Facility Support: The Global CMT Project

GSTDTAP

项目编号	1639131
	Facility Support: The Global CMT Project
	Goran Ekstrom
主持机构	Columbia University
项目开始年	2016
	2016-08-01
项目结束日期	2019-07-31
资助机构	US-NSF
项目类别	Continuing grant
项目经费	117548(USD)
国家	美国
语种	英语
英文摘要	This award supports the Global Centroid-Moment-Tensor (CMT) Project, which provides analysis of global earthquake activity and a consistent, high-quality catalog of earthquake source parameters, the Global CMT Catalog. The objective of the Global CMT Project is to provide the best and most comprehensive record of global seismic strain release available. The basic earthquake parameters determined in a CMT analysis represent primary observations of the earthquake source process and provide valuable constraints for modeling and interpretation of global and regional tectonic activity. The CMT parameters allow description and prediction of global ground motion due to an earthquake. The CMT Catalog is the standard data base used in regional seismicity and tectonic studies, and the results are used in studies of stress changes and deformation due to earthquakes, as well as for research into complex and unusual seismic events, and for analyses of seismic hazard in the US and elsewhere. Educators at several levels integrate products from the CMT Project in a variety of activities. The CMT Project's current operational goal is to analyze all earthquakes with magnitudes greater than or equal to 5.0 occurring anywhere in the world. The results are disseminated via the project web site as well as by the IRIS Data Management Center and the International Seismological Centre; rapid analyses are also disseminated by email. The work supported by this award involves five main activities: (1) Systematic determination, with a three-month delay, of moment tensors for earthquakes of magnitude 5.0 and larger globally, and archiving of the results in the CMT catalog; (2) Rapid determination of moment tensors for earthquakes of magnitude 5.5 and larger globally and quick dissemination of the results; (3) Curation of the CMT catalog and continued improvements of the distribution mechanisms for this data base; (4) Routine detection and location of seismic sources using surface waves and distribution of a catalog of detected events; (5) Investigations of the quality of seismic waveforms from the Global Seismographic Network (GSN) and other seismic networks. This award will also support incorporation of an updated model of surface-wave dispersion in the CMT analysis and the development of a standard method for distributing earthquake detections obtained from surface-wave analysis.
来源学科分类	Geosciences - Earth Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/69945
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Goran Ekstrom.Facility Support: The Global CMT Project.2016.