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基于改进的小波冻融探测算法,利用SMMR和SSM/I数据对南极冰盖1978年—2010年期间的冻融状况进行监测,分析了南极冰盖近31年(1978—2010)和近10年(2000—2010)的整体和区域冻融时空变化特征,结果表明:南极冰盖冻融变化受南极地区温度变化影响比较明显,两者之间具有一定程度的正相关关系,而且南极冰盖冻融具有南极东部和南极西部两种不同的冻融变化特征,南极西部冰盖冻融变化剧烈,南极东部冰盖冻融变化相对稳定,甚至有减弱趋势。
Based on the improved wavelet freeze-thaw detection algorithm, the Freezing and Thawing status of the Antarctic ice sheet from 1978 to 2010 was monitored by using SMMR and SSM / I data. The Antarctic ice sheet was analyzed in recent 31 years (1978-2010) and nearly 10 years (2000-2010). The results show that the variation of freeze-thaw in the Antarctic ice sheet is more obvious than that in the Antarctic region, and there is a certain degree of positive correlation between them, and the Antarctic ice sheet frozen Melting has two different freeze-thaw variations in eastern Antarctica and western Antarctica. The freeze-thaw changes of the western Antarctic ice sheet are drastic. The freeze-thaw changes of the eastern Antarctic ice sheet are relatively stable, even decreasing.