Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean

The coastal marine gravity field is not well modelled due to poor data coverage. Recent satellite altimeters provide reliable altimetry observations near the coast, filling the gaps between the open ocean and land. We show the potential of recent satellite altimetry for the coastal marine gravity mo...

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Autores principales: Abulaitijiang Adili, Andersen Ole Baltazar, Barzaghi Riccardo, Knudsen Per
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Lenguaje:EN
Publicado: Sciendo 2021
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Acceso en línea:https://doaj.org/article/7a34d18380c249b5afddda2ff8fb27f6
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spelling oai:doaj.org-article:7a34d18380c249b5afddda2ff8fb27f62021-12-05T14:10:52ZCoastal marine gravity modelling from satellite altimetry – case study in the Mediterranean2081-994310.1515/jogs-2020-0200https://doaj.org/article/7a34d18380c249b5afddda2ff8fb27f62021-07-01T00:00:00Zhttps://doi.org/10.1515/jogs-2020-0200https://doaj.org/toc/2081-9943The coastal marine gravity field is not well modelled due to poor data coverage. Recent satellite altimeters provide reliable altimetry observations near the coast, filling the gaps between the open ocean and land. We show the potential of recent satellite altimetry for the coastal marine gravity modelling using the least squares collocation technique. Gravity prediction error near the coast is better than 4 mGal. The modelled gravity anomalies are validated with sparse shipborne gravimetric measurements. We obtained 4.86 mGal precision when using the altimetry data with the best coastal coverage and retracked with narrow primary peak retracker. The predicted gravity field is an enhancement to EGM2008 over the coastal regions. The potential improvement in alti- metric marine gravity will be beneficial for the next generation of EGM development.Abulaitijiang AdiliAndersen Ole BaltazarBarzaghi RiccardoKnudsen PerSciendoarticlecoastal marine gravityleast squares collocationsatellite altimetryGeodesyQB275-343ENJournal of Geodetic Science, Vol 11, Iss 1, Pp 29-37 (2021)
institution DOAJ
collection DOAJ
language EN
topic coastal marine gravity
least squares collocation
satellite altimetry
Geodesy
QB275-343
spellingShingle coastal marine gravity
least squares collocation
satellite altimetry
Geodesy
QB275-343
Abulaitijiang Adili
Andersen Ole Baltazar
Barzaghi Riccardo
Knudsen Per
Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
description The coastal marine gravity field is not well modelled due to poor data coverage. Recent satellite altimeters provide reliable altimetry observations near the coast, filling the gaps between the open ocean and land. We show the potential of recent satellite altimetry for the coastal marine gravity modelling using the least squares collocation technique. Gravity prediction error near the coast is better than 4 mGal. The modelled gravity anomalies are validated with sparse shipborne gravimetric measurements. We obtained 4.86 mGal precision when using the altimetry data with the best coastal coverage and retracked with narrow primary peak retracker. The predicted gravity field is an enhancement to EGM2008 over the coastal regions. The potential improvement in alti- metric marine gravity will be beneficial for the next generation of EGM development.
format article
author Abulaitijiang Adili
Andersen Ole Baltazar
Barzaghi Riccardo
Knudsen Per
author_facet Abulaitijiang Adili
Andersen Ole Baltazar
Barzaghi Riccardo
Knudsen Per
author_sort Abulaitijiang Adili
title Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
title_short Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
title_full Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
title_fullStr Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
title_full_unstemmed Coastal marine gravity modelling from satellite altimetry – case study in the Mediterranean
title_sort coastal marine gravity modelling from satellite altimetry – case study in the mediterranean
publisher Sciendo
publishDate 2021
url https://doaj.org/article/7a34d18380c249b5afddda2ff8fb27f6
work_keys_str_mv AT abulaitijiangadili coastalmarinegravitymodellingfromsatellitealtimetrycasestudyinthemediterranean
AT andersenolebaltazar coastalmarinegravitymodellingfromsatellitealtimetrycasestudyinthemediterranean
AT barzaghiriccardo coastalmarinegravitymodellingfromsatellitealtimetrycasestudyinthemediterranean
AT knudsenper coastalmarinegravitymodellingfromsatellitealtimetrycasestudyinthemediterranean
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