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Synergistic use of Sentinel-1A/B, TanDEM-X and COSMO-SkyMed for Cryosphere science

Milillo, Pietro and Moreira, Alberto and Zink, Manfred and Milillo, Giovanni and Rignot, Eric and Rizzoli, Paola and Scheuchl, Bernd and Mouginot, Jeremie and Bueso Bello, Jose Luis and Prats, Pau (2019) Synergistic use of Sentinel-1A/B, TanDEM-X and COSMO-SkyMed for Cryosphere science. ESA Living Planet Symposium, 2019-05-13 - 2019-05-17, Milan, Italy.

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We employ data from the second generation of SAR systems, e.g., the Italian COSMO-SkyMed (CSK) constellation, the German TanDEM-X formation and the European Sentinel-1A/B constellation to monitor the characteristics of grounding line migration using short repeat-time interferometry and accurate InSAR DEM in the Amundsen Sea Embayment (ASE), West Antarctica. The ASE is a marine-based ice sheet with a retrograde bed containing enough ice to raise global sea level by 120 cm. Several studies have inferred the mechanical properties of portions of ASE using observationally constrained numerical models, but these studies offer only temporal snapshots of basal mechanics owing to a dearth of observational time series. Prior attempts of grounding lines mapping have been limited because few space-borne SAR missions offer the short-term repeat pass capability required to map the differential vertical displacement of floating ice at tidal frequencies with sufficient detail to resolve grounding line boundaries in areas of fast ice deformation. Using 1-day CSK repeat pass data and TanDEM-X DEMs, we collected frequent, high-resolution grounding line measurements of Pine Island (PIG), Thwaites, Kohler and Smith glaciers spanning 2015-2016. We compare the results with ERS data spanning 1996-2011, and Sentinel-1A 2014-2015 data. We observe an ongoing, rapid 2 km/yr grounding line retreat on Smith, 0.5 km/yr retreat on Pope, ongoing 1 km/yr retreat on Thwaites and PIG and a slight re-advance on Kohler since 2011. On PIG, the data reveal rapid subsidence along the glacier flanks, significantly more than in 1996/2000. We do not observe similar patterns on the other glaciers.

Item URL in elib:https://elib.dlr.de/127178/
Document Type:Conference or Workshop Item (Speech)
Title:Synergistic use of Sentinel-1A/B, TanDEM-X and COSMO-SkyMed for Cryosphere science
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Moreira, AlbertoUNSPECIFIEDhttps://orcid.org/0000-0002-3436-9653UNSPECIFIED
Zink, ManfredUNSPECIFIEDhttps://orcid.org/0000-0002-4308-5636UNSPECIFIED
Rizzoli, PaolaUNSPECIFIEDhttps://orcid.org/0000-0001-9118-2732UNSPECIFIED
Bueso Bello, Jose LuisUNSPECIFIEDhttps://orcid.org/0000-0003-3464-2186UNSPECIFIED
Prats, PauUNSPECIFIEDhttps://orcid.org/0000-0002-7583-2309UNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:SAR, Interferometry, Cryosphere, TanDEM-X, Cosmo-SkyMed, Digital Elevation model, grounding line
Event Title:ESA Living Planet Symposium
Event Location:Milan, Italy
Event Type:international Conference
Event Dates:2019-05-13 - 2019-05-17
Organizer:European Space Agency (ESA)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Projekt TanDEM-X (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Rizzoli, Paola
Deposited On:23 Apr 2019 14:20
Last Modified:15 Jan 2020 11:31

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