High-resolution surface-wave tomography from ambient seismic noise
High-resolution surface-wave tomography from ambient seismic noise
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DOI：
10.1126/science.1108339
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发表时间：
2005-03-11
期刊：
影响因子：
56.9
通讯作者：
Ritzwoller, MH
中科院分区：
文献类型：
--
作者：
Shapiro, NM;Campillo, M;Ritzwoller, MH
对加利福尼亚州US阵列站记录的1个月的环境地震噪声进行互相关，得到了台间路径上数百个短周期面波群速度的测量结果。我们使用这些测量结果构建了加州主要地质单元的层析图像，其中低速异常对应于主要沉积盆地，高速异常对应于主要山脉的火成岩芯。这种方法可以提高面波分析得到的地壳图像的分辨率和保真度。
Cross-correlation of 1 month of ambient seismic noise recorded at USArray stations in California yields hundreds of short-period surface-wave group-speed measurements on interstation paths. We used these measurements to construct tomographic images of the principal geological units of California, with low-speed anomalies corresponding to the main sedimentary basins and high-speed anomalies corresponding to the igneous cores of the major mountain ranges. This method can improve the resolution and fidelity of crustal images obtained from surface-wave analyses.