Time-Varying Gravity Models from GRACE Data over NW Australia
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Transcript of Time-Varying Gravity Models from GRACE Data over NW Australia
Time-Varying Gravity Models from GRACE Data
over NW Australia
Lily Yu, IIP/PEI Summer 2010Research School for the Earth Sciences,
ANU Image: NASA/JPL
Background• The geoid
• Observing ice melt and droughts
• The GRACE satellites
• The researchers: NASA/JPL, CSR at University of Texas, CNES/GRGS, GeoForschungsZentrum Potsdam (GFZ)
Error
The ProblemGravity field change, 2002-2008Gravity field change, 2008-2010
The Problem Gravity field change, 2002-2010
Murray-Darling Basin drought, 2001-present
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The Problem with the Problem
River Monitoring Stations
Rainfall Monitoring Stations
Ground-based gravity surveys by WA Mining and Petroleum
GRGS ECMWF-based Dealiasing Products
GLDAS Hydrological Model
Further Inquiries
• Biomass (NVIS)
• National Water Commission’s future mapping projects
• Seismological data
Acknowledgements
• Paul Tregoning, supervisorRSES, ANU
• Emma-Kate PotterRSES, ANU
• Tony PurcellRSES, ANU
• Charlotte AllenRSES, ANU
• IIP/PEI