Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region
The Kumaun Himalaya is considered as the most active part of the Central Seismic gap in the Indian Sub-continent. In this paper, we presented active surface deformation rates of the Kumaun region from February 2017 to February 2021 using the Persistent Scatterer Interferometric Synthetic Aperture Ra...
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Taylor & Francis Group
2024-01-01
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| Series: | Geocarto International |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/10106049.2024.2302415 |
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| author | Girish Ch. Kothyari Rakesh K. Dumka Khayingshing Luirei Raj Sunil Kandregula Ajay Kumar Taloor Kapil Malik Achla Joshi Atul K. Patidar Uday Bhan |
| author_facet | Girish Ch. Kothyari Rakesh K. Dumka Khayingshing Luirei Raj Sunil Kandregula Ajay Kumar Taloor Kapil Malik Achla Joshi Atul K. Patidar Uday Bhan |
| author_sort | Girish Ch. Kothyari |
| collection | DOAJ |
| description | The Kumaun Himalaya is considered as the most active part of the Central Seismic gap in the Indian Sub-continent. In this paper, we presented active surface deformation rates of the Kumaun region from February 2017 to February 2021 using the Persistent Scatterer Interferometric Synthetic Aperture Radar (PSI) technique. The cumulative displacement that occurred during the span of 4 years is ±55 mm, whereas the Line of Sight (LOS) deformation velocity rate ranges is ±7 mm/yr. Apart from PSI, we also estimated the b-value of the Kumaun region from 1803 to 2021 (399 events) and its value is 0.54 ± 0.03. A distinct NE-SW trend of b-value is observed where earthquakes with M > 6 occurred towards NE of this trend. The PSI-derived deformation reveals that the central part of the Inner Lesser Himalaya along with the Main Central Thrust (MCT) zone is dominated by uplift. The zone between the Munsiari Thrust (MT) and MCT in the central region shows the maximum uplift ranging 5–7 mm/yr which exactly lies above the mid-crustal ramp of the Main Himalayan Thrust (MHT). Our results are well corroborated with available observations of geodetic strain and peak ground acceleration values. However, the deformation patterns and high-velocity rates in the central part of the study area between MT and MCT indicate the accumulation of high stress. |
| format | Article |
| id | doaj-art-e96d555aab504750b2581e1083e42715 |
| institution | OA Journals |
| issn | 1010-6049 1752-0762 |
| language | English |
| publishDate | 2024-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Geocarto International |
| spelling | doaj-art-e96d555aab504750b2581e1083e427152025-08-20T02:38:26ZengTaylor & Francis GroupGeocarto International1010-60491752-07622024-01-0139110.1080/10106049.2024.2302415Estimation of active surface deformation using PSInSAR technique of the Central Himalayan regionGirish Ch. Kothyari0Rakesh K. Dumka1Khayingshing Luirei2Raj Sunil Kandregula3Ajay Kumar Taloor4Kapil Malik5Achla Joshi6Atul K. Patidar7Uday Bhan8Department of Petroleum Engineering and Earth Science, University of Petroleum and Energy Studies, Dehradun, IndiaInstitute of Seismological Research, Gandhinagar, Gujarat, IndiaWadia Institute of Himalayan Geology, Dehradun, Uttarakhand, IndiaCSIR, National Geophysical Research Institute, Hyderabad, Telangana, IndiaDepartment of Remote Sensing and GIS, University of Jammu, Jammu, IndiaIIT, Indian School of Mines, Dhanbad, IndiaDepartment of Petroleum Engineering and Earth Science, University of Petroleum and Energy Studies, Dehradun, IndiaDepartment of Petroleum Engineering and Earth Science, University of Petroleum and Energy Studies, Dehradun, IndiaDepartment of Petroleum Engineering and Earth Science, University of Petroleum and Energy Studies, Dehradun, IndiaThe Kumaun Himalaya is considered as the most active part of the Central Seismic gap in the Indian Sub-continent. In this paper, we presented active surface deformation rates of the Kumaun region from February 2017 to February 2021 using the Persistent Scatterer Interferometric Synthetic Aperture Radar (PSI) technique. The cumulative displacement that occurred during the span of 4 years is ±55 mm, whereas the Line of Sight (LOS) deformation velocity rate ranges is ±7 mm/yr. Apart from PSI, we also estimated the b-value of the Kumaun region from 1803 to 2021 (399 events) and its value is 0.54 ± 0.03. A distinct NE-SW trend of b-value is observed where earthquakes with M > 6 occurred towards NE of this trend. The PSI-derived deformation reveals that the central part of the Inner Lesser Himalaya along with the Main Central Thrust (MCT) zone is dominated by uplift. The zone between the Munsiari Thrust (MT) and MCT in the central region shows the maximum uplift ranging 5–7 mm/yr which exactly lies above the mid-crustal ramp of the Main Himalayan Thrust (MHT). Our results are well corroborated with available observations of geodetic strain and peak ground acceleration values. However, the deformation patterns and high-velocity rates in the central part of the study area between MT and MCT indicate the accumulation of high stress.https://www.tandfonline.com/doi/10.1080/10106049.2024.2302415DeformationPSInSARKumaun HimalayaUttarakhandIndia |
| spellingShingle | Girish Ch. Kothyari Rakesh K. Dumka Khayingshing Luirei Raj Sunil Kandregula Ajay Kumar Taloor Kapil Malik Achla Joshi Atul K. Patidar Uday Bhan Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region Geocarto International Deformation PSInSAR Kumaun Himalaya Uttarakhand India |
| title | Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region |
| title_full | Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region |
| title_fullStr | Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region |
| title_full_unstemmed | Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region |
| title_short | Estimation of active surface deformation using PSInSAR technique of the Central Himalayan region |
| title_sort | estimation of active surface deformation using psinsar technique of the central himalayan region |
| topic | Deformation PSInSAR Kumaun Himalaya Uttarakhand India |
| url | https://www.tandfonline.com/doi/10.1080/10106049.2024.2302415 |
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