Modern Concepts for Ground and Space Observations of the Earth Gravity Field
Convener:
Jürgen Müller
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Co-conveners:
Daniele Carbone,
Sébastien Merlet,
Marvin Reich,
Elske de Zeeuw - van Dalfsen,
Sergei Kopeikin,
Wenbin Shen
Orals
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Wed, 26 Apr, 08:30–10:15 (CEST), 10:45–12:30 (CEST) Room D3
Posters on site
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Attendance Wed, 26 Apr, 16:15–18:00 (CEST) Hall X2
Posters virtual
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Attendance Wed, 26 Apr, 16:15–18:00 (CEST) vHall GMPV/G/GD/SM
We encourage the dissemination of results from the application to various fields of absolute quantum gravimeters, which are gradually replacing devices based on the free-fall of corner cubes, since they allow nearly continuous absolute gravity measurements and offer the possibility to measure the gravity gradient. Quantum sensors are also increasingly considered for future gravity space missions. We also welcome results from gravimeters based on other technologies (e.g., MEMS or superconducting gravimeters) that have been used to study the redistributions of subsurface fluid masses (water, magma, hydrocarbons, etc.).
Besides gravimeters, other concepts can provide unique information on the Earth’s gravity field. According to Einstein’s theory of general relativity, frequency comparisons of highly precise optical clocks connected by optical links give direct access to differences of the gravity potential (relativistic geodesy) over long baselines. In future, precise optical clock networks can be applied for defining and realizing a new international height system or to monitor mass variations.
Laser interferometry between test masses in space with nanometer accuracy – successfully demonstrated through the GRACE-FO mission – also belongs to these novel concepts, and even more refined concepts (tracking swarms of satellites, space gradiometry) will be realized in the near future.
We invite presentations illustrating the state of the art of those novel techniques, that will open the door to a vast bundle of applications, including the gravimetric observation of the Earth-Moon system with high spatial-temporal resolution as well as the assessment of terrestrial mass redistributions, occurring at different space and time scales and providing unique information on the processes behind, e.g., climate change and volcanic activity.
This session is organized jointly with the IAG (International Association of Geodesy) project "Novel Sensors and Quantum Technology for Geodesy (QuGe)" and the H2020 project “New Tools for Terrain Gravimetry (NEWTON-g)”.
08:30–08:35
5-minute convener introduction
Chronometric Geodesy
08:35–08:55
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EGU23-13573
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solicited
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Highlight
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On-site presentation
08:55–09:05
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EGU23-5312
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ECS
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On-site presentation
09:15–09:25
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EGU23-12980
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ECS
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On-site presentation
09:25–09:35
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EGU23-11934
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On-site presentation
Future Satellite Gravimetry
09:45–09:55
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EGU23-13280
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ECS
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Highlight
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On-site presentation
10:05–10:15
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EGU23-12597
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ECS
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On-site presentation
Coffee break
Chairpersons: Daniele Carbone, Marvin Reich, Elske de Zeeuw - van Dalfsen
10:45–10:55
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EGU23-12725
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Highlight
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On-site presentation
Terrestrial Gravimetry - Sensors and Applications
11:05–11:15
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EGU23-12432
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ECS
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On-site presentation
11:15–11:25
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EGU23-5171
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ECS
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On-site presentation
11:25–11:35
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EGU23-14404
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ECS
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On-site presentation
11:35–11:45
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EGU23-8681
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On-site presentation
Integrated system development of a MEMS Pendulum Gravimeter
(withdrawn)
11:55–12:05
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EGU23-8358
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On-site presentation
12:05–12:15
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EGU23-12533
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ECS
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On-site presentation
12:15–12:25
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EGU23-4459
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Virtual presentation
12:25–12:30
Discussion
Chronometric Geodesy
X2.48
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EGU23-8745
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ECS
Gravimetry in Space and on Ground
X2.56
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EGU23-9502
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Highlight
X2.58
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EGU23-1730
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ECS
Estimation of Groundwater Storage Variations in African River Basins: Response to Global Climate Change Using GRACE and GRACE-FO among Past Two Decades
(withdrawn)
X2.59
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EGU23-17003
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ECS
Comparison of GRACE and GNSS Seasonal Load Displacements Considering Regional Averages and Discrete Points
(withdrawn)
Novel Gravimetric Concepts
vGGGS.3
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EGU23-3079
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ECS