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Five decades of radioglaciology

Dustin M. Schroeder, Robert G. Bingham, Donald D. Blankenship, Knut Christianson, Olaf Eisen, Gwenn E. Flowers, Nanna B. Karlsson, Michelle R. Koutnik, John D. Paden, Martin J. Siegert
2020 Annals of Glaciology  
Terrestrially, airborne radar sounding has been used in glaciology to observe ice thickness, basal topography and englacial layers for five decades.  ...  As a result, a wide array of orbital, airborne, ground-based, and in situ instruments, platforms and data analysis approaches for radioglaciology have been developed, applied or proposed.  ...  References Aglyamov Y, Schroeder DM and Vance SD (2017) Bright prospects for radar detection of Europa's ocean. Icarus 281, 334-337. doi: 10.1016/j.icarus. 2016.08.014.  ... 
doi:10.1017/aog.2020.11 fatcat:2ozs3qgvrjbqrl5263rpdceoni

The distribution of basal water between Antarctic subglacial lakes from radar sounding

D. A. Young, D. M. Schroeder, D. D. Blankenship, Scott D. Kempf, E. Quartini
2015 Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences  
One contribution of 17 to a Theo Murphy meeting issue 'Antarctic subglacial lake exploration: first results and future plans' .  ...  We thank the field teams and flight crews over the 15 years represented by these dataset; USAP, AAD and IPEV for logistical support; and our teams of undergraduate and high school data interpreters.  ...  Siegert for the invitation to present at the workshop summarized in this volume, and the Royal Society for supporting travel and accommodation.  ... 
doi:10.1098/rsta.2014.0297 pmid:26667910 fatcat:mgnovzvhmvhlhfdxt5ailsejei

Radar‐detected englacial debris in the West Antarctic Ice Sheet

Kate Winter, John Woodward, Neil Ross, Stuart A. Dunning, Andrew S. Hein, Matthew J. Westoby, Riley Culberg, Shasta M. Marrero, Dustin M. Schroeder, David E. Sugden, Martin J. Siegert
2019 Geophysical Research Letters  
Our ability to detect and map sediment-rich ice in Antarctica has been hindered by technical limitations of geophysical equipment and data availability, until now.  ...  In this paper ice-penetrating radar is used to detect sediments in the Weddell Sea sector of the West Antarctic Ice Sheet.  ...  Financial support for the collection of airborne radio-echo sounding data was provided by the NERC Antarctic Funding Initiative grant NE/G03071/1. R. Culberg and D. M.  ... 
doi:10.1029/2019gl084012 fatcat:gd7cfa3y6veabjdskepbiqq4wq

Airborne fine-resolution UHF radar: an approach to the study of englacial reflections, firn compaction and ice attenuation rates

Cameron Lewis, Sivaprasad Gogineni, Fernando Rodriguez-Morales, Ben Panzer, Theresa Stumpf, John Paden, Carl Leuschen
2015 Journal of Glaciology  
We have built and operated an ultra-wideband UHF pulsed-chirp radar for measuring firn stratigraphy from airborne platforms over the ice sheets of Greenland and West Antarctica.  ...  Our analysis found a wide range of capabilities, including imaging of post firn–ice transition horizons and sounding of shallow glaciers and ice shelves.  ...  ACKNOWLEDGEMENTS This work was completed with funding from the US National Science Foundation under grant ANT-0424589 and from NASA under grant NNX10AT68G. We acknowledge the support provided by J.  ... 
doi:10.3189/2015jog14j089 fatcat:j6z2qrcyc5fq7hdzjgaxo74gsa

Layer optimized SAR processing and slope estimation in radar sounder data

Davide Castelletti, Dustin M. Schroeder, Elisa Mantelli, Andrew Hilger
2019 Journal of Glaciology  
However, when traditional along-track synthetic aperture radar (SAR) processing is applied, steep layers can disappear, limiting the detectability and interpretability of englacial layer geometry.  ...  Airborne radar sounder data is the primary remote sensing solution for directly observing englacial layers and structures at the glacier-catchment to ice-sheet scale.  ...  Siegert and N. Ross are gratefully acknowledged for providing the data on which this technique was demonstrated. N. Holschuh and E. King are acknowledged for their thoughtful and thorough reviews.  ... 
doi:10.1017/jog.2019.72 fatcat:dcbz43yimnbpbfh2fo5xjtnynm

