Abstract: Based on the rupture models of the 2015 Nepal earthquake sequence and half space homogeneous elastic model, the displacement field near the epicenters is estimated. The horizontal components converge to the epicenters from north and south with maximum value of 871~962mm. The farther the epicenter distance is, the smaller of the horizontal displacement occurred. The displacement on the south side of the epicenters decreases more rapidly than that on the north side as the distance from the epicenter increased. Significant settlement occurred on the north side of the epicenters with maximum of 376~474mm, while large uplift occurred on the epicenters and its south side with maximum value of 626~677mm. Then, the displacement of the peaks of the Himalaya near the epicenters is estimated. The largest displacement occurred at the peak of Shishapangma with 393mm horizontal component and 36mm settlement. Mt. Everest, the world's highest peak, moves 36mm in nearly southward direction with 9mm settlement. The displacements of other peaks of the Himalaya are different with the epicentral distance and azimuth of the 2015 Nepal earthquake sequence.

Key words: 2015 Nepal earthquake sequence, earthquake rupture model, displacement field, Mt. Everest

摘要： 基于2015年尼泊尔地震序列的破裂模型及均匀弹性半空间模型，计算了该地震序列导致的喜马拉雅山脉及邻区的位移场。结果表明：尼泊尔地震序列所导致的位移场呈南北两侧水平分量向震中会聚的分布形式，水平位移最大达871~962mm，并且距震中越远水平位移量越小，但震中南侧的水平位移量随震中距衰减更快。震中北侧出现了明显沉降，最大沉降量达376~474mm，大部分震中及以南区域出现了明显隆升，最大值达626~677mm。文中还估计了该地震序列导致的周围喜马拉雅山脉部分山峰的位移场，结果表明希夏邦马峰的位移最大，水平位移达393mm，下沉36mm；世界最高峰珠穆朗玛峰近S向水平移动36mm，下沉9mm；其他山峰的位移因与到尼泊尔地震序列的震中距离和方位的不同而不同。

关键词: 2015年尼泊尔地震序列, 震源破裂模型, 位移场, 珠穆朗玛峰