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《地震研究》[ISSN:1000-0666/CN:53-1062/P]

卷:

期数:

2025年01期

页码:

49-60

栏目:

出版日期:

2024-12-20

文章信息/Info

Title:

Identification Method of GNSS Strain Rate Field Anomaly and Evaluation of Earthquake Prediction Efficiency in Yunnan

作者:

王伶俐¹; 3; 洪 敏¹; 牛 甜¹; 李 芹²; 3; 杨薪俊¹; 喻世贤¹

(1.云南省地震局,云南 昆明 650201; 2.云南省地质环境监测院,云南 昆明 650216; 3.自然资源部云南省高原山地地质灾害预报预警与生态保护修复重点实验室,云南 昆明 650216)

Author(s):

WANG Lingli¹; 3; HONG Min¹; NIU Tian¹; LI Qin²; 3; YANG Xinjun¹; Yu Shixian¹

(1.Yunnan Earthquake Agency,Kunming 650201,Yunnan,China；2.Yunnan Institute of Geo-environment Monitoring,Kunming 650216,Yunnan,China；3.Yunnan Key Laboratory of Geohazard Forecast and Geo-ecological Restorationin Plateau Mountainous Area,Kunming 650216,Yunnan,China)

关键词:

GNSS;  应变率场;  地震预测;  R值评分;  异常指标;  云南地区

Keywords:

GNSS;  strain rate field;  earthquake prediction;  R-value scoring;  abnormal indicators;  Yunnan area

分类号:

P315.725

DOI:

10.20015/j.cnki.ISSN1000-0666.2025.0006

摘要:

利用1999—2020年云南及邻区近300个GNSS测站的观测数据解算获取的速度场为约束,采用克里金插值方法分时段估计了1999—2007年,2009—2014年,2015—2020年三期区域应变率场; 通过回溯各个观测时段之后3年内M_S≥5.0地震事件,分析区域地壳形变特征与地震事件发生地点之间的相关性,结果表明,绝大部分地震都发生在面应变高梯度带的张压转换区和最大剪应变率沿断层方向的高值区或其边缘。基于上述应变率场异常特征,提出格网地震危险因子算法,建立地震危险区识别模型,通过估计格网最大剪应变率和面应变率风险区划因子,定量提取异常区地震危险指标,结果显示采用数值模型识别出的异常区与地震事件具有较好地对应关系; 进一步采用R值评分的方式对应变率场异常区模型识别方法进行地震预测效能量化评估与分析,结果显示3期应变率场预测结果均通过R值评分检测。

Abstract:

In this paper,the velocity field is calculated by using the observation data from nearly 300 GNSS stations in Yunnan and its adjacent areas in the period from 1999 to 2020.Based on the velocity field,three stages(1999-2007,2009-2014,and 2015-2020)of the regional strain rate fields are estimated by Kriging interpolation method.By backtracking the earthquake events(M_S≥5.0)in the following 3 years of each observation stage,the correlation between the characteristics of the regional crustal deformation and the location of the earthquake events is analyzed,and some abnormal criteria of strain rate field identifying the risk locations of the strong earthquakes are summarized.That is,most of the earthquake cases occur in the tension-pressure transition zone of the high gradient zone of surface strain,and the high value zone or the edge of the maximum shear strain along the fault.Based on the abnormal characteristics of strain rate field,this paper proposes a grid algorithm of the seismic risk factor,and establishes a model of the seismic-risk area identification.By estimating the recognition factors of the risk zones of the maximum shear strain and the surface strain with the grid algorithm,the seismic risk indicators of the abnormal areas are quantitatively extracted.The abnormal areas identified by the numerical model corresponds well with the seismic events.In order to provide an objective evaluation basis for the subsequent use of this model to track earthquake conditions and to determine earthquake risk locations,this paper adopts the R-value scoring method to evaluate the efficiency of this proposed model.The results show that the prediction of the strain rate field in the three stages passes the R-value scoring.

