Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C

12 pages, 6 figures, 1 table.-- Data will be made available on request

Detalles Bibliográficos
Autores: González-Vilanueva, Rita, Heredia, Sergio, Alejo, Irene, Villacieros-Robineau, Nicolás, Nombela, Miguel Ángel, Caballero, Isabel
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2026
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:dnet:digitalcsic_::89ac5a65420b9221ce783771b83c162d
Acceso en línea:http://hdl.handle.net/10261/432198
Access Level:acceso abierto
Palabra clave:Shallow bathymetry
Intertidal shellfish banks
Multi-temporal analysis
Uncertainty
Coastal morphodynamics
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spelling Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/CGonzález-Vilanueva, RitaHeredia, SergioAlejo, IreneVillacieros-Robineau, NicolásNombela, Miguel ÁngelCaballero, IsabelShallow bathymetryIntertidal shellfish banksMulti-temporal analysisUncertaintyCoastal morphodynamics12 pages, 6 figures, 1 table.-- Data will be made available on requestIntertidal environments exhibit shallow depths, low relief, and strong optical variability, which limit the use of conventional bathymetric surveys and complicate the interpretation of satellite-derived bathymetry (SDB). This study evaluates a multi-temporal SDB approach based on Sentinel-2A/B/C imagery in a bayhead delta characterized by extensive intertidal flats under mesotidal regime. To address the interpretation of apparent bathymetric variability in low-relief intertidal systems, we introduce the Intertidal Bathymetric Stability Index (IBSI), a dimensionless diagnostic that relates temporal variability in SDB to its validated uncertainty. The method is applied to three campaigns in 2025 using multi-scene compositing within restricted temporal windows. Validation against in situ bathymetric data shows that composite SDB products achieve median absolute errors of 0.51-0.58 m with negligible bias for depths up to ∼10 m, outperforming single-scene retrievals under variable optical conditions. IBSI values identify spatial contrasts in retrieval stability, separating shallow intertidal flats with consistent SDB estimates from river-influenced channels, vegetated areas, and the intertidal-subtidal transition, where variability exceeds method detectability. The proposed SDB-IBSI framework does not aim to detect bathymetric change directly. Instead, it defines where multi-temporal SDB can be interpreted within detection limits. This diagnostic approach supports process-based analysis, modelling, and monitoring design in shallow, turbid environmentsThis research was supported by Grant CNS2023-143630 funded by MICIU/AEI/10.13039/501100011033 and by European Union NextGeneration EU/PRTR. This work was also supported by MICIU/AEI/10.13039/501100011033 through the project ENVIROSUB (PID2023-153274NB-I00), MARISLAB (PR004A 2024/02, REDEMAR programme), funded by the Xunta de Galicia (30%) and the European Maritime, Fisheries and Aquaculture Fund (EMFAF) (70%). RGV is funded by the SANdy sediments modulation of coastal DIssolved Nutrients, Organic matter and coastal acidification (SANDINO) project (CSIC) and MARISLABPeer reviewedElsevierMinisterio de Ciencia, Innovación y Universidades (España)European CommissionXunta de GaliciaEuropean Maritime, Fisheries and Aquaculture FundConsejo Superior de Investigaciones Científicas (España)202620262026info:eu-repo/semantics/articlePublisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/432198reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI//PID2023-153274NB-I00https://doi.org/10.1016/j.coastaleng.2026.105043https://doi.org/10.1016/j.coastaleng.2026.105043Síinfo:eu-repo/semantics/openAccessoai:dnet:digitalcsic_::89ac5a65420b9221ce783771b83c162d2026-05-22T06:33:51Z
dc.title.none.fl_str_mv Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
title Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
spellingShingle Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
González-Vilanueva, Rita
Shallow bathymetry
Intertidal shellfish banks
Multi-temporal analysis
Uncertainty
Coastal morphodynamics
title_short Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
title_full Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
title_fullStr Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
title_full_unstemmed Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
title_sort Assessing the temporal stability of satellite-derived bathymetry in intertidal flats using Sentinel-2A/B/C
dc.creator.none.fl_str_mv González-Vilanueva, Rita
Heredia, Sergio
Alejo, Irene
Villacieros-Robineau, Nicolás
Nombela, Miguel Ángel
Caballero, Isabel
author González-Vilanueva, Rita
author_facet González-Vilanueva, Rita
Heredia, Sergio
Alejo, Irene
Villacieros-Robineau, Nicolás
Nombela, Miguel Ángel
Caballero, Isabel
author_role author
author2 Heredia, Sergio
Alejo, Irene
Villacieros-Robineau, Nicolás
Nombela, Miguel Ángel
Caballero, Isabel
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
European Commission
Xunta de Galicia
European Maritime, Fisheries and Aquaculture Fund
Consejo Superior de Investigaciones Científicas (España)
dc.subject.none.fl_str_mv Shallow bathymetry
Intertidal shellfish banks
Multi-temporal analysis
Uncertainty
Coastal morphodynamics
topic Shallow bathymetry
Intertidal shellfish banks
Multi-temporal analysis
Uncertainty
Coastal morphodynamics
description 12 pages, 6 figures, 1 table.-- Data will be made available on request
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
dc.type.none.fl_str_mv info:eu-repo/semantics/article
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/432198
url http://hdl.handle.net/10261/432198
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI//PID2023-153274NB-I00
https://doi.org/10.1016/j.coastaleng.2026.105043
https://doi.org/10.1016/j.coastaleng.2026.105043
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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