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Prospective CSEP Evaluation of 1-Day, 3-Month, and 5-Yr Earthquake Forecasts for Italy

机译:意大利的1天,3个月和5年地震预测的预期CSEPE评估

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摘要

In 2009, the global Collaboratory for the Study of Earthquake Predictability (CSEP) launched three experiments to forecast the distribution of earthquakes in Italy in the subsequent 5 yrs. CSEP solicited forecasts for seismicity tomorrow, in the next three months, and for the entire 5 yrs. In those 5 yrs, the Istituto Nazionale di Geofisica e Vulcanologia (INGV) recorded 83 target earthquakes with local magnitude 3.95 = M 4.95, and 14 larger shocks. The results show that 1-day forecasts are consistent with the number and magnitudes of the target earthquakes, and one version of the epidemic-type aftershock sequence (ETAS) model is also consistent with the spatial distribution; ensemble forecasts, which we created for the 1-day experiment, are consistent with the number, locations, and magnitudes of the target earthquakes, and they perform as well as the best model; none of the 3-month time-independent models produce consistent forecasts; the best 5-yr models account for the fault distribution and the historical seismicity; and 5-yr models based on instrumental seismicity and b-value spatial variation show poor forecasting performance.
机译:2009年,地震可预测性(CSEPE)研究的全球协作推出了三项实验,以预测意大利在随后的5年内地震的分布。 CSEP在未来三个月内为明天的地震性征集预测,以及整个5年。在这5年中,Istituto nazionale di Geofisica u vulcanologia(Ingv)记录了83个目标地震,局部大小为3.95.95& 4.95和14个较大的冲击。结果表明,1天的预测与目标地震的数量和大小一致,并且一个版本的流行病型余震序列(ETAS)模型也与空间分布一致;我们为期一天实验创建的集合预测与目标地震的数量,位置和大小一致,它们表现为最佳型号; 3个月的时间无关模型中没有一个产生一致的预测;最好的5年级模型占故障分布和历史地震性的型号;基于仪器地震性和B值空间变化的5年级模型显示出不良的预测性能。

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  • 来源
    《Seismological research letters》 |2018年第4期|共11页
  • 作者单位

    Ist Nazl Geofis &

    Vulcanol Via Vigna Murata 605 I-00143 Rome Italy;

    Ist Nazl Geofis &

    Vulcanol Via Vigna Murata 605 I-00143 Rome Italy;

    GFZ Potsdam Helmholtzstr 6-7 D-14467 Potsdam Germany;

    Univ Bristol Sch Earth Sci Queens Rd Clifton BS8 1RJ England;

    Swiss Fed Inst Technol Sonneggstr 5 CH-8092 Zurich Switzerland;

    AXIS Capital Alfred Escher Str 50 CH-8002 Zurich Switzerland;

    Swiss Fed Inst Technol Sonneggstr 5 CH-8092 Zurich Switzerland;

    Swiss Fed Inst Technol Sonneggstr 5 CH-8092 Zurich Switzerland;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 地震学;
  • 关键词

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