Accession Number:

AD0694262

Title:

RECENT OBSERVATIONS ON THE SURGING OTTO GLACIER, ELLESMERE ISLAND,

Descriptive Note:

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT OTTAWA (ONTARIO)

Personal Author(s):

• Hattersley-Smith,G.

Report Date:

1969-02-18

Pagination or Media Count:

10.0

Abstract:

Air photographs show that the Otto Glacier in northwestern Ellesmere Island started to surge sometime between 1950 and 1959, with the result that the terminus advanced about 3 km as a floating ice tongue. Maps prepared from the 1959 photographs and from additional photographs taken in 1964 show a further advance of 2-3 km. Information from a subglacial relief map of the terminal part of the glacier, constructed from the results of radio-depth sounding over the glacier in 1966, may have a bearing on the mechanism of glacier surges. Other glaciers in northern Ellesmere Island show features indicative of past surges. Author

Descriptors:

• (*GLACIERS
• CANADA)
• MOTION
• AERIAL PHOTOGRAPHS
• ICE ISLANDS
• SURFACE PROPERTIES
• RADIO EQUIPMENT
• ECHO RANGING
• DEPTH FINDING

Subject Categories:

• Snow, Ice and Permafrost

Distribution Statement:

APPROVED FOR PUBLIC RELEASE