5a1eaef4-9211-4227-a017-d20b08be5784 English ISO/IEC 8859-1 (also known as Latin 1) dataset dataset NERC EDS Environmental Information Data Centre Lancaster Environment Centre, Library Avenue, Bailrigg Lancaster LA1 4AP UK info@eidc.ac.uk https://eidc.ac.uk/ EIDC website The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences. information pointOfContact 2025-11-19T15:05:54 UK GEMINI 2.3 WGS 84 High-resolution (2 metre) digital elevation models of landscape affected by the Chamoli ice-debris flow, India, February 2021 2023-10-25 publication https://catalogue.ceh.ac.uk/id/5a1eaef4-9211-4227-a017-d20b08be5784 10.5285/5a1eaef4-9211-4227-a017-d20b08be5784 doi: 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 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. Full details about this dataset can be found at https://doi.org/10.5285/5a1eaef4-9211-4227-a017-d20b08be5784 Westoby, M. Northumbria University matt.westoby@plymouth.ac.uk https://orcid.org/0000-0002-2070-5580 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Berthier, E. Laboratory of Space Geophysical and Oceanographic Studies (LEGOS) etienne.berthier@univ-tlse3.fr https://orcid.org/0000-0001-5978-9155 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information author Westoby, M. Northumbria University matt.westoby@plymouth.ac.uk https://orcid.org/0000-0002-2070-5580 ORCID record ORCID is an open, non-profit, community-driven effort to create and maintain a registry of unique researcher identifiers and a transparent method of linking research activities and outputs to these identifiers. information pointOfContact NERC EDS Environmental Information Data Centre info@eidc.ac.uk custodian NERC EDS Environmental Information Data Centre info@eidc.ac.uk publisher Northumbria University EMAIL NOT PROVIDED owner remote sensing GEMET - Concepts, version 4.1.3 2019-01-28 creation Himalaya digital elevation model GIS otherRestrictions no limitations otherRestrictions This resource is available under the terms of the Open Government Licence otherRestrictions If you reuse this data, you should cite: 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 grid 2 English utf8 elevation 2021-02-10 2022-04-02 79.471 79.764 30.471 30.595 TIFF PNG NERC EDS Environmental Information Data Centre info@eidc.ac.uk distributor https://catalogue.ceh.ac.uk/datastore/eidchub/5a1eaef4-9211-4227-a017-d20b08be5784 Download the data Download a copy of this data fileAccess https://data-package.ceh.ac.uk/sd/5a1eaef4-9211-4227-a017-d20b08be5784.zip Supporting information Supporting information available to assist in re-use of this dataset information dataset dataset Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services 2010-12-08 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.