Investigations of Appalachian Section Geological Survey of Canada
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منابع مشابه
NEOTECTONIC INVESTIGATIONS ON WESTERN VANCOUVER ISLAND, BRITISH COLUMBIA (92F/4) By P.T. Bobrowsky and J.J. Clague, Geological Survey of Canada
Interest in the contemporary geodynamic setting of southwestern British Columbia stems from a concern that a large earthquake may impact the major urban centres of the province. Indeed, monitoring of seismic activity in western Canada indicates that numerous smaller magnitude (<M4) intraplate earthquakes affect the southern coastal region annually. and that very small tremors occur daily. Large...
متن کاملU.S. Geological Survey Scientific Investigations Report 2007-5195
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متن کاملTechniques of Water-Resources Investigations OF the United States Geological Survey
Accurate measurement of water levels deeper than 1,000 feet in wells requires specialized equipment. Corrections for stretch and thermal expansion of measuring tapes must be considered, and other measuring devices must be calibrated periodically. Borehole deviation corrections also must be made. Devices for recording fluctuation of fluid level usually require mechanical modification for use at ...
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ژورنال
عنوان ژورنال: Atlantic Geology
سال: 1965
ISSN: 1718-7885
DOI: 10.4138/1327