Depths of these hypocenters concentrate at about 12km deep in the upper crust.
这些震源深度集中在地壳上部约12公里处。
2
The distribution of hypocenters shows that there are two major seismic active belts in the northwestern Beijing.
震源位置分布表明，北京西北地区存在两条主要的地震活动断裂带。
3
The newly determined hypocenters are generally located closer to mapped surface fault traces than hypocenters for the same events previously determined by the BTSN.