CAPjoint, A Computer Software Package for Joint Inversion of Moderate Earthquake Source Parameters with Local and Teleseismic Waveforms
CAPjoint, A Computer Software Package for Joint Inversion of Moderate Earthquake Source Parameters with Local and Teleseismic Waveforms
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DOI：
10.1785/0220140167
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发表时间：
2015-03
影响因子：
3.3
通讯作者：
Weiwen Chen;S. Ni;H. Kanamori;S. Wei;Z. Jia;Lupei Zhu
中科院分区：
文献类型：
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作者：
Weiwen Chen;S. Ni;H. Kanamori;S. Wei;Z. Jia;Lupei Zhu
准确的震源参数，如断层机制、深度和矩震级不仅在地震危险性评估中很重要，而且对地震破裂过程和地震构造研究也至关重要。虽然大地震（M_w7+）可能造成重大破坏，但发生频率较低.而中强地震（M_w5.0 -6.5）发生频率要高得多，而且可能发生在地质上未识别的断层上。一些中度地震在人口稠密的社区造成破坏，特别是在发展中国家（鲍姆巴赫等人，1994; Hamzehloo，2005）。例如，2011年西班牙洛尔卡M_w5地震（Pro et al.，2014）、2012年北方意大利M_w 5.9费拉拉地震序列（Malagnini et al.，2012年），2010年中国四川省遂宁5级地震（Luo et al.，2011年）和1998年中国河北省张北M_w5.7地震（Li et al.，2008年，造成了巨大的经济损失和人员伤亡。与大于MW 7的地震相比，中等地震的破裂过程可以近似为点源，由于破裂持续时间通常比波形反演所用的周期短，因此通常用矩张量（CMT）来描述。
Accurate earthquake source parameters such as fault mechanism, depth, and moment magnitude are not only important in seismic‐hazard assessment, but also are crucial to studies of earthquake rupture processes and seismotectonics. Although large earthquakes (M_w 7+) may cause substantial damage, they occur less frequently. In contrast, moderate earthquakes (M_w 5.0–6.5) occur with much higher frequency and may occur on faults not geologically identified. Some of the moderate earthquakes cause damage in densely populated communities, especially in developing countries (Baumbach et al., 1994; Hamzehloo, 2005). For example, the 2011 M_w 5 earthquake in Lorca, Spain (Pro et al., 2014), the 2012 M_w 5.9 Ferrara earthquake sequence in northern Italy (Malagnini et al., 2012), the 2010 M_w 5 Suining earthquake in Sichuang Province of China (Luo et al., 2011), and the 1998 M_w 5.7 Zhangbei earthquake in Hebei Province of China (Li et al., 2008) all caused substantial economic loss and casualty. Compared with events larger than M_w 7, rupture processes of these moderate events can be approximated as point sources, which are usually described with a centroid moment tensor (CMT) because the rupture duration is usually shorter than the period used in the waveform inversion.