Observing Fennoscandian Gravity Change by Absolute Gravimetry
The Nordic countries Norway, Sweden, Denmark and Finland are a key study region for the research of glacial isostasy, and, in addition, it offers a unique opportunity for validating and testing the results of the GRACE experiment. Over a period of five years, the expected life time of GRACE, a tempo...
Main Authors: | , , , , , , , , , , , , , , , , , , , , |
---|---|
Language: | unknown |
Published: |
2006
|
Subjects: | |
Online Access: | https://research.chalmers.se/en/publication/71307 |
id |
ftchalmersuniv:oai:research.chalmers.se:71307 |
---|---|
record_format |
openpolar |
spelling |
ftchalmersuniv:oai:research.chalmers.se:71307 2023-05-15T16:12:02+02:00 Observing Fennoscandian Gravity Change by Absolute Gravimetry Timmen, Ludger Gitlein, Olga Müller, Jürgen Denker, Heiner Mäkinen, Jaakko Bilker, Mirjam Pettersen, Bjørn Ragnvald Lysaker, Dagny I. Omang, Ove Christian Dahl Svendsen, J. G. G. Wilmes, Herbert Falk, Reinhard Reinhold, Andreas Hoppe, W. Scherneck, Hans-Georg Engen, Bjørn Harsson, Bjørn Geirr Engfeldt, Andreas Lilje, Mikael Strykowski, Gabriel Forsberg, René 2006 text https://research.chalmers.se/en/publication/71307 unknown https://research.chalmers.se/en/publication/71307 Geophysics Absolute gravimetry - Fennoscandian land uplift - geoid change - glacial isostatic adjustment (GIA) - postglacial rebound (PGR) - GRACE validation 2006 ftchalmersuniv 2022-12-11T06:57:30Z The Nordic countries Norway, Sweden, Denmark and Finland are a key study region for the research of glacial isostasy, and, in addition, it offers a unique opportunity for validating and testing the results of the GRACE experiment. Over a period of five years, the expected life time of GRACE, a temporal geoid variation of 3.0 mm is expected in the centre of the Fennoscandian land uplift area, corresponding to a gravity change of about 100 nm/s2. This is expected to be within the detection capabilities of GRACE. With terrestrial absolute gravimetry, the gravity change due to the land uplift can be observed with an accuracy of ±10 to 20 nm/s2 for a 5-year period. Thus, the terrestrial insitu observations (ground-truth) may be used to validate and test the GRACE results.Since 2003, absolute gravity measurements have been performed in Fennoscandia at about 30 stations covering Norway, Sweden, Finland and Denmark. Four groups with FG5 absolute gravimeters (BKG, FGI, IfE, UMB) are engaged to survey the uplift network annually by a mutually controlled procedure. Nearly all absolute stations are colocated with permanent GPS stations. From the 2003 and 2004 comparisons between the instruments, an overall accuracy of ±30 nm/s2 is indicated for a single absolute gravimeter and a single station determination. This is in full agreement with the project goal. Other/Unknown Material Fennoscandia Fennoscandian Chalmers University of Technology: Chalmers research Norway |
institution |
Open Polar |
collection |
Chalmers University of Technology: Chalmers research |
op_collection_id |
ftchalmersuniv |
language |
unknown |
topic |
Geophysics Absolute gravimetry - Fennoscandian land uplift - geoid change - glacial isostatic adjustment (GIA) - postglacial rebound (PGR) - GRACE validation |
spellingShingle |
Geophysics Absolute gravimetry - Fennoscandian land uplift - geoid change - glacial isostatic adjustment (GIA) - postglacial rebound (PGR) - GRACE validation Timmen, Ludger Gitlein, Olga Müller, Jürgen Denker, Heiner Mäkinen, Jaakko Bilker, Mirjam Pettersen, Bjørn Ragnvald Lysaker, Dagny I. Omang, Ove Christian Dahl Svendsen, J. G. G. Wilmes, Herbert Falk, Reinhard Reinhold, Andreas Hoppe, W. Scherneck, Hans-Georg Engen, Bjørn Harsson, Bjørn Geirr Engfeldt, Andreas Lilje, Mikael Strykowski, Gabriel Forsberg, René Observing Fennoscandian Gravity Change by Absolute Gravimetry |
topic_facet |
Geophysics Absolute gravimetry - Fennoscandian land uplift - geoid change - glacial isostatic adjustment (GIA) - postglacial rebound (PGR) - GRACE validation |
description |
The Nordic countries Norway, Sweden, Denmark and Finland are a key study region for the research of glacial isostasy, and, in addition, it offers a unique opportunity for validating and testing the results of the GRACE experiment. Over a period of five years, the expected life time of GRACE, a temporal geoid variation of 3.0 mm is expected in the centre of the Fennoscandian land uplift area, corresponding to a gravity change of about 100 nm/s2. This is expected to be within the detection capabilities of GRACE. With terrestrial absolute gravimetry, the gravity change due to the land uplift can be observed with an accuracy of ±10 to 20 nm/s2 for a 5-year period. Thus, the terrestrial insitu observations (ground-truth) may be used to validate and test the GRACE results.Since 2003, absolute gravity measurements have been performed in Fennoscandia at about 30 stations covering Norway, Sweden, Finland and Denmark. Four groups with FG5 absolute gravimeters (BKG, FGI, IfE, UMB) are engaged to survey the uplift network annually by a mutually controlled procedure. Nearly all absolute stations are colocated with permanent GPS stations. From the 2003 and 2004 comparisons between the instruments, an overall accuracy of ±30 nm/s2 is indicated for a single absolute gravimeter and a single station determination. This is in full agreement with the project goal. |
author |
Timmen, Ludger Gitlein, Olga Müller, Jürgen Denker, Heiner Mäkinen, Jaakko Bilker, Mirjam Pettersen, Bjørn Ragnvald Lysaker, Dagny I. Omang, Ove Christian Dahl Svendsen, J. G. G. Wilmes, Herbert Falk, Reinhard Reinhold, Andreas Hoppe, W. Scherneck, Hans-Georg Engen, Bjørn Harsson, Bjørn Geirr Engfeldt, Andreas Lilje, Mikael Strykowski, Gabriel Forsberg, René |
author_facet |
Timmen, Ludger Gitlein, Olga Müller, Jürgen Denker, Heiner Mäkinen, Jaakko Bilker, Mirjam Pettersen, Bjørn Ragnvald Lysaker, Dagny I. Omang, Ove Christian Dahl Svendsen, J. G. G. Wilmes, Herbert Falk, Reinhard Reinhold, Andreas Hoppe, W. Scherneck, Hans-Georg Engen, Bjørn Harsson, Bjørn Geirr Engfeldt, Andreas Lilje, Mikael Strykowski, Gabriel Forsberg, René |
author_sort |
Timmen, Ludger |
title |
Observing Fennoscandian Gravity Change by Absolute Gravimetry |
title_short |
Observing Fennoscandian Gravity Change by Absolute Gravimetry |
title_full |
Observing Fennoscandian Gravity Change by Absolute Gravimetry |
title_fullStr |
Observing Fennoscandian Gravity Change by Absolute Gravimetry |
title_full_unstemmed |
Observing Fennoscandian Gravity Change by Absolute Gravimetry |
title_sort |
observing fennoscandian gravity change by absolute gravimetry |
publishDate |
2006 |
url |
https://research.chalmers.se/en/publication/71307 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Fennoscandia Fennoscandian |
genre_facet |
Fennoscandia Fennoscandian |
op_relation |
https://research.chalmers.se/en/publication/71307 |
_version_ |
1765997272390172672 |