Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018
Data provided are monthly surface water layers extracted from Sentinel1A SAR data for 3 districts in India (Shivamogga, Sindhudurg, Wayanad) for the year 2017 and 2018. Surface water body layers were mapped using an average monthly threshold value extracted from the image backscatter histogram. The average threshold value excluded the monsoon months due to the difference in water and not water area. The threshold value was slightly lesser than the mean threshold value. The end product was validated using field data which resulted in user and producer accuracies. Monthly surface water body layers were not produced for a few months due to the non-availability of Sentinel 1 data. The work was supported by MRC, AHRC, BBSRC, ESRC and NERC [grant number MR/P024335/1] and NERC - SUNRISE project [grant number NE/R000131/1] Full details about this dataset can be found at https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
dataset
https://data-package.ceh.ac.uk/sd/3c23fea1-5b27-4b01-b9ef-fc13346cfedc.zip
name: Supporting information
description: Supporting information available to assist in re-use of this dataset
function: information
https://catalogue.ceh.ac.uk/datastore/eidchub/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
name: Download the data
description: Download a copy of this data
function: fileAccess
https://catalogue.ceh.ac.uk/id/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
doi:
eng
imageryBaseMapsEarthCover
73.21
76.47
16.67
11.38
2017-01-01
2018-12-31
publication
2022-02-15
Maps were generated using Sentinel1A GRD data pre-processed to backscatter images using the SNAP software. Surface water is identified by applying a water/non-water threshold on the SAR backscatter images. The resulting maps were validated against in situ reference data to produce a measure of class user’s and producer’s accuracy.
publication
2010-12-08
TIFF
If you reuse this data, you should cite: Uday, N.G., Purse, B., Vanak, A.T., Samrat, A., Chaudhary, A., Gerard, F. (2022). Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018. NERC EDS Environmental Information Data Centre https://doi.org/10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
author
author
author
author
author
author
pointOfContact
custodian
publisher
owner
owner
Lancaster Environment Centre, Library Avenue, Bailrigg
Lancaster
LA1 4AP
UK
name: EIDC website
description: The Environmental Information Data Centre (EIDC) is the UK's national data centre for terrestrial and freshwater sciences.
function: information
pointOfContact
2025-06-03T07:41:51