一种基于经验分布的大地震复发概率计算方法

郭星, 潘华, 李金臣, 侯春林

郭星, 潘华, 李金臣, 侯春林. 2018: 一种基于经验分布的大地震复发概率计算方法. 地震学报, 40(4): 506-518. DOI: 10.11939/jass.20170167
引用本文: 郭星, 潘华, 李金臣, 侯春林. 2018: 一种基于经验分布的大地震复发概率计算方法. 地震学报, 40(4): 506-518. DOI: 10.11939/jass.20170167
Guo Xing, Pan Hua, Li Jinchen, Hou Chunlin. 2018: A method for computing the recurrence probability of large earthquakes based on empirical distribution. Acta Seismologica Sinica, 40(4): 506-518. DOI: 10.11939/jass.20170167
Citation: Guo Xing, Pan Hua, Li Jinchen, Hou Chunlin. 2018: A method for computing the recurrence probability of large earthquakes based on empirical distribution. Acta Seismologica Sinica, 40(4): 506-518. DOI: 10.11939/jass.20170167

一种基于经验分布的大地震复发概率计算方法

基金项目: 国家自然科学基金项目(51408255)资助
详细信息
    通讯作者:

    潘华: e-mail: panhua.mail@163.com

A method for computing the recurrence probability of large earthquakes based on empirical distribution

  • 摘要: 以历史重演原则和构造类比原则为基础,提出了一种基于经验分布的大地震复发概率计算方法,该方法不作任何复发概率分布的强假定,直接通过对大量地震序列数据的蒙特卡罗随机抽样来模拟未来大地震的复发规律,进而统计得到未来一段时间内的大地震发生概率,并以鲜水河断裂带炉霍段和道孚段为实例,利用本文给出的复发概率计算方法得出炉霍段和道孚段未来50年大地震发生概率分别为0.15和0.31。
    Abstract: On the basis of historic recurrence and seismotectonic analogy, we presented a method for calculating earthquake recurrence probability in a period in the future by using empirical distribution function. It adopted the Monte Carlo method to sample from a lot of earthquake sequences to simulate the occurrence of future large earthquakes, so as to achieve statistical large earthquake occurrence probability. Besides, this method never makes assumption that the earthquake recurrence data is according with a certain kind of distribution model. Taking the Luhuo segment and the Daofu segment along the Xianshuihe fault zone as examples, the calculation results showed that the large earthquake occurrence probability in the future 50 years on those two segments are 0.15 and 0.31, respectively.
  • 图  1   仅有一个本地复发间隔情况下的经验分布方法流程图

    Figure  1.   The flow chart for empirical distribution method with only one local recurrence interval

    图  2   两个及以上本地复发间隔情况下经验分布方法流程图

    Figure  2.   The flow chart for empirical distribution method with two or more local recurrence intervals

    图  3   炉霍段大地震复发间隔的概率密度直方图(a)和未来50年发震概率曲线图(b)

    Figure  3.   The probability density plot of large earthquakes (a) and the occurrence probability for a 50-year exposure period (b) on the Luhuo segment

    图  4   道孚段大地震复发间隔的概率密度直方图(a)和未来50年发震概率曲线图(b)

    Figure  4.   The probability density plot of large earthquakes (a) and the occurrence probability for a 50-year exposure period (b) on the Daofu segment

    表  1   由40个地震序列组成的数据库

    Table  1   Database consisting of 40 earthquake sequences

    断裂名称 古地震事件
    年龄/a
    复发间隔
    数目
    资料来源 断裂名称 古地震事
    件年龄/a
    复发间隔
    数目
    资料来源
    郯城MS8.5
    地震断裂
    E1:11 000±1 000
    E2: 7 450±950
    E3: 3 500±500
    E4:公元1668
    3 王华林(1995) 冷龙岭断裂 E1:5 926
    E2:4 050±160
    E3:2 900±270
    E4:1 560±360
    E5:公元1540
    4 李正芳等 (2012)
    三河−平谷MS8.0
    地震断裂
    E1:20 000
    E2:13 000
    E3:7 500
    E4:公元1679
    3 冉勇康等 (1997) 鄂拉山断裂 E1:12 500±100
    E2:10 000±150
    E3:6 000±100
    E4:4 100±300
    E5:2 600±400
    4 袁道阳等 (2004)
    北祁连山东段
    毛毛山—金强河
    断裂
    E1:7 700±50
    E2:6 100±150
    E3:5 200±100
    E4:4 250±150
    E5:3 050±150
    4 袁道阳等 (1997) 延矾盆地
    北缘断裂北段
    E1:21 700±2 000
    E2:16 000±1 300
    E3:10 880±3 000
    E4:5 756±1 100
    3 刘静和
    汪良谋 (1996)
    北祁连山东段
    老虎山断裂
    E1:7 700±50
    E2:6 100±150
    E3:5 200±100
    E4:4 250±150
    E5:3 050±150
    E6:2 000±300
    E7:800±100
    E8:公元1888
    7 袁道阳等 (1997) 延矾盆地
    北缘断裂南段
    E1:33 100
    E2:28 000
    E3:21 000±1 500
    E4:14 000
    E5:10 800
    E6:7 500
    E7:公元1338
    6 刘静和
    汪良谋 (1996)
    东昆仑断裂带
    库赛湖段
    E1:31 900±1 923
    E2:27 990±1 681
    E3:23 635±1 427
    E4:20 345±1 225
    E5:16 865±1 018
    E6:12 935±774
    E7:9 730±592
    E8:6 955±425
    E9:3 100±201
    E10:公元2001
    9 胡道功(2007) 怀涿盆地
    北缘断裂北段
    E1:20 500±1 180
    E2:14 500±710
    E3:6 700±600
    E4:<1 310
    3 刘静和
    汪良谋 (1996)
    海原断裂
    中段破裂
    E1:6 595±275
    E2:5 770±200
    E3:4 965±925
    E4:3 382±589
    E5:2 765±355
    E6:2 240±450
    E7:1 275±350
    6 冉勇康等 (1998)
    张培震等 (2003)
    怀涿盆地
    北缘断裂南段
    E1:30 000±1 400
    E2:24 500±700
    E3:16 000±2 100
    E4:10 000
    E5:6 600±400
    E6:4 400±500
    E7:<2 865
    6 刘静和
    汪良谋 (1996)
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出版历程
  • 收稿日期:  2017-08-23
  • 修回日期:  2018-03-22
  • 网络出版日期:  2018-07-01
  • 发布日期:  2018-06-30

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