{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:06:16Z","timestamp":1760148376599,"version":"build-2065373602"},"reference-count":44,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2023,4,25]],"date-time":"2023-04-25T00:00:00Z","timestamp":1682380800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["No. 42174023"],"award-info":[{"award-number":["No. 42174023"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>Spatiotemporal distribution of early afterslip is essential for seismic hazard evaluation and determination of fault friction properties. In this study, we used early post-seismic COSMO-SkyMed (19 February 2014\u201308 April 2014) and long-term Sentinel-1 (16 October 2014\u201317 June 2020) observations from multiple platforms over different periods to create a rate decay model driven by post-seismic afterslip. The combined observations provide full coverage of the post-seismic deformation following the 2014 Yutian Mw 6.9 earthquake that occurred at the southwestern end of the Altyn Tagh Fault. The observation and modeling results showed that post-seismic deformation was characterized by left-lateral strike-slip movement with minor normal slip, which was consistent with that of co-seismic rupture. The maximum early afterslip (7\u201355 days) was as large as approximately 0.09 m with a depth of 7 km in the west of co-seismic rupture, and the maximum long-term afterslip was about 0.24 m. The simulated post-seismic deformation caused by poroelastic rebound and viscoelastic relaxation suggests that the afterslip mechanism controls the post-seismic deformation. The coupling pattern of the aftershock and afterslip indicates that the aftershock was mainly caused by the afterslip. The post-seismic spatiotemporal features of the 2014 Yutian earthquake have significant implications for analyzing seismic hazards at the southwestern end of the Altyn Tagh Fault.<\/jats:p>","DOI":"10.3390\/rs15092258","type":"journal-article","created":{"date-parts":[[2023,4,25]],"date-time":"2023-04-25T01:37:01Z","timestamp":1682386621000},"page":"2258","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Spatiotemporal Distribution of Afterslip following the 2014 Yutian Mw 6.9 Earthquake Using COSMO-SkyMed and Sentinel-1 InSAR Data"],"prefix":"10.3390","volume":"15","author":[{"given":"Zhanhong","family":"Huang","sequence":"first","affiliation":[{"name":"School of Geosciences and Info-Physics, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Xie","sequence":"additional","affiliation":[{"name":"School of Geosciences and Info-Physics, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lei","family":"Zhao","sequence":"additional","affiliation":[{"name":"School of Geosciences and Info-Physics, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7294-8229","authenticated-orcid":false,"given":"Wenbin","family":"Xu","sequence":"additional","affiliation":[{"name":"School of Geosciences and Info-Physics, Central South University, Changsha 410083, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,25]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"419","DOI":"10.1126\/science.189.4201.419","article-title":"Cenozoic Tectonics of Asia: Effects of a Continental Collision: Features of recent continental tectonics in Asia can be interpreted as results of the India-Eurasia collision","volume":"189","author":"Molnar","year":"1975","journal-title":"Science"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1130\/GES00217.1","article-title":"Active structures of the Himalayan-Tibetan orogen and their relationships to earthquake distribution, contemporary strain field, and Cenozoic volcanism","volume":"5","author":"Taylor","year":"2009","journal-title":"Geosphere"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"356","DOI":"10.1360\/03yd9032","article-title":"Basic characteristics of active tectonics of China","volume":"46","author":"Deng","year":"2003","journal-title":"Sci. China Ser. D-Earth Sci."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"13","DOI":"10.1360\/03dz0002","article-title":"Active Blocks and Strong Earthquake in the continent of China","volume":"46","author":"Zhang","year":"2003","journal-title":"Sci. China Ser. D-Earth Sci."},{"key":"ref_5","first-page":"1607","article-title":"Active faults, earthquake hazards and associated geodynamic processes in continental China","volume":"43","author":"Zhang","year":"2013","journal-title":"Sci. Sin. Terr."},{"key":"ref_6","first-page":"180","article-title":"Seismogenic Structure and Surface Rupture Characteristics of the of the 2014 Ms 7.3 Yutian Earthquake","volume":"89","author":"Li","year":"2015","journal-title":"Acta Geol. Sin."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.tecto.2012.08.007","article-title":"Normal- and oblique-slip of the 2008 Yutian earthquake: Evidence for eastward block motion, northern Tibetan Plateau","volume":"584","author":"Xu","year":"2013","journal-title":"Tectonophysics"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"249","DOI":"10.1016\/j.tecto.2016.11.009","article-title":"Probing Coulomb stress triggering effects for a Mw > 6.0 earthquake sequence from 1997 to 2014 along the periphery of the Bayan Har block on the Tibetan Plateau","volume":"694","author":"Wang","year":"2017","journal-title":"Tectonophysics"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"e2021GL094125","DOI":"10.1029\/2021GL094125","article-title":"Stress transfer in the western boundary of Bayan Har Block in Tibet Plateau from the 2008 to 2020 Yutian Earthquake sequence in China","volume":"48","author":"Jia","year":"2021","journal-title":"Geophys. Res. Lett."