中文摘要：

提高地震定位精度一直是地震学应用研究的重要课题之一，目前已经发展了多种方法用于台网定位。这些方法的共同弱点是应对复杂情况的能力差、震后处理时间过长、不能根据地震信息的增加自动修改速度模型而提高下一次地震定位的精度。开发地震台网资源，使之实现地震预警的功能，必须解决地震快速定位问题。为此，本文提出了一种基于地震台网资料的网格化地震定位方法。震前建立每个区间网格到台站的理论走时数据库，震时仅通过优化搜索，以每两个台站的到时差与理论走时差之间的方差最小的网格位置为震源，并得到发震时刻。通过在黑龙江省地震台网的实际应用说明方法可靠．精度较高。

英文摘要：

Earthquake locating is one of the most classic and basic problem of seismology, and improveing the locating precision is still an important problem in seismological application study. At present, kinds of the method of location were developed. A new method of earthquake location is introduced in this paper. It is one of straight search methods, and is unlike other travel-time location methods. It abstains from computing the deflection differential coefficient. In the area of Heilongjiang Province and its near, namely east longitude ：120 - 136, north latitude： 42 - 54, depth of the earth＇ s crust- 33 km, the authors process the partition of space grid, set up the theoretical traveltime model, use the arrival-time difference in theory and practice, station and station, simultaneously improve the search method. By practically using, the authors conclude that this method is credible and with high precision.