Changes in the flood plains and water quality along the Himalayan rivers after the Chamoli disaster of 7 February 2021

S.R. Meena, Kushanav Bhuyan, Akshansha Chauhan, Ramesh P. Singh

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The Himalayan regions are vulnerable to all kinds of natural hazards. On 7 February 2021, a deadly disaster occurred near the Tapovan, in Uttarakhand, Himalayas. During the event, large volume of debris along with broken glacial fragments flooded the Rishi Ganga River and washed away the nearby hydropower plants (Rishi Ganga and Tapovan), which was revealed from detailed analysis of multi spectral and bi-temporal satellite data. We present the impact of the Chamoli disaster on the flood plains and water quality of Himalayan rivers, Rishi Ganga near Tapovan, Alaknanda near Srinagar and Ganga near Haridwar and Bijnor. We used four locations along four sections of Himalayan rivers and have analysed various indices, modified normalized difference water index, normalized difference chlorophyll index, and normalized difference turbidity index, to study the changes in water quality and flood plains. On comparison of the spectral and backscattering coefficients derived from Sentinel-2 optical and Sentinel-1 synthetic aperture radar data, changes in the water quality and flood plains of the rivers were found.
Original languageEnglish
Pages (from-to)6984-7001
Number of pages18
JournalInternational journal of remote sensing
Volume42
Issue number18
Early online date17 Aug 2021
DOIs
Publication statusPublished - 2021

Keywords

  • ITC-ISI-JOURNAL-ARTICLE
  • ITC-HYBRID

Fingerprint

Dive into the research topics of 'Changes in the flood plains and water quality along the Himalayan rivers after the Chamoli disaster of 7 February 2021'. Together they form a unique fingerprint.

Cite this