Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach
The mass distribution in the system Earth changes dynamically over time. Time-variable mass transport mainly arises from the interplay between the terrestrial hydrological water cycle, the ocean and atmosphere, and the Earth’s cryosphere. To understand the dynamics of the system Earth and its climat...
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Universitäts- und Landesbibliothek Bonn
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ftunivbonn:oai:bonndoc.ulb.uni-bonn.de:20.500.11811/5832 2023-05-15T14:15:08+02:00 Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach Rietbroek, Roelof Kusche, Jürgen Ilk, Karl-Heinz 2014-04-07 application/pdf https://hdl.handle.net/20.500.11811/5832 eng eng Universitäts- und Landesbibliothek Bonn info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:5n-35460 https://hdl.handle.net/20.500.11811/5832 In Copyright http://rightsstatements.org/vocab/InC/1.0/ openAccess Kombination Inversion GRACE Altmetrie Gravimetrie GPS Deformation Massentransporte Ozeanmodell Cryosphäre Grönland Antarktis Meeresspiegel sterisch SNREI GIA Geozentrum OBP Bodendruck Joint inversion gravimetry altimetry surface loading sea level ocean bottom pressure geocenter cryosphere steric ice sheet ocean model mass transport ddc:550 doc-type:doctoralThesis 2014 ftunivbonn https://doi.org/20.500.11811/5832 2023-02-13T19:26:34Z The mass distribution in the system Earth changes dynamically over time. Time-variable mass transport mainly arises from the interplay between the terrestrial hydrological water cycle, the ocean and atmosphere, and the Earth’s cryosphere. To understand the dynamics of the system Earth and its climate, it is of paramount importance to establish and maintain an accurate observational basis of these surface processes, against which models and theories can be tested. A variety of observational techniques are used today. The time-variable gravity is measured from space by the Gravity Recovery and Climate Experiment (GRACE), Earth deformation processes are monitored by a permanent global network of GPS stations, and sea surface changes are detected by a family of satellite altimeters. The underlying motivation of this work is that the combination of the different observation types allows the mitigation of some of the technique-specific limitations. In the framework of this dissertation, several types of geodetic observations have been combined in a least-squares sense to estimate present-day changes of surface mass storage in the Earth system, using dynamically consistent surface loading theory. Two types of inversion schemes have been designed and implemented. In the first scheme, time variable gravity from GRACE, deformations of a permanent GPS station network, and simulated ocean bottom pressure changes from an ocean model, are used to estimate weekly surface loading changes covering the entire globe. In the second inversion scheme, (inter-)annual changes of the Earth’s cryosphere, ocean and terrestrial water cycle, are parameterized by a predefined set of standing waves, whose time variations are estimated by combining GRACE gravimetry with satellite altimetry from Jason-1 and Jason-2. Ein kombinierter Ansatz zur Bestimmung von Meeresspiegelschwankungen und Auflastsveränderungen aus geodätischen Beobachtungen und Modellsimulationen Die Verteilung der Massen im System Erde verändert sich dynamisch über die Zeit. ... Doctoral or Postdoctoral Thesis Antarktis* Grönland Ice Sheet bonndoc - The Repository of the University of Bonn |
institution |
Open Polar |
collection |
bonndoc - The Repository of the University of Bonn |
op_collection_id |
ftunivbonn |
language |
English |
topic |
Kombination Inversion GRACE Altmetrie Gravimetrie GPS Deformation Massentransporte Ozeanmodell Cryosphäre Grönland Antarktis Meeresspiegel sterisch SNREI GIA Geozentrum OBP Bodendruck Joint inversion gravimetry altimetry surface loading sea level ocean bottom pressure geocenter cryosphere steric ice sheet ocean model mass transport ddc:550 |
spellingShingle |
Kombination Inversion GRACE Altmetrie Gravimetrie GPS Deformation Massentransporte Ozeanmodell Cryosphäre Grönland Antarktis Meeresspiegel sterisch SNREI GIA Geozentrum OBP Bodendruck Joint inversion gravimetry altimetry surface loading sea level ocean bottom pressure geocenter cryosphere steric ice sheet ocean model mass transport ddc:550 Rietbroek, Roelof Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
topic_facet |
Kombination Inversion GRACE Altmetrie Gravimetrie GPS Deformation Massentransporte Ozeanmodell Cryosphäre Grönland Antarktis Meeresspiegel sterisch SNREI GIA Geozentrum OBP Bodendruck Joint inversion gravimetry altimetry surface loading sea level ocean bottom pressure geocenter cryosphere steric ice sheet ocean model mass transport ddc:550 |
description |
The mass distribution in the system Earth changes dynamically over time. Time-variable mass transport mainly arises from the interplay between the terrestrial hydrological water cycle, the ocean and atmosphere, and the Earth’s cryosphere. To understand the dynamics of the system Earth and its climate, it is of paramount importance to establish and maintain an accurate observational basis of these surface processes, against which models and theories can be tested. A variety of observational techniques are used today. The time-variable gravity is measured from space by the Gravity Recovery and Climate Experiment (GRACE), Earth deformation processes are monitored by a permanent global network of GPS stations, and sea surface changes are detected by a family of satellite altimeters. The underlying motivation of this work is that the combination of the different observation types allows the mitigation of some of the technique-specific limitations. In the framework of this dissertation, several types of geodetic observations have been combined in a least-squares sense to estimate present-day changes of surface mass storage in the Earth system, using dynamically consistent surface loading theory. Two types of inversion schemes have been designed and implemented. In the first scheme, time variable gravity from GRACE, deformations of a permanent GPS station network, and simulated ocean bottom pressure changes from an ocean model, are used to estimate weekly surface loading changes covering the entire globe. In the second inversion scheme, (inter-)annual changes of the Earth’s cryosphere, ocean and terrestrial water cycle, are parameterized by a predefined set of standing waves, whose time variations are estimated by combining GRACE gravimetry with satellite altimetry from Jason-1 and Jason-2. Ein kombinierter Ansatz zur Bestimmung von Meeresspiegelschwankungen und Auflastsveränderungen aus geodätischen Beobachtungen und Modellsimulationen Die Verteilung der Massen im System Erde verändert sich dynamisch über die Zeit. ... |
author2 |
Kusche, Jürgen Ilk, Karl-Heinz |
format |
Doctoral or Postdoctoral Thesis |
author |
Rietbroek, Roelof |
author_facet |
Rietbroek, Roelof |
author_sort |
Rietbroek, Roelof |
title |
Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
title_short |
Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
title_full |
Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
title_fullStr |
Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
title_full_unstemmed |
Retrieval of Sea Level and Surface Loading Variations from Geodetic Observations and Model Simulations : an Integrated Approach |
title_sort |
retrieval of sea level and surface loading variations from geodetic observations and model simulations : an integrated approach |
publisher |
Universitäts- und Landesbibliothek Bonn |
publishDate |
2014 |
url |
https://hdl.handle.net/20.500.11811/5832 |
genre |
Antarktis* Grönland Ice Sheet |
genre_facet |
Antarktis* Grönland Ice Sheet |
op_relation |
info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:5n-35460 https://hdl.handle.net/20.500.11811/5832 |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ openAccess |
op_doi |
https://doi.org/20.500.11811/5832 |
_version_ |
1766287564009897984 |