shallow-focus earthquake
... shale页岩 shallow-focus earthquake浅源地震 shanty town贫民区棚户区 ...
shallow earthquake
... 页岩含量 shaliness 浅源地震 shallow earthquake 浅部形貌 shallow feature ...
shallow earthquakes
浅源地震( shallow—focus earthquake)震源深度在70公里以内的地震。它发震的频率最多,对人类的影响也最大,若以释放的能量多少来比较,百分之八十五是浅源地震。在大陆上,浅源地震占百分之九十五以上,因此地震灾害主要由浅源地震造成。