Zobrazeno 1 - 10
of 84
pro vyhledávání: '"Stephen J Livingstone"'
Autor:
David Stevens, Jeremy C. Ely, Stephen J. Livingstone, Chris D. Clark, Frances E. G. Butcher, Ian Hewitt
Publikováno v:
Journal of Glaciology, Vol 69, Pp 397-409 (2023)
We use a mathematical model to investigate the effect of basal topography and ice surface slope on transport and deposition of sediment within a water-filled subglacial channel. In our model, three zones of different behaviour occur. In the zone furt
Externí odkaz:
https://doaj.org/article/c59b7032f5364ab5af694bd8238cb5d2
Publikováno v:
Journal of Maps, Pp 1-15 (2022)
Subglacial drainage systems are crucial elements of glaciers and ice sheets because they modulate ice flow velocity. However, logistical challenges of measuring subglacial processes beneath contemporary ice and natural limitations in long-term monito
Externí odkaz:
https://doaj.org/article/0e9feb4fcf7242b09effb9a28eefd7f4
Autor:
Yao Lu, Kang Yang, Xin Lu, Laurence C. Smith, Andrew J. Sole, Stephen J. Livingstone, Xavier Fettweis, Manchun Li
Publikováno v:
Journal of Maps, Vol 16, Iss 2, Pp 834-846 (2020)
The Devon Ice Cap (DIC) is one of the largest ice masses in the Canadian Arctic. Each summer, extensive supraglacial river networks develop on the DIC surface and route large volumes of meltwater from ice caps to the ocean. Mapping their extent and u
Externí odkaz:
https://doaj.org/article/24695c1dc7d84df88b3130147b811be2
Autor:
Peter A. Tuckett, Jeremy C. Ely, Andrew J. Sole, Stephen J. Livingstone, Benjamin J. Davison, J. Melchior van Wessem
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-4 (2020)
Externí odkaz:
https://doaj.org/article/eb6d58ae8a0e45118d24e463f596ae0a
Autor:
Peter A. Tuckett, Jeremy C. Ely, Andrew J. Sole, Stephen J. Livingstone, Benjamin J. Davison, J. Melchior van Wessem, Joshua Howard
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-8 (2019)
Surface meltwater is known to influence the dynamics of some glaciers and the Greenland ice sheet. Here, the authors have identified the first examples of the drainage of surface meltwater to the bed of outlet glaciers on the Antarctic Peninsula that
Externí odkaz:
https://doaj.org/article/025e39347df94f6e83603b734b0d61d3
Publikováno v:
The Cryosphere. 17:1775-1786
Hydrologically active subglacial lakes can drain large volumes of water and sediment along subglacial pathways, affecting the motion and mass balance of ice masses and impacting downstream sediment dynamics. To date, only eight active lakes have been
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be51461fffab917eace191075f9e63b2
https://doi.org/10.5194/tc-17-1775-2023
https://doi.org/10.5194/tc-17-1775-2023
Publikováno v:
Journal of Maps, Vol 13, Iss 2, Pp 153-164 (2017)
This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shoreli
Externí odkaz:
https://doaj.org/article/166cd2b4fd2a41058a88e0ca84991dfd
Autor:
Stephen J. Livingstone, Daniel J. Utting, Alastair Ruffell, Chris D. Clark, Steven Pawley, Nigel Atkinson, Andrew C. Fowler
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-9 (2016)
Our understanding of subglacial lake drainage events is limited by a lack of direct observations. Here, the authors use ground penetrating radar to identify a relict subglacial lake and infer drainage mechanisms based on geomorphological features.
Externí odkaz:
https://doaj.org/article/30916183aa5b4b7fbc3d1071f2810cfa
Publikováno v:
Frontiers in Earth Science, Vol 6 (2018)
Ice flow can transfer variations in basal topography and basal slipperiness to the ice surface. Recent developments in this theory have made it possible to conduct numerical experiments to predict mesoscale surface topographical undulations and surfa
Externí odkaz:
https://doaj.org/article/24644ab4de06461cb456b611389e0979
Publikováno v:
Arctic, Antarctic, and Alpine Research, Vol 50, Iss 1 (2018)
Ice thickness measurements near the margin of the Greenland Ice Sheet (GrIS) are relatively sparse, presenting issues for modeling ice-flow dynamics, ice-sheet change, and subglacial hydrology. We acquired near-margin ice thickness data at Leverett G
Externí odkaz:
https://doaj.org/article/9e3046bef8614afbbb95a94aa2461612