【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。更多还原

【Abstract】 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.更多还原