Infragravity wave source regions determined from ambient noise correlation
Infragravity wave source regions determined from ambient noise correlation
复制标题
DOI：
10.1029/2011gl050414
复制
发表时间：
2012-02
影响因子：
5.2
通讯作者：
N. Harmon;T. Henstock;M. Srokosz;F. Tilmann;A. Rietbrock;P. Barton
中科院分区：
文献类型：
--
作者：
N. Harmon;T. Henstock;M. Srokosz;F. Tilmann;A. Rietbrock;P. Barton
本文用反投影方法从苏门答腊岛附近海域5个海底差压计的互相关中确定了60-200 s周期的海洋亚重力波的主要方向。我们观察到亚重力波从各个方向到达，但有一个占主导地位的源方向，代表相干传播沿着海岸从东南或从南部。这项研究表明，我们的投影技术，这可能是适用于过去和未来的地震数据，以改善海洋亚重力波的产生和海啸传播的模型的有效性。
We use a backprojection method to determine dominant directions of ocean infragravity waves from 60–200 s period from cross correlations between 5 ocean bottom differential pressure gauges located off the coast of Sumatra. We observe infragravity waves arriving from all directions, but there is a dominant source direction that represents coherent propagation along the coast from the southeast or from the south. This study demonstrates the effectiveness of our projection technique, which may be applied to past and future seismic data to improve models of ocean infragravity wave generation and tsunami propagation.