张北-尚义地震前太平庄井地下流体中短期异常

• 作 者: 张培仁 刘成龙 王志敏 陶京玲
• 机 构: 中国地震局地质研究所
• 出 处: 地震地质
• 发表日期: 1998年02期
• 关键词: 地下流体 短期异常 张北 中期异常 尚义 前兆异常 地壳活动 井水位 首都圈地区 区域应力场

张北－尚义地震前，北京太平庄井地下流体多次出现异常，这些异常虽然在时间上与１９９７年５月２５日张家口４．２级和１９９７年１０月２１日乌拉特后旗５．０级地震相对应，但笔者认为应该将这些异常群体与地震活动都看作是华北北部地区地壳活动的反应，是整个区域应力场应力不断增强的反应，是张北－尚义地震的中短期前兆异常。

Before the Shangbei-Shangyi Earthquake, the underground fluid in Taipingzhuangjing in Beijing had many times anomalies. Although these anomalies were time-synchronized with Zhangjiakou 4.2 at May 25, 1997 and Wulatehouqi at 21 October 1997, Earthquakes. However, in my opinion, these abnormal groups and earthquakes should be regarded as the reaction of the crustal activity in the northern part of North China, and the reaction of the stress field in the whole area is constantly increasing. It is the short and medium term of the Zhangbei-Shangyi earthquake Precursor abnormalities.