[1]张 慧,谢小玲,阎春恒,等.华南沿海地震带地震调制比特征分析[J].华南地震,2022,(04):109-116.[doi:10.13512/j.hndz.2022.04.15]
ZHANG Hui,XIE Xiaoling,YAN Chunheng,et al.Characteristics Analysis of Seismic Modulation Ratio of South China Coastal Seismic Zone[J].,2022,(04):109-116.[doi:10.13512/j.hndz.2022.04.15]
点击复制
华南沿海地震带地震调制比特征分析()
华南地震[ISSN:1006-6977/CN:61-1281/TN]
- 卷:
-
- 期数:
-
2022年04期
- 页码:
-
109-116
- 栏目:
-
华南地区地震预测指标体系专辑
- 出版日期:
-
2022-12-10
文章信息/Info
- Title:
-
Characteristics Analysis of Seismic Modulation Ratio of South China Coastal Seismic Zone
- 文章编号:
-
1001-8662(2022)04-0109-08
- 作者:
-
张 慧1; 谢小玲1; 阎春恒2; 王小娜3; 黄章荣1
-
1.海南省地震局,海口570203;2.广西壮族自治区地震局,南宁530000;3.广东省地震局,广州510070
- Author(s):
-
ZHANG Hui1; XIE Xiaoling1; YAN Chunheng2; WANG Xiaona3; HUANG Zhangrong1
-
1.Hainan Earthquake Agency , Haikou 570203, China;2.Earthquake Agency of Guangxi Zhuang Autonomous Region , Nanning 530000, China;3.Guangdong Earthquake Agency , Guangzhou 510070, China
-
- 关键词:
-
中强地震; 地震调制比
- Keywords:
-
Moderate and strong earthquakes; Seismic modulation ratio
- 分类号:
-
P315.7
- DOI:
-
10.13512/j.hndz.2022.04.15
- 文献标志码:
-
A
- 摘要:
-
利用调制比扫描方法,对1970—2019年华南沿海地震带5级以上中强震进行震前小震调制比全时空特征回溯性研究,分析区域中强地震前调制比时空演化过程。结果显示,调制比高值异常对华南沿海地震带中强震有一定的指示意义:调制比大于0.59且持续2个月则视为异常,高值异常空间尺度大于15000km2,中强震一般发生在异常开始2~15个月或异常消失1~10个月,震中位置大多在异常区域及周边120km范围内的区域,震级与调制比演化时间、空间特征不存在严格的相关性。预测效能评估R=0.50,R0=0.27。通过震例回溯,调制比异常可以作为一种辅助手段,研判未来中强地震发生的时间和位置。
- Abstract:
-
Using the modulation ratio scanning method,this paper conducts a retrospective study on the full time and space characteristics of the modulation ratio of small earthquakes before the moderate-strong earthquakes with M≥5 in the South China coastal seismic zone from 1970 to 2019,and analyzes the temporal and spatial evolution of the modulation ratio before the regional moderate-strong earthquakes. The results show that the abnormal high value of the modulation ratio has a certain indication significance for the moderate and strong earthquakes in the South China coastal seismic zone: When the modulation ratio is greater than 0.59 and lasts for 2 months, it is regarded as an anomaly;the spatial scale of the anomaly with high value is greater than 15 000 km2,and moderate and strong earthquakes generally occur 2-15 months after the anomaly begins or 1-10 months after the anomaly disappears;the epicenter is mostly in the anomaly area and the surrounding area within 120 km;there is no strict correlation between the magnitude and the time and space characteristics of the modulation ratio evolution. The predictive efficacy evaluation R=0.50, R0=0.27. Through the backtracking of earthquake cases, the anomaly of modulation ratio can be used as an auxiliary means to judge the time and location of moderate and strong earthquakes in the future.
参考文献/References:
[1]魏柏林,冯绚敏,陈国定,等.东南沿海地震活动特征[M].北京:地震出版社,2001.
