2013年甘肃岷县漳县6.6级地震前后重力场动态变化

doi:10.3969/j.issn.0253-4967.2014.03.010

地震地质 ›› 2014, Vol. 36 ›› Issue (3): 667-676.DOI: 10.3969/j.issn.0253-4967.2014.03.010

2013年甘肃岷县漳县6.6级地震前后重力场动态变化

祝意青^1,2, 赵云峰¹, 李铁明³, 梁伟锋¹, 徐云马¹, 郭树松¹

1. 中国地震局第二监测中心, 西安 710054;
2. 中国科学院测量与地球物理研究所, 大地测量与地球动力学国家重点实验室, 武汉 430077;
3. 中国地震局地质研究所, 北京 100029

收稿日期:2013-12-31 修回日期:2014-04-28 出版日期:2014-09-30 发布日期:2014-09-30
作者简介:祝意青|男|1962年生|1983年毕业于武汉测绘学院大地测量系|获学士学位|研究员|主要从事重力测量与地球动力学及地震分析预报研究|E-mail：zhuyiqing@ 163.com。
基金资助:
中国地震局地震行业科研专项（201308009）、国家自然科学基金（41274083，41374026）和大地测量与地球动力学国家重点实验室开放基金（SKLGED201331E）共同资助。

DYNAMIC VARIATION OF GRAVITY FIELD BEFORE AND AFTER THE MINXIAN-ZHANGXIAN M_S6.6 EARTHQUAKE ON JULY 22, 2013, GANSU, CHINA

ZHU Yi-qing^1,2, ZHAO Yun-feng¹, LI Tie-ming³, LIANG Wei-feng¹, XU Yun-ma¹, GUO Shu-song¹

1. Second Crust Monitoring and Application Center, China Earthquake Adiministration, Xi'an 710054, China;
2. State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China;
3. Institute of Geology, China Earthquake Administration, Beijing 100029, China

Received:2013-12-31 Revised:2014-04-28 Online:2014-09-30 Published:2014-09-30

摘要/Abstract

摘要：

利用青藏高原东北缘2011—2013年期间的流动重力观测资料，系统分析了区域重力场动态变化及其与2013年7月22日岷县漳县6.6级地震发生的关系。结果表明：1）测区内重力场异常变化与主要断裂带在空间上关系密切，反映沿主要断裂带（段）在2011—2013年期间发生了引起地表重力变化效应的构造活动或变形。2）岷县漳县6.6级地震前，测区内先出现了较大空间范围的区域性重力异常，后在震源区附近产生了局部重力异常及重力变化高梯度带，其中，甘肃临夏与岷县一带重力差异变化达150×10^-8ms^-2 以上；这些可能反映岷县漳县地震前，区域及震源区附近均产生与该地震孕育、发生有关的构造运动或应力增强作用。3）重力场1a尺度动态变化图像和差分动态演化图像均反映岷县漳县6.6级地震孕育过程的最后2a出现较显著的流动重力异常变化，地震发生在NE向重力变化高梯度带上、重力变化零值线附近和等值线的拐弯部位。4）基于流动重力异常变化在岷县漳县6.6级地震前做过一定程度的中期预测，尤其是地点判定。

关键词: 青藏高原东北缘, 岷县漳县6.6级地震, 重力观测, 重力变化, 构造活动

Abstract:

Using the observation data of relative gravity measurements from the northeastern edge of the Tibetan plateau, we have systematically analyzed the spatial-temporal variation of the regional gravity field and their relation to the occurrence of the M_S 6.6 Minxian-Zhangxian earthquake on July 22, 2013. Our research mainly shows that: 1)Spatially the anomaly change of the regional gravity field is closely related to the major fault zones in the region, suggesting that the tectonic activities or deformation which happened along the fault zones(or segments)during 2011 to 2013 would have resulted in the variation in the ground gravity observations. 2)Before the M_S 6.6 Minxian-Zhangxiang earthquake, regional gravity anomaly firstly appeared in the whole study region, and then local gravity anomalies and high gradient zone of gravity change appeared at and near the potential source area. Among the areas of gravity anomalies, the anomaly variations near Linxia and Minxian were up to and over 150×10^-8ms^-2, indicating possibly the tectonic movement or stress enhancement in the study region and around the potential source area, which could be related to the preparation and occurrence of the earthquake. 3)The dynamic change patterns and the differential evolution patterns of gravity variation of one year scale suggest that significant anomalies of gravity variations in the mobile gravity measurements appeared indeed in the last two years of the preparation process of the M_S 6.6 Minxian-Zhangxian earthquake. The earthquake occurred on the NE-trending high gradient zone near the zero curve and the turning part of contours of gravity change. 4)To a certain degree, we made a medium-term forecast before the Minxian-Zhangxian M_S 6.6 earthquake, especially a forecast for the locality of the earthquake based on the anomalous gravity variations.

