Study of Subsidence and Earthquake Swarms in the Western Pakistan.
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| Title: | Study of Subsidence and Earthquake Swarms in the Western Pakistan. |
|---|---|
| Authors: | Jingqiu Huang1 hjingqiu@gmail.com, Khan, Shuhab D.1 sdkhan@uh.edu, Ghulam, Abduwasit2 ghulam@eas.slu.edu, Crupa, Wanda1 wandacrupa@yahoo.com, Abir, Ismail A.1 ismailcyfc@gmail.com, Khan, Abdul S.3 asalamk_cem@yahoo.com, Kakar, Din M.4 dinkakar@yahoo.co.uk, Kasi, Aimal3 aimal_kasi@yahoo.co.uk, Kakar, Najeebullah3 najeebullahkakar991@gmail.com |
| Source: | Remote Sensing. Nov2016, Vol. 8 Issue 11, p956. 17p. |
| Subjects: | Strike-slip faults (Geology), Seismic reflection method data processing, Earthquake intensity, Synthetic aperture radar |
| Geographic Terms: | Quetta (Pakistan) |
| Abstract: | In recent years, the Quetta Valley and surrounding areas have experienced unprecedented levels of subsidence, which has been attributed mainly to groundwater withdrawal. However, this region is also tectonically active and is home to several regional strike-slip faults, including the north-south striking left-lateral Chaman Fault System. Several large earthquakes have occurred recently in this area, including one deadly Mw 6.4 earthquake that struck on 28 October 2008. This study integrated Interferometric Synthetic Aperture Radar (InSAR) results with GPS, gravity, seismic reflection profiles, and earthquake centroid-moment-tensor (CMT) data to identify the impact of tectonic and anthropogenic processes on subsidence and earthquake patterns in this region. To detect and map the spatial-temporal features of the processes that led to the surface deformation, this study used two Synthetic Aperture Radar (SAR) time series, i.e., 15 Phased Array L-band Synthetic Aperture Radar (PALSAR) images acquired by an Advanced Land Observing Satellite (ALOS) from 2006-2011 and 40 Environmental Satellite (ENVISAT) Advanced Synthetic Aperture Radar (ASAR) images spanning 2003-2010. A Small Baseline Subset (SBAS) technique was used to investigate surface deformation. Five seismic lines totaling ~60 km, acquired in 2003, were used to map the blind thrust faults beneath a Quaternary alluvium layer. The median filtered SBAS-InSAR average velocity profile supports groundwater withdrawal as the dominant source of subsidence, with some contribution from tectonic subsidence in the Quetta Valley. Results of SBAS-InSAR multi-temporal analysis provide a better explanation for the pre-, co-, and post-seismic displacement pattern caused by the 2008 earthquake swarms across two strike-slip faults. [ABSTRACT FROM AUTHOR] |
| Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 119798548 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Study of Subsidence and Earthquake Swarms in the Western Pakistan. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jingqiu+Huang%22">Jingqiu Huang</searchLink><relatesTo>1</relatesTo><i> hjingqiu@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Khan%2C+Shuhab+D%2E%22">Khan, Shuhab D.</searchLink><relatesTo>1</relatesTo><i> sdkhan@uh.edu</i><br /><searchLink fieldCode="AR" term="%22Ghulam%2C+Abduwasit%22">Ghulam, Abduwasit</searchLink><relatesTo>2</relatesTo><i> ghulam@eas.slu.edu</i><br /><searchLink fieldCode="AR" term="%22Crupa%2C+Wanda%22">Crupa, Wanda</searchLink><relatesTo>1</relatesTo><i> wandacrupa@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Abir%2C+Ismail+A%2E%22">Abir, Ismail A.</searchLink><relatesTo>1</relatesTo><i> ismailcyfc@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Khan%2C+Abdul+S%2E%22">Khan, Abdul S.</searchLink><relatesTo>3</relatesTo><i> asalamk_cem@yahoo.com</i><br /><searchLink fieldCode="AR" term="%22Kakar%2C+Din+M%2E%22">Kakar, Din M.