【摘要】 利用福建区域GPS连续观测资料计算出应变场,由跨断层垂直形变资料计算出形变速率强度累积率,并根据跨断层、体应变等多种形变资料得到各测点压张特性的空间分布。在此基础上,研究了福建区域2005—2006年、2007—2008年、2009—2010年各时期的形变特征。研究结果表明:龙岩-厦门-东山、政海带与沙县南日岛断裂带交界处这两个区域是能量累积区域,构造活动性较强,形变速率强度较高,以压性测点为主,发生中强地震的可能性比较大。更多还原

【Abstract】 Crustal strain field derived from the data from GPS observation network of Fujian area,the intensity accumulation rate of deformation velocity calculated from across-fault vertical deformation and tensile or compression of each station based on across-fault vertical deformation and other deformation observations are calculated,and then,based on these,the deformation characteristics in the periods:2005—2006,2007—2008 and 2009—2010 in Fujian area are studied.It shows that there are two areas,Xiamen-Longyan-Dongshan and the junction of Zhenghai and Shaxian Nanri island,with stronger tectonic activity,tendency accumulation,higher accumulation intensity,dominated mainly by compressive points,might be the zone with high risk of medium-strong earthquakes.更多还原