A holistic seismotectonic model of Delhi region

Abstract Delhi region in northern India experiences frequent shaking due to both far-field and near-field earthquakes from the Himalayan and local sources, respectively. The recent M3.5 and M3.4 earthquakes of 12th April 2020 and 10th May 2020 respectively in northeast Delhi and M4.4 earthquake of 2...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Brijesh K. Bansal, Kapil Mohan, Mithila Verma, Anup K. Sutar
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ce68bc384ad54cbf96a9e62df799e530
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:ce68bc384ad54cbf96a9e62df799e530
record_format	dspace
spelling	oai:doaj.org-article:ce68bc384ad54cbf96a9e62df799e5302021-12-02T15:23:07ZA holistic seismotectonic model of Delhi region10.1038/s41598-021-93291-92045-2322https://doaj.org/article/ce68bc384ad54cbf96a9e62df799e5302021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93291-9https://doaj.org/toc/2045-2322Abstract Delhi region in northern India experiences frequent shaking due to both far-field and near-field earthquakes from the Himalayan and local sources, respectively. The recent M3.5 and M3.4 earthquakes of 12th April 2020 and 10th May 2020 respectively in northeast Delhi and M4.4 earthquake of 29th May 2020 near Rohtak (~ 50 km west of Delhi), followed by more than a dozen aftershocks, created panic in this densely populated habitat. The past seismic history and the current activity emphasize the need to revisit the subsurface structural setting and its association with the seismicity of the region. Fault plane solutions are determined using data collected from a dense network in Delhi region. The strain energy released in the last two decades is also estimated to understand the subsurface structural environment. Based on fault plane solutions, together with information obtained from strain energy estimates and the available geophysical and geological studies, it is inferred that the Delhi region is sitting on two contrasting structural environments: reverse faulting in the west and normal faulting in the east, separated by the NE-SW trending Delhi Hardwar Ridge/Mahendragarh-Dehradun Fault (DHR-MDF). The WNW-ESE trending Delhi Sargoda Ridge (DSR), which intersects DHR-MDF in the west, is inferred as a thrust fault. The transfer of stress from the interaction zone of DHR-MDF and DSR to nearby smaller faults could further contribute to the scattered shallow seismicity in Delhi region.Brijesh K. BansalKapil MohanMithila VermaAnup K. SutarNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Brijesh K. Bansal Kapil Mohan Mithila Verma Anup K. Sutar A holistic seismotectonic model of Delhi region
description	Abstract Delhi region in northern India experiences frequent shaking due to both far-field and near-field earthquakes from the Himalayan and local sources, respectively. The recent M3.5 and M3.4 earthquakes of 12th April 2020 and 10th May 2020 respectively in northeast Delhi and M4.4 earthquake of 29th May 2020 near Rohtak (~ 50 km west of Delhi), followed by more than a dozen aftershocks, created panic in this densely populated habitat. The past seismic history and the current activity emphasize the need to revisit the subsurface structural setting and its association with the seismicity of the region. Fault plane solutions are determined using data collected from a dense network in Delhi region. The strain energy released in the last two decades is also estimated to understand the subsurface structural environment. Based on fault plane solutions, together with information obtained from strain energy estimates and the available geophysical and geological studies, it is inferred that the Delhi region is sitting on two contrasting structural environments: reverse faulting in the west and normal faulting in the east, separated by the NE-SW trending Delhi Hardwar Ridge/Mahendragarh-Dehradun Fault (DHR-MDF). The WNW-ESE trending Delhi Sargoda Ridge (DSR), which intersects DHR-MDF in the west, is inferred as a thrust fault. The transfer of stress from the interaction zone of DHR-MDF and DSR to nearby smaller faults could further contribute to the scattered shallow seismicity in Delhi region.
format	article
author	Brijesh K. Bansal Kapil Mohan Mithila Verma Anup K. Sutar
author_facet	Brijesh K. Bansal Kapil Mohan Mithila Verma Anup K. Sutar
author_sort	Brijesh K. Bansal
title	A holistic seismotectonic model of Delhi region
title_short	A holistic seismotectonic model of Delhi region
title_full	A holistic seismotectonic model of Delhi region
title_fullStr	A holistic seismotectonic model of Delhi region
title_full_unstemmed	A holistic seismotectonic model of Delhi region
title_sort	holistic seismotectonic model of delhi region
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/ce68bc384ad54cbf96a9e62df799e530
work_keys_str_mv	AT brijeshkbansal aholisticseismotectonicmodelofdelhiregion AT kapilmohan aholisticseismotectonicmodelofdelhiregion AT mithilaverma aholisticseismotectonicmodelofdelhiregion AT anupksutar aholisticseismotectonicmodelofdelhiregion AT brijeshkbansal holisticseismotectonicmodelofdelhiregion AT kapilmohan holisticseismotectonicmodelofdelhiregion AT mithilaverma holisticseismotectonicmodelofdelhiregion AT anupksutar holisticseismotectonicmodelofdelhiregion
_version_	1718387354085883904

A holistic seismotectonic model of Delhi region

Ejemplares similares