据报道，此次地震震源深度4公里。
The fresh quake is reported to have a depth of 4-kilometers.
从震中到震源的距离叫震源深度。
From the epicenter of the distance to the source told focal depth.
这些震源深度集中在地壳上部约12公里处。
Depths of these hypocenters concentrate at about 12km deep in the upper crust.
每条轨迹起点上的数字是震源方位角与震源深度。
The number above the beginning of each trace is the source azimuth and below is the epicentral distance.
据报道，震中距离巴东海岸30英里，震源深度约53英里。
Its epicentre was reported to be about 30 miles offshore from Padang, at a depth of about 53 miles.
地震的全局阵列记录用于深度相的识别和建模，可精确估计震源深度。
Records of earthquakes at global arrays have been used for identification and modelling of depth phases in order to make accurate estimation of focal depths.
小震震源深度的分布情况表明，两次历史大震的震源断层可能都比较浅。
The distribution of focal depths of small earthquakes shows that focal faults of the two historical strong earthquakes should be shallow.
结果表明，利用“双差法”可以大大提高定位精度特别是震源深度的定位精度。
The results show that the locating precision obtained by hypoDD can be advanced greatly especially for the locations of the depths.
对于同样大小的地震，由于震源深度不一样，对地面造成的破坏程度也不一样。
An earthquake's point of initial ground rupture is called its focus or hypocenter.
在震源深度附近的介质中，局部水平错动可达4公里左右，上地幔顶部在此隆起。
The local horizontal dislocation reaches about 4 km in the medium at the focal depth, where the upper mantle rises.
结果表明，用这些震相测定地震震源深度，提高了台站测定远震震源参数的精度。
It is indicated that the precision of depth determined by this station is improved for the distant earthquakes if this approach is used.
汶川地震的主震发生在具有右旋性质的仰冲型断层带上，震源深度为15公里左右。
The main shock occurred on the dextral obduction-type fault zone and the hypocenter depth was about 15km .
构造带的推覆构造特征很可能控制了地震震源深度、震中区与烈度区的不同位等特征。
The characters of the nappe structure may control the locations of the focus and epicenter as well as the other features.
下午1点41分大理白族自治州洱源县发生地震，震源深度9公里，当地居民震感强烈。
Residents felt the quake strongly after it hit Eryuan County, Dali Bai Autonomous Prefecture at 1:41 p. m. with its epicenter 9 km deep.
当把震源深度浅、靠近大城市和土壤规格参数表三者结合在一起时，就能带来巨大破坏。
But when you combine the shallow depth, proximity to a major city and soil characteristics, it was capable of immense damage.
此次地震的震中距离中心城市仅20公里之遥，震源深度只有10公里，整个城市剧烈晃动。
With the epicentre only 20km from the central city and the quake only 10km deep, the whole city got a mighty shaking.
据美国地质勘探局消息，印尼西北部苏门答腊岛7日早上发生里氏7.8级地震，震源深度46公里。
A major earthquake of 7.8 magnitude Wednesday morning struck at a depth of 46km off the northwestern coast of the Indonesian island of Sumatra, the US Geological Survey said.
地震于当地时间午后发生，震源深度距圣克鲁斯群岛约5公里，此前这一地区曾发生6.3级地震。
The magnitude 8 quake hit just after 12pm local time at a depth of 5 kilometers off the Santa Cruz Islands, following a magnitude 6.3 quake in the same area.
计算每个可能震中位置的目标函数，取目标函数最小值为震中，并以此可分层计算得到震源深度及发震时刻。
In this method first the objective function of each possible epicenter is calculated then the exact epicenter can be defined under such a condition that the objective function is minimum.
震源深度最深的地震是1963年发生印度尼西亚伊里安查亚省北部海域的5.8级地震，震源深度786公里。
Focal depth of the earthquake is the most in 1963 in Indonesia Irian Jaya province in northern waters of the 5.8 earthquake, the focal depth of 786 km.
震源深度最深的地震是1963年发生印度尼西亚伊里安查亚省北部海域的5.8级地震，震源深度786公里。
Focal depth of the earthquake is the most in 1963 in Indonesia Irian Jaya province in northern waters of the 5.8 earthquake, the focal depth of 786 km.
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