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非线性混合模型的优越性及其在中国典型地震强活动区的应用

周汉杨 杜建军 张舒婷

周汉杨, 杜建军, 张舒婷, 2023. 非线性混合模型的优越性及其在中国典型地震强活动区的应用. 地质力学学报, 29 (2): 264-275. DOI: 10.12090/j.issn.1006-6616.2022038
引用本文: 周汉杨, 杜建军, 张舒婷, 2023. 非线性混合模型的优越性及其在中国典型地震强活动区的应用. 地质力学学报, 29 (2): 264-275. DOI: 10.12090/j.issn.1006-6616.2022038
ZHOU Hanyang, DU Jianjun, ZHANG Shuting, 2023. The advantage of the nonlinear mixed model and its application in typical seismically active areas in China. Journal of Geomechanics, 29 (2): 264-275. DOI: 10.12090/j.issn.1006-6616.2022038
Citation: ZHOU Hanyang, DU Jianjun, ZHANG Shuting, 2023. The advantage of the nonlinear mixed model and its application in typical seismically active areas in China. Journal of Geomechanics, 29 (2): 264-275. DOI: 10.12090/j.issn.1006-6616.2022038

非线性混合模型的优越性及其在中国典型地震强活动区的应用

doi: 10.12090/j.issn.1006-6616.2022038
基金项目: 

中国地质调查局地质调查项目 DD20221644

详细信息
    作者简介:

    周汉杨(1996—),男,在读硕士,从事地震数据研究。E-mail:z_hanyang@126.com

    通讯作者:

    杜建军(1976—),男,教授级高工,从事构造地质研究。E-mail:djjwyf@sina.com

  • 中图分类号: P315

The advantage of the nonlinear mixed model and its application in typical seismically active areas in China

Funds: 

the Geological Survey Project of the China Geological Survey DD20221644

  • 摘要:

    b值作为地震预报与危险性评价研究中的重要参数,受到广泛关注与讨论。通过非线性混合模型对中国地震目录数据库开展地震震级-频数分布拟合,并利用该方法计算得到的b值对地震活动进行分析评价。文章首先以中国26个地震带为研究区,收集1920—2019年的4.7级以上地震数据为完整地震目录,分别通过非线性混合模型与传统G-R模型进行拟合,并对比其效果;进一步以西藏地区为具体试验区,选择1920—2019年的地震目录数据,以10年为间隔,将非线性混合模型应用于西藏地区地震震级-频数模型的拟合。其次,利用矩震级与地震矩转换公式计算出非线性混合模型中的相关变量。最后,利用非线性混合模型对地震数据进行非线性回归分析。结果显示:当b值出现低值时,对应时间段前后有地震发生,b值较低时,发生的地震震级大、频次底;b值相对较高时,地震震级小、频次高。将非线性混合模型应用到中国及邻区完整地震数据中,能够对数据进行更加全面的分析,克服了传统模型方法对高震级和地震数据分析中的局限性,合理分析计算b值,进而增强对地震目录数据的分析和评价。

     

  • 图  1  中国地震区、带划分图和1920—2019年4.7级以上地震分布位置(《中国地震动参数区划图》(GB 18306-2015))

    Ⅰ—台湾地震区(Ⅰ-1—台湾西部地震带;Ⅰ-2—台湾东部地震带);Ⅱ—华南地震区(Ⅱ-1—长江中游地震带;Ⅱ-2—华南沿海地震带;Ⅱ-3—右江地震带);Ⅲ—华北地震区(Ⅲ-1—长江下游-南黄海地震带;Ⅲ-2—郯庐地震带;Ⅲ-3—华北平原地震带;Ⅲ-4—汾渭地震带;Ⅲ-5—银川-河套地震带;Ⅲ-6—朝鲜地震带;Ⅲ-7—鄂尔多斯地震带);Ⅳ—东北地震区(Ⅳ—东北地震带);Ⅴ—青藏高原地震区(Ⅴ-1—西昆仑-帕米尔地震带;Ⅴ2-1—龙门山地震带;Ⅴ2-2—六盘山-祁连山地震带;Ⅴ2-3—柴达木-阿尔金地震带;Ⅴ3-1—巴颜喀拉山地震带;Ⅴ3-2—鲜水河-滇东地震带;Ⅴ4-1—喜马拉雅地震带;Ⅴ4-2—滇西南地震带;Ⅴ4-3—藏中地震带);Ⅵ—天山-阿尔泰地震区(Ⅵ-1—南天山地震带;Ⅵ-2—中天山地震带;Ⅵ-3—北天山地震带;Ⅵ-4—阿尔泰山地震带;Ⅵ-5—塔里木-阿拉善地震带);Ⅶ—南海地震区;Ⅷ—东海地震区

