Ice Thickness Observations. North American Arctic and Subarctic, 1974-75, 1975-76and 1976-77. Part 9

摘要

This ninth report on lake and river ice and land-fast sea ice presents icethickness measurements taken throughout the North American Arctic and Subarctic during the 1974-75, 1975-76 and 1976-77 winter seasons. Information on surface ice conditions, dates of first ice, freeze-over, breakup, and observed maximum ice thicknesses are also included.