Version 1
: Received: 23 June 2023 / Approved: 26 June 2023 / Online: 26 June 2023 (14:52:50 CEST)
How to cite:
Selden, C.; Selden, C.; Norbu, R. Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin. Preprints2023, 2023061829. https://doi.org/10.20944/preprints202306.1829.v1
Selden, C.; Selden, C.; Norbu, R. Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin. Preprints 2023, 2023061829. https://doi.org/10.20944/preprints202306.1829.v1
Selden, C.; Selden, C.; Norbu, R. Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin. Preprints2023, 2023061829. https://doi.org/10.20944/preprints202306.1829.v1
APA Style
Selden, C., Selden, C., & Norbu, R. (2023). Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin. Preprints. https://doi.org/10.20944/preprints202306.1829.v1
Chicago/Turabian Style
Selden, C., Chimi Selden and Rinchen Norbu. 2023 "Enhancing the Glacial Lake Inventory in Bhutan through Semi-Automatic Techniques using Google Earth Engine and QGIS for the Phochhu Basin" Preprints. https://doi.org/10.20944/preprints202306.1829.v1
Abstract
Bhutan located in the Hindu Kush Himalayan (HKH) region consists of several glaciers and glacial lakes at higher elevations. With the rapid change in global temperature, glaciers are found to melt at an accelerated rate. This rapid melt of glaciers gets accumulated in weak moraine walls forming a glacial lake, posing a major threat to the downstream communities. As per the Bhutan Glacial Lake Inventory 2021, Bhutan has 567 glacial lakes. Furthermore, the Phochhu basin has the maximum glacial lakes (0.05%) and of which 9 are PDGL. Hence a need for a time monitoring system is imminent. With the availability of free High-resolution Satellite Imageries and Advanced Remote Sensing tools, it has been a sine qua no for monitoring glacial lakes in high areas. Therefore, using the Google Earth Engine and Qgis Platform a semi-automated technique was used to generate glacial lake inventories for Phochhu Sub-basin for the year 2021. We found out that there are 166 glacial lakes covering an area of 24.051 km2.
Keywords
Glacial Lake Inventory (Rapstreng, Thorthomi, and Luggye); Sentinel-2 MSI; Normalized difference water index; Semi-automatic delineation
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.