</searchLink><relatesTo>4</relatesTo><i> dinkakar@yahoo.co.uk</i><br /><searchLink fieldCode="AR" term="%22Kasi%2C+Aimal%22">Kasi, Aimal</searchLink><relatesTo>3</relatesTo><i> aimal_kasi@yahoo.co.uk</i><br /><searchLink fieldCode="AR" term="%22Kakar%2C+Najeebullah%22">Kakar, Najeebullah</searchLink><relatesTo>3</relatesTo><i> najeebullahkakar991@gmail.com</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Remote+Sensing%22">Remote Sensing</searchLink>. Nov2016, Vol. 8 Issue 11, p956. 17p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Strike-slip+faults+%28Geology%29%22">Strike-slip faults (Geology)</searchLink><br /><searchLink fieldCode="DE" term="%22Seismic+reflection+method+data+processing%22">Seismic reflection method data processing</searchLink><br /><searchLink fieldCode="DE" term="%22Earthquake+intensity%22">Earthquake intensity</searchLink><br /><searchLink fieldCode="DE" term="%22Synthetic+aperture+radar%22">Synthetic aperture radar</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Quetta+%28Pakistan%29%22">Quetta (Pakistan)</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In recent years, the Quetta Valley and surrounding areas have experienced unprecedented levels of subsidence, which has been attributed mainly to groundwater withdrawal. However, this region is also tectonically active and is home to several regional strike-slip faults, including the north-south striking left-lateral Chaman Fault System. Several large earthquakes have occurred recently in this area, including one deadly Mw 6.4 earthquake that struck on 28 October 2008. This study integrated Interferometric Synthetic Aperture Radar (InSAR) results with GPS, gravity, seismic reflection profiles, and earthquake centroid-moment-tensor (CMT) data to identify the impact of tectonic and anthropogenic processes on subsidence and earthquake patterns in this region. To detect and map the spatial-temporal features of the processes that led to the surface deformation, this study used two Synthetic Aperture Radar (SAR) time series, i.e., 15 Phased Array L-band Synthetic Aperture Radar (PALSAR) images acquired by an Advanced Land Observing Satellite (ALOS) from 2006-2011 and 40 Environmental Satellite (ENVISAT) Advanced Synthetic Aperture Radar (ASAR) images spanning 2003-2010. A Small Baseline Subset (SBAS) technique was used to investigate surface deformation. Five seismic lines totaling ~60 km, acquired in 2003, were used to map the blind thrust faults beneath a Quaternary alluvium layer. The median filtered SBAS-InSAR average velocity profile supports groundwater withdrawal as the dominant source of subsidence, with some contribution from tectonic subsidence in the Quetta Valley. Results of SBAS-InSAR multi-temporal analysis provide a better explanation for the pre-, co-, and post-seismic displacement pattern caused by the 2008 earthquake swarms across two strike-slip faults. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Remote Sensing is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3390/rs8110956 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 17 StartPage: 956 Subjects: – SubjectFull: Strike-slip faults (Geology) Type: general – SubjectFull: Seismic reflection method data processing Type: general – SubjectFull: Earthquake intensity Type: general – SubjectFull: Synthetic aperture radar Type: general – SubjectFull: Quetta (Pakistan) Type: general Titles: – TitleFull: Study of Subsidence and Earthquake Swarms in the Western Pakistan. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jingqiu Huang – PersonEntity: Name: NameFull: Khan, Shuhab D. – PersonEntity: Name: NameFull: Ghulam, Abduwasit – PersonEntity: Name: NameFull: Crupa, Wanda – PersonEntity: Name: NameFull: Abir, Ismail A. – PersonEntity: Name: NameFull: Khan, Abdul S. – PersonEntity: Name: NameFull: Kakar, Din M. – PersonEntity: Name: NameFull: Kasi, Aimal – PersonEntity: Name: NameFull: Kakar, Najeebullah IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: Nov2016 Type: published Y: 2016 Identifiers: – Type: issn-print Value: 20724292 Numbering: – Type: volume Value: 8 – Type: issue Value: 11 Titles: – TitleFull: Remote Sensing Type: main |
| ResultId | 1 |