参考文献/References:

陈小斌.2007.中国陆地现今水平形变状况及其驱动机制[J].中国科学:地球科学,37(8):1056-1064.
Chen X B.2007.Present-day horizontal deformation status of continental China and its driving mechanism[J].Scientia Sinica Terra,37(8):1056-1064.(in Chinese)
党亚民,杨强,薛树强,等.2019.GNSS监测的川滇地区地壳形变动态变化特征[J].大地测量与地球动力学,39(2):111-116.
Dang Y M,Yang Q,Xue S Q,et al.2019.GNSS monitoring dynamic variation characteristics of crustal deformation in the Sichuan-Yunnan region[J].Journal of Geodesy and Geodynamics,39(2):111-116.(in Chinese)
邓起东,程绍平,马冀,等.2014.青藏高原地震活动特征及当前地震活动形势[J].地球物理学报,57(7):2025-2042.
Deng Q D,Cheng S P,Ma J,et al.2014.Seismic activities and earthquake potential in the Tibetan plateau[J].Chinese Journal of Geophysics,57(7):2025-2042.(in Chinese)
高涵,张明,秦姗兰,等.2018.基于多尺度球面小波分析云南地区应变特征[J].大地测量与地球动力学,38(12):1232-1237.
Gao H,Zhang M,Qing S L,et al.2018.Analysis the strain characteristics of Yunnan:based on multi-scale spherical wavelet[J].Journal of Geodesy and Geodynamics,38(12):1232-1237.(in Chinese)
国家地震局科技监测司.1990.地震学分析预报方法程式指南[M].北京:地震出版社.
Department of Science and Technology Monitoring,National Earthquake Administration.1990.Program guide for seismological analysis and prediction methods[M].Beijing:Seismological Press.(in Chinese)
洪敏,张勇,邵德盛,等.2014.云南地区近期地壳活动特征[J].地震研究,37(3):367-372.
Hong M,Zhang Y,Shao D S,et al.2014.Recent tectonic activity features of Yunnan region[J].Journal of Seismological Research,37(3):367-372.(in Chinese)
江在森,方颖,武艳强,等.2009.汶川8.0级地震前区域地壳运动与变形动态过程[J].地球物理学报,52(2):505-518.
Jiang Z S,Fang Y,Wu Y Q,et al.2009.The dynamic process of regional crustal movement and deformation before Wenchuan M_S8.0 earthquake[J].Chinese Journal of Geophysics,52(2):505-518.(in Chinese)
江在森,马宗晋,张希,等.2003.GPS初步结果揭示的中国大陆水平应变场与构造变形[J].地球物理学报,46(3):352-358.
Jiang Z S,Ma Z J,Zhang X,et al.2003.Horizontal strain field and tectonic deformation of China mainland revealed by preliminary GPS result[J].Chinese Journal of Geophysics,46(3):352-358.(in Chinese)
江在森,武艳强,邹镇宇,等.2020.GNSS在中国大陆的地震预测应用研究进展与展望[J].中国地震,36(4):693-707.
Jiang Z S,Wu Y Q,Zou Z Y,et al.2020.Progress and prospect of earthquake forecasting based on GNSS data in China[J].Earthquake Research in China,36(4):693-707.(in Chinese)
江在森,武艳强.2012.地壳形变与强震地点预测问题与认识[J].地震,32(2):8-21.
Jiang Z S,Wu Y Q.2012.Crustal deformation and location forecast of strong earthquakes:understandings and questions[J].Earthquake,32(2):8-21.(in Chinese)
马宏生,刘杰,吴昊,等.2004.基于R值评分的年度地震预报能力评价[J].地震,4(2):31-37.
Ma H S,Liu J,Wu H,et al.2004.Scientific evaluation of annual earthquake prediction efficiency based on R-value[J].Earthquake,4(2):31-37.(in Chinese)
田晓,占伟,郑洪艳,等.2021.川滇地区现今三维地壳运动特征[J].大地测量与地球动力学,41(7):739-746.
Tian X,Zhan W,Zheng H Y,et al.2021.Characteristics of present-day 3D crustal movement of Sichuan-Yunnan region[J].Journal of Geodesy and Geodynamics,41(7):739-746.(in Chinese)
王伶俐,洪敏,张勇,等.2020.云南地区GNSS应变场时空演化与地震事件关联分析[J].中国地震,36(1):91-104.
Wang L L,Hong M,Zhang Y,et al.2020.Analysis of the relationship between the spatiotemporal evolution of GNSS strain field and earthquake events in Yunnan Region[J].Earthquake Research in China,36(1):91-104.(in Chinese)
魏斌,陈长云.2024新疆及邻区现今GNSS变形特征与地震关系研究[J].地震研究,47(3):419-429.
