汪清7.2级深震地下流体动态异常探析
- 吉林省地震局, 吉林长春 130022
作者简介:
李富(1942-),男(汉族),吉林省长春市人,吉林省地震局高级工程师,主要从事地震地下流体分析预报研究工作.
- 收稿日期:
2003-02-08
- 刊出日期:
2003-09-15
摘要: 2002年6月29日汪清7.2级深震前,吉林省地下流体观测网部分井孔观测到一组从趋势到短期前兆异常。本文阐述这些异常出现的特征和时空演化过程。认为异常出现的时间与震中距密切相关,其空间展布具有迁移性,中期异常由外围向震中收缩,其速率很小,进入短期阶段,岩石处于失稳、临失稳状态,水位异常由震中向外围发散,速率迅速加大。同时发现了异常盲区即深震的震中区,它对预测深震中有非常实际的意义,同时对研究板块运动、地球动力学过程也有一定的参考价值。
STUDY ON THE SUBSURFACE FLUID ANOMALIES BEFORE WANGQING MS7.2 DEEP EARTHQUAKE
- Seismological Bureau of Jilin Province, Changchun 130022, China
- Received Date:
2003-02-08
- Publish Date:
2003-09-15
Abstract: Before Wangqing Ms7.2 deep earthquake occurred on June 29 of 2002, a group of tendency and short-term precursory anomalies were observed by part wells of the subsurface fluid observing net in Jilin. The characteristics of these anomalies and its evolving process in time and space are presented here. The results show that the time that anomalies appear is relevant to distance of epicenter, and its distribution has migratory feature, which contracts from outside to inside with a low speed in medium term period, and exhales from epicenter to outside with a high speed in short term period. The blind zone of anomaly is epicenter region.
李富, 刘俊清, 张晨侠, 张洪艳. 汪清7.2级深震地下流体动态异常探析[J]. 华北地震科学, 2003, 21(3): 19-22.
| 引用本文: |
李富, 刘俊清, 张晨侠, 张洪艳. 汪清7.2级深震地下流体动态异常探析[J]. 华北地震科学, 2003, 21(3): 19-22.
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LI Fu, LIU Jun-qing, ZHANG Chen-xia, ZHANG Hong-yan. STUDY ON THE SUBSURFACE FLUID ANOMALIES BEFORE WANGQING MS7.2 DEEP EARTHQUAKE[J]. North China Earthquake Sciences, 2003, 21(3): 19-22.
| Citation: |
LI Fu, LIU Jun-qing, ZHANG Chen-xia, ZHANG Hong-yan. STUDY ON THE SUBSURFACE FLUID ANOMALIES BEFORE WANGQING MS7.2 DEEP EARTHQUAKE[J]. North China Earthquake Sciences, 2003, 21(3): 19-22.
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