High-resolution subglacial topography around Dome Fuji, Antarctica, based on ground-based radar surveys over 30 years

Shun Tsutaki, Shuji Fujita, Kenji Kawamura, Ayako Abe-Ouchi, Kotaro Fukui, Hideaki Motoyama, Yu Hoshina, Fumio Nakazawa, Takashi Obase, Hiroshi Ohno, Ikumi Oyabu, Fuyuki Saito (+2 others)
2022 The Cryosphere  
High-gain Yagi antennae were used to improve the antenna beam directivity, thereby significantly decreasing hyperbolic features of unfocused along-track diffraction hyperbolae in the echoes from mountainous  ...  For identifying suitable sites for drilling such ice, knowledge of the subglacial topography and englacial layering is crucial.  ...  However, many earlier radar sounding data have shown unfocused along-track diffraction hyperbolae at the ice-bedrock boundary, resulting in potential biases in the estimated ice thickness.  ... 
doi:10.5194/tc-16-2967-2022 fatcat:ifshzq5ekjcgxabhbslbxklcra

Radio-Echo Sounding Over Polar Ice Masses

R. G. Bingham, M. J. Siegert
2007 Journal of Environmental & Engineering Geophysics  
This article discusses the many scientific advances which have resulted from these efforts, and offers recommendations for future developments in terms of (i) reanalysis of existing data and (ii) suggestions  ...  support specific scientific studies, such as locating optimal sites for deep ice-coring, constraining the dimensions of subglacial lakes, or resolving internal layers for studies of ice sheet mass balance  ...  We thank the reviewers, Ginny Catania and Robert Jacobel, and the associate editor John Woodward, for comments which helped to improve the manuscript considerably.  ... 
doi:10.2113/jeeg12.1.47 fatcat:pjsb3xkrlzbwpn56zf3qojl5w4

Glacial geomorphology: Towards a convergence of glaciology and geomorphology

Robert G. Bingham, Edward C. King, Andrew M. Smith, Hamish D. Pritchard
2010 Progress in physical geography  
Focusing on the West Antarctic Ice Sheet, we review progress to date in achieving this goal, and the use of radar and seismic imaging to assess: (1) subglacial bed morphology and roughness; (2) subglacial  ...  bed reflectivity; and (3) subglacial sediment properties.  ...  However, the constitutive airborne radar tracks themselves, along which the bed has been sounded at high resolution (*20 m to 3 km), have been interrogated for smaller-scale variations in the shape or  ... 
doi:10.1177/0309133309360631 fatcat:7eo3ywluufclphlrtsdyh7hcfm

Radar stratigraphy connecting Lake Vostok and Dome C, East Antarctica, constrains the EPICA/DMC ice core time scale

M. G. P. Cavitte, D. D. Blankenship, D. A. Young, M. J. Siegert, E. Le Meur
2013 The Cryosphere Discussions  
</strong> New airborne radar sounding surveys at 60 MHz are used to trace internal layering between the Vostok and EPICA Dome C ice core sites.  ...  Along the radar transects, horizons belonging to the last glacial cycle are impacted by aeolian stratigraphic reworking that increases radar technique uncertainty for this interval.  ...  A., and Holt, J. W.: Along-track focusing of airborne radar sounding data from west Antarctica for improving basal 20 reflection analysis and layer detection, IEEE Geosci.  ... 
doi:10.5194/tcd-7-321-2013 fatcat:yzk5bkyn4jcbphikyi7dd7febq

Automated detection and characterization of Antarctic basal units using radar sounding data: demonstration in Institute Ice Stream, West Antarctica

Madison L. Goldberg, Dustin M. Schroeder, Davide Castelletti, Elisa Mantelli, Neil Ross, Martin J. Siegert
2020 Annals of Glaciology  
In order to enable improved characterization of these features, we develop and apply an algorithm that allows for the automatic detection of basal units.  ...  We use a tunable layer-optimized SAR processor to distinguish these structures from the bed, isochronous englacial layers and the ice-sheet surface, presenting a conceptual framework for the use of radio-echo  ...  We thank our reviewers for their thoughtful consideration of this article and for their helpful comments.  ... 
doi:10.1017/aog.2020.27 fatcat:ealwcyda4rch5fgmchscvvcbyq