Key words: northeastern edge of the Tibetan plateau, Minxian-Zhangxian M_S 6.6 earthquake, gravity observation, gravity variation, tectonic activity

中图分类号:

P315.72⁺6

祝意青, 赵云峰, 李铁明, 梁伟锋, 徐云马, 郭树松. 2013年甘肃岷县漳县6.6级地震前后重力场动态变化[J]. 地震地质, 2014, 36(3): 667-676.

ZHU Yi-qing, ZHAO Yun-feng, LI Tie-ming, LIANG Wei-feng, XU Yun-ma, GUO Shu-song. DYNAMIC VARIATION OF GRAVITY FIELD BEFORE AND AFTER THE MINXIAN-ZHANGXIAN M_S6.6 EARTHQUAKE ON JULY 22, 2013, GANSU, CHINA[J]. SEISMOLOGY AND GEOLOGY, 2014, 36(3): 667-676.

参考文献

顾功叙, Kuo J T, 刘克人, 等. 1997. 中国京津唐张地区时间上连续的重力变化与地震的孕育和发生
[J]. 科学通报, 42(18): 1919-1930.
GU Gong-xu, Kuo J T, LIU Ke-ren, et al. 1997. Seismogenesis and occurrence of earthquakes as observed by temporally continuous gravity variations in China
[J]. Chinese Science Bulletin, 42(18): 1919-1930(in Chinese).
李辉, 付广裕, 孙少安, 等. 2000. 滇西地区重力场动态变化计算
[J]. 地壳形变与地震, 20(1): 60-66.
LI Hui, FU Guang-yu, SUN Shao-an, et al. 2000. Computation on dynamic gravity changes in the western area of Yunnan Province
[J]. Crustal Deformation and Earthquake, 20(1): 60-66(in Chinese).
梁伟锋, 刘芳, 徐云马, 等. 2013. 青藏高原东缘重力观测及对芦山M7.0地震的反映
[J]. 地震工程学报, 35(2): 266-271.
LIANG Wei-feng, LIU Fang, XU Yun-ma, et al. 2013. Gravity observations along the eastern margin of the Tibetan plateau and an application to the Lushan M_S7.0 earthquake
[J]. Earthquake Science, 26(3-4): 251-257.
马瑾, 马胜利, 刘力强. 1995. 地震前异常的阶段性及其空间分布特征
[J]. 地震地质, 17(4): 363-371.
MA Jin, MA Sheng-li, LIU Li-qiang, et al. 1995. The stages of anomalies before an earthquake and characteristics of the spatial distribution
[J]. Seismology and Geology, 17(4): 363-371(in Chinese).
马瑾, 马胜利, 刘力强, 等. 2000. 交叉断层的交替活动与块体运动的实验研究
[J]. 地震地质, 22(1): 65-73.
MA Jin, MA Sheng-li, LIU Li-qiang, et al. 2000. Experimental study on alternate slip of intersecting faults and block movement
[J]. Seismology and Geology, 22(1): 65-73(in Chinese).
马瑾, 刘力强, 刘培洵, 等. 2007. 断层失稳错动热场前兆模式: 雁列断层的实验研究
[J]. 地球物理学报, 50(4): l141-1149.
MA Jin, LIU Li-qiang, LIU Pei-xun, et al. 2007. Thermal precursory pattern of fault unstable sliding: An experimental study of en echelon faults
[J]. Chinese Journal of Geophysics, 50(4): 1141-1149(in Chinese).
马瑾, 刘培洵, 刘远征. 2013. 地震活动时空演化中看到的龙门山断裂带地震孕育的几个现象
[J]. 地震地质, 35(3): 461-471. doi: 10.3969/j.issn.0253-4967.2013.03.001.
MA Jin, LIU Pei-xun, LIU Yuan-zheng. 2013. Features of seismogenic process of the Longmenshan Fault zone derived from analysis on the temporal-spatial evolution of earthquakes
[J]. Seismology and Geology, 35(3): 461-471(in Chinese).
滕吉文, 白登海, 杨辉, 等. 2008. 2008年汶川M_S8.0地震发生的深层过程和动力学响应
[J]. 地球物理学报, 51(5): 1385-1402.
TENG Ji-wen, BAI Deng-hai, YANG Hui, et al. 2008. Deep processes and dynamic responses associated with the Wenchuan M_S8.0 earthquake of 2008
[J]. Chinese J Geophys, 51(5): 1385-1402(in Chinese).
郑文俊, 闵伟, 何文贵, 等. 2013. 2013年甘肃岷县漳县6.6级地震震害分布特征及发震构造分析
[J]. 地震地质, 35(3): 604-615. doi: 10.3969/j.issn.0253-4967.2013.03.014.
ZHENG Wen-jun, MIN Wei, HE Wen-gui, et al. 2013. Distribution of the related disaster and the causative tectonic of the Minxian-Zhangxian M_S6.6 earthquake on July 22, 2013, Gansu, China
[J]. Seismology and Geology, 35(3): 604-615(in Chinese).
