A land uplift model in Fennoscandia combining GRACE and absolute gravimetry data

authored by: Jürgen Müller, Majid Naeimi, Olga Gitlein, Ludger Timmen, Heiner Denker
Abstract: Since 2002 the GRACE satellite mission provides monthly solutions of the Earth's gravity field reflecting mass variations on various spatial and temporal scales. The glacial isostatic adjustment (GIA)-induced trend signal in Fennoscandia can be obtained with a spatial resolution of about 300-400. km. Moreover, since 2003 the Institut für Erdmessung has carried out absolute gravity (AG) measurements in Fennoscandia in close cooperation with the Scandinavian partners. From the AG data, point-wise mass variations at the AG sites have been determined including the GIA-induced trend signal. For direct comparison of those point values with regional results from GRACE, vertical movements of the sites have been considered using rates determined from permanent GPS measurements. The various results for GIA-related effects agree well near the uplift center, although the different raw data contain different signal contributions. In a final step, we combine the AG trend values (including GPS rates) and the GRACE results to obtain a data-based solution of the present-day secular mass variation in Fennoscandia.Here, we present results of the individual techniques as well as the combined solution, where we also discuss possible errors sources.
Organisation(s): Institute of Geodesy
Quest: Centre for Quantum Engineering and Space-Time Research
Type: Article
Journal: Physics and chemistry of the earth
Volume: 53-54
Pages: 54-60
No. of pages: 7
ISSN: 1474-7065
Publication date: 15.12.2010
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Geophysics, Geochemistry and Petrology
Electronic version(s): https://doi.org/10.1016/j.pce.2010.12.006 (Access: Unknown)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{af0ccf1e59af4159a1679ce3d36af938,
title = "A land uplift model in Fennoscandia combining GRACE and absolute gravimetry data",
abstract = "Since 2002 the GRACE satellite mission provides monthly solutions of the Earth's gravity field reflecting mass variations on various spatial and temporal scales. The glacial isostatic adjustment (GIA)-induced trend signal in Fennoscandia can be obtained with a spatial resolution of about 300-400. km. Moreover, since 2003 the Institut f{\"u}r Erdmessung has carried out absolute gravity (AG) measurements in Fennoscandia in close cooperation with the Scandinavian partners. From the AG data, point-wise mass variations at the AG sites have been determined including the GIA-induced trend signal. For direct comparison of those point values with regional results from GRACE, vertical movements of the sites have been considered using rates determined from permanent GPS measurements. The various results for GIA-related effects agree well near the uplift center, although the different raw data contain different signal contributions. In a final step, we combine the AG trend values (including GPS rates) and the GRACE results to obtain a data-based solution of the present-day secular mass variation in Fennoscandia.Here, we present results of the individual techniques as well as the combined solution, where we also discuss possible errors sources.",
keywords = "Absolute gravimetry, Data combination, Fennoscandian land uplift, Glacial isostatic adjustment, GRACE",
author = "J{\"u}rgen M{\"u}ller and Majid Naeimi and Olga Gitlein and Ludger Timmen and Heiner Denker",
note = "Funding information: The research has been supported by the German Research Foundation (DFG) through the research Grants MU1141/3-1, 3-2, and 3-3 as well as MU 1141/8-1. Parts of the work have been funded by the center of excellence Quantum Engineering and Space-Time Research (QUEST).",
year = "2010",
month = dec,
day = "15",
doi = "10.1016/j.pce.2010.12.006",
language = "English",
volume = "53-54",
pages = "54--60",
journal = "Physics and chemistry of the earth",
issn = "1474-7065",
publisher = "Elsevier Ltd.",
}