| 基于GRACE数据的格陵兰冰盖质量变化研究 |
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| 引用本文： | 朱传东,陆洋,史红岭,张子占,杜宗亮,涂弋,高春春.基于GRACE数据的格陵兰冰盖质量变化研究[J].海洋测绘,2013(4):27-30. |
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| 作者姓名： | 朱传东 陆洋 史红岭 张子占 杜宗亮 涂弋 高春春 |
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| 作者单位： | [1]中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室,湖北武汉430077 [2]中国科学院大学,北京100049 [3]极地测绘科学国家测绘地理信息局重点实验室,湖北武汉430079 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）（2013CB733311,2012CB957703）;国家自然科学基金项目（4127402541174064）：极地测绘科学国家测绘地理信息局重点实验室开放基金（201204）. |
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| 摘 要： | 基于GRACE得到的时变地球重力场数据反演了格陵兰冰盖2002～2011年期间的质量变化。结果表明:格陵兰冰盖2002～2011年的年消融总量为188±10km3/a,2002年以来冰盖整体的消融速率呈现出增加趋势;冰盖的消融区域主要集中在冰盖的东南部和西北部;自2008年以来,冰盖东南部的消融速率虽然有所放缓,但消融速率仍然维持在55±7km3/a;冰盖西北部的消融速率仍在增加,2008年以后达到了48±6km3/a。
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| 关 键 词： | GRACE 时变重力场 格陵兰冰盖 冰川消融 质量变化 |
Quality Changes of the Greenland Ice Sheet Based on GRACE Satellite Data |
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| ZHU Chuandong,LU Yang,SHI Hongling,ZHANG Zizhan,DU Zongliang,TU Yi,GAO Chunchun.Quality Changes of the Greenland Ice Sheet Based on GRACE Satellite Data[J].Hydrographic Surveying and Charting,2013(4):27-30. |
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| Authors: | ZHU Chuandong LU Yang SHI Hongling ZHANG Zizhan DU Zongliang TU Yi GAO Chunchun |
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| Institution: | 1,,2 ( 1. State Key Laboratory of Geodesy and Earth＇ s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. Key Laboratory of Polar Surveying and Mapping, SBSM, Wuhan 430077, China) |
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| Abstract: | In this paper, the GRACE data is used to obtain estimates of the mass variations of Greenland ice sheet. A mass loss estimate of 188±10 km3/a for the Greenland ice sheet is obtained from 2002 to 2011 based on GRACE satellite data. The mass loss of entire Greenland ice sheet is still accelerating since 2002. GRACE measurements also reveal significant ice losses in southeast and northwest Greenland. Ice losses in southeast Greenland appear to have slowed down since 2008. Because that the deceleration is weak, and southeast Greenland still appears to be losing ice mass at a high rate which can reach to 55±7 km3/a. While northwest Greenland show continued accelerations in recent years,it has increased to 48±6 km3/a after 2008. |
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| Keywords: | GRACE temporal gravity field Greenland ice sheet ice mass deterioration mass variation |
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