Shallow ice-core drilling at Mount Wrangell, Alaska
Shiraiwa T, Kanamori S, Benson CS, Solie D, Muravyev YD. 2004. Shallow ice-core drilling at Mount Wrangell, Alaska. Bulletin of Glaciological Research. 21:71-77
During the 2003 summer we initiated a three-year study of climate and volcanic history on Mt.Wrangell, Alaska (60'N, 144'W, 4317 m). It is being done in comparison with research on UshkovskyVolcano (56'N, 160'E, 3903 m), Kamchatka Peninsula, Russia. Both are ice-covered, andesitic volcanoeson the north Pacific rim, at 4000 m altitude and within 6' in latitude. In June 2003 a researchcamp was established in the Summit Caldera of Mt. Wrangell for the purpose of ice core drilling, radioecho sounding of ice depth, and maintenance of previously established photo control points on craterrims for use in aerial photogrammetry. A 50m ice core of high quality was obtained in sections 50 cmlong, with a new drill which performed very well. It will be analyzed for 0'180 and aD as well as forchemical analyses of major ions and volcanic ash traces. The core extended back to 1981 andoverlapped stratigraphically with core and pit studies done from 1961 to 1982 on Mt. Wrangell. The10-m deep temperature was -18.9 'C and was found to be higher as much as 1 'C than those observedin 1970s.
- Type
- Journal Article
- Authors
- Shiraiwa, Takayuki; Kanamori, Syosaku; Benson, Carl; Solie, Daniel; Muravyev, Yaroslav
- Units
- WRST
- Keywords
- aerial photogrammetry, andesitic volcanoes, Climate, climate history, Geology, Glaciology, ice-core, Mount Wrangell, Mt. Wrangell, radio echo sound depth, volcanic history, Volcanoes