论文部分内容阅读
地震定位一般是指确定震源的时空参数,包括震中经度、纬度、震源深度及发震时刻,对研究地震活动机制、地球内部结构等科学问题具有重要意义。大量理论及实际研究表明,影响地震定位精度的因素主要有速度模型、震相拾取误差、台站分布和初始参数。Waldhauser和Ellsworth在2000年提出的双差定位方法能在一定程度上消除速度模型不准确带来的
Seismic location generally refers to the determination of space-time parameters of a hypocenter, including the longitude and latitude of the epicenter, the depth of the hypocenter and the time of the epoch, which is of great significance to the study of the seismic mechanism and the internal structure of the Earth. A large number of theoretical and practical studies have shown that the main factors affecting the accuracy of seismic positioning velocity model, phase picking error, station distribution and the initial parameters. The double-difference positioning method proposed by Waldhauser and Ellsworth in 2000 can eliminate the inaccurate speed model to a certain extent