Dated radar stratigraphy over Ferrigno Ice Stream, West Antarctica.

Dated radar stratigraphy over Ferrigno Ice Stream, West Antarctica, derived from BBAS PASIN (2004/05), GRADES-IMAGE (2006/07), ground-based DELORES (2009/10), and OIB MCoRDs2 (2016 and 2018).

This dataset contains the position and depth (ice thickness) of three spatially-extensive Internal Reflecting Horizons (IRHs) mapped from ice-penetrating radar data acquired with three radar systems across West Antarctica. The datasets begins at the intersection with a previous study across the Pine Island Glacier catchment (Bodart et al., 2021) and extends northwards towards Ferrigno Ice Stream (74$^\circ$34'37" S, 86$^\circ$54'16" W).  The IRH ages of the 4.72 ka and 6.94 ka IRHs were originally assinged using the WAIS Divide ice-core chronology, while the age of the 2.61 ka IRH is derived using a 1-D ice-flow model (Bodart et al., 2021). We refine these ages to correspond to distinctive sulphate peaks in the WD2014 chronology (Buizert et al., 2015; Fudge et al., 2016). The new ages are therefore, 2.38 ka, 4.86 ka, and 7.18 ka.

This study was motivated by the Scientific Committee for Antarctic Research's Action Group AntArchitecture. The authors gratefully acknowledge British Antarctic Survey Scientific and Operations personnel for supporting the acquisition of airborne (PASIN) and ground-based (DELORES) RES data, and NASA/Operation IceBridge/University of Kansas personnel under the auspices of the U.S. National Science Foundation (NSF) Center for Remote Sensing of Intergrated Systems (CReSIS) for acquiring MCoRDS2 airborne RES data, across northern Ellsworth Land. Chris Griffiths provided invaluable field assistance for the 2009/10 Ferrigno Ice Stream RES campaign.