικάθισμα, με προδιάταση (με και χωρίς τη χρήση των χεριών) και μετά από πτώση 40 cm. Τα άλματα εκτελέστηκαν σε δυναμοδάπεδο AMTI (σκληρό έδαφος) και σε ειδικό σκάμμα με άμμο που τοποθετήθηκε πάνω στο δυναμοδάπεδο (άμμος). Για τη στατιστική επεξεργασία των αποτελεσμάτων χρησιμοποιήθηκε t-test για ζευγαρωτές παρατηρήσεις (paired sample t-test). Από τα αποτελέσματα φάνηκε ότι το ύψος άλματος ήταν μεγαλύτερο στο σκληρό έδαφος σε όλα τα είδη αλμάτων με στατιστικά σημαντική διαφορά (p < .01). Το ποσοστό της διαφοράς κυμάνθηκε από 13.4 - 20.5% στα διάφορα είδη αλμάτων. Η μεγαλύτερη διαφορά βρέθηκε στα άλματα μετά από πτώση. Οι λόγοι της μικρότερης απόδοσης στην άμμο οφείλονται στην υποχωρητικότητα και την αστάθεια της…

Subjects/Keywords: Πετοσφαίριση παραλίας; Κινηματικά δυναμικά χαρακτηριστικά; Άλμα; Πετοσφαίριση; Βιομηχανική; Dynamics - kinematics characteristics; Beach volleyball; Vertical jumps; Jumping; Biomechanics

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Giatsis, G. (2003). Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας. (Thesis). Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Retrieved from http://hdl.handle.net/10442/hedi/31461

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Giatsis, Georgios. “Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας.” 2003. Thesis, Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ). Accessed January 25, 2021. http://hdl.handle.net/10442/hedi/31461.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Giatsis, Georgios. “Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας.” 2003. Web. 25 Jan 2021.

Vancouver:

Giatsis G. Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας. [Internet] [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2003. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10442/hedi/31461.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Giatsis G. Βιοκινητικές διαφορές των κατακόρυφων αλμάτων σε σκληρό έδαφος και σε άμμο από αθλητές της πετοσφαίρισης παραλίας. [Thesis]. Aristotle University Of Thessaloniki (AUTH); Αριστοτέλειο Πανεπιστήμιο Θεσσαλονίκης (ΑΠΘ); 2003. Available from: http://hdl.handle.net/10442/hedi/31461

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

10. Trindade, Jorge. Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais).

Degree: 2010, Universidade Aberta

URL: http://hdl.handle.net/10400.2/1733

► The aim of this thesis is to characterize beach morphodynamics and to define inundation and erosion susceptibility areas within the sandy coastal systems of the… (more)

▼ The aim of this thesis is to characterize beach morphodynamics and to define inundation and erosion susceptibility areas within the sandy coastal systems of the Estremadura, between Peniche and Cascais. The study sites are the composite beach – dune / beach – cliff system of the Sta. Rita beach, the beach – dune system of the Azul beach and the beach – dune system of the Foz do Lizandro beach. The planimetric dynamics of the beach and the geometrical properties of the beach profiles as well as the volumetric variability are studied as a product of the geomorphological agents dynamics. Inundation and erosion susceptibility assessment is then preformed through the analysis of the main hazard variables and with the empirical modeling of the beach profiles. Systematic beach profiling is used as the main methodology to acquire morphological change data from the beach system. Topographical techniques are applied and locally validated. Data from sediment sampling over the most dynamic sectors of the beach profile is also a part of the basic field information for this study. The field data together with offshore wave data and tide measurements are the basic information for the characterization and prediction of the beach systems behavior through statistics and mathematical modeling. Tides and waves are analyzed using data series of the nearby tide gauges and wave buoys, including the older wave time series of Peniche and Cascais collected in the 80’s. This data is used to calculate and predict extreme wave values in the study area. Present day offshore wave data from Leixões and Sines wave buoys is the basis for hydrodynamic characterization during the study period, including mean and storm conditions. The main morphodynamic indicators and predicted behavior are calculated for the emerged beach profiles including planimetric dynamics, maximum vertical and berm altitude variability, beach profile modifications through time, profile volumetric budget and sediment textural changes in time and space. The marine inundation and erosion susceptibility assessment is based on indexes composed of simple variables and mathematical modeling of the beach profiles. These indexes are basis for susceptibility mapping. Advisors/Committee Members: Pereira, Ana Paula Ramos Ribeiro (advisor), Ferreira, Manuela Malheiro (advisor).