[2] Lockner D A,Beeler N M. Premonitory slip and tidal triggering of earthquakes[J]. J Geophys Res,1999,104(B9):20133-20151.
[3]秦保燕,姚立珣,徐纪人,等.西海园地区小震调制特征[J].西北地震学报,1983,4(S1):1-5.
[4]张国民,李丽,黎凯武,等.强震成组活动与潮汐力调制触发[J].中国地震,2001,17(2):110-120.
[5]高锡铭,殷志山,王威中,等.固体潮应力张量对地震的触发作用[J].地震学报,1981,3(3):264-275..
[6] Tanaka S,Ohtake M,Sato H.Tidal triggering of earthquakes in Japan related to the regional tectonic stress[J]. Earth Planets&Space,2004,56(5):511-515.
[7] Tanaka S,Sato H,Matsumura S,et al. Tidal triggering of earthquakes in the subducting Philippine Sea plate beneath the locked zone of the plate interface in the Tokai region, Japan[J]. Tectonophysics,2006,417(1):69-80.
[8]陈学忠.地震潮汐触发[J].地震科学进展,2021,51(4):145-160.
[9] Schuster A. On lunar and solar periodicities of earthquakes [J]. Proc R Soc London,1987(61):455-465
[10]吴小平,冒蔚,黄雍,等.潮汐应力对发震断层作用的统计分析[J].地球物理学报,1999,42(S1):65-74.
[11]吴小平,黄雍,冒蔚,等.潮汐应力与云南及邻区的地震[J]. 云南大学学报(自然科学版). 2001,64(04):267-274.
[12] Tanaka S,Ohtake M,Sato H. Spatio-temporal variation of the tidal triggering effect on earthquake occurrence associated with the 1982 South Tonga earthquake of MW7.5 [J]. Geophys Res Lett,2002,29(16):1756-0.
[13]张晶,郗钦文,杨林章,等. 引潮力与潮汐应力对强震触发的研究[J].地球物理学报,2007,50(2):448-454.
[14]解朝娣,雷兴林,吴小平,等.潮汐应力对2007年MS6.4宁洱地震震源断层成核失稳过程的影响[J].中国科学:地球科学,2015,45(9):1409-1420.
[15]李金,蒋海昆.潮汐触发地震研究进展综述[J].地震, 2011,31(4):36-47.
[16]李金,蒋海昆.汶川地震余震活动固体潮调制的统计分析[J].中国地震,2011,27(4):363-375.
[17]李金,蒋海昆,桂荣,等.新疆喀什—乌恰交汇区潮汐触发地震活动的统计检验[J].中国地震,2014,30(1):64-73.
[18]王炜,宋先月,谢端,等.地震调制比及其在华北地震中期预报中的应用[J].地震,2001,21(2):7-12.
[19]李永莉,蔡静观,曹刻.云南地区强震活动过程中的调制比、b值[J].地震研究,2002,25(1):25-30.
[20]李永莉,张俊伟,刘丽芳,等.云南地区中强地震连发及其调制比的时空展布特征[J].地震研究,2004,27(3):230-236.
[21]王慧敏,吕梅梅,张永仙,等.华北地区2级以上地震活动图像研究及预测意义[J].地震,2004,24(1):65-70 .
[22]汪翠枝,曹井泉,郭洪丽,等.川滇地区调制/非调制地震短期震兆特征研究[J].中国地震,2010,26(2):210-217.
[23]韩颜颜,孟令媛,刘桂萍,等.西北地区中强震前固体潮调制比时空特征分析[J].地震学报,2017,39(5):738-750+818.
备注/Memo
- 备注/Memo:
-
收稿日期:2022-02-10
基金项目:海南省自然科学基金(422QN430)
作者简介:张慧(1983-),女,高级工程师,主要从事地震活动性、地壳深部结构等方面研究。E-mail: zhanghui8302@163.com
更新日期/Last Update:
2022-12-10