祝意青, 李辉, 朱桂芝, 等. 2004. 青藏块体东北缘重力场演化与地震活动
[J]. 地震学报, 26(增): 71-78.
ZHU Yi-qing, LI Hui, ZHU Gui-zhi, et al. 2004. Gravity evolution and earthquake activities of the northeastern edge of Qinghai-Tibet block
[J]. Acta Seismologica Sinica, 26(Suppl): 71-78(in Chinese).
祝意青, 胡斌, 朱桂芝, 等. 2005. 民乐6.1、岷县5.2级地震前区域重力场变化研究
[J]. 大地测量与地球动力学, 25(1): 24-29.
ZHU Yi-qing, HU Bin, ZHU Gui-zhi, et al. 2005. Research on the variation of gravity field before Minle M_S6.1 and Minxian M_S5.2 earthquakes
[J]. Journal of Geodesy and Geodynamics, 25(1): 24-29(in Chinese).
祝意青, 徐云马, 吕弋培, 等. 2009. 龙门山断裂带重力变化与汶川8.0级地震关系研究
[J]. 地球物理学报, 52(10): 2538-2546. doi: 10.3969/j.issn.0001-5733.2009.10.012.
ZHU Yi-qing, XU Yun-ma, LU Yi-pei, et al. 2009. Relations between gravity variation of Longmenshan Fault zone and Wenchuan M_S8.0 earthquake
[J].Chinese J Geophys, 52(10): 2538-2546(in Chinese).
祝意青, 梁伟锋, 徐云马, 等. 2010. 汶川M_S8.0地震前后的重力场动态变化
[J]. 地震学报, 32(6): 633-640.
ZHU Yi-qing, LIANG Wei-feng, XU Yun-ma, et al. 2010. Dynamic variation of gravity field before and after Wenchuan M_S8.0 earthquake
[J]. Acta Seismologica Sinica, 32(6): 633-640(in Chinese).
祝意青, 刘芳, 付广裕, 等. 2012a. 汶川地震前后青藏高原东北缘重力场动态变化研究
[J].地震, 32(2): 88-94.
ZHU Yi-qing, LIU Fang, FU Guang-yu, et al. 2012a. Study on gravity change before and after Wenchuan M_S8.0 earthquake in the northeastern edge of Qinghai-Tibet block
[J]. Earthquake, 32(2): 88-94(in Chinese).
祝意青, 梁伟锋, 陈石, 等. 2012b. 青藏高原东北缘重力变化机理研究
[J]. 大地测量与地球动力学, 32(3): 1-6.
ZHU Yi-qing, LIANG Wei-feng, CHEN Shi, et al. 2012b. Study on mechanism of gravity field change in northeastern margin of Qinghai-Tibet plateau
[J]. Journal of Geodesy and Geodynamics, 32(3): 1-6(in Chinese).
祝意青, 闻学泽, 孙和平, 等. 2013. 2013年四川芦山M_S7.0地震前的重力变化
[J]. 地球物理学报, 56(6): 1887-1894. doi: 10.6038/cjg20130611.
ZHU Yi-qing, WEN Xue-ze, SUN He-ping, et al. 2013. Gravity changes before the Lushan, Sichuan, M_S=7.0 earthquake of 2013
[J]. Chinese J Geophys, 56(6): 1887-1894(in Chinese).
Chen Y T, Gu H D, Lu Z X. 1979. Variations of gravity before and after the Haicheng earthquake, 1975 and the Tangshan earthquake, 1976
[J]. Physics of the Earth and Planetary Interiors, 18(4): 330-338.
Kuo J T, Zheng J H, Song S H. 1999. Determination of earthquake epicentroids by inversion of gravity variation data in the BTTZ region, China
[J]. Tectonophysics, 312(2): 267-281.
Zhu Y Q, Zhan F B, Zhou J, et al. 2010. Gravity measurements and their variations before the 2008 Wenchuan earthquake
[J]. Bulletin of the Seismological Society of America, 100(5B): 2815-282.

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2013年甘肃岷县漳县6.6级地震前后重力场动态变化

DYNAMIC VARIATION OF GRAVITY FIELD BEFORE AND AFTER THE MINXIAN-ZHANGXIAN M_S6.6 EARTHQUAKE ON JULY 22, 2013, GANSU, CHINA

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2013年甘肃岷县漳县6.6级地震前后重力场动态变化

DYNAMIC VARIATION OF GRAVITY FIELD BEFORE AND AFTER THE MINXIAN-ZHANGXIAN MS6.6 EARTHQUAKE ON JULY 22, 2013, GANSU, CHINA

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DYNAMIC VARIATION OF GRAVITY FIELD BEFORE AND AFTER THE MINXIAN-ZHANGXIAN M_S6.6 EARTHQUAKE ON JULY 22, 2013, GANSU, CHINA