Iceberg topography and volume classification using TanDEM-X interferometry
Artikel i vetenskaplig tidskrift, 2019

Icebergs in polar regions affect water salinity, alter marine habitats, and impose serious hazards on maritime operations and navigation. These impacts mainly depend on the iceberg volume, which remains an elusive parameter to measure. We investigate the capability of TanDEM-X bistatic single-pass synthetic aperture radar interferometry (InSAR) to derive iceberg subaerial morphology and infer total volume. We cross-verify InSAR results with Operation IceBridge (OIB) data acquired near Wordie Bay, Antarctica, as part of the OIB/TanDEM-X Antarctic Science Campaign (OTASC). While icebergs are typically classified according to size based on length or maximum height, we develop a new volumetric classification approach for applications where iceberg volume is relevant. For icebergs with heights exceeding 5 m, we find iceberg volumes derived from TanDEM-X and OIB data match within 7 %. We also derive a range of possible iceberg keel depths relevant to grounding and potential impacts on subsea installations. These results suggest that TanDEM-X could pave the way for future single-pass interferometric systems for scientific and operational iceberg mapping and classification based on iceberg volume and keel depth.

iceberg

iceberg drift

sea ice

Författare

Dyre Oliver Dammann

Chalmers, Rymd-, geo- och miljövetenskap, Mikrovågs- och optisk fjärranalys

Leif Eriksson

Chalmers, Rymd-, geo- och miljövetenskap, Mikrovågs- och optisk fjärranalys

Son V. Nghiem

California Institute of Technology (Caltech)

Erin C. Pettit

Oregon State Univ, Coll Earth Ocean & Atmospher Sci

Nathan T. Kurtz

NASA Goddard Space Flight Center

John G. Sonntag

NASA Goddard Space Flight Center

Thomas E. Busche

Deutsches Zentrums für Luft- und Raumfahrt (DLR)

Franz J. Meyer

University of Alaska Fairbanks

Andrew R. Mahoney

University of Alaska Fairbanks

Cryosphere

1994-0416 (ISSN) 1994-0424 (eISSN)

Vol. 13 7 1861-1875

Ämneskategorier

Fjärranalysteknik

Vattenteknik

Geofysik

DOI

10.5194/tc-13-1861-2019

Mer information

Senast uppdaterat

2019-10-23