Zobrazeno 1 - 10
of 451
pro vyhledávání: '"radio echo sounding"'
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 13, Pp n/a-n/a (2024)
Abstract Subglacial lakes have been mapped across Antarctica with two methods, radio‐echo sounding (RES) and ice‐surface deformation. At sites where both are coincident, these methods typically provide conflicting interpretations about the ice‐
Externí odkaz:
https://doaj.org/article/71b6fdc47bc9411d86fa779dab8856cd
Autor:
Steven Franke, Michael Wolovick, Reinhard Drews, Daniela Jansen, Kenichi Matsuoka, Paul D. Bons
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 6, Pp n/a-n/a (2024)
Abstract Understanding the material properties and physical conditions of basal ice is crucial for a comprehensive understanding of Antarctic ice‐sheet dynamics. Yet, direct data are sparse and difficult to acquire. Here, we employ ultra‐wideband
Externí odkaz:
https://doaj.org/article/18222c2ee292489b95abd256234d9e9a
Publikováno v:
Лëд и снег, Vol 63, Iss 2, Pp 174-187 (2023)
The glacier surge at Vavilov Ice Cap, Severnaya Zemlya, Russia (79°18′ N, 94°40′ E) began as early as the mid-1960s with a slow advance of its margin in the western part. Since 2012, the advance switched to the phase of catastrophic movement, w
Externí odkaz:
https://doaj.org/article/4793c85ba60d4fde97b132b2e0d424a1
Publikováno v:
Journal of Glaciology, Vol 69, Pp 566-576 (2023)
Ice streams are warmed by shear strain, both vertical shear near the bed and lateral shear at the margins. Warm ice deforms more easily, establishing a positive feedback loop in an ice stream where fast flow leads to warm ice and then to even faster
Externí odkaz:
https://doaj.org/article/683b049a77ce49d68e1aeb41d02ba282
Autor:
T. J. Fudge, Benjamin H. Hills, Annika N. Horlings, Nicholas Holschuh, John Erich Christian, Lindsey Davidge, Andrew Hoffman, Gemma K. O'Connor, Knut Christianson, Eric J. Steig
Publikováno v:
Journal of Glaciology, Vol 69, Pp 538-550 (2023)
Hercules Dome, Antarctica, has long been identified as a prospective deep ice core site due to the undisturbed internal layering, climatic setting and potential to obtain proxy records from the Last Interglacial (LIG) period when the West Antarctic i
Externí odkaz:
https://doaj.org/article/4ca32c89cd184c8698db619daf5974dd
Publikováno v:
Лëд и снег, Vol 63, Iss 1, Pp 5-16 (2023)
Small glaciers of the Polar Urals are at the limits of their existence. Their state and changes serve as an important natural indicator of modern climatic changes. In 2019 and 2021, we performed ground-based radar studies of one of these glaciers, th
Externí odkaz:
https://doaj.org/article/ad773e572000447b9bbfa52c3ee38fb1
Autor:
J. A. Aguilar, P. Allison, J. J. Beatty, D. Besson, A. Bishop, O. Botner, S. Bouma, S. Buitink, M. Cataldo, B. A. Clark, Z. Curtis-Ginsberg, A. Connolly, P. Dasgupta, S. de Kockere, K. D. de Vries, C. Deaconu, M. A. DuVernois, C. Glaser, A. Hallgren, S. Hallmann, J. C. Hanson, B. Hendricks, C. Hornhuber, K. Hughes, A. Karle, J. L. Kelley, I. Kravchenko, R. Krebs, R. Lahmann, U. Latif, J. Mammo, Z. S. Meyers, K. Michaels, K. Mulrey, A. Nelles, A. Novikov, A. Nozdrina, E. Oberla, B. Oeyen, Y. Pan, H. Pandya, I. Plaisier, N. Punsuebsay, L. Pyras, D. Ryckbosch, O. Scholten, D. Seckel, M. F. H. Seikh, D. Smith, D. Southall, J. Torres, S. Toscano, D. Tosi, D. J. Van Den Broeck, N. van Eijndhoven, A. G. Vieregg, C. Welling, D. R. Williams, S. Wissel, R. Young, A. Zink
Publikováno v:
Journal of Glaciology, Vol 68, Pp 1234-1242 (2022)
Over the last 25 years, radiowave detection of neutrino-generated signals, using cold polar ice as the neutrino target, has emerged as perhaps the most promising technique for detection of extragalactic ultra-high energy neutrinos (corresponding to n
Externí odkaz:
https://doaj.org/article/0eb6f025f05142b08a3356a8bbd5578b
Publikováno v:
Annals of Glaciology, Vol 63, Pp 8-12 (2022)
Over the past 70 years, many different components of the cryosphere have been imaged with a variety of radar systems using increasingly sophisticated processing techniques. These systems use various pulse lengths, signal frequencies and, in some case
Externí odkaz:
https://doaj.org/article/71d6cbcb800c442d8d89e168f1d6ed3f
Autor:
Dustin M. Schroeder
Publikováno v:
Annals of Glaciology, Vol 63, Pp 13-17 (2022)
Ice-penetrating radar sounding is a powerful geophysical tool for studying terrestrial and planetary ice with a rich glaciological heritage reaching back over half a century. Recent years have also seen rapid growth in both the radioglaciological com
Externí odkaz:
https://doaj.org/article/f75f1713f42b478486b30cd37b8b8cd8
Autor:
Dustin M. Schroeder, Anna L. Broome, Annabel Conger, Acacia Lynch, Emma J. Mackie, Angelo Tarzona
Publikováno v:
Journal of Glaciology, Vol 68, Pp 733-740 (2022)
The earliest airborne geophysical campaigns over Antarctica and Greenland in the 1960s and 1970s collected ice penetrating radar data on 35 mm optical film. Early subglacial topographic and englacial stratigraphic analyses of these data were foundati
Externí odkaz:
https://doaj.org/article/305b17e893964e338fead501fe5c6c0f