    Figure  1.  Map of China's seismic zones and belts, and the location of earthquakes of magnitude 4.7 or above from 1920 to 2019 (Zoning Map of Earthquake Parameters in China (GB 18306-2015))

    I-Taiwan seismic zone (I-1-western Taiwan seismic zone; I-2-eastern Taiwan seismic zone); II-South China seismic zone (II-1-middle Yangtze River seismic zone; II-2-South China Coastal Seismic Zone; II-3-Youjiang seismic zone); III-North China seismic zone (III-1-the lower reaches of the Yangtze River-the South Yellow Sea seismic zone; III-2-the Tanlu seismic zone; III-3-the North China Plain seismic zone; III-4-the Fenwei seismic zone; III-5-the Yinchuan-Hetao seismic zone; III-6-the Korean seismic zone; III-7-the Ordos seismic zone); IV-Northeast seismic zone (IV-Northeast Seismic Zone); V-Qinghai-Tibet Plateau seismic zone (V-1-West Kunlun-Pamir seismic zone; V2-1-Longmen Mountain seismic zone; V2-2-Liupan Mountain-Qilian Mountain seismic zone; V2-3-Qaidam-Altun seismic zone; V3-1-Bayan Kara Mountain seismic zone; V3-2-Xianshui River-eastern Yunnan seismic zone; V4-1-Himalayan seismic zone; V4-2-southwestern Yunnan seismic zone; V4-3-central Tibet seismic zone); VI-Tianshan-Altai seismic zone (VI-1-southern Tianshan seismic zone; VI-2-middle Tianshan seismic zone; VI-3-northern Tianshan seismic zone; VI-4-Altai seismic zone; VI-5-Tarim-Alashan seismic zone); VII-South China Sea seismic zone; VIII-East China Sea seismic zone

    图  2  中国1920—2019年4.7级以上地震时间分布(地震数据源自于国家地震科学数据中心; https://data.earthquake.cn/)

    Figure  2.  Frequency of earthquakes over magnitude 4.7 from 1920 to 2019 in China

    图  3  中国四川地区4级以上地震G-R关系式与非线性混合模型拟合曲线对比图(1920—2019年)

    Figure  3.  Comparison of the G-R relationship and the combined nonlinear mixed model for earthquakes over magnitude 4 in Sichuan, China

    图  4  中国各地震带非线性混合模型与G-R模型拟合曲线对比图(一)

    Figure  4.  Comparison chart of the fitting curves between the nonlinear mixed model and the G-R model for each seismic zone in China (Part Ⅰ)

    图  5  中国各地震带非线性混合模型与G-R模型拟合曲线对比图(二)

    Figure  5.  Comparison chart of the fitting curves between the nonlinear mixed model and the G-R model for each seismic zones in China (Part Ⅱ)

    图  6  中国各地震带非线性混合模型与G-R模型拟合曲线对比图(三)

    Figure  6.  Comparison chart of the fitting curves between the nonlinear mixed model and the G-R model for each seismic zone in China (Part Ⅲ)

    图  7  西藏地区间隔10年地震数据b值变化图

    Figure  7.  Trend map of the b-values of the seismic data in Tibet with 10-year intervals

