A physics-based earthquake simulator replicates seismic hazard statistics across California.

A physics-based earthquake simulator replicates seismic hazard statistics across California.
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DOI:
10.1126/sciadv.aau0688
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发表时间:
2018-08
期刊:
影响因子:
13.6
通讯作者:
Jordan TH
Jordan TH
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Shaw BE;Milner KR;Field EH;Richards-Dinger K;Gilchrist JJ;Dieterich JH;Jordan TH

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一个地震模拟器需要更少的输入和假设复制地震危险性估计。地震灾害模型对社会很重要,可以纳入建筑规范和减灾工作。然而,这些模型建立在许多不确定的假设之上,并且由于大地震的重现时间很长,因此很难通过观测进行检验。基于物理的地震模拟器提供了一个潜在的有用工具,但它们面临着广泛的基本科学不确定性。我们比较了基于物理的地震模拟器对最新的地震灾害模型为加州。在模拟器中只使用统一的参数,我们发现惊人的长期震动危险的协议相比,加州模型。这种通过基于物理的模型复制基于统计的地震危险性估计的能力交叉验证了标准方法,并提供了一种新的替代方法,需要更少的输入和假设来估计危险性。
An earthquake simulator needing fewer inputs and assumptions replicates seismic hazard estimates. Seismic hazard models are important for society, feeding into building codes and hazard mitigation efforts. These models, however, rest on many uncertain assumptions and are difficult to test observationally because of the long recurrence times of large earthquakes. Physics-based earthquake simulators offer a potentially helpful tool, but they face a vast range of fundamental scientific uncertainties. We compare a physics-based earthquake simulator against the latest seismic hazard model for California. Using only uniform parameters in the simulator, we find strikingly good agreement of the long-term shaking hazard compared with the California model. This ability to replicate statistically based seismic hazard estimates by a physics-based model cross-validates standard methods and provides a new alternative approach needing fewer inputs and assumptions for estimating hazard.
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