Partial Support of the International Seismological Center

这笔拨款继续了美国对设在英国的国际地震中心（ISC）的部分支持。这项奖助金提供的ISC预算比例约为20%。ISC的作用是每年从2000多个地震台站收集大约200万个读数，并定位大约6万个地震事件。这些数据大约在地震发生两年后，每两个月发表一次《国际地震委员会公报》和半年出版一次的《区域地震目录》。因此建立了一个30年的数据库。这些数据也以CD-ROM、软盘和磁带的形式提供。ISC公布的数据可以说是世界上最完整的地震目录来源。这些数据广泛用于研究地球结构、计算世界各地的地震危险，并作为《全面禁止核试验条约》监测组织的资料来源。这项研究是国家减少地震危害计划的一个组成部分。＊＊＊

9725096 Hughes This grant continues U.S. partial support of the International Seismological Centre (ISC) based in England. The proportion of the ISC budget provided by this grant is approximately 20 percent. The role of the ISC is to collect some two million readings each year from over two thousand seismic stations and locate about sixty thousand events. The data are published bi- monthly in the Bulletin of the ISC and the semi-annual Regional Catalogue of Earthquakes approximately two years after the occurrence of the events. A thirty-year database has thus been developed. The data are also made available on CD-ROM, diskette and magnetic tape. The data published by the ISC are arguably the most complete earthquake catalog source in the world. The data are used extensively in research on the structure of the earth, calculation of seismic hazard throughout the world, and as a source of information for the Comprehensive Test Ban Treaty monitoring organizations. This research is a component of the National Earthquake Hazard Reduction Program. ***