{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,12]],"date-time":"2026-02-12T17:10:09Z","timestamp":1770916209550,"version":"3.50.1"},"reference-count":42,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2019,11,24]],"date-time":"2019-11-24T00:00:00Z","timestamp":1574553600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>The 2019 Mw 7.5 New Ireland earthquake occurred at an equatorial area where the dense vegetation prevents remote sensing techniques such as C- or X-band interferometric synthetic aperture radar (SAR) from acquiring coherent phase measurements. Therefore, in this paper, multiple remote sensing techniques including the L-band interferometric SAR, the range and azimuth offset tracking of SAR intensities, and the offset tracking of optical images were employed to map its co-seismic deformation field and to determine the slip distribution. The surface rupture was clearly and consistently captured by all offset observations, with the ground fault trace striking at an angel of 315\u00b0 and extending over 10 km. An iterative weighting strategy based on the residual root mean square of inversions using individual datasets was developed to determine the relative weight of each dataset, allowing for the joint inversion of the fault geometry, the refinement of the dip angle, and the determination of the best fitting slip distribution. The resultant model indicates a nearly left-lateral strike-slip motion on the Weitin fault that ruptured to the surface with a maximum slip of 6.10 m, occurring at a depth of ~10 km, and a geodetic moment release of 1.03 \u00d7 1020 Nm, corresponding to a magnitude of Mw 7.31. The distribution of aftershocks shows about 70% of aftershocks were located in the area with increased Coulomb failure stress and few aftershocks in the subduction zone to the south of the Weitin fault were triggered by this event.<\/jats:p>","DOI":"10.3390\/rs11232767","type":"journal-article","created":{"date-parts":[[2019,11,25]],"date-time":"2019-11-25T03:10:00Z","timestamp":1574651400000},"page":"2767","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Coseismic Slip Distribution of the 2019 Mw 7.5 New Ireland Earthquake from the Integration of Multiple Remote Sensing Techniques"],"prefix":"10.3390","volume":"11","author":[{"given":"Chuang","family":"Song","sequence":"first","affiliation":[{"name":"School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9675-8814","authenticated-orcid":false,"given":"Chen","family":"Yu","sequence":"additional","affiliation":[{"name":"School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK"}]},{"given":"Zhenhong","family":"Li","sequence":"additional","affiliation":[{"name":"School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK"},{"name":"College of Geological Engineering and Geomatics, Chang\u2019an University, Xi\u2019an 710054, China"}]},{"given":"Yongsheng","family":"Li","sequence":"additional","affiliation":[{"name":"School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK"},{"name":"Institute of Crustal Dynamics, China Earthquake Administration, Beijing 100086, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3430-0672","authenticated-orcid":false,"given":"Ruya","family":"Xiao","sequence":"additional","affiliation":[{"name":"School of Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK"},{"name":"School of Earth Science and Engineering, Hohai University, Nanjing 211100, China"}]}],"member":"1968","published-online":{"date-parts":[[2019,11,24]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"66","DOI":"10.1016\/j.earscirev.2016.03.005","article-title":"Post 8 Ma reconstruction of Papua New Guinea and Solomon Islands: Microplate tectonics in a convergent plate boundary setting","volume":"156","author":"Holm","year":"2016","journal-title":"Earth-Sci. Rev."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2009GC002430","article-title":"Interactions between a transform fault and arc volcanism in the Bismarck Sea, Papua New Guinea","volume":"10","author":"Llanes","year":"2009","journal-title":"Geochem. Geophys. Geosyst."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"495","DOI":"10.1146\/annurev-earth-040809-152540","article-title":"Tectonics of the New Guinea Region","volume":"40","author":"Baldwin","year":"2012","journal-title":"Annu. Rev. Earth Planet. Sci."},{"key":"ref_4","unstructured":"(2019, June 30). USGS, Available online: https:\/\/earthquake.usgs.gov\/earthquakes\/eventpage\/us70003kyy\/executive."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"1103","DOI":"10.1111\/j.1365-246X.2005.02567.x","article-title":"Tectonic interpretation of aftershock relocations in eastern Papua New Guinea using teleseismic data and the arrival pattern method","volume":"160","author":"Tregoning","year":"2005","journal-title":"Geophys. J. Int."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2005GC000935","article-title":"Triggering of tsunamigenic aftershocks from large strike-slip earthquakes: Analysis of the November 2000 New Ireland earthquake sequence","volume":"6","author":"Geist","year":"2005","journal-title":"Geochem. Geophys. Geosyst."