地震工程学报2017，Vol.39Issue(z1)：72-78,7.DOI:10.3969/j.issn.1000-0844.2017.Supp.072
2016年10月20日射阳MS4.4地震前地下流体典型异常特征及其前兆机理分析
Underground Fluid Anomalies and Precursor Mechanisms of Sheyang MS4.4 Earthquake of Oct.20,2016
摘要
Abstract
In this paper,we summarize the characteristics of the typical underground fluid anoma-lies associated with the Sheyang MS4.4 earthquake that occurred on Oct.20,2016,and discuss the precursor mechanisms.Our analysis results show that the underground fluid anomalies prior to the earthquake can be divided into medium-and short-term anomalies.The medium-term anom-alies are distributed within a 300-km radius of the epicenter and initially migrated from the epi-center to the outer area and then near to the epicenter.Compared to the medium-term anomalies, the short-term anomalies are located much closer to the epicenter,being distributed within 100-200 km of the epicenter and migrate close to the epicenter.The spatial properties and distribution characteristics of the anomalies show that the change in the water-temperature anomalies,which occurred prior to the Sheyang earthquake,may be caused by regional stress variations.关键词
射阳MS4.4地震/地下流体/典型前兆异常Key words
Sheyang MS4.4 earthquake/underground fluid/typical precursory anomalies分类
天文与地球科学引用本文复制引用
缪阿丽,周志华,叶碧文,王维,沈红会,张艺..2016年10月20日射阳MS4.4地震前地下流体典型异常特征及其前兆机理分析[J].地震工程学报,2017,39(z1):72-78,7.基金项目
地震监测预报专项(1770505) （1770505）
地震动力学国家重点实验室开放基金课题(LED2013B04) （LED2013B04）
