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

英文篇名：ANALYSIS OF OBSERVATION DATA OF WATER-TUBE TILTER AND EXTENSOMETER BEFORE 2013 MINXIAN-ZHANGXIAN EARTHQUAKE
中文刊名：大地测量与地球动力学
英文刊名：Journal of Geodesy and Geodynamics
作者：唐九安 ; 沈旭章 ; 高安泰
英文作者：Tang Jiuan ; Shen Xuzhang ; Gao Antai ; Lanzhou Institute of Seismology ; CEA
中文关键词：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
英文关键词：water-tube tilter and extensometer ; data preprocess ; day averaged value ; turning point of deformation rate ; Minxian-Zhangxian earthquake with Ms6.6
出版日期：2014-12-30
机构：中国地震局兰州地震研究所;
年：2014
期：06
出版单位：大地测量与地球动力学

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 averaged value were obtained. The relationship between dynamic characteristics of the deformation rates and the earthquake were discussed.

引文

1 唐九安.天顶距微分公式用于重力、倾斜和应变固体潮资料的拟合检验[J].地壳形变与地震,1990,10(2):1-8.(Tang Jiuan.The zenith distance formulas of the first order differential quotient for the theoretic value of the earth tides applied to the fit-testing of the gravity,tilter and line strain earth tides[J].Crustal Deformation and Earthquake,1990,10(2):1-8)
2 唐九安.计算固体潮潮汐参数的非数字滤波调和分析方法[J].地壳形变与地震,1999,19(1):49-55.(Tang Jiuan.Method of non-digital filter harmonic analysis for computing the earth tidal parameters[J].Crustal Deformation and Earthquake,1999,19(1):49-55)