PARTIAL SUPPORT OF THE INTERNATIONAL SEISMOLOGICAL CENTRE

这笔赠款用于继续为国际地震中心的业务提供部分支助。ISC得到国际支持，所要求的预算基于赞助国的相对GDP，美国提供的资金占这一时期估计运营成本的近20%。 为继续出版《国际空间委员会公报》提供了支助-这是关于地震震源、震级和震源机制以及台站到达时间、振幅和其他测量结果的全球权威性摘要，并在可能的情况下与原始波形相联系。 国际地震学委员会的国际支持和非政府联系使该中心能够从其他无法获得的全球地震记录来源收集和自由传播数据。 ISC公报支持全球地震学界对地球结构、地震物理学和地震灾害减轻进行基础研究。 该公报还有助于监测《全面禁止核试验条约》的执行情况。 ISC数据产品，特别是观测到的到达时间、振幅和相关Meta数据的全球目录，是地球结构和震源机制基础研究的起点。 在此赠款下的支持将允许继续开发和改进地震事件参数，这些参数在ISC公告中发布并在线提供，以及新的努力将目录及时扩展到1900年（前数字地震记录）和更低的震级阈值。 改进后的地震事件记录将有助于更好地了解历史上的全球地震活动，并导致更好的地球内部结构模型，后者对于确定地震事件源机制、震级和位置至关重要，有助于全面禁止核试验条约的监测。 ISC产品对于在十年时间尺度上保持明确准确的地震事件起源至关重要，并有助于改善全球抗震土木工程。支持的具体任务包括：1）从世界各地的网络和数据中心（包括国家地震信息中心（NEIC）、USAray、全面禁止核试验条约办公室（CTBTO）、日本气象厅（JMA）等）持续收集、自动合并和关联报告的公告数据; 2)人工审查震源、相位读数和几个网络同时报告的大约3.5级及以上事件的相关数据; 3）通过网络搜索、FTP、CD-ROM和印刷的ISC公告摘要分发ISC公告; 4）维修和更换与美国地质调查局管理的国家地震信息中心合作，5）维持和更新国际地震学和地球内部物理学协会参考事件集（GT 0 -5）; 6）部分支持扩展ISC-GEM全球仪器地震目录-用于全球和区域地震危险评估的最统一的全球长期目录; 7）维护和扩充ISC事件书目，以便快速检索与重大全球地震事件有关的文献。

This grant allows for renewed partial support of operations of the International Seismological Centre (ISC). The ISC is internationally supported and the requested budget is based on the relative GDPs of sponsor countries with funding from the U.S. near 20% of the estimated operational costs over this period. Support provides for continued production of the ISC Bulletin - the definitive global summary of earthquake hypocentres, magnitudes and source mechanisms, as well as station arrival times, amplitudes and other measurements with links to original waveforms where available. The international supported and non-governmental affiliation of the ISC allows the Centre to collect and freely distribute data from otherwise unavailable sources of global seismic recordings. The ISC Bulletin supports the global seismology community for fundamental research on Earth structure, earthquake physics and earthquake hazards mitigation. The Bulletin also aids in monitoring of the Comprehensive Test Ban Treaty. ISC data products, in particular the global catalog of observed arrival times, amplitudes, and associated meta data, are a starting point for fundamental studies of Earth structure and earthquake source mechanisms. Support under this grant will allow for continued development and refinement of seismic event parameters that are published in the ISC bulletin and available on line as well as new efforts to extend the catalog back in time to the 1900 (pre-digital seismic recordings) and to a lower magnitude threshold. The improved seismic event records will allow for improved understanding of historical global seismicity and lead to better models of Earth's interior structure, the later critical to identifying seismic event source mechanisms, magnitudes and locations that aid in comprehensive nuclear test ban treaty monitoring. ISC products are critical to maintaining definitive accurate seismic event provenance over decadal time scales and contribute to improved earthquake resistant civil engineering globally. Specific tasks to be supported include: 1) ongoing collection, automatic merging and association of reported bulletin data from networks and data centers around the world, including National Earthquake Information Center (NEIC), USArray, Comprehensive Test Ban Treaty Office (CTBTO), Japanese Meteorological Agency (JMA) etc.; 2) manual review of hypocentres, phase readings, and related data for events simultaneously reported by several networks approximately of magnitude 3.5 and above; 3) distribution of the ISC Bulletin by means of the web-search, ftp, CD-ROMs and the printed ISC Bulletin Summary; 4) maintenance and re-development of the International Seismograph Station Registry jointly with the National Earthquake Information Center operated by the US Geological Survey and in coordination with the Federation of Digital Seismograph Networks (FDSN); 5) maintenance and update of the International Association of Seismology and Physics of the Earth's Interior (IASPEI) Collection of Reference Events (GT0-5); 6) partial support for extension of the ISC-GEM Global Instrumental Earthquake Catalogue -- the most homogeneous global long-term catalog used for global and regional seismic hazard assessment; and 7) maintenance and extension of the ISC Event Bibliography, which allows for rapid literature searches pertaining to significant global seismic events.***