Daily GRACE gravity field solutions track major flood events in the Ganges-Brahmaputra Delta

Ben T. Gouweleeuw; Andreas Kvas; Christian Gruber; Animesh K. Gain; Thorsten Mayer-Guerr; Frank Flechtner; Andreas Guentner

doi:10.5194/hess-22-2867-2018

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Daily GRACE gravity field solutions track major flood events in the Ganges-Brahmaputra Delta

Journal article

Open access

Peer reviewed

Daily GRACE gravity field solutions track major flood events in the Ganges-Brahmaputra Delta

Ben T. Gouweleeuw, Andreas Kvas, Christian Gruber, Animesh K. Gain, Thorsten Mayer-Guerr, Frank Flechtner and Andreas Guentner

Hydrology and earth system sciences, Vol.22(5), pp.2867-2880

2018

DOI: https://doi.org/10.5194/hess-22-2867-2018

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Abstract

Geology

Geosciences, Multidisciplinary

Physical Sciences

Science & Technology

Water Resources

Two daily gravity field solutions based on observations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission are evaluated against daily river runoff data for major flood events in the Ganges-Brahmaputra Delta (GBD) in 2004 and 2007. The trends over periods of a few days of the daily GRACE data reflect temporal variations in daily river runoff during major flood events. This is especially true for the larger flood in 2007, which featured two distinct periods of critical flood level exceedance in the Brahmaputra River. This first hydrological evaluation of daily GRACE gravity field solutions based on a Kalman filter approach confirms their potential for gravity-based large-scale flood monitoring. This particularly applies to shortlived, high-volume floods, as they occur in the GBD with a 4-5-year return period. The release of daily GRACE gravity field solutions in near-real time may enable flood monitoring for large events.

Details

Title: Daily GRACE gravity field solutions track major flood events in the Ganges-Brahmaputra Delta
Authors/Creators: Ben T. Gouweleeuw (Author) - GFZ Helmholtz Centre for Geosciences
Andreas Kvas (Author) - Graz University of Technology
Christian Gruber (Author) - GFZ Helmholtz Centre for Geosciences
Animesh K. Gain (Author) - Christian-Albrechts-Universität zu Kiel
Thorsten Mayer-Guerr (Author) - Graz University of Technology
Frank Flechtner (Author) - GFZ Helmholtz Centre for Geosciences
Andreas Guentner (Author) - GFZ German Res Ctr Geosci, Sect Hydrol 5 4, D-14473 Potsdam, Germany
Publication Details: Hydrology and earth system sciences, Vol.22(5), pp.2867-2880
Publisher: Copernicus Gesellschaft Mbh
Number of pages: 14
Grant note: 637010 / European Union's Horizon project European Gravity Service for Improved Emergency Management (EGSIEM)
Identifiers: 991005560449907891
Murdoch Affiliation: Centre for Terrestrial Ecosystem Science and Sustainability; Centre for Sustainable Aquatic Ecosystems; School of Environmental and Conservation Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 8 Earth Sciences; 8.292 Mapping & Topography; 8.292.889 Precise Point Positioning
Web Of Science research areas: Geosciences, Multidisciplinary; Water Resources
ESI research areas: Geosciences