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Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 ESA’s supporting Activities Related to Mass Transport in the Earth System Roger Haagmans.

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Presentation on theme: "Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 ESA’s supporting Activities Related to Mass Transport in the Earth System Roger Haagmans."— Presentation transcript:

1 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 ESA’s supporting Activities Related to Mass Transport in the Earth System Roger Haagmans Mission Science Division European Space Agency

2 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Swarm mission: 3D-Mantle Conductivity (A. Jackson ETH Zürich, DNSC, CUP) Swarm mission: gravity field potential (Christian Gerlach TUM and Pieter Visser DUT) Studies related to future ideas

3 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Swarm Satellite & Constellation launch after 1.5 yr after 3 yrs after 4.5 yrs launchafter 4.5 years red (C) 530 km500 km yellow (A,B) 470 km300 km GPS Patch Antennas Accelerometer Magnetic package

4 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 3-D Electrical Conductivity of the Mantle Time-varying external (inducing) magnetic fields produce induced electric currents in the conducting Earth conductivity is sensitive to composition and temperature These induced currents cause induced magnetic field variations

5 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 3-D Electrical Conductivity of the Mantle Measured on ground or in space is the total (external + induced) magnetic field Separation of external and induced fields enables determination of the electrical conductivity of the Earth’s interior 3D-Conductivity: hours to months periods, corresponding to app. 100 - 1000 km depth Study team led by Andy Jackson at ETH Zürich together with DNSC Copenhagen and CUP (Prague)

6 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Swarm mission: 3D-Mantle Conductivity (A. Jackson ETH Zürich, DNSC, CUP) Swarm mission: gravity field potential (Christian Gerlach TUM and Pieter Visser DUT) Studies related to future ideas

7 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Swarm and Gravity - Constellation Observation: GPS-baseline between satellites GRACE A-B:along-track (KBR, scalar) Swarm A-B:cross-track (GPS, vector) Swarm A-C: ~ radial (GPS, vector) Geometry:

8 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Gravity Field Gradients along-trackcross-track radial

9 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 along-trackcross-track along + crossradial (1) SH-Error Characteristics from Gradients in x,y and z

10 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Simulation results: 1 Month A-B and A-C

11 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Swarm mission: 3D-Mantle Conductivity (A. Jackson ETH Zürich, DNSC, CUP) Swarm mission: gravity field potential (Christian Gerlach TUM and Pieter Visser DUT) Studies related to future ideas

12 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007  Enabling Observation techniques for Future Solid Earth Missions.(2003)  Laser Doppler Interferometry Mission for Determination of the Earth’s gravity field. (2005)  Gravity Gradient sensor technology for future planetary missions. (2005)  Laser Interferometry High Precision Tracking for LEO. (2006)  Monitoring and Modelling Individual Sources of Mass Distribution and Transport in the Earth’s System by Means of Satellites (2007 18 months) Courtesy: Thales Alenia Space ESA studies: future gravity field concepts

13 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Measurement and control elements of the SSI mission

14 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Future Mission Concept From: Ilk et al (2005) Future Concepts?

15 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Study Team Geophysical Modeling Gravity modeling Mission design SRONUtrecht, NLR. Koop++ DEOSDelft, NLP. VisserSolid earth++ IAPGMunchen, DET. Gruber M. Thomas Atmosphere Oceans ++ GISStuttgart, DEN. Sneeuw++ ULLuxemburg, LUT. van DamGravity+ AWIBremerhaven, DEM. LoschOceans BGCBristol, UKJ. BamberIce SCEGNewcastle, UKM. KingTides UCGUtrecht, NLM. BierkensHydrology

16 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Study logicGeophysicalmodelling Gravitymodelling Missiondesign Gravityretrieval ObservabilitySeparability

17 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Geophysical modelling Solid Earth TidesOceans Atmosphere Ice Hydrology Simulated “real” world ConsistentCompatibleCompleteCoupledCoordinatedDedicatedSufficientRealistic

18 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Current step: Gravity field modelling Geophysical model Earth OrbitObservableConstellation Input gravity Observed gravity along orbit + observation error

19 Joint GSTM and DFG SPP Symposium, GFZ-Potsdam 15-17 October 2007 Conclusions Future Mission requires solid preparation: coordination with complementary measurement techniques from other future satellites (like SMOS, CryoSat, Sentinels e.g.) Activities in ESA complement DFG efforts and try to learn from existing analysis to understand the needs for a future mission concept


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