SAR analysis of the Larsen-C A-68 iceberg displacements

Iceberg topography and volume classification using TanDEM-X interferometry

“…TanDEM-X has a repeatpass cycle of 11 d, limiting data availability and reducing the applicability of InSAR in an operational setting. Future systems such as the LOTUSat-1 (2021 launch) and LOTUSat-2 (2025) X-band SAR missions (Pham, 2017) may alleviate this concern. However, the capability of LOTUSat for iceberg detection needs to be evaluated specifically based on LOTUSat SAR characteristics and orbit configurations.…”

“…The TanDEM-X data over Wordie Bay were acquired in conjunction with the Operation IceBridge (OIB) fall 2017 Antarctic campaign on 21 November 2017, of which the OIB/TanDEM-X Antarctic Science Campaign (OTASC) (Nghiem et al, 2018) was a component. Recognizing the potential value of OTASC for operational sea ice and iceberg applications, the U.S. National Ice Center participated, supported, and contributed to the success of OTASC (Nghiem et al, 2018).…”

“…The TanDEM-X data over Wordie Bay were acquired in conjunction with the Operation IceBridge (OIB) fall 2017 Antarctic campaign on 21 November 2017, of which the OIB/TanDEM-X Antarctic Science Campaign (OTASC) (Nghiem et al, 2018) was a component. Recognizing the potential value of OTASC for operational sea ice and iceberg applications, the U.S. National Ice Center participated, supported, and contributed to the success of OTASC (Nghiem et al, 2018). OIB is a decade-long series of annual Arctic and Antarctic airborne surveys intended to bridge the gap between polar land and sea ice measurements collected by NASA's ICESat-1 and ICESat-2 spacecraft (Zwally et al, 2002;Markus et al, 2017).…”

“…The aircraft was equipped with a suite of geophysical instruments, including a pair of scanning laser altimeters, known as the Airborne Topographic Mapper, or ATM (Martin et al, 2012), a digital high-resolution camera system called the Digital Mapping System (DMS) (Dominguez, 2010), and associated GPS, inertial, and precise navigation systems. When merged, the three-dimensional point cloud data from the ATM and the geolocated imagery from the DMS enabled the construction of a 250 m wide, submeter resolution digital elevation model (DEM) with a vertical accuracy of ∼ 0.2 m and 10 cm×10 cm pixel spacing (Nghiem et al, 2018). Data were acquired over our study area in Wordie Bay on 21 November, 2017 (17:26:58-17:28:34 UTC) with acquisition ID 172759 (Studinger, 2016), 8 d prior to the TanDEM-X acquisition.…”

“…Icebergs are found in high concentrations near the outlets of marine-terminating glaciers and ice sheets (i.e., tidewater glaciers and ice shelves), especially in marginal seas of the Antarctic and Greenland ice sheets and also in significant quantities in Alaska and Chile. Icebergs are created by calving events at the glacier ice-ocean boundary and can range in size from less than a meter length at the waterline to over 100 km (e.g., Lazzara et al, 1999;Parmiggiani et al, 2018). Icebergs differ largely in shape based on age and geographic region.…”