},{"key":"ref_7","first-page":"B03302.1","article-title":"Triggering of earthquakes during the 2000 Papua New Guinea earthquake sequence","volume":"112","author":"Park","year":"2007","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"7194","DOI":"10.1126\/science.aam7194","article-title":"Complex multifault rupture during the 2016 Mw 7.8 Kaik\u014dura earthquake, New Zealand","volume":"356","author":"Hamling","year":"2017","journal-title":"Science"},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"138","DOI":"10.1038\/364138a0","article-title":"The displacement field of the Landers earthquake mapped by radar interferometry","volume":"364","author":"Massonnet","year":"1993","journal-title":"Nature"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"749","DOI":"10.1038\/ngeo1562","article-title":"Evolution of Santorini Volcano dominated by episodic and rapid fluxes of melt from depth","volume":"5","author":"Parks","year":"2012","journal-title":"Nat. Geosci."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"264","DOI":"10.1109\/LGRS.2013.2255259","article-title":"Accuracy of incoherent speckle tracking for circular Gaussian signals","volume":"11","year":"2014","journal-title":"IEEE Geosci. Remote Sens. Lett."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"875","DOI":"10.1029\/1999GL900138","article-title":"Measuring ground displacements from SAR amplitude images: Application to the Landers earthquake","volume":"26","author":"Michel","year":"1999","journal-title":"Geophys. Res. Lett."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"3271","DOI":"10.1109\/JSTARS.2014.2387865","article-title":"Improved SAR amplitude image offset measurements for deriving three-dimensional coseismic displacements","volume":"8","author":"Wang","year":"2015","journal-title":"IEEE J. Sel. Top. Appl. Earth Obs. Remote Sens."},{"key":"ref_14","doi-asserted-by":"crossref","unstructured":"Darvishi, M., Schl\u00f6gel, R., Bruzzone, L., and Cuozzo, G. (2018). Integration of PSI, MAI, and Intensity-Based Sub-Pixel Offset Tracking Results for Landslide Monitoring with X-Band Corner Reflectors\u2014Italian Alps (Corvara). Remote Sens., 10.","DOI":"10.3390\/rs10030409"},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Hanssen, R.F. (2001). Radar Interferometry: Data Interpretation and Error Analysis, Springer Science & Business Media.","DOI":"10.1007\/0-306-47633-9"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1529","DOI":"10.1109\/TGRS.2006.888937","article-title":"Automatic and precise orthorectification, coregistration, and subpixel correlation of satellite images, application to ground deformation measurements","volume":"45","author":"Leprince","year":"2007","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_17","first-page":"129","article-title":"Evidence of supershear during the 2018 magnitude 7.5 Palu earthquake from space geodesy","volume":"12","author":"Socquet","year":"2019","journal-title":"Nat. Geosci."},{"key":"ref_18","doi-asserted-by":"crossref","unstructured":"Wang, S., Xu, C., Wen, Y., Yin, Z., Jiang, G., and Fang, L. (2017). Slip model for the 25 November 2016 Mw 6.6 Aketao earthquake, western China, revealed by Sentinel-1 and ALOS-2 observations. Remote Sens., 9.","DOI":"10.3390\/rs9040325"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"2396","DOI":"10.1002\/2017JB015168","article-title":"Transpressional rupture cascade of the 2016 Mw 7.8 Kaikoura earthquake, New Zealand","volume":"123","author":"Xu","year":"2018","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"1135","DOI":"10.1785\/BSSA0750041135","article-title":"Surface deformation due to shear and tensile faults in a half-space","volume":"75","author":"Okada","year":"1985","journal-title":"Bull. Seismol. Soc. Am."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"9","DOI":"10.1016\/j.rse.2011.05.028","article-title":"GMES Sentinel-1 mission","volume":"120","author":"Torres","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_22","unstructured":"(2019, June 30). ESA Sentinel Online. Available online: https:\/\/sentinel.esa.int\/web\/sentinel\/missions\/sentinel-2\/overview."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"25","DOI":"10.1016\/j.rse.2011.11.026","article-title":"Sentinel-2: ESA\u2019s optical high-resolution mission for GMES operational services","volume":"120","author":"Drusch","year":"2012","journal-title":"Remote Sens. Environ."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"3517","DOI":"10.1029\/1999GL010840","article-title":"Motion of the South Bismarck Plate, Papua New Guinea","volume":"26","author":"Tregoning","year":"1999","journal-title":"Geophys. Res. Lett."},{"key":"ref_25","unstructured":"Werner, C., Wegm\u00fcller, U., Strozzi, T., and Wiesmann, A. (2000, January 16\u201320). Gamma SAR and interferometric processing software. Proceedings of the 2000 ERS-Envisat Symposium, Gothenburg, Sweden."