Facility Support: The Global CMT Project

0824694 Ekstrom本提案寻求资金以继续质心-矩-张量(CMT)项目。该设施代表了25年来对全球地震活动和震源机制的编目、分析和维护数据的努力。全球全面的地震应变缓解记录得到维护，并通过CMT项目提供。编目始于1976年，最初的目标是分析所有大于或等于5.0级地震的矩、张量和质心位置。目前，数据在发生后一天内分发。目前正在申请资金，以维持和升级到更好和更现代的信息传播方法。通过CMT分析，可以对全球和区域构造活动及其相关过程进行建模、解释、约束和更好地理解。层析成像研究也受益于CMT分析。总体而言，确定了五项具体活动，1)确定并存档覆盖全球的5.0级以上地震的矩张量，2)快速识别和确定5.5级地震的矩张量并迅速传播结果，3)管理和维护CMT目录并改进以更有效地分发数据，4)从面波进行震源事件检测并对数据进行编目/分发，以及5)从GSN和其他地震台网确定波形质量。私人助理每人要求一个月的工资，并为两名半职研究助理寻求资金。PIS将维护和监测软件、数据采集协议和数据工作流程，并监督研究助理。CMT数据存档和重大地震事件的快速CMT结果得到了整个社区的高度认可。CMT震级估计是分布式的，并被认为是权威的？由美国地质调查局提供。该目录被认为是标准的，本地化的地震研究依赖于这些数据作为起点。CMT数据被需要创建合成地震图的层析摄影者广泛使用。CMT数据除了用于研究外，还被广泛应用于教育目的。

0824694EkstromThis proposal seeks funding to continue the Centroid-Moment-Tensor (CMT) Project. This facility represents a 25-year-long endeavor to catalog, analyze, and maintain data on global earthquake activity and focal mechanisms. Global, comprehensive seismic strain relief records are maintained and made available through the CMT project. The cataloging began in 1976 with the initial goal of analyzing moment tensor and centroid location for all earthquakes with a magnitude greater or equal to 5.0. Currently, data are distributed within one day of occurrence. Current funding is solicited to maintain and upgrade to better and more modern methods of information dissemination. Global and regional tectonic activity and associated processes can be modeled, interpreted, constrained, and better understood thought CMT analysis. Tomographic research also benefits from CMT analysis. Overall, five specific activities are identified, 1) determine and archive moment tensors for greater than magnitude 5.0 earthquakes with global coverage, 2) rapidly identify and determine moment tensors for earthquakes with M5.5 and quickly disseminate results, 3) curate and maintain the CMT catalog and develop improvements to distribute data more effectively, 4) event detection for seismic sources from surface waves and cataloging/distributing the data, and 5) determining waveform quality from the GSN and other seismic networks. The PIs each request one month salary and funding is sought for two half-time research assistants. PIs will maintain and monitor software, data acquisition protocols and data workflow and supervise research assistants. The CMT data archive and rapid CMT results from major seismic events have been highly recognized throughout the community. CMT magnitude estimates are distributed and considered ?authoritative? by the USGS. The catalog is considered the standard and localized earthquake studies rely on these data as a starting point. CMT data is widely used by tomographers needing to create synthetic seismograms. CMT data, besides uses in research, is widely applied for educational purposes.***