Version 1
: Received: 28 February 2023 / Approved: 28 February 2023 / Online: 28 February 2023 (02:54:37 CET)
How to cite:
Pinakana, S.D.; Prakash, S. Understanding the Ground Vertical Displacement of Joshimath through Insar Data Processing. Preprints2023, 2023020496. https://doi.org/10.20944/preprints202302.0496.v1
Pinakana, S.D.; Prakash, S. Understanding the Ground Vertical Displacement of Joshimath through Insar Data Processing. Preprints 2023, 2023020496. https://doi.org/10.20944/preprints202302.0496.v1
Pinakana, S.D.; Prakash, S. Understanding the Ground Vertical Displacement of Joshimath through Insar Data Processing. Preprints2023, 2023020496. https://doi.org/10.20944/preprints202302.0496.v1
APA Style
Pinakana, S.D., & Prakash, S. (2023). Understanding the Ground Vertical Displacement of Joshimath through Insar Data Processing. Preprints. https://doi.org/10.20944/preprints202302.0496.v1
Chicago/Turabian Style
Pinakana, S.D. and Satya Prakash. 2023 "Understanding the Ground Vertical Displacement of Joshimath through Insar Data Processing" Preprints. https://doi.org/10.20944/preprints202302.0496.v1
Abstract
The holy town of Joshimath, gateway to the India-China border and religious places like Badrinath, Hemkunt Sahab, Valley of flowers in the Uttarakhand state of India experienced cracks in many of the residential and commercial buildings in the month of November-December 2022 which created panic and relocation of people. The reason(s) for the subsidence is still not known but using the InSAR technology and data from Sentinel-1, SAR data for the region was processed using HyP3 and MintPy for January-December 2022 to understand when the phenomenon started and how much uplift/subsidence the area has underwent in the last one year, as no such study is available till today. The entire town can be classified into two zones with respect to the annual subsidence values. Severe subsidence has been observed in the North and East regions whereas most of the southern region experienced moderate to low subsidence. Since the town is built on the debris of an old landslide, the subsidence may be attributed to the change in the course of the underground water channels due to heavy and continuous construction happening in the region and also due to drop in the water table. The results shows that the subsidence in the region was ongoing since June (from January till May, almost negligible vertical movement was recorded) which accelerated after September (when an uplift was recorded which lasted till October), while the subsidence peaked in the month of December with recorded subsidence of as much as 10 cm in some areas located around the Joshimath town, where most of the residential and commercial buildings are located.
Keywords
Joshimath; InSAR; HyP3; MintPY
Subject
Environmental and Earth Sciences, Geography
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
