| 东南极达尔克冰川表面运动速度特征研究 |
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| 引用本文： | 黄继锋,鄂栋臣,张胜凯. 东南极达尔克冰川表面运动速度特征研究[J]. 冰川冻土, 2015, 37(5): 1150-1159. DOI: 10.7522/j.isnn.1000-0240.2015.0129 |
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| 作者姓名： | 黄继锋 鄂栋臣 张胜凯 |
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| 作者单位： | 1. 中国海洋大学 海洋地球科学学院, 山东 青岛 266100;2. 中国海洋大学 海底科学与探测技术教育部重点实验室, 山东 青岛 266100;3. 武汉大学 中国南极测绘研究中心, 湖北 武汉 430079 |
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| 基金项目： | 中央高校基本科研业务费专项(201413006)，国家重大科学研究计划(2013CBA01804，2012CB957701)，国家自然科学基金(41176173)，南北极环境综合考察及资源潜力评估专项(CHINARE2015)资助 |
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| 摘 要： | 2007-2012年,在东南极达尔克冰川实施了18期空间方向交会观测,解算得到了冰川的运动规律:其整体平均运动速度为0.41 m·d-1,平均流向的方位角为7.01°;总的来说,其冬季和夏季的流速基本相当,但冰川前缘附近的运动在冬季显得更为活跃;冰川横截面上从边缘到中心,流速逐渐增大,流速最大的点出现在冰川中轴线上,流速最小的点则出现在边界附近;沿冰川流动方向,从上游至入海口,流速亦逐渐增大,冰川前缘流速最大,此处有较多的冰裂缝发育.与之前的遥感研究结果相比较,冰川运动比较稳定,流速未发现显著变化.
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| 关 键 词： | 南极 达尔克冰川 流速 |
| 收稿时间： | 2015-05-16 |
| 修稿时间： | 2015-07-17 |
Surface flow features of the Dark Glacier in East Antarctica from in-situ observation |
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| HUANG Jifeng,E Dongchen,ZHANG Shengkai. Surface flow features of the Dark Glacier in East Antarctica from in-situ observation[J]. Journal of Glaciology and Geocryology, 2015, 37(5): 1150-1159. DOI: 10.7522/j.isnn.1000-0240.2015.0129 |
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| Authors: | HUANG Jifeng E Dongchen ZHANG Shengkai |
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| Affiliation: | 1. College of Marine Geosciences, Ocean University of China, Qingdao 266100, China;2. Key Lab of Submarine Geosciences and Prospecting Techniques, MOE, Ocean University of China, Qingdao 266100, China;3. Chinese Antarctic Center of Surveying and Mapping, Wuhan University, Wuhan 430079, China |
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| Abstract: | 18 filed campaigns of space intersection were taken to monitor the flow of the Dark Glacier in East Antarctica during 2007-2012. The monitor indicated that the average velocity was 0.41 meters per day and the azimuth of the average direction of the flow was 7.01 degree. Generally, the flow velocity in summer was nearly that in winter. However, the flow near the front of the glacier seemed to be more positive in winter. The flow became faster and faster towards the central line from the glacier boundary. The highest speed appeared in the central line and the lowest speed appeared in the boundary area. Along the glacier flow direction, the same flow pattern could be seen, i.e., flow velocity increased towards the terminus from the upstream. The highest speed appeared in the frontier, where more cracks took place. Compared to the former researches, the Dark Glacier seems no significant change in flow velocity. |
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| Keywords: | Antarctica Dark Glacier flow velocity |
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