NERC Data Catalogue Service
Radar derived seasonal surface water maps for three Indian districts (Shivamogga, Sindhudurg, Wayanad), 2017-2018
[This dataset is embargoed until December 31, 2022]. 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
Default
Identification info
- Metadata Language
- English (en)
- Character set
- utf8
- Dataset Reference Date ()
- 2022-02-15
- Identifier
- doi: / 10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
- Other citation details
- 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 10.5285/3c23fea1-5b27-4b01-b9ef-fc13346cfedc
- GEMET - INSPIRE themes, version 1.0 ()
-
- Land Cover
- Keywords
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- Sentinel 1
- SAR
- monthly
- seasonal
- surface water
- water body
- flooding
- hydrology
- land cover
- Remote Sensing
- Limitations on Public Access
- otherRestrictions
- Other constraints
- no limitations
- Use constraints
- otherRestrictions
- Use constraints
- otherRestrictions
- Other constraints
- 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
- Spatial representation type
- grid
- Distance
- 10 urn:ogc:def:uom:EPSG::9001
- Topic category
-
- Imagery base maps earth cover
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- Begin date
- 2017-01-01
- End date
- 2018-12-31
- Code
- WGS 84
Distribution Information
- Data format
-
-
TIFF
()
-
TIFF
()
- Quality Scope
- dataset
- Other
- dataset
Report
- Dataset Reference Date ()
- 2010-12-08
- Statement
-
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.
Metadata
- File identifier
- 3c23fea1-5b27-4b01-b9ef-fc13346cfedc XML
- Metadata Language
- English (en)
- Character set
- ISO/IEC 8859-1 (also known as Latin 1)
- Resource type
- dataset
- Hierarchy level name
- dataset
- Metadata Date
- 2022-02-16T09:57:09
- Metadata standard name
- UK GEMINI
- Metadata standard version
- 2.3
Overviews
Publishing Body
