USAP-DC

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Radar Sounding Observations of the Amundsen Sea Embayment, 2004-2005 Data DOI: https://doi.org/10.15784/601436 Cite as Chu, W., Culberg, R., Hilger, A., Jordan, T., Schroeder, D., Seroussi, H., et al. (2021) "Radar Sounding Observations of the Amundsen Sea Embayment, 2004-2005" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601436. AMD - DIF Record(s) USAP-1745137_1 Abstract The dataset contains radargrams from the 2004-2005 airborne radar sounding surveys on Pine Island Glacier and Thwaites Glacier as part of the BBAS and AGASEA projects. It also includes basal reflectivity and one-way attenuation rates derived from these radargrams. Radar data from the Pine Island Ice Shelf inland to the Bentley Sublglacial Trench were collected by the British Antarctica Survey (BAS) with the Polarimetric-radar Airborne Science INstrument (PASIN) radar sounder, operating at a center frequency of 150 MHz and 15 MHz bandwidth. Data over Thwaites Glacier were collected by the University of Texas Institute for Geophysics (UTIG) High Capability Airborne Radar Sounder (HiCARS) operating at a center frequency of 60 MHz with 15 MHz of bandwidth. Data are provided as 50km segments in NetCDF files, along with kml location files, and pdf files for browsing radargrams images by flight transect. Details of the processing methods are included in the associated README file. The processed data sets (reflectivity and attenuation) are provided as a single NetCDF file for each flight transect. Details of the calibration and processing procedures are provided in Chu, et al (in review). Creator(s): Chu, Winnie; Hilger, Andrew M.; Culberg, Riley; Schroeder, Dustin; Jordan, Thomas M.; Seroussi, Helene; Young, Duncan A.; Vaughan, David G. Date Created: 2021-03-05 Repository: USAP-DC (current) License: Creative Commons Attribution Only v4.0 Generic [CC BY 4.0] Spatial Extent(s) West: -130, East: -82.7, South: -81.5, North: -72.9 Temporal Extent(s) Start: 2004-12-13 - End: 2005-01-30 Award(s) NSF 1745137 Version: 1 Related Project(s) CAREER: Cross-Instrument Synthesis of Antarctic Radar Sounding Observations References Chu, W., Hilger, A. M., Culberg, R., Schroeder, D. M., Jordan, T. M., Seroussi, H., et al. (2021). Multi-System Synthesis of Radar Sounding Observations of the Amundsen Sea Sector from the 2004-2005 Field Season. Journal of Geophysical Research: Earth Surface, 126, e2021JF006296. (doi:10.1029/2021JF006296) Holt, J. W., Blankenship, D. D., Morse, D. L., Young, D. A., Peters, M. E., Kempf, S. D., et al. (2006). New boundary conditions for the West Antarctic Ice Sheet: Subglacial topography of the Thwaites and Smith glacier catchments. Geophysical Research Letters, 33(9), 518. (doi:10.1029/2005GL025561 ) Vaughan, D. G., Corr, H. F. J., Ferraccioli, F., Frearson, N., O'Hare, A., Mach, D., et al. (2006). New boundary conditions for the West Antarctic ice sheet: Subglacial topography beneath Pine Island Glacier. Geophysical Research Letters, 33(9), 516. (doi:10.1029/2005GL025588 ) Keywords Amundsen Sea Embayment Antarctica Bed Reflectivity Cryosphere Ice Penetrating Radar Radar Echo Sounder