Wei B,Chen C Y.2024.Study on the Relationship between GNSS deformation characteristics and earthquakes in Xinjiang and its adjacent regions[J].Journal of Seismological Research,47(3):419-429.(in Chinese)
魏文薪,江在森,邵德胜,等.2018.2014年鲁甸6.5级地震GPS同震位移及反演分析[J].地球物理学报,61(4):1258-1265.
Wei W X,Jiang Z S,Shao D S,et al.2018.Coseismic displacements from GPS and inversion analysis for the 2014 Ludian 6.5 earthquake[J].Chinese Journal of Geophysics,61(4):1258-1265.(in Chinese)
吴中海,赵根模.2013.地震预报现状及相关问题综述[J].地质通报,32(10):1493-1512.
Wu Z H,Zhao G M.2013.The earthquake prediction status and related problems:A review.[J].Geological Bulletin of China,32(10):1493-1512.(in Chinese)
武艳强,江在森,王敏,等.2013.GNSS监测的芦山7.0级地震前应变积累及同震位移场初步结果[J].科学通报,58(20):1910-1916.
Wu Y Q,Jiang Z S,Wang M,et al.2013.Preliminary results of the co-seismic displacement and pre-seismic strain accumulation of the Lushan M_S7.0 earthquake reflected by the GPS surveying.[J].China Sci Bull,58(20):1910-1916.(in Chinese)
谢张迪,韩竹军.2019.2014年云南景谷M_S6.6地震发震断层及其动力学参数[J].地震地质,41(4):887-912.
Xie Z D,Han Z J.2019.Study on the seismogenic fault and dynamics parameters of the 2014 M_S6.6 Jinggu Earthquake in Yunnan[J].Seismology and Geology,41(4):887-912.(in Chinese)
徐克科,李伟.2017.利用GNSS基线分析芦山M_S7.0级地震前后应变演变特征[J].武汉大学学报·信息科学版,42(8):1054-1060.
Xu K K,Li W.2017.Strain evolution characteristics before and after Lushan M_S7.0 earthquake using GNSS baseline[J].Geomatics and Information Science of Wuhan University,42(8):1054-1060.(in Chinese)
许绍燮.1989.地震预报能力评分[C]//地震预报方法实用化研究文集:地震学专辑.北京:学术书刊出版社,586-590.
Xu S X.1989.Earthquake prediction ability score.Seismic prediction method practical research collection:Seismological Album[C].Beijing:Academic Press,586-589.(in Chinese)
赵静,刘杰,任金卫,等.2019.汶川、芦山地震前龙门山断裂带地壳形变特征对比分析[J].地球学报,40(1):186-198.
Zhao J,Liu J,Ren J W,et al.2019.A contrastive analysis of crustal deformation characteristics along the Longmen Shan fault zone before the M_S8.0 Wenchuan earthquake and the M_S7.0 Lushan earthquake[J].Acta Geoscientica Sinica,40(1):186-198.(in Chinese)
朱守彪,蔡永恩,石耀霖.2005.青藏高原及邻区现今地应变率场的计算及其结果的地球动力学意义[J].地球物理学报,48(5):1053-1061.
Zhu S B,Cai Y E,Shi Y L,et al.2005.Computation of the present-day strain rate field of the Qinghai Tibetan plateau and its geodynamic implications[J].Chinese Journal of Geophysics,48(5):1053-1061.(in Chinese)
朱治国,秦姗兰,艾力夏提·玉山,等.2018.基于GPS的精河M_S6.6地震前地壳变形动态特征研究[J].中国地震,34(3):428-434.
Zhu Z G,Qin S L,Ailixiati Y S,et al.2018.Study on the dynamic characteristics of crustal deformation before the Jinghe M_S6.6 earthquake based on the GPS[J].Earthquake Research in China,34(3):428-434.(in Chinese)
Hong M,Shao D S,Wu T F,et al.2018.Short-impending earthquake anomaly index extraction of GNSS continuous observation data in Yunnan,Southwestern China[J].Journal of Earth Science,29(1):230-236.
Wu Y Q,Jiang Z S,Pang Y,et al.2022.Statistical correlation of seismicity and geodetic strain rate in the Chinese mainland[J].Seismological Research Letters,93(1):268-276.

备注/Memo

备注/Memo:

收稿日期:2023-12-08.
基金项目:云南省地震局地震科技专项基金(2022ZX02); 自然资源部/云南省高原山地地质灾害预报预警与生态保护修复重点实验室开放课题(YNGGR2023-01).
第一作者简介:王伶俐(1981-),高级工程师,主要从事GNSS数据处理与预测预报工作.E-mail:lingli365@163.com.
通信作者简介:洪 敏(1982-),正高级工程师,主要从事GNSS数据分析与地震预测预报工作.E-mail:hmqr@qq.com.

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更新日期/Last Update: 2025-01-01