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"2220","DOI":"10.1109\/TGRS.2015.2497902","article-title":"Interferometric processing of Sentinel-1 TOPS data","volume":"54","author":"Gonzalez","year":"2016","journal-title":"IEEE Trans. Geosci. Remote Sens."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"1","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":"4774","DOI":"10.1002\/2017GL073560","article-title":"Finite-fault slip model of the 2016 Mw 7.5 Chilo\u00e9 earthquake, southern Chile, estimated from Sentinel-1 data","volume":"44","author":"Xu","year":"2017","journal-title":"Geophys. Res. Lett."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"4035","DOI":"10.1029\/1998GL900033","article-title":"Radar interferogram filtering for geophysical applications","volume":"25","author":"Goldstein","year":"1998","journal-title":"Geophys. Res. Lett."},{"key":"ref_30","doi-asserted-by":"crossref","first-page":"401","DOI":"10.1364\/JOSAA.17.000401","article-title":"Network approaches to two-dimensional phase unwrapping: Intractability and two new algorithms","volume":"17","author":"Chen","year":"2000","journal-title":"JOSA A"},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"1305","DOI":"10.1016\/j.procs.2016.09.246","article-title":"Sentinel-1 support in the GAMMA software","volume":"100","author":"Werner","year":"2016","journal-title":"Procedia Comput. Sci."},{"key":"ref_32","doi-asserted-by":"crossref","first-page":"123","DOI":"10.1007\/s11263-007-0052-1","article-title":"Nonlocal image and movie denoising","volume":"76","author":"Buades","year":"2008","journal-title":"Int. J. Comput. Vis."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"6655","DOI":"10.1002\/2015GL065385","article-title":"Line-of-sight displacement from ALOS-2 interferometry: Mw 7.8 Gorkha Earthquake and Mw 7.3 aftershock","volume":"42","author":"Lindsey","year":"2015","journal-title":"Geophys. Res. Lett."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1377","DOI":"10.1785\/0120000922","article-title":"Fault slip distribution of the 1999 M w 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_35","doi-asserted-by":"crossref","first-page":"650","DOI":"10.1093\/gji\/ggt254","article-title":"The 2011 MW 6.8 Burma earthquake: Fault constraints provided by multiple SAR techniques","volume":"195","author":"Feng","year":"2013","journal-title":"Geophys. J. Int."},{"key":"ref_36","first-page":"1189","article-title":"A novel hybrid PSO\/simplex algorithm for determining earthquake source parameters using InSAR observations","volume":"25","author":"Feng","year":"2010","journal-title":"Prog. Geophys."},{"key":"ref_37","doi-asserted-by":"crossref","first-page":"161","DOI":"10.1785\/0120000834","article-title":"Deformation during the 12 November 1999 Duzce, Turkey, earthquake, from GPS and InSAR data","volume":"92","author":"Burgmann","year":"2002","journal-title":"Bull. Seismol. Soc. Am."},{"key":"ref_38","doi-asserted-by":"crossref","first-page":"353","DOI":"10.1111\/j.1365-246X.2007.03713.x","article-title":"A non-linear geodetic data inversion using ABIC for slip distribution on a fault with an unknown dip angle","volume":"173","author":"Fukahata","year":"2008","journal-title":"Geophys. J. Int."},{"key":"ref_39","doi-asserted-by":"crossref","first-page":"B03305","DOI":"10.1029\/2003JB002607","article-title":"Stress triggering in thrust and subduction earthquakes and stress interaction between the southern San Andreas and nearby thrust and strike-slip faults","volume":"109","author":"Lin","year":"2004","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_40","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1029\/2004JB003415","article-title":"Forecasting the evolution of seismicity in southern California: Animations built on earthquake stress transfer","volume":"110","author":"Toda","year":"2005","journal-title":"J. Geophys. Res. Solid Earth"},{"key":"ref_41","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/j.tecto.2009.09.019","article-title":"Applying the Coulomb failure function with an optimally oriented plane to the 2008 Mw 7.9 Wenchuan earthquake triggering","volume":"491","author":"Xu","year":"2010","journal-title":"Tectonophysics"},{"key":"ref_42","doi-asserted-by":"crossref","unstructured":"Yu, C., Li, Z., Chen, J., and Hu, J.-C. (2018). Small magnitude co-seismic deformation of the 2017 Mw 6.4 Nyingchi earthquake revealed by InSAR measurements with atmospheric correction. Remote Sens., 10.","DOI":"10.3390\/rs10050684"}],"container-title":["Remote Sensing"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2072-4292\/11\/23\/2767\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T13:37:07Z","timestamp":1760189827000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2072-4292\/11\/23\/2767"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,11,24]]},"references-count":42,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2019,12]]}},"alternative-id":["rs11232767"],"URL":"https:\/\/doi.org\/10.3390\/rs11232767","relation":{},"ISSN":["2072-4292"],"issn-type":[{"value":"2072-4292","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,11,24]]}}}