NSFPLR-NERC: GHOST (Geophysical Habitat of Subglacial Thwaites)

NSFPLR-NERC：GHOST（冰下思韦特斯地球物理栖息地）

• 批准号: NE/S006613/1
• 负责人: Robert Bingham
• 金额: $ 29.25万
• 依托单位: University of Edinburgh
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2018
• 资助国家: 英国
• 起止时间: 2018 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FS006613%2F1
• 关键词: NSFPLR; NERC; GHOST; Geophysical; Habitat

Costs of rapid sea level rise globally to infrastructure (houses, roads, and farms, etc.) is likely to be large. A possible source of water for sea level rise is the West Antarctic Ice Sheet, and Thwaites Glacier in particular. Ice sheets and glaciers contain vast quantities of water (in the form of ice) that is continually shed to the ocean, and continually replenished by snowfall (from water that evaporates from the oceans). If the amount of ice that Thwaites Glacier loses to the ocean over the next decades is much greater than the amount it receives as snowfall, then sea level in all the world's oceans would rise, possibly as much as a meter (approximately 3 feet). In order to estimate how likely such a catastrophic scenario would be, we need to better understand the surface over which Thwaites Glacier slides. If we can better characterize that layer ("is to smooth? Is it rough? Is it soft? Is it hard?"), then computer models of Thwaites would be much improved and we can make better projections of the amount of ice that Thwaites Glacier would shed to the ocean.

全球快速海平面上升到基础设施（房屋，道路和农场等）的成本可能很大。海平面上升的水源是南极西部冰盖，尤其是Thwaites冰川。冰盖和冰川含有大量的水（以冰的形式）不断脱落到海洋上，并不断地被降雪（从海洋蒸发的水）补充。如果接下来的几十年中冰川在海洋中输给海洋的冰量远大于降雪所获得的冰，那么世界上所有海洋的海平面就会上升，可能会高达一米（大约3英尺）。为了估计这种灾难性情况的可能性，我们需要更好地了解Thwait冰川滑梯的表面。如果我们能更好地描述该层（“很光滑？它是粗糙的？它柔软吗？它很难吗？”），那么Thwaites的计算机模型将得到很大改善，我们可以更好地预测Thwaites冰川会流向海洋的冰量。

项目成果

Interpretation of topography and bed properties beneath Thwaites Glacier, West Antarctica using seismic reflection methods

• DOI: 10.1016/j.epsl.2020.116543
• 发表时间: 2020-11-15
• 期刊: EARTH AND PLANETARY SCIENCE LETTERS
• 影响因子: 5.3
• 作者: Clyne, Elisabeth R.;Anandakrishnan, Sridhar;Voigt, Donald E.
• 通讯作者: Voigt, Donald E.

Inter-decadal climate variability induces differential ice response along Pacific-facing West Antarctica.

年代际气候变化导致面向太平洋的西南极洲冰层响应存在差异。

• DOI: 10.17863/cam.94021
• 发表时间: 2023
• 作者: Christie F

A new volcanic province: an inventory of subglacial volcanoes in West Antarctica

• DOI: 10.1144/sp461.7
• 发表时间: 2018-01-01
• 期刊: EXPLORATION OF SUBSURFACE ANTARCTICA: UNCOVERING PAST CHANGES AND MODERN PROCESSES
• 作者: de Vries, Maximillian van Wyk;Bingham, Robert G.;Hein, Andrew S.
• 通讯作者: Hein, Andrew S.

Ice-flow perturbation analysis: a method to estimate ice-sheet bed topography and conditions from surface datasets

• DOI: 10.1017/jog.2023.50
• 发表时间: 2023-08
• 期刊: Journal of Glaciology
• 影响因子: 3.4
• 作者: Helen Ockenden;R. Bingham;Andrew Curtis;D. Goldberg

Inverting ice surface elevation and velocity for bed topography and slipperiness beneath Thwaites Glacier

反演冰面海拔和速度以了解思韦茨冰川下方的河床地形和光滑度

• DOI: 10.5194/tc-16-3867-2022
• 发表时间: 2022
• 期刊: The Cryosphere
• 作者: Ockenden H