iSTAR-C: Dynamical control on the response of Pine Island Glacier
iSTAR-C:松岛冰川响应的动态控制
基本信息
- 批准号:NE/J005665/2
- 负责人:
- 金额:$ 5.02万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2013
- 资助国家:英国
- 起止时间:2013 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
It is expected that sea-level rise will impact coastal communities worldwide over the coming decades to centuries. In the UK, the vulnerability of coastal communities and assets is best characterised in terms of the likely frequency of the over-topping of sea-defences. For example, when they were built, the sea-defences for the city of London (including the Thames Barrier) were designed to protect London 1-in-1000 year flooding. A rise of 50 cm in global sea level will reduce this level of protection to 1-100 years, and a rise of 100 cm would reduce it to 1-in-10 years. Pine Island Glacier is one of five glaciers in West Antarctica that are currently contributing sea-level rise at a significant and accelerating rate. The portion of current affected by thinning contains sufficient ice to raise global sea-level by around 25 cm - its neighbours account for another 50 cm. Given the rate of ice-loss and the potential implications for sea-defence planning there is a clear requirement to understand and predict the future of Pine Island Glacier and its neighbours. However, as highlighted by the Intergovernmental Panel on Climate Change (2007) understanding the way that dynamic changes are transmitted through the glaciers draining ice sheets is so poorly understood that the IPCC believed it was the least well understood, and potentially the largest, contribution to sea-level rise in the coming century.ISTAR-C will directly address this lack of knowledge, by seeking to understand the processes that are responsible for transmitting the effect of thinning of the floating ice shelf, upstream such that thinning can now be seen on much of the trunk and tributaries of Pine Island Glacier.ISTAR-C will also use the most up-to-date methods available to measure the properties (rock-type and water-content) of the bed beneath at several locations on Pine Island Glacier to determine their influence on the propagation of thinning. We will test the hypothesis that it is these bed conditions are responsible for the fact that the tributaries of Pine Island Glacier appear to be thinning at different rates, which will give us a much better understanding on which to predict the future magnitudes of ice-thinning rates for the glacier. To achieve these objectives we will collect data from Pine Island Glacier during two field seasons. These will include precise measurement of variations in ice-flow from the ice-shelf up the glacier and into its tributaries. We will image the bed of the glacier using radar and seismic techniques, use satellite to measure the changing configuration of the glacier in areas that cannot be accessed on the ground. We will use the data we have collected to drive and verify a set of computer simulations of the dynamics of Pine Island Glacier. Each of these will test a particular aspect of the glacier flow, and allow us to test our current knowledge and hypotheses against real data. The models that emerge from the exercise will be demonstrably more reliable in simulating past changes on the glacier, and thus have reduced uncertainty in predicting the future evolution of such changes, and the consequential contribution to sea-level rise.Overall, this programme will deliver significant improvements in understanding of how glaciers in general interact with their beds, and very specific lessons about one of the most rapidly-changing and significant glaciers on the planet, Pine Island Glacier.
预计海平面上升将在未来几十年至几个世纪影响全世界的沿海社区。在英国,沿海社区和资产的脆弱性最能体现在海防设施可能发生漫顶的频率上。例如,伦敦市的海防(包括泰晤士河屏障)在建造时,是为了防止伦敦千年一遇的洪水。全球海平面上升50厘米将使这一保护水平降低到1-100年,上升100厘米将使其降低到1/10年。松岛冰川是南极洲西部五个冰川之一,目前正以显著和加速的速度造成海平面上升。受变薄影响的海流部分含有足够的冰,可使全球海平面上升约25厘米,其邻近地区又增加了50厘米。考虑到冰损失的速度和对海防规划的潜在影响,显然需要了解和预测松岛冰川及其邻近地区的未来。然而,正如政府间气候变化专门委员会(2007)所强调的那样,人们对动态变化通过冰川排空冰盖传播的方式知之甚少,以至于IPCC认为这是人们最不了解的,但可能是最大的。对下一个世纪海平面上升的贡献。ISTAR-C将直接解决这一知识缺乏问题,通过寻求理解负责传递浮冰架变薄效应的过程,因此,现在可以在松岛冰川的大部分主干和支流上看到变薄。ISTAR-C还将使用最先进的方法来测量这些特性。(岩石类型和含水量)的床下在松岛冰川的几个位置,以确定其对传播的影响。我们将检验这样一个假设,即正是这些河床条件导致了松岛冰川的支流似乎以不同的速率变薄,这将使我们更好地了解冰川未来冰变薄速率的大小。为了实现这些目标,我们将收集数据从松岛冰川在两个领域的季节。这将包括精确测量冰流的变化,从冰架上升到冰川并进入其支流。我们将使用雷达和地震技术对冰川床进行成像,使用卫星测量地面无法到达的地区冰川的变化结构。我们将使用我们收集到的数据来驱动和验证一组松岛冰川动态的计算机模拟。每一个都将测试冰川流动的一个特定方面,并使我们能够根据真实的数据来测试我们目前的知识和假设。从演习中产生的模型在模拟冰川过去的变化方面将更加可靠,从而减少了预测这种变化未来演变的不确定性,以及对海平面上升的影响。总体而言,这一计划将大大提高对冰川一般如何与其河床相互作用的理解,这是关于地球上变化最快、最重要的冰川之一,松岛冰川的非常具体的课程。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
The relationship between sticky spots and radar reflectivity beneath an active West Antarctic ice stream
活跃的西南极冰流下的粘点与雷达反射率之间的关系
- DOI:10.3189/2014aog67a052
- 发表时间:2017
- 期刊:
- 影响因子:2.9
- 作者:Ashmore D
- 通讯作者:Ashmore D
Diverse landscapes beneath Pine Island Glacier influence ice flow.
