open access

https://hdl.handle.net/2115/20274

Snow pit studies and radio-echo soundings on Mt. McKinley 2004

英語

氷厚探査

2005-03-01

The Japanese Society of Snow and Ice

Bulletin of Glaciological Research

22

89-97

In June 2004, we made snow pit studies and radio-echo soundings to seek ice core drilling sites on Mt McKinley (63。N, 151。W, 6194m a. s. l), Alaska. Pit studies at Denali Pass (5560m a. s. l.) and Medical Camp (4350 m a. s. l.) show high-density layers near surface. These layers seem to relate with strong wind. From the comparison of the observed temperatures at the pits and temperatures at other ice coring sites in Alaska and Yukon, we suppose that no significant melting occurs at observed sites. Radio-echo soundings show that the ice thicknesses at High Camp (5220 m a. s. 1.) and Denali Pass are 46-48 m and 60-67 m, respectively. Although we have a little information about accumulation rates, the thicknesses are too thin to drill the ice cores which can provide the climate record for more than hundreds years. We suggest that the eastward of Denali Pass and the Summit Plateau of the North Peak (5690 m a. s. 1.) may have thicker ice.

学術雑誌論文

Accepted Manuscript

本稿はBulletin of Glaciological Research（日本雪氷学会）に掲載され、同誌の許可を得て転載するものである。「Bulletin of Glaciological Research　2005年3月1日　Vol. 22」に該当する。

1345-3807