Empirical global relations converting MS and mb to moment magnitude
Empirical global relations converting MS and mb to moment magnitude
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DOI：
10.1007/s10950-006-9012-4
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发表时间：
2006-04-01
影响因子：
1.6
通讯作者：
Scordilis, E. M.
中科院分区：
文献类型：
--
作者：
Scordilis, E. M.
世界各地地震中心使用的几种震级标度的存在和许多作者编制的地震目录使得连接震级标度的全球有效关系成为必要。这将有助于建立一个同质的全球地震目录，这是地震研究的一个有用工具。特别令人感兴趣的是全球关系的定义，将不同的震级尺度转换为最可靠和最有用的震级尺度，即矩震级，M-W。为了实现这一点，来自国际地震源（ISC，NEIC，HRVD等）的非常大的数据样本。已经被收集和处理。相对于M-W检验的震级标度是面波震级M-S、体波震级m（B）和局部震级M-L。所采用的力矩幅值取自HRVD和USGS的CMT解。本研究中使用的数据集包含20，407次地震，这些地震发生在1976年1月1日至2003年5月31日的时间段内，可获得矩震级。结果表明，M-W与m（B）和M-S之间存在着明确的关系，这些关系可以可靠地用于编制震级均匀的地震目录。
The existence of several magnitude scales used by seismological centers all over the world and the compilation of earthquake catalogs by many authors have rendered globally valid relations connecting magnitude scales a necessity. This would allow the creation of a homogeneous global earthquake catalog, a useful tool for earthquake research. Of special interest is the definition of global relations converting different magnitude scales to the most reliable and useful scale of magnitude, the moment magnitude, M-W. In order to accomplish this, a very large sample of data from international seismological sources (ISC, NEIC, HRVD, etc.) has been collected and processed. The magnitude scales tested against M-W are the surface wave magnitude, M-S, the body wave magnitude, m(b), and the local magnitude, M-L. The moment magnitudes adopted have been taken from the CMT solutions of HRVD and USGS. The data set used in this study contains 20,407 earthquakes, which occurred all over the world during the time period 1.1.1976-31.5.2003, for which moment magnitudes are available. It is shown that well-defined relations hold between M-W and m(b) and M-S and that these relations can be reliably used for compiling homogeneous, with respect to magnitude, earthquake catalogs.