摘要
<正>我们利用GRACE卫星重力数据估计了东北平原两个子区域的地下水储量变化。在GRACE数据后处理过程中,去除南北条带是很重要的一步,而不同的去条带方法在区域上会导致空间分布的差异。我们推荐利用实际观测的地下水井数据来验证GRACE去条带方法的有效性。通过比较2005-2013年地下水井水位变化和卫星重力减去陆表模型的趋势项,我们认为在东北平原适合采用P4M6去条带方法。结果表明,松嫩平原南部经历了一个干旱期到湿润期的过程,估计的陆地水储量在两个时期分
引文
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