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"503","DOI":"10.1111\/j.1365-246X.2010.04754.x","article-title":"Extension on the Tibetan plateau: Recent normal faulting measured by InSAR and body wave seismology","volume":"183","author":"Elliott","year":"2010","journal-title":"Geophys. J. Int."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"125","DOI":"10.1016\/j.tecto.2011.09.003","article-title":"The 2008 Yutian normal faulting earthquake (Mw 7.1), NW Tibet: Non-planar fault modeling and implications for the Karakax Fault","volume":"511","author":"Furuya","year":"2011","journal-title":"Tectonophysics"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"935","DOI":"10.1016\/j.jseaes.2010.05.011","article-title":"Source characteristics of the Yutian earthquake in 2008 from inversion of the coseismic deformation field mapped by InSAR","volume":"40","author":"Shan","year":"2011","journal-title":"J. Asian Earth Sci."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"e2020EA001409","DOI":"10.1029\/2020EA001409","article-title":"Slip Model of the 2020 Yutian (Northwestern Tibetan Plateau) Earthquake Derived From Joint Inversion of InSAR and Teleseismic Data","volume":"8","author":"Li","year":"2021","journal-title":"Earth Space Sci."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"He, P., Wen, Y., Ding, K., and Xu, C. (2020). Normal Faulting in the 2020 Mw 6.2 Yutian Event: Implications for Ongoing E\u2013W Thinning in Northern Tibet. Remote Sens., 12.","DOI":"10.3390\/rs12183012"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"1563","DOI":"10.1007\/s00024-021-02735-w","article-title":"Normal Faulting Movement During the 2020 Mw 6.4 Yutian Earthquake: A Shallow Rupture in NW Tibet Revealed by Geodetic Measurements","volume":"178","author":"Yu","year":"2021","journal-title":"Pure Appl. Geophys."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"127","DOI":"10.1007\/s11430-020-9673-6","article-title":"Detailed mapping of the surface rupture of the 12 February 2014 Yutian Ms 7.3 earthquake, Altyn Tagh fault, Xinjiang, China","volume":"64","author":"Yuan","year":"2021","journal-title":"Sci. China Earth Sci."},{"key":"ref_17","first-page":"159","article-title":"Fast inversion for the rupture process of the 12 February 2014 Yutian Mw 6.9 earthquake: Discussion on the impacts of focal mechanisms on rupture process inversions","volume":"36","author":"Zhang","year":"2014","journal-title":"Acta Seismol. Sin."},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"581","DOI":"10.1785\/0120160099","article-title":"Stepover Rupture of the 2014 Mw 7.0 Yutian, Xinjiang, Earthquake","volume":"107","author":"Zhang","year":"2017","journal-title":"Bull. Seismol. Soc. Am."},{"key":"ref_19","first-page":"4817","article-title":"Coseismic displacement and dislocation inversion of 2014 Yutian Ms 7.3 earthquake in Xinjiang","volume":"61","author":"Liang","year":"2018","journal-title":"Chin. J. Geophys."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"3161","DOI":"10.1785\/0220190361","article-title":"Source Model of the 2014 Mw 6.9 Yutian Earthquake at the Southwestern End of the Altyn Tagh Fault in Tibet Estimated from Satellite Images","volume":"91","author":"Li","year":"2020","journal-title":"Seismol. Res. Lett."},{"key":"ref_21","first-page":"48","article-title":"Seismogenic fault and aftershock characteristics for the 2014 Ms 7.3 Yutian earthquake, Xinjiang","volume":"43","author":"Luo","year":"2021","journal-title":"Acta Geol. Sin."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"204","DOI":"10.1126\/science.183.4121.204","article-title":"Postseismic Viscoelastic Rebound","volume":"183","author":"Nur","year":"1974","journal-title":"Science"},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"B02304","DOI":"10.1029\/2003JB002488","article-title":"Postseismic relaxation driven by brittle creep: A possible mechanism to reconcile geodetic measurements and the decay rate of aftershocks, application to the Chi-Chi earthquake, Taiwan","volume":"109","author":"Perfettini","year":"2004","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1038\/nature01776","article-title":"Post-earthquake ground movements correlated to pore-pressure transients","volume":"424","author":"Segall","year":"2003","journal-title":"Nature"},{"key":"ref_25","first-page":"802","article-title":"Relocation of the 2014 Ms 7.3 earthquake sequence in Yutian, Xinjiang","volume":"58","author":"Fang","year":"2015","journal-title":"Chin. J. Geophys."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"e2019JB018774","DOI":"10.1029\/2019JB018774","article-title":"Present-Day Crustal Deformation of Continental China Derived From GPS and Its Tectonic Implications","volume":"125","author":"Wang","year":"2020","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"RG2004","DOI":"10.1029\/2005RG000183","article-title":"The Shuttle Radar Topography Mission","volume":"45","author":"Farr","year":"2007","journal-title":"Rev. Geophys."