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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Main Authors:	Abulaitijiang Adili, Andersen Ole Baltazar, Barzaghi Riccardo, Knudsen Per
Format:	article
Language:	EN
Published:	Sciendo 2021
Subjects:	coastal marine gravity least squares collocation satellite altimetry Geodesy QB275-343
Online Access:	https://doaj.org/article/7a34d18380c249b5afddda2ff8fb27f6
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id	oai: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
_version_	1718371648051085312

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

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