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High-resolution (2 metre) digital elevation models of difference showing surface change following the Chamoli ice-debris flow, India, February 2021

These data are digital elevation models (DEMs) of difference (DoD). They are a geospatial dataset created in raster (.tif) format and quantify vertical (z) topographic change between two dates. 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 also supported numerical modelling using CAESAR-Lisflood (see related data https://catalogue.ceh.ac.uk/documents/7023cb77-c797-475e-872c-6f1e2b63dcc1 ). 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/f5394eaa-5ccb-4cf7-9ee4-c057c35b8517

Simple

Date (Publication)
2023-12-15
Identifier
https://catalogue.ceh.ac.uk/id/f5394eaa-5ccb-4cf7-9ee4-c057c35b8517
Identifier
doi: / 10.5285/f5394eaa-5ccb-4cf7-9ee4-c057c35b8517
Other citation details
Westoby, M. (2023). High-resolution (2 metre) digital elevation models of difference showing surface change following the Chamoli ice-debris flow, India, February 2021. NERC EDS Environmental Information Data Centre 10.5285/f5394eaa-5ccb-4cf7-9ee4-c057c35b8517
Author
  Northumbria University - Westoby, M.
https://orcid.org/0000-0002-2070-5580
Custodian
  NERC EDS Environmental Information Data Centre
Publisher
  NERC EDS Environmental Information Data Centre
Point of contact
  Northumbria University - Westoby, M.
https://orcid.org/0000-0002-2070-5580
Owner
  Northumbria University
Access constraints
otherRestrictions Other restrictions
Other constraints
no limitations
Use constraints
otherRestrictions Other restrictions
Other constraints
This resource is available under the terms of the Open Government Licence
Use constraints
otherRestrictions Other restrictions
Other constraints
If you reuse this data, you should cite: Westoby, M. (2023). High-resolution (2 metre) digital elevation models of difference showing surface change following the Chamoli ice-debris flow, India, February 2021. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/f5394eaa-5ccb-4cf7-9ee4-c057c35b8517
Spatial representation type
grid Grid
Distance
2  urn:ogc:def:uom:EPSG::9001
Metadata language
EnglishEnglish
Character set
utf8 UTF8
Topic category
  • Elevation
Begin date
2021-02-01
End date
2022-01-01
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Unique resource identifier
WGS 84
Distribution format
  • TIFF ()

  • Shapefile ()

Distributor
  NERC EDS Environmental Information Data Centre
OnLine resource
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Supporting information

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Hierarchy level
dataset Dataset
Other
dataset

Conformance result

Date (Publication)
2010-12-08
Statement
The DEMs from which these DoDs were created are available in the related data collection. The DoDs were created in QGIS software (versions 3.18 and 3.24) using the Raster Calculator tool. For a given DEM pair, the later DEM was subtracted from the earlier DEM to create a DoD. In this way, minus values show surface lowering (e.g. erosion), and positive values show surface gain (e.g. deposition). Where holes/data gaps existed in the input DEMs, these are reproduced in the subsequent DoD. (These holes occur where photogrammetric reconstruction failed due to poor key-point or tie-point extraction due to cloud cover, topographic occlusion, or because of a large offset between the view angle of the two satellite image acquisitions, for example).
File identifier
f5394eaa-5ccb-4cf7-9ee4-c057c35b8517 XML
Metadata language
EnglishEnglish
Character set
ISO/IEC 8859-1 (also known as Latin 1) 8859 Part 1
Hierarchy level
dataset Dataset
Hierarchy level name
dataset
Date stamp
2025-11-13T16:21:32
Metadata standard name
UK GEMINI
Metadata standard version
2.3
Point of contact
  NERC EDS Environmental Information Data Centre
Lancaster Environment Centre, Library Avenue, Bailrigg , Lancaster , LA1 4AP , UK
https://eidc.ac.uk/
 
 

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