日本9.0级地震甘肃地下流体资料同震响应特征分析  

Characteristics of the Co-seismic Response of Fluid Data in the Gansu Area Prior to the 2011 Tohoku M9.0 Earthquake,Japan

作　　者：张昱 吴建华 陈瑶 冯建刚 曹玲玲 李春燕 郑卫平 

机构地区：[1]甘肃省地震局,甘肃兰州730000

出　　处：《地震工程学报》2017年第A01期97-101,共5页China Earthquake Engineering Journal

基　　金：中国地震局地震预测研究所兰州科技创新基地科研业务费专项(2017IESLZ07)

摘　　要：2011年3月11日日本东北部宫城县以东太平洋海域发生9.0级地震时,我国有不少地下流体台站记录到了丰富的同震响应现象,甘肃地区数字化地下流体观测资料也出现不同程度的同震响应。分析了该地震时甘肃地区数字化水位、水温同震变化特征和响应能力,发现井水位的同震响应有振荡和突变两种形态,多数在震后较快恢复原来状态。水温记录同震响应能力明显低于水位,仅有1个测项记录到同震响应,为短时间波动,且很快恢复。During the Tohoku M9.0 great earthquake of March 11 th,2011,the digital observation data on underground fluids in the Gansu area showed different degrees of co-seismic response.In this study,we analyzed the co-seismic change characteristics and response ability of the digital water levels and water temperature in the Gansu area during the earthquake.It was found that the co-seismic response of the water level had two main patterns:oscillation and mutation.The water level of most wells returned to the initial state a short time after the earthquake.The recorded water temperature data showed a lower response capacity than the water level data.Only one of the measurement instruments recorded the co-seismic response of the water temperature,but this was just a short-term fluctuation and it easily recovered.

关 键 词：日本强震 同震响应 甘肃地区 水位、水温 

分 类 号：P315.72[天文地球—地震学]