Satellite derived bathymetry (sbd) of inaccessible water: an application of log-transformed band ratio model

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dc.contributor.authorNag, Kamal
dc.date.accessioned2026-01-14T11:43:12Z
dc.date.available2026-01-14T11:43:12Z
dc.date.issued2025-06-30
dc.description.abstractThe present study applied log transformed Band Ratio Model (BRM) on Sentinel-2A image of Copernicus programme of European Space Agency (ESA) to derive shallow water bathymetric map in a part of Indian eastern coast. The “empirical bathymetry processor” in SNAP software of ESA has been used for this purpose. General Bathymetric Chart of the Ocean (GEBCO)_2020 of Nippon Foundation has been taken as a reference image for point data input. Log transformed ratio of band-2 and ban-3 of Sentinel-2A at 10 m spatial resolution enables bathymetric mapping of nearshore water. Before applying BRM, image processing involves land mask, sun glint correction and dark object subtraction (DOS). This approach can be used as an alternative to conventional hydrographic survey for bathymetric mapping in inaccessible water with great savings of cost and time. en
dc.formatapplication/pdf
dc.identifier.citationActa Geographica Debrecina Landscape & Environment series, Vol. 19 No. 1 (2025) , 29-40
dc.identifier.doihttps://doi.org/10.21120/LE/19/1/3
dc.identifier.eissn1789-7556
dc.identifier.issn1789-4921
dc.identifier.issue1
dc.identifier.jatitleLandsc. environ.
dc.identifier.jtitleActa Geographica Debrecina Landscape & Environment series
dc.identifier.urihttps://hdl.handle.net/2437/402047
dc.identifier.volume19
dc.languageen
dc.relationhttps://ojs.lib.unideb.hu/landsenv/article/view/14299
dc.rights.accessOpen Access
dc.rights.ownerKamal Nag
dc.subjectSentinel-2Aen
dc.subjectBand Ratio Model (BRM)en
dc.subjectSNAP softwareen
dc.subjectGEBCO_2020en
dc.subjectbathymetric mappingen
dc.subjectinaccessible wateren
dc.titleSatellite derived bathymetry (sbd) of inaccessible water: an application of log-transformed band ratio modelen
dc.typefolyóiratcikkhu
dc.typearticleen
dc.type.detailedidegen nyelvű folyóiratközlemény hazai lapbanhu
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Acta Geographica Debrecina Landscape & Environment (DE-journals)