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. Icebergs in polar regions affect water salinity, altermarine habitats, and impose serious hazards on maritime operations andnavigation. These impacts mainly depend on the iceberg volume, which remainsan elusive parameter to measure. We investigate the capability of TanDEM-Xbistatic single-pass synthetic aperture radar interferometry (InSAR) toderive iceberg subaerial morphology and infer total volume. We cross-verifyInSAR 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 ormaximum height, we develop a new volumetric classification approach forapplications where iceberg volume is relevant. For icebergs with heightsexceeding 5 m, we find iceberg volumes derived from TanDEM-X and OIB datamatch within 7 %. We also derive a range of possible iceberg keel depthsrelevant to grounding and potential impacts on subsea installations. Theseresults suggest that TanDEM-X could pave the way for future single-passinterferometric systems for scientific and operational iceberg mapping andclassification based on iceberg volume and keel depth.

Iceberg topography and volume classification using TanDEM-X interferometry