2013年甘肃岷县漳县6.6级地震前邻近区域水管倾斜和伸缩应变观测结果  

ANALYSIS OF OBSERVATION DATA OF WATER-TUBE TILTER AND EXTENSOMETER BEFORE 2013 MINXIAN-ZHANGXIAN EARTHQUAKE

作　　者：唐九安[1] 沈旭章[1] 高安泰[1] 

机构地区：[1]中国地震局兰州地震研究所,兰州730000

出　　处：《大地测量与地球动力学》2014年第6期14-19,共6页Journal of Geodesy and Geodynamics

基　　金：中国地震局地震预测研究所基本科研业务专项(2014IESLZ03);甘肃省自然基金项目(1208RJZA178);地震行业专项

摘　　要：计算分析了2013年甘肃岷县漳县6.6级地震邻近区域300 km范围内6个定点形变台站2009-01-01~2013-07-21（地震前一天）26道水管和伸缩仪整点观测数据。通过对数据进行预处理和潮汐参数计算,初步评价了观测数据的质量,并给出了主要潮汐响应参数和平滑数据的日均值曲线。基于日均值曲线分析了形变速率的动态特征,展示了数据观测中较为明显的速率转折和突变,探讨了这些变化与岷县漳县6.6级地震之间的可能联系。The data of 26 channel water-tube tilter and extensometer at 6 permanent stations located around the epicenter of 2013 Minxian-Zhangxian earthquake with Ms 6.6 during the period of January 1,2009 and July 21, 2013 （one day before the Minxian-Zhangxian earthquake）were analyzed. The raw data were preprocessed and tidal analyzed, and the quality of the observation was estimated. The tidal response parameters and the smoothed day av- eraged value were obtained. The relationship between dynamic characteristics of the deformation rates and the earth- quake were discussed.

关 键 词：水管倾斜仪及伸缩仪 数据预处理 日均值曲线 形变速率转折点 岷县漳县6.6级地震 

分 类 号：P315[天文地球—地震学]