霍山皖33井水位突变异常成因的研究
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摘要
地下水位异常在地震前兆信息中占有重要地位,但观测资料所受干扰较多,异常成因较为复杂,探寻水位异常来源对准确判断震情有重要作用。该文在对安徽霍山皖33井水位1998年以来的资料进行系统清理总结以及环境干扰进行较为详细的调查分析的基础上,通过观测系统准确性的对比试验,得出以下结论:水位基本不受环境因素干扰,但观测系统是影响水位突变的一个不可忽视的因素。在排除干扰异常,提高水位观测质量,以获取更为可靠的地震前兆信息方面进行了有益的尝试。
Water level observation data can be influenced by various factors or be caused by complicated reasons,therefore,research on the causesof abnormity is of significant importance in terms of the earthquake prediction accuracy.In this paper,we give a systematic analysis of the water level changes of Huoshan 33 well in Anhui province since 1998 and a detailed investigation of the environmental influences on the water level changes.Further comparative experiments with the observation system show that the environmental influences scarcely affect the water level,whereas the observation system proves to be a non-negligible factor that may have a profound effect on the water level observation.Through the study in the paper,we have made beneficial efforts to enhance the quality of observation data and obtain more reliable earthquake precursory signals by eliminating interferences.
Water level observation data can be influenced by various factors or be caused by complicated reasons,therefore,research on the causesof abnormity is of significant importance in terms of the earthquake prediction accuracy.In this paper,we give a systematic analysis of the water level changes of Huoshan 33 well in Anhui province since 1998 and a detailed investigation of the environmental influences on the water level changes.Further comparative experiments with the observation system show that the environmental influences scarcely affect the water level,whereas the observation system proves to be a non-negligible factor that may have a profound effect on the water level observation.Through the study in the paper,we have made beneficial efforts to enhance the quality of observation data and obtain more reliable earthquake precursory signals by eliminating interferences.
引文
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[2]车用太,刘五洲,鱼金子,等.井水位对地壳应力-应变响应灵敏度的研究[J].地震,2003,23(3):113-120.
[3]车用太,鱼金子.地下流体典型异常的调查与研究[M].北京:气象出版社,2004.
[4]中国地震局监测预报司.地震前兆异常落实工作指南[M].北京:地震出版社,2000.71-82.
[5]国家地震局预测预防司.地下流体地震预报方法[M].北京:地震出版社,1997.67-87.
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