南海周边相对海平面变化特征及2004年苏门答腊地震影响分析

发布时间：2018-06-06 10:25

本文选题：南海 + 相对海平面变化　；参考：《海洋学报》2016年11期

【摘要】：利用南海周边1989-2014年的潮汐资料和GPS长期观测资料,分析了南海周边相对海平面变化特征,以及2004年苏门答腊地震对该区域相对海平面变化的影响。研究结果表明,南海周边的相对海平面变化以上升为主,平均上升速率(4.53±0.20)mm/a,高于全球平均速率,且2004年后上升趋势加剧;南海周边相对海平面呈现6类较典型的变化特征,并存在与板块构造相对应的分区聚集现象,形成了中国东南和越南沿海、马来半岛、加里曼丹岛北部、菲律宾群岛等4个变化特征区。受2004年苏门答腊大地震的影响,马来半岛、南沙和西沙海域的地壳形变由上升趋势转为下沉,加剧了相对海平面的上升;中国东南沿海和菲律宾群岛受地震影响较小;越南沿海和加里曼丹岛北部区域的地震影响还有待进一步研究。
[Abstract]:Based on the tidal data of the South China Sea from 1989 to 2014 and the GPS long-term observation data, the characteristics of the relative sea level variation around the South China Sea and the influence of the Sumatra earthquake in 2004 on the relative sea level change in the region are analyzed. The results show that the relative sea level changes around the South China Sea are mainly rising, the average rising rate is 4.53 卤0.20mm / a, which is higher than the global average rate, and the rising trend is increasing after 2004, and the relative sea level around the South China Sea presents six typical variation characteristics. There are four zones corresponding to plate tectonics, such as southeast China and Vietnam coast, Malay Peninsula, northern Kalimantan Island and Philippines Islands. Under the influence of the Sumatra earthquake in 2004, the crustal deformation of Malay Peninsula, Nansha and Xisha areas changed from rising trend to subsidence, which aggravated the rise of relative sea level, and the southeast coast of China and the Philippine Islands were less affected by the earthquake. The impact of the earthquake on the coast of Vietnam and the northern part of Kalimantan Island remains to be further studied.
【作者单位】：国家海洋局第一海洋研究所;山东科技大学测绘科学与工程学院;
【基金】：全球海平面上升对我国典型区域海平面的影响研究(2012CB957704) 国家海洋局GNSS业务运行项目
【分类号】：P731.23;P315

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