Subjects/Keywords: Geografia; Geomorfologia; Litoral; Praias; Erosão; Inundações; Littoral; Beach; Morpho-sedimentary dynamics; Sediments; Susceptibility; Inundation; Erosion; ODS::04:Educação de Qualidade; ODS::13:Ação Climática

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Trindade, J. (2010). Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais). (Doctoral Dissertation). Universidade Aberta. Retrieved from http://hdl.handle.net/10400.2/1733

Chicago Manual of Style (16^th Edition):

Trindade, Jorge. “Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais).” 2010. Doctoral Dissertation, Universidade Aberta. Accessed January 25, 2021. http://hdl.handle.net/10400.2/1733.

MLA Handbook (7^th Edition):

Trindade, Jorge. “Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais).” 2010. Web. 25 Jan 2021.

Vancouver:

Trindade J. Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais). [Internet] [Doctoral dissertation]. Universidade Aberta; 2010. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/10400.2/1733.

Council of Science Editors:

Trindade J. Dinâmica morfossedimentar de praias dominadas por sistemas de arriba : (Peniche - Cascais). [Doctoral Dissertation]. Universidade Aberta; 2010. Available from: http://hdl.handle.net/10400.2/1733

11. Nekouee, Navid. Dynamics and numerical modeling of river plumes in lakes.

Degree: PhD, Civil and Environmental Engineering, 2010, Georgia Tech

URL: http://hdl.handle.net/1853/41104

► Models of the fate and transport of river plumes and the bacteria they carry into lakes are developed. They are needed to enable informed decisions… (more)

▼ Models of the fate and transport of river plumes and the bacteria they carry into lakes are developed. They are needed to enable informed decisions about beach closures to avoid economic losses, and to help design water intakes and operate combined sewer overflow schemes to obviate exposure of the public to potential pathogens. This study advances our understanding of river plumes dynamics in coastal waters by means of field studies and numerical techniques. Extensive field measurements were carried out in the swimming seasons of 2006 and 2007 on the Grand River plume as it enters Lake Michigan. They included simultaneous aerial photography, measurements of lake physical properties, the addition of artificial tracers to track the plume, and bacterial sampling. Our observed results show more flow classes than included in previous studies (e.g. CORMIX). Onshore wind can have a significant effect on the plume and whether it impacts the shoreline. A new classification scheme based on the relative magnitude of plume-crossflow length scale and Richardson number based on the wind speed is devised. Previous studies on lateral spreading are complemented with a new relationship in the near field. The plume thickness decreased rapidly with distance from the river mouth and a new non-dimensional relationship to predict thickness is developed. Empirical near field models for surface buoyant plumes are reviewed and a near field trajectory and dilution model for large aspect ratio surface discharge channels is devised. Bacterial reductions due to dilution were generally small (less than 10:1) up to 4.5 km from the river mouth. E. coli decay rates were significantly affected by solar radiation and ranged from 0.2 to 2.2 day-1 which were within the range of previous studies in Lake Michigan. Total coliform survived longer than E. coli suggesting different die-off mechanisms. Mathematical models of the bacterial transport are developed that employ a nested modeling scheme to represent the 3D hydrodynamic processes of surface river discharges in the Great Lakes. A particle tracking model is used that provides the capability to track a decaying tracer and better quantify mixing due to turbulent diffusion. Particle tracking models have considerable advantages over gradient diffusion models in simulating bacterial behavior nearshore that results in an improved representation of bacteria diffusion, decay and transport. Due to the complexity and wide variation of the time and length scale of the hydrodynamic and turbulent processes in the near field (where plume mixing is dominated by initial momentum and buoyancy) and far field (where plume mixing is dominated by ambient turbulence), a coupling technique is adapted. The far field random walk particle tracking model incorporates the empirical near field model. It simulates the transport, diffusion and decay of bacteria as discrete particles and employs the near field output as the source and transports the particles based on ambient currents predicted by the 3D hydrodynamic model.… Advisors/Committee Members: Roberts, Philip (Committee Chair), Di Lorenzo, Emanuele (Committee Member), Schwab, David (Committee Member), Stoesser, Thorsten (Committee Member), Webster, Donald (Committee Member).

Subjects/Keywords: Beach forecasting; Particle tracking; Hybrid model; Nearshore bacterial transport; Coastal diffusion and dispersion; Mass transport; Empirical model; Plumes (Fluid dynamics); Fluid dynamics; Mathematical models; Plumes (Fluid dynamics) Mathematical models

…155 ix LIST OF FIGURES Figure 1.1 Beach closure warning sign as a consequence of… …Haven recreational beach sites (right)… …121 Figure 4.15 Beach bacterial sampling locations near Grand Haven… …122 Figure 4.16 Beach bacterial samples and total daily precipitation at selected beach… …beach closures to avoid economic losses, and to help design water intakes and operate combined…

10 more images…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Nekouee, N. (2010). Dynamics and numerical modeling of river plumes in lakes. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/41104

Chicago Manual of Style (16^th Edition):

Nekouee, Navid. “Dynamics and numerical modeling of river plumes in lakes.” 2010. Doctoral Dissertation, Georgia Tech. Accessed January 25, 2021. http://hdl.handle.net/1853/41104.

MLA Handbook (7^th Edition):

Nekouee, Navid. “Dynamics and numerical modeling of river plumes in lakes.” 2010. Web. 25 Jan 2021.

Vancouver:

Nekouee N. Dynamics and numerical modeling of river plumes in lakes. [Internet] [Doctoral dissertation]. Georgia Tech; 2010. [cited 2021 Jan 25]. Available from: http://hdl.handle.net/1853/41104.

Council of Science Editors:

Nekouee N. Dynamics and numerical modeling of river plumes in lakes. [Doctoral Dissertation]. Georgia Tech; 2010. Available from: http://hdl.handle.net/1853/41104

University of Florida

12. Bustamante, Dulce. Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates.

Degree: PhD, Entomology and Nematology, 2009, University of Florida

URL: https://ufdc.ufl.edu/UFE0041128

► The monitoring of mosquito populations within an arbovirus surveillance program relies on a good understanding of the processes that drive the dynamics of the population.… (more)

▼ The monitoring of mosquito populations within an arbovirus surveillance program relies on a good understanding of the processes that drive the dynamics of the population. The main goals of this study were to help improve our understanding of the causes of variation in the age structure of mosquitoes and study the factors that affect our ability to estimate and interpret mosquito infection rates in the field. The mosquito Culex nigripalpus is one of the most important vectors of arboviruses in Florida. The results of a field and a modeling study that investigated environmental causes of variation in the age structure of Cx. nigripalpus are presented here. Age structure is of epidemiological importance because only a subset of mosquitoes will be capable of transmitting virus and this depends on an interaction between physiological and calendar age. The field study results supported that dry periods followed by heavy rains could cause important increases in the proportion of parous females that could be potentially infected and looking for a bloodmeal. In contrast, the proportion of parous females declines 7-14 days after heavy rains due to the emergence of young mosquitoes. The modeling study suggested that mosquito behavior, weather, and landscape complexity are all important factors that introduce variability in the chronological age distribution of unfed parous females. There was more variability in age and older ages became more common, when weather conditions were dry or cool, when mosquitoes were assumed to be less efficient in finding resources, and when the landscape was more complex. Environmental changes have the potential to modify Cx. nigripalpus age structure, but more research is needed on how mosquito behavior affects age distribution. Biological factors such as daily mosquito survival and virus titer variation in mosquitoes introduce errors in estimates of infection and hinder their use as surveillance indicators. Methodological aspects such as sample size and type of viral assay also introduce biases that result in frequent underestimation of the true arboviral infection rate in a mosquito population. Age variability in mosquitoes has environmental and behavioral causes which deserve further study. ( en ) Advisors/Committee Members: Lord, Cynthia C. (committee chair), Day, Jonathan F. (committee member), Lounibos, Leon P. (committee member), Bolker, Benjamin M. (committee member).

Subjects/Keywords: Age structure; Female animals; Infections; Modeling; Oviposition sites; Population dynamics; Population estimates; Population size; Population structure; Rain; age, chronological, culex, florida, infection, model, physiological; City of Vero Beach ( local )

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Bustamante, D. (2009). Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates. (Doctoral Dissertation). University of Florida. Retrieved from https://ufdc.ufl.edu/UFE0041128

Chicago Manual of Style (16^th Edition):

Bustamante, Dulce. “Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates.” 2009. Doctoral Dissertation, University of Florida. Accessed January 25, 2021. https://ufdc.ufl.edu/UFE0041128.

MLA Handbook (7^th Edition):

Bustamante, Dulce. “Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates.” 2009. Web. 25 Jan 2021.

Vancouver:

Bustamante D. Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates. [Internet] [Doctoral dissertation]. University of Florida; 2009. [cited 2021 Jan 25]. Available from: https://ufdc.ufl.edu/UFE0041128.

Council of Science Editors:

Bustamante D. Culex nigripalpus (Diptera Culicidae) population age structure under heterogeneous environments and sources of error on the estimation of mosquito infection rates. [Doctoral Dissertation]. University of Florida; 2009. Available from: https://ufdc.ufl.edu/UFE0041128

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