吉林省龙岗火山群现今活动性研究  

Study on Present Activity of Longgang Volcano in Jilin Province

作　　者：刘俊清[1,2] 丁广[1] 张晨侠[1] 武成智[1] 

机构地区：[1]吉林省地震局,长春130117 [2]吉林大学.地球探测科学与技术学院,长春130026

出　　处：《华北地震科学》2013年第1期31-33,44,共4页North China Earthquake Sciences

摘　　要：吉林省龙岗火山区30多年构造地震活动一直很频繁,地震活动性明显强于附近的构造单元;通过对50年来的一等精密水准复测资料和该地区地震活动分析,发现龙岗火山群地区地壳整体上升,累计上升速度达40cm,明显大于其它地区地壳运动速率。这一现象可能预示龙岗火山的活动性有增强趋势。Longgang volcanic area is in Jilin province of China, during the past 30 years, tectonic earthquakes in this area is more active than its adjacent tectonic units. Through first-class precise level survey data and the analysis of seismic activity during the past 50 years in the region, we find that the crust of longgang volcano group region is rising, and the rising velocity is up to 40 mm/yr which is significantly faster than that in other parts of the earth＇s crust. This phenomenon may indicate that the longgang volcano activity has increasing trend.

关 键 词：龙岗火山群 火山地震 火山形变 

分 类 号：P317.8[天文地球—固体地球物理学]