Dataset Information
ICECAP Basal Interface Specularity Content Profiles: IPY and OIB
Data DOI:
Cite as
Young, D. A., Blankenship, D. D., Greenbaum, J., Roberts, J., Schroeder, D., Siegert, M., & van Ommen, T. (2020) "ICECAP Basal Interface Specularity Content Profiles: IPY and OIB" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
The International Collaborative Exploration of the Cryosphere though Airborne Profiling (ICECAP) collected five seasons of aerogeophysical data data through the NSFs International Polar Year and NASAs Operation Ice Bridge programs in East Antarctica, using the coherent HiCARS 60 MHz radar system. By comparing echo strengths for different focusing apertures, and accounting for the ranges and angles involved, we can derive the "specularity content" of the bed echo, a proxy for small scale bed roughness and a good indicator for subglacial water pressure in regions of distributed subglacial water (Schroeder et al., 2014, IEEE GRSL, 10.1109/LGRS.2014.2337878; IEEE; Dow et al., 2019, EPSL Specularity data are inherently noisy, so these products have been smoothed with a 1 km filter.
Young, Duncan A.; Blankenship, Donald D.; Roberts, Jason; Siegert, Martin; van Ommen, Tas; Greenbaum, Jamin; Schroeder, Dustin
Date Created:
USAP-DC (current)
Spatial Extent(s)
West: 80, East: 170, South: -80, North: -65
Temporal Extent(s)
Start: 2008-12-15 - End: 2012-12-20
  1. Young, D. A., Schroeder, D. M., Blankenship, D. D., Kempf, S. D., and Quartini, E.,2016, The distribution of basal water between Antarctic subglacial lakes from radar sounding, Philosophical Transactions Of The Royal Society A, 374, 20140297, 1-21. (doi:10.1098/rsta.2014.0297)
  2. Schroeder, D. M., Blankenship, D. D., Raney, R. K., and Grima, C.,2015, Estimating subglacial water geometry using radar bed echo specularity: application to Thwaites Glacier, West Antarctica, IEEE Geoscience And Remote Sensing Letters, 12, 3, 443-447 (doi:10.1109/LGRS.2014.2337878)
  3. Dow, C. F., McCormack, F. S., Young, D. A., Greenbaum, J. S., Roberts, J. L., and Blankenship, D. D.,2019, Totten Glacier subglacial hydrology determined from geophysics and modeling, Earth And Planetary Science Letters (doi:10.1016/j.epsl.2019.115961)
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This dataset has been downloaded 12 times since March 2017 (based on unique date-IP combinations)