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A Geodetic Strain Rate and Tectonic Velocity Model for China

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dc.contributor.authorRui, X.en
dc.contributor.authorStamps, D. Sarahen
dc.contributor.departmentGeosciencesen
dc.date.accessioned2019-08-29T19:32:29Zen
dc.date.available2019-08-29T19:32:29Zen
dc.date.issued2019-03en
dc.description.abstractThe conjoining and interfering influence of the Circum-Pacific zone and the Tethys-Himalayan zone make China a country of intense intracontinental seismicity. Here we provide three new quantitatively assessed products and use them to better constrain seismic hazards in China. First, we process similar to 2,700 Global Positioning System (GPS) data spanning 1996-2017 provided by the Crustal Movement Observation Network of China (CMONOC) network and the Nevada Geodetic Laboratory. To produce a robust tectonic velocity solution, we implement a data editing scheme to account for 8Mw >= 7 earthquakes to reduce the influence of transient phenomena. The solution is then rotated into a consistent reference frame with 10 other published velocity sources surrounding mainland China. Second, we calculate a new geodetic strain rate model using an optimal mesh grid definition of 0.4 degrees x0.4 degrees determined jointly by the Nyquist frequency method and checkerboard tests. We evaluate and validate the geodetic strain rate results from both a statistical (i.e., based on the Bayesian factor) and quantitative (i.e., based on the comparison with the 2-D analytical strain rate result) approaches. Third, we use our new geodetic strain rate model to estimate seismicity rates.en
dc.description.notesAll velocity data supporting the conclusions of this paper are available as supporting information in GLOBK velocity format. NGL data with dois are referenced in the References section. We also provide the strain rate model and seismicity model as supporting information. We thank the Crustal Movement Observation Network of China and Hubei Earthquake Bureau for providing access to their data for publication in this manuscript. Rui Xu was funded by National Science Foundation of China 41704014 and supported by the science and technology innovation fund of Sichuan Earthquake Agency (201804). We thank Corne Kreemer and Peter Bird for insightful discussions about the strain rate and SHIFT codes.en
dc.description.sponsorshipNational Science Foundation of China [41704014]; science and technology innovation fund of Sichuan Earthquake Agency [201804]en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1029/2018GC007806en
dc.identifier.issn1525-2027en
dc.identifier.issue3en
dc.identifier.urihttp://hdl.handle.net/10919/93308en
dc.identifier.volume20en
dc.language.isoenen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectgeodetic strain rate modelen
dc.subjecttectonic velocity solutionen
dc.subjectevaluationen
dc.subjectseismic hazardsen
dc.subjectchinaen
dc.titleA Geodetic Strain Rate and Tectonic Velocity Model for Chinaen
dc.title.serialGeochemistry Geophysics Geosystemsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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