The scientific legacy of NASA's Operation IceBridge

Joseph A. MacGregor, Linette N. Boisvert, Brooke Medley, Alek A. Petty, Jeremy P. Harbeck, Robin E. Bell, J. Bryan Blair, Edward Blanchard‐Wrigglesworth, Ellen M. Buckley, Michael S. Christoffersen, James. R. Cochran, Beáta M. Csathó (+34 others)
2021 Reviews of Geophysics  
OIB's primary goal was to use airborne laser altimetry to bridge the gap in fine-resolution elevation measurements of ice from space between the conclusion of NASA's Ice, Cloud, and land Elevation Satellite  ...  For land ice, OIB dramatically improved knowledge of interannual outlet-glacier variability, ice-sheet, and outlet-glacier thicknesses, snowfall rates on ice sheets, fjord and sub-ice-shelf bathymetry,  ...  Acknowledgments The authors thank the innumerable pilots, aircraft mechanics and safety  ... 
doi:10.1029/2020rg000712 fatcat:w7jvgqgqordr7ioao3cxgkheie

Bed topography of Jakobshavn Isbræ, Greenland, and Byrd Glacier, Antarctica

S. Gogineni, J.-B. Yan, J. Paden, C. Leuschen, J. Li, F. Rodriguez-Morales, D. Braaten, K. Purdon, Z. Wang, W. Liu, J. Gauch
2014 Journal of Glaciology  
We processed the data from each antenna-array element using synthetic aperture radar algorithms to improve radar sensitivity and reduce along-track surface clutter.  ...  This paper presents the bed topography of Jakobshavn Isbræ, Greenland, and Byrd Glacier, Antarctica, derived from sounding these glaciers with high-sensitivity radars.  ...  of Kansas.  ... 
doi:10.3189/2014jog14j129 fatcat:hmv6pd6rcfaszjlx2jo64plsde

Surface and basal boundary conditions at the Southern McMurdo and Ross Ice Shelves, Antarctica

2019 Journal of Glaciology  
We derive the surface and basal radar reflectance and backscatter coefficients of the southern McMurdo Ice Shelf (SMIS) and part of the nearby Ross Ice Shelf (RIS), Antarctica, from radar statistical reconnaissance  ...  This technique offers a simultaneous view of both the surface and basal boundary conditions to help investigate the ice-shelf stability, while its application to airborne data significantly improves coverage  ...  Our analysis focused on SMIS and a portion of the RIS.  ... 
doi:10.1017/jog.2019.44 fatcat:frcom2mhn5cvxogihn2hdtdyga

Low-frequency radar sounding of ice in East Antarctica and southern Greenland

J. Mouginot, E. Rignot, Y. Gim, D. Kirchner, E. Le Meur
2014 Annals of Glaciology  
Comparisons with higher-frequency radar data indicate an accuracy of ±55 m for ice-thickness measurements in Greenland and ±25 m in Antarctica.  ...  We discuss a decameter-wavelength airborne radar sounder, the Warm Ice Sounding Explorer (WISE), that provides ice thickness in areas where radar signal penetration at higher frequencies is expected to  ...  We thank the three reviewers, Steven Arcone, John Paden and Jie-Bang Yan, and the scientific editor, Sivaprasad Gogineni, for helpful and constructive comments on the manuscript.  ... 
doi:10.3189/2014aog67a089 fatcat:2zevzekdpzhkjmzljpj54c2iz4

Bed topography and subglacial landforms in the onset region of the Northeast Greenland Ice Stream

Steven Franke, Daniela Jansen, Tobias Binder, Nils Dörr, Veit Helm, John Paden, Daniel Steinhage, Olaf Eisen
2020 Annals of Glaciology  
We present a record of more than 8000 km of radar survey lines of multi-channel, ultra-wideband radio echo sounding data covering an area of 24 000 km2, centered on the drill site for the East Greenland  ...  Our new bed topography model will help to improve the basal boundary conditions of NEGIS prescribed for ice flow models and thus foster an improved understanding of the ice-dynamic setting.  ...  Steven Franke wrote the manuscript and conducted the main part of the data processing and analysis. Olaf Eisen and Daniela Jansen were PI and Co-I of the campaign and designed the study.  ... 
doi:10.1017/aog.2020.12 fatcat:a4cb7r2tdbhmrfuus7ssr25x7y
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