Evaluation of earthquake parameters used in the Indonesian Tsunami Early Warning System

作     者：Madlazim Tjipto Prastowo 

作者机构：Department of PhysicsFaculty of Mathematics and Natural SciencesUniversitas Negeri SurabayaSurabaya 60231Indonesia research center for earth science studiesfaculty of mathematics and natural sciencesuniversitas negeri surabayaSurabaya 60231Indonesia 

出 版 物：《Earthquake Science》 (地震学报（英文版）)

年 卷 期：2016年第29卷第1期

页      面：27-33页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 070801[理学-固体地球物理学] 0707[理学-海洋科学] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 0814[工学-土木工程] 

主　　题：Ina-TEWS GLOBAL centroid momenttensor catalog Performance Accuracy Earthquakeparameters 

摘      要：Twenty-two of a total of 30 earthquake events reported by the Indonesian Agency for Geophysics, Cli- matology and Meteorology during the time period 2007-2010 were falsely issued as tsunamigenic by the Indonesian Tsunami Early Warning System （Ina-TEWS）. These 30 earthquakes were of different magnitudes and occurred in different locations. This study aimed to eval- uate the performance of the Ina-TEWS using common earthquake parameters, including the earthquake magni- tude, origin time, depth, and epicenter. In total, 298 data- sets assessed by the Ina-TEWS and the global centroid moment tensor （CMT） method were assessed. The global CMT method is considered by almost all seismologists to be a reference for the determination of these parameters as they have been proved to be accurate. It was found that the earthquake magnitude, origin time, and depth provided by the Ina-TEWS were significantly different from those given in the global CMT catalog, whereas the latitude and longitude positions of the events provided by both tsunami assessment systems were coincident. The performance of the Ina-TEWS, particularly in terms of accuracy, remains questionable and needs to be improved.