Filters: Tags: British Columbia, Canada (X) > partyWithName: U.S. Geological Survey (X)
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Oblique aerial view of Tikke Glacier in the Alsek Ranges of British Columbia. Canada. n.d. Published on page 13 in U. S. Geological Survey. Glaciers: Water Resource, by Mark Meier and Austin Post. 1995.
Photograph illustrating how temporary lakes are caused by periodically surging glaciers: Tikke Glacier after the culmination of the surge shown in progress in photo no. 18. The advancing ice has now formed dams blocking both side valleys on the right side of the glacier. Since completing its rapid movement, the glacier has relapsed into near stagnation. The glacier-dammed lakes probably will fill and dump annually until melting removes the ice dams. Tikke Glacier is only one of nearly 200 surging glaciers in Alaska and adjacent Canada which can be expected to form hazardous lakes periodically. British Columbia, Canada. August 1966. Published on sheet 3 in U. S. Geological Survey. Hydrological investigations. Atlas...
Categories: Image;
Tags: Alaska Glaciers,
British Columbia, Canada,
Photographers,
Post, A. Collection,
Tikke Glacier,
Photograph illustrating the variability of glacier-dammed lakes: Tulsequah Lake nearly drained by outburst flood. Tulsequah Lake, Coast Mountains, located just east of the international boundary in Canada. This lake generally drains catastrophically in late summer. The resulting floods move down the Taku River Valley where a highway connection to Juneau has been proposed. British Columbia, Canada. cc 1970. Published on sheet 3 of U. S. Geological Survey. Hydrologic investigations. Atlas HA-455. 1971.
Categories: Image;
Tags: Alaska Glaciers,
British Columbia, Canada,
Photographers,
Post, A. Collection,
photo print
This data release and accompanying spreadsheet illustrate the ecosystem scale selenium model for Lake Koocanusa described in USGS Open-File Report 2020-1098, "Understanding and Documenting the Scientific Basis of Selenium Ecological Protection in Support of Site-Specific Guidelines Development for Lake Koocanusa, Montana, U.S.A., and British Columbia, Canada." All report sections, equations, and tables referenced in this data release and spreadsheet are from that report. Two models are described in the OFR. Results for several different “runs” of this model with different model input parameters and assumptions are included in this data release. The spreadsheet calculations that produced those results are also included...
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