地震学报（英文版）2004，Vol.17Issue(z1)：163-171,9.
Recurrence anomaly of ground water behavior before strong earthquakes in North China
Recurrence anomaly of ground water behavior before strong earthquakes in North China
摘要
Abstract
By analyzing the relationship between ground water behavior and strong seismic activity during the past more than20 years in North China, we have found similar water level descending variation of a part of wells in theshort-term stage before several strong earthquakes. The characteristics of anomaly are: at the beginning, waterlevel dropped abruptly or accelerated to drop; then it turned to slow rising with a smaller amplitude than that ofdescending; earthquakes occurred during the slow-rising process of water level, and at that time or beforeearthquake occurrence, water level rose with a large amplitude. Among more than 100 wells in North China, thedescending anomalies were not recorded for many times, but similar variation processes of water level were notedat different wells before several strong earthquakes, which proves that seismic precursory anomalies of groundwater are of certain recurrence features, occurring repeatedly before different strong earthquakes. Therefore, it isnecessary to study the genesis of this type of anomaly and its relationship with strong seismic activity.关键词
North China/strong earthquake/dynamic state of water level/short-term stage/recurrenceKey words
North China/strong earthquake/dynamic state of water level/short-term stage/recurrence分类
天文与地球科学引用本文复制引用
曹新来,边庆凯..Recurrence anomaly of ground water behavior before strong earthquakes in North China[J].地震学报（英文版）,2004,17(z1):163-171,9.基金项目
Key project of Ministry of Science and Technology during the Tenth Five-year Plan (2001BA601B 01-01-01). （2001BA601B 01-01-01）
