Snow pit studies and radio-echo soundings on Mt. McKinley 2004
Snow pit studies and radio-echo soundings on Mt. McKinley 2004
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发表时间：
2005-03
影响因子：
1
通讯作者：
Syosaku Kanamori;Yoshitomi Okura;T. Shiraiwa;K. Yoshikawa
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作者：
Syosaku Kanamori;Yoshitomi Okura;T. Shiraiwa;K. Yoshikawa
2004年6月，我们进行了雪坑研究和无线电回波探测，以寻找山上的冰芯钻探地点。麦金利(北纬63°，西经151°，海拔6194米。S。L)，阿拉斯加。在德纳里关的坑研究(5560米。S。L。和医疗营(4350 Ma.S。L。)在地表附近显示高密度层。这些层似乎与强风有关。根据观测到的坑内温度与阿拉斯加和育空地区其他冰芯采样点的温度进行比较，我们推测在观测到的点上没有发生明显的融化。无线电回波测深结果表明，高峰期(5220m a.S，L)冰层增厚。德纳利山口分别为46-48m和60-67m。尽管我们有一些关于累积速率的信息，但冰芯的厚度太薄了，无法钻探可以提供数百年气候记录的冰芯。我们建议，德纳里关的东面和北峰的顶峰高原(海拔5690米。S，L。)可能有更厚的冰。
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, 6194 m a. s. l.), Alaska. Pit studies at Denali Pass (5560 m a. s. l.) and Medical Camp (4350 ma. 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. l.) 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. l.) may have thicker ice.