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1. Deas, Alec T. A crustal study using teleseismic P Phases recorded near Port Authur, Ontario.

Degree: MS- MSc, Geophysics, 1969, University of British Columbia

The crustal thickness and P velocities in the Port Arthur, Ontario region of the Canadian Shield have been previously determined by seismic refraction techniques during the Lake Superior Experiment and Project Early Rise. In this study, the P phases of eleven teleseismic earthquakes recorded near Port Arthur have been studied by computing azimuths, angles of incidence, and spectral ratios to ascertain some crustal properties and compare these values with the refraction results. A P velocity at the surface of 6.1 ± .8 km/sec and a crustal thickness of 40 ± 5 km determined from the earthquakes are similar to but less precise than the refraction estimates of 6.3 km/sec and 38 km respectively. Transverse motions generated by the earthquake signal passing through the crust were observed and contributed to the uncertainty.

Subjects/Keywords: Seismology  – Port Arthur; Ont.

Port Arthur Region Showing Station Location and Surface Geology STATION SYMBOL DOT STATION… …LOCATION 48 26.0'N 89°18.1'W 6 km West of Port Arthur U ywu 48°29 1'N 8 9 ° 3… …Superior and northward from Port Arthur to C h u r c h i l l , Manitoba. A portion of the… …beneath Port Arthur. A s t r u c t u r a l difference between Lake Superior and the area north… …500 f t . thick beneath Port Arthur. (Moorhouse 1960) . A general geologic map… 

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APA (6th Edition):

Deas, A. T. (1969). A crustal study using teleseismic P Phases recorded near Port Authur, Ontario. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/35181

Chicago Manual of Style (16th Edition):

Deas, Alec T. “A crustal study using teleseismic P Phases recorded near Port Authur, Ontario.” 1969. Masters Thesis, University of British Columbia. Accessed March 06, 2021. http://hdl.handle.net/2429/35181.

MLA Handbook (7th Edition):

Deas, Alec T. “A crustal study using teleseismic P Phases recorded near Port Authur, Ontario.” 1969. Web. 06 Mar 2021.

Vancouver:

Deas AT. A crustal study using teleseismic P Phases recorded near Port Authur, Ontario. [Internet] [Masters thesis]. University of British Columbia; 1969. [cited 2021 Mar 06]. Available from: http://hdl.handle.net/2429/35181.

Council of Science Editors:

Deas AT. A crustal study using teleseismic P Phases recorded near Port Authur, Ontario. [Masters Thesis]. University of British Columbia; 1969. Available from: http://hdl.handle.net/2429/35181

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