形变观测是地球物理观测的重要手段之一,以能够清楚地观测地球固体潮汐为发展目标,对地震监测预报具有重要作用。为进一步加强山西省地震监测及预测预报工作,全面了解和掌握1985年以来山西省形变观测资料的变化,探讨形变台网观测资料在监测预报中发挥的重要作用,系统梳理山西地区形变观测资料变化,对山西省历史及目前运行的形变学科仪器、数量等进行全面摸排,为该区形变观测工作提供参考。结果表明,山西形变观测已有一定规模,并具有以下特征:①观测仪器设备种类多,监测手段全,但仪器标准化程度不高;②观测资料具有一定的映震能力;③观测环境较复杂,应进一步做好观测环境保护。
Deformation observation is one of the important means of geophysical observation, with the development goal of clearly observing the Earth’s solid tides, playing an important role in earthquake monitoring and prediction. In order to further strengthen earthquake monitoring and prediction work in Shanxi Province, comprehensively understand and grasp the changes in deformation observation data in Shanxi Province since 1985, and discuss the important role of deformation network observation data in monitoring and prediction, this paper systematically summarizes the changes in deformation observation data and makes a comprehensive survey of the historical and current operating deformation instruments and quantities in Shanxi Province, providing a reference for deformation observation work in this area. The results indicate that deformation observation in Shanxi Province has reached a certain scale and has the following characteristics: ①There are many types of observation instruments and equipment, with complete monitoring methods, but the standardization level of instruments is not high; ②The observation data has a certain ability to reflect earthquakes;③The observation environment is relatively complex, and the observation environment should be further protected.
2023,44(6): 131-137 收稿日期:2023-8-29
DOI:10.3969/j.issn.1003-3246.2023.06.019
基金项目:太原大陆裂谷国家野外科学观测研究站研究课题(项目编号:NORSTY2022-04);山西省地震局科研项目(项目编号:SBK-2326)
作者简介:魏凯艳(1997—),硕士研究生,助理工程师,主要从事地壳形变与地震预测研究工作。E-mail:1743700043@qq.com
*通讯作者:李惠玲(1980-),女,高级工程师,主要从事地震预测预报工作。E-mail:king_ling@126.com
参考文献:
白玉柱,徐锡伟,徐杰.断裂分段之间不同相互作用对断裂运动的影响[J].华北地震科学,2012,30(2):33-38.
蔡小超,唐红涛. 2022年青海门源MS 6.9地震前地壳形变特征初探[J].大地测量与地球动力学,2023,43(7):669-673.
程绍平,杨桂枝.山西中条山断裂带的晚第四纪分段模型[J].地震地质,2002,24(3):289-302.
国家地震局预测预防司.地壳形变分析预报方法[M].北京:地震出版社,1998.
郝洪涛,王青华,张新林,等.滇西地震预报实验场区重力长期变化特征及其机理[J].地震地质,2022,44(4):876-894.
江娃利,谢新生,王焕贞,等.山西大同盆地恒山北缘断裂全新世古地震活动[J].中国地震,2003,19(1):8-19.
刘北京.地震预报现状及相关问题探讨[J].科技经济导刊,2020,28(18):110-154.
毛泽斌,常祖峰,李鉴林,等.景谷M 6.6地震震中区断裂晚第四纪活动[J].地震地质,2019,41(4):821-836.
牛安福,张凌空,章静,等.临震前地壳变形不动点现象与机制研究[J].大地测量与地球动力学,2020,40(1):1-6.
王焕,李海兵,张蕾,等.龙门山断裂带假玄武玻璃特征及断层弱化机制的探讨[J].地球物理学报,2018,61(5):1 698-1 714.