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"1709","DOI":"10.1109\/TGRS.2002.802453","article-title":"Phase unwrapping for large SAR interferograms: Statistical segmentation and generalized network models","volume":"40","author":"Chen","year":"2002","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"5952","DOI":"10.1002\/2015JB011886","article-title":"Mitigation of atmospheric phase delays in InSAR data, with application to the eastern California shear zone","volume":"120","author":"Tymofyeyeva","year":"2015","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"761","DOI":"10.1002\/2017JB014620","article-title":"Observations and Modeling of Coseismic and Postseismic Deformation Due To the 2015 Mw7.8 Gorkha (Nepal) Earthquake","volume":"123","author":"Wang","year":"2018","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.geog.2021.09.007","article-title":"Review of the SBAS InSAR Time-series algorithms, applications, and challenges","volume":"13","author":"Li","year":"2022","journal-title":"Geod. Geodyn."},{"key":"ref_32","doi-asserted-by":"crossref","unstructured":"Morishita, Y., Lazecky, M., Wright, T.J., Weiss, J.R., Elliott, J.R., and Hooper, A. (2020). LiCSBAS: An open-source InSAR time series analysis package integrated with the LiCSAR automated Sentinel-1 InSAR processor. Remote Sens., 12.","DOI":"10.3390\/rs12030424"},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"e2020JB021314","DOI":"10.1029\/2020JB021314","article-title":"Relaxation of Tibetan Lower Crust and Afterslip Driven by the 2001 Mw 7.8 Kokoxili, China, Earthquake Constrained by a Decade of Geodetic Measurements","volume":"126","author":"Zhao","year":"2021","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_34","first-page":"1997","article-title":"Coulomb stress interaction among strong earthquakes around the Bayan Har block since the Manyi earthquake in 1997","volume":"54","author":"Cheng","year":"2011","journal-title":"Chin. J. Geophys."},{"key":"ref_35","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1007\/s11430-009-0028-9","article-title":"Study the the viscosity of lower crust of Qinghai-Tibet Plateau according to postseismic deformation","volume":"52","author":"Zhang","year":"2009","journal-title":"Sci. China Ser. D-Earth Sci."},{"key":"ref_36","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1016\/j.cageo.2005.08.006","article-title":"PSGRN\/PSCMP\u2014A new code for calculating co-and post-seismic deformation, geoid and gravity changes based on the viscoelastic-gravitational dislocation theory","volume":"32","author":"Wang","year":"2006","journal-title":"Comput. Geosci."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"1377","DOI":"10.1785\/0120000922","article-title":"Fault slip distribution of the 1999 Mw 7.1 Hector Mine, California, earthquake, estimated from satellite radar and GPS measurements","volume":"92","author":"Zebker","year":"2002","journal-title":"Bull. Seismol. Soc. Am."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"12034","DOI":"10.1029\/2019JB017953","article-title":"Logarithmic Model Joint Inversion Method for Coseismic and Postseismic Slip: Application to the 2017 Mw 7.3 Sarpol Zah\u0101b Earthquake, Iran","volume":"124","author":"Liu","year":"2019","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_39","first-page":"2126","article-title":"Relocation of the 2014 Yutian, Xinjiang, Ms 7.3 earthquake sequence and a preliminary study of its seismogenic structure","volume":"59","author":"Tang","year":"2016","journal-title":"Chin. J. Geophys."},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"e2022GL099952","DOI":"10.1029\/2022GL099952","article-title":"Afterslip from the 2020 M 6.5 Monte Cristo Range, Nevada Earthquake","volume":"49","author":"Braunmiller","year":"2022","journal-title":"Geophys. Res. Lett."},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"5352","DOI":"10.1029\/2018GL078196","article-title":"Afterslip Enhanced Aftershock Activity During the 2017 Earthquake Sequence Near Sulphur Peak, Idaho","volume":"45","author":"Koper","year":"2018","journal-title":"Geophys. Res. Lett."},{"key":"ref_42","doi-asserted-by":"crossref","first-page":"e2021JB023897","DOI":"10.1029\/2021JB023897","article-title":"Afterslip Moment Scaling and Variability From a Global Compilation of Estimates","volume":"127","author":"Churchill","year":"2022","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_43","first-page":"96","article-title":"Ramp-flat basement structures of the Zagros Mountains inferred from co-seismic slip and afterslip of the 2017 Mw 7.3 Darbandikhan, Iran\/Iraq earthquake. Earth Planet","volume":"496","author":"Barnhart","year":"2018","journal-title":"Sci. Lett."},{"key":"ref_44","doi-asserted-by":"crossref","first-page":"411","DOI":"10.1016\/j.gr.2015.03.008","article-title":"First tectonic-geomorphology study along the Longmu\u2013Gozha Co fault system, Western Tibet","volume":"41","author":"Chevalier","year":"2017","journal-title":"Gondwana Res."}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/9\/2258\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T19:22:48Z","timestamp":1760124168000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/15\/9\/2258"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,4,25]]},"references-count":44,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2023,5]]}},"alternative-id":["rs15092258"],"URL":"https:\/\/doi.org\/10.3390\/rs15092258","relation":{},"ISSN":["2072-4292"],"issn-type":[{"type":"electronic","value":"2072-4292"}],"subject":[],"published":{"date-parts":[[2023,4,25]]}}}