A Database of Shear‐Wave Splitting Measurements for the Arabian Plate
A Database of Shear‐Wave Splitting Measurements for the Arabian Plate
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DOI：
10.1785/0220180144
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发表时间：
2018-09
影响因子：
3.3
通讯作者：
S. Qaysi;Kelly H. Liu;Stephen S. Gao
中科院分区：
文献类型：
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作者：
S. Qaysi;Kelly H. Liu;Stephen S. Gao
我们建立了阿拉伯板块远震剪切波分裂(SWS)参数的统一数据库。基于最小化横向分量上的能量的过程，测量了SWS参数，包括快速极化取向和分裂时间。2010年至2015年，沙特地质调查局运营的157个地震台记录了用于生成SWS数据库的大部分数据。来自25个台站的其余数据来自地震研究所联合数据管理中心(DMC)。获得了约4000对定义良好的SKS、SKKS和PKS参数。大多数台站以南北(N-S)快速定向为主。台站平均分裂次数在0.45~1.84 S之间，阿拉伯半岛西部地区分裂次数较大，向东递减。新建立的数据库具有前所未有的空间覆盖面，可供各领域的研究人员用来调查阿拉伯板块之下的地壳和地幔结构和动力学。电子增刊：单个横波分裂测量值、台站平均分裂参数和区域平均分裂参数表。
We present a uniform database of teleseismic shear-wave splitting (SWS) parameters for the Arabian plate. The SWS parameters, including the fast polarization orientation and splitting time, are measured based on a procedure that minimizes the energy on the transverse component. The majority of the data used to produce the SWS database were recorded by 157 seismic stations operated by the Saudi Geological Survey from 2010 to 2015. The rest of the data from 25 stations were obtained from the Incorporated Research Institutions for Seismology (IRIS) Data Management Center (DMC). About 4000 pairs of well-defined SKS, SKKS, and PKS parameters were obtained. Most of the stations show dominantly north–south (N-S) fast orientations. The station-averaged splitting times range from 0.45 to 1.84 s, with large splitting times in the western region of the Arabian Peninsula, and decrease eastward. The newly established database has an unprecedented spatial coverage and can be utilized by researchers in various fields to investigate crustal and mantle structure and dynamics beneath the Arabian plate. Electronic Supplement: Tables of individual shear-wave splitting measurements, station-averaged splitting parameters, and areaaveraged splitting parameters.