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Westoby, M.; Berthier, E.

High-resolution (2 metre) digital elevation models of landscape affected by the Chamoli ice-debris flow, India, February 2021

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This dataset is available under the terms of the Open Government Licence

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https://doi.org/10.5285/5a1eaef4-9211-4227-a017-d20b08be5784
These data are digital elevation models which describe landscape topography. The data were created to support analysis of landscape change following the 7th February 2021 avalanche-debris flow in Chamoli District, Uttarakhand, India. The data were used as standalone datasets to support this analysis, but also supported numerical modelling using CAESAR-Lisflood (see data collection). The DEMs were created from CNES/Airbus Pléiades-HR stereo satellite imagery captured in along-track mode. They are a geospatial dataset created in raster (.tif) format. They are most commonly imported into GIS software, where they can be analysed or support other forms of geospatial analysis.
Publication date: 2023-10-25
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More information

View numbers valid from 25 October 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

Formats

TIFF, PNG

Spatial information

Study area
Spatial representation type
Raster
Spatial reference system
WGS 84

Temporal information

Temporal extent
2021-02-10    to    2022-04-02

Provenance & quality

The DEMs were created from CNES/Airbus Pléiades-HR stereo satellite imagery captured in along-track mode on the dates provided in section 1.4 of the supporting documentation. To generate new DEMs at 2 m grid resolution we used a block matching algorithm implemented in the open-source NASA Ames Stereo Pipeline (version v2.6.2_post). We registered the new DEMs to an existing composite DEM dated to September 2015 using the demcoreg toolbox. We also clipped and re-aligned an existing post-event DEM dated 10 February 2021 to the same September 2015 DEM.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:
Westoby, M.; Berthier, E. (2023). High-resolution (2 metre) digital elevation models of landscape affected by the Chamoli ice-debris flow, India, February 2021. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/5a1eaef4-9211-4227-a017-d20b08be5784

Correspondence/contact details

Westoby, M.
Northumbria University
 matt.westoby@plymouth.ac.uk

Authors

Westoby, M.
Northumbria University
Berthier, E.
Laboratory of Space Geophysical and Oceanographic Studies (LEGOS)

Other contacts

Rights holder
Northumbria University
Custodian
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk
Publisher
NERC EDS Environmental Information Data Centre
 info@eidc.ac.uk

Additional metadata

Topic categories
elevation
Keywords
digital elevation model , GIS , Himalaya , remote sensing
Funding
Natural Environment Research Council
Last updated
05 March 2024 08:55