    表  1  相关参数MWMOMO-1MO2对应表

    Table  1.   Correspondence table of MW, MO, MO-1 and MO2

    MW MO MO-1 MO2
    4.7 1.32396×e12 7.55308×e-13 1.75288×e24
    4.9 1.58884×e12 6.29389×e-13 2.52442×e24
    5.1 1.90050×e12 5.26178×e-13 3.61189×e24
    5.3 2.26613×e12 4.41281×e-13 5.13534×e24
    5.5 2.69389×e12 3.71210×e-13 7.25706×e24
    5.7 3.19301×e12 3.13184×e-13 1.01953×e25
    5.9 3.77386×e12 2.64981×e-13 1.42420×e25
    6.1 4.44814×e12 2.24813×e-13 1.97859×e25
    6.3 5.22897×e12 1.91242×e-13 2.73421×e25
    6.5 6.13107×e12 1.63104×e-13 3.75900×e25
    6.7 7.17089×e12 1.39453×e-13 5.14217×e25
    6.9 8.36683×e12 1.19520×e-13 7.00038×e25
    7.1 8.96245×e12 1.11577×e-13 8.03255×e25
    7.3 9.79301×e12 1.02114×e-13 9.59030×e25
    下载: 导出CSV

    表  2  各区域参数值表

    Table  2.   Table of parameter value for each area

    区域 a b a1 a2 a3
    Ⅰ-1 10.446 1.561 -1.26×e12 1.98×e-26 -3.45×e-13
    Ⅰ-2 10.484 1.349 -1.29×e12 1.98×e-27 -8.79×e-14
    Ⅱ-1 5.319 0.569 -4.13×e-26 4.95×e-13
    Ⅱ-2 4.874 0.582 1.73×e-27 6.03×e-15
    Ⅱ-3 10.776 2.002 -3.48×e-13
    Ⅲ-1 5.473 0.967 5.45×e13 -6.84×e-27 1.82×e-13
    Ⅲ-2 8.840 1.300 -1.07×e12 -2.58×e-27 -1.06×e-13
    Ⅲ-3 6.856 0.988 -9.46×e10 9.96×e-27 -1.82×e-13
    Ⅲ-4 5.423 0.797 3.13×e11 1.87×e-26 -2.77×e-13
    Ⅲ-5 5.533 0.666 -8.22×e11 -5.84×e-27 1.22×e-13
    Ⅲ-6 3.843 0.341 1.96×e-13
    Ⅲ-7 12.194 2.643 -1.12×e-12
    11.368 1.839 -1.72×e12 1.58×e-26 -4.18×e-13
    Ⅴ-1 11.863 1.769 -1.35×e12 4.21×e-27 -2.07×e-13
    Ⅴ2-1 9.317 1.401 -9.47×e11 1.20×e-26 -2.89×e-13
    Ⅴ2-2 7.617 1.128 -6.00×e11 5.58×e-27 -1.98×e-13
    Ⅴ2-3 12.348 2.125 -9.94×e11 2.67×e-26 -5.89×e-13
    Ⅴ3-1 6.950 0.858 -9.84×e11 -1.83×e-26 1.92×e-13
    Ⅴ3-2 10.604 1.532 -1.22×e12 9.47×e-27 -2.75×e-13
    Ⅴ4-1 7.600 0.876 -5.68×e11 -6.57×e-27 4.51×e-14
    Ⅴ4-2 2.570 0.103 7.60×e11 4.95×e-27 6.31×e-14
    Ⅴ4-3 5.402 0.714 4.59×e11 2.21×e-26 -2.30×e-13
    Ⅵ-1 4.853 0.616 5.98×e11 2.71×e-26 -2.21×e-13
    Ⅵ-2 7.534 1.059 -9.93×e11 -1.38×e-27 -8.67×e-14
    Ⅵ-3 6.141 0.858 -1.40×e11 -3.72×e-27 -1.60×e-14
    Ⅵ-4 6.630 0.859 -6.29×e11 -4.38×e-27 -1.93×e-14
    注:Ⅰ-1—台湾西部地震带;Ⅰ-2—台湾东部地震带;Ⅱ-1—长江中游地震带;Ⅱ-2—华南沿海地震带;Ⅱ-3—右江地震带;Ⅲ-1—长江下游-南黄海地震带;Ⅲ-2—郯庐地震带;Ⅲ-3—华北平原地震带;Ⅲ-4—汾渭地震带;Ⅲ-5—银川-河套地震带;Ⅲ-6—朝鲜地震带;Ⅲ-7—鄂尔多斯地震带;Ⅳ—东北地震带;Ⅴ-1—西昆仑-帕米尔地震带;Ⅴ2-1—龙门山地震带;Ⅴ2-2—六盘山-祁连山地震带;Ⅴ2-3—柴达木-阿尔金地震带;Ⅴ3-1—巴颜喀拉山地震带;Ⅴ3-2—鲜水河-滇东地震带;Ⅴ4-1—喜马拉雅地震带;Ⅴ4-2—滇西南地震带;Ⅴ4-3—藏中地震带;Ⅵ-1—南天山地震带;Ⅵ-2—中天山地震带;Ⅵ-3—北天山地震带;Ⅵ-4—阿尔泰山地震带;由于公元1920—2019年Ⅵ-5塔里木-阿拉善地震带仅有1条地震数据,故文中在27个地震带中共建立26个完整地震目录
    下载: 导出CSV

    表  3  各研究区非线性混合模型拟合度与G-R模型拟合度对比表

    Table  3.   Comparison table of the fitting degree of the nonlinear mixed model and the G-R model in each study area

    区域 非线性拟合度R2 G-R拟合度R2 区域 非线性拟合度R2 G-R拟合度R2 区域 非线性拟合度R2 G-R拟合度R2
    Ⅰ-1 0.994 0.955 Ⅲ-5 0.990 0.980 Ⅴ3-2 0.992 0.983
    Ⅰ-2 0.995 0.986 Ⅲ-6 0.977 0.957 Ⅴ4-1 0.997 0.995
    Ⅱ-1 0.965 0.955 Ⅲ-7 0.965 0.943 Ⅴ4-2 0.993 0.986
    Ⅱ-2 0.986 0.984 0.994 0.963 Ⅴ4-3 0.990 0.963
    Ⅱ-3 0.954 0.931 Ⅴ-1 0.996 0.993 Ⅵ-1 0.999 0.957
    Ⅲ-1 0.980 0.912 Ⅴ2-1 0.991 0.979 Ⅵ-2 0.997 0.995
    Ⅲ-2 0.989 0.986 Ⅴ2-2 0.989 0.987 Ⅵ-3 0.987 0.982
    Ⅲ-3 0.993 0.989 Ⅴ2-3 0.992 0.984 Ⅵ-4 0.991 0.987
    Ⅲ-4 0.986 0.967 Ⅴ3-1 0.993 0.976
    注:Ⅰ-1—台湾西部地震带;Ⅰ-2—台湾东部地震带;Ⅱ-1—长江中游地震带;Ⅱ-2—华南沿海地震带;Ⅱ-3—右江地震带;Ⅲ-1—长江下游-南黄海地震带;Ⅲ-2—郯庐地震带;Ⅲ-3—华北平原地震带;Ⅲ-4—汾渭地震带;Ⅲ-5—银川-河套地震带;Ⅲ-6—朝鲜地震带;Ⅲ-7—鄂尔多斯地震带;Ⅳ—东北地震带;Ⅴ-1—西昆仑-帕米尔地震带;Ⅴ2-1—龙门山地震带;Ⅴ2-2—六盘山-祁连山地震带;Ⅴ2-3—柴达木-阿尔金地震带;Ⅴ3-1—巴颜喀拉山地震带;Ⅴ3-2—鲜水河-滇东地震带;Ⅴ4-1—喜马拉雅地震带;Ⅴ4-2—滇西南地震带;Ⅴ4-3—藏中地震带;Ⅵ-1—南天山地震带;Ⅵ-2—中天山地震带;Ⅵ-3—北天山地震带;Ⅵ-4—阿尔泰山地震带
    下载: 导出CSV

    表  4  西藏地区1920—2019年10年间隔G-R模型和混合模型b值对比表

    Table  4.   Comparison table of the b-values of the G-R model and the nonlinear mixed model for 10-year intervals from 1920 to 2019 in Tibet

    组别 时间/年 b
    (传统G-R模型)
    b
    (非线性混合模型)
    1 1920—1929 0.598 0.228
    2 1930—1939 0.576 0.166
    3 1940—1949 0.646 0.312
    4 1950—1959 0.870 0.565
    5 1960—1969 0.951 1.008
    6 1970—1979 0.861 0.807
    7 1980—1989 0.690 0.312
    8 1990—1999 0.691 0.955
    9 2000—2009 0.681 0.742
    10 2010—2019 0.746 1.201
    下载: 导出CSV
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  • 收稿日期:  2022-10-05
  • 修回日期:  2022-08-21
  • 录用日期:  2022-08-24
  • 预出版日期:  2022-09-30

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