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《Beijing Surveying and Mapping》 2018-10
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GRACE Gravity Satellites Study on the Temporal and Spatial Characteristics of the Antarctic Ice Sheet Mass Change

SUN Cheng;CHEN Hongbing;College of Geomatics Xi'an University of Science and Technology;The Youse Surverying and Mapping Institute of Zhejiang;  
The temporal and spatial characteristics of the ice sheet in Antarctica were studied from GRACE satellite gravity data from2002 to 2015.The results show that the quality of Antarctica has a strong spatial variation,and there are differences in quality changes in different regions.The mass of the ice sheet in the Antarctic region fell at a rate of-0.3553 cm/a,the mass of the ice sheet in the southwest region dropped sharply at a rate of-17.34 cm/a,but the rate in the southeast region showed a small increase of 2.88 cm/a;the Antarctic ice The cover shows different phenomena with seasonal changes,including summer and winter,with anomalous mass variations in the Antarctic region of-6.91 cm to 3.34 cm in summer,and anomalous mass variations in the Antarctic region of-3.59 cm to 5.23 cm in winter.The Antarctic region was analyzed.The quality change not only has a strong spatial nature,but also has a strong seasonality.
【CateGory Index】: P343.6;P332
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