- DOI:10.1038/s41467-017-01597-y
- 发表时间:2017-11-20
- 期刊:
- 影响因子:16.6
- 作者:Bingham RG;Vaughan DG;King EC;Davies D;Cornford SL;Smith AM;Arthern RJ;Brisbourne AM;De Rydt J;Graham AGC;Spagnolo M;Marsh OJ;Shean DE
- 通讯作者:Shean DE
How dynamic are ice-stream beds?
冰河床的动态如何?
- DOI:10.5194/tc-12-1615-2018
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:Davies D
- 通讯作者:Davies D
High-resolution sub-ice-shelf seafloor records of twentieth century ungrounding and retreat of Pine Island Glacier, West Antarctica
南极洲西部松岛冰川二十世纪脱底和退缩的高分辨率冰架下海底记录
- DOI:10.1002/2017jf004311
- 发表时间:2017
- 期刊:
- 影响因子:0
- 作者:Davies D
- 通讯作者:Davies D
Glacier change along West Antarctica's Marie Byrd Land Sector and links to inter-decadal atmosphere-ocean variability
- DOI:10.5194/tc-12-2461-2018
- 发表时间:2018-07-26
- 期刊:
- 影响因子:5.2
- 作者:Christie, Frazer D. W.;Bingham, Robert G.;Tett, Simon F. B.
- 通讯作者:Tett, Simon F. B.
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Robert Bingham其他文献
In the wake of success
在成功之后
- DOI:
10.1038/424258a - 发表时间:
2003-07-17 - 期刊:
- 影响因子:48.500
- 作者:
Robert Bingham - 通讯作者:
Robert Bingham
Hybrid simulations of mini-magnetospheres in the laboratory
实验室微型磁层的混合模拟
- DOI:
10.1088/0741-3335/50/7/074017 - 发表时间:
2007 - 期刊:
- 影响因子:2.2
- 作者:
L. Gargaté;Robert Bingham;Ricardo Fonseca;R. Bamford;A. Thornton;K. Gibson;J. Bradford;Luis O. Silva - 通讯作者:
Luis O. Silva
The interaction of a flowing plasma with a dipole magnetic field: measurements and modelling of a diamagnetic cavity relevant to spacecraft protection
流动等离子体与偶极磁场的相互作用:与航天器保护相关的反磁腔的测量和建模
- DOI:
- 发表时间:
2008 - 期刊:
- 影响因子:0
- 作者:
R. Bamford;K. Gibson;A. Thornton;J. Bradford;Robert Bingham;L. Gargaté;Luis O. Silva;Ricardo Fonseca;M. Hapgood;Carol Norberg;T. Todd;R. Stamper - 通讯作者:
R. Stamper
Testing quantum mechanics in non-Minkowski space-time with high power lasers and 4th generation light sources
使用高功率激光器和第四代光源在非闵可夫斯基时空中测试量子力学
- DOI:
- 发表时间:
2012 - 期刊:
- 影响因子:4.6
- 作者:
B. Crowley;Robert Bingham;R. Evans;D. Gericke;O. Landen;C. Murphy;P. Norreys;Samuel Rose;T. Tschentscher;Chuangnan Wang;J. Wark;Gérald Grégori - 通讯作者:
Gérald Grégori
Cloud droplet growth
云滴生长
- DOI:
10.5170/cern-2001-007.115 - 发表时间:
2001 - 期刊:
- 影响因子:0
- 作者:
Robert Bingham - 通讯作者:
Robert Bingham
Robert Bingham的其他文献
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{{ truncateString('Robert Bingham', 18)}}的其他基金
Probing the Quantum Vacuum with High Power Laser and 4th Generation Light Sources in the Search for New Physics
用高功率激光和第四代光源探测量子真空,寻找新物理
- 批准号:
EP/X010791/1 - 财政年份:2023
- 资助金额:
$ 5.02万 - 项目类别:
Research Grant
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 - 财政年份:2018
- 资助金额:
$ 5.02万 - 项目类别:
Research Grant
Particle acceleration in magnetised shocks produced by laser and pulsed power facilities
激光和脉冲电源设施产生的磁化冲击中的粒子加速
- 批准号:
EP/N013298/1 - 财政年份:2016
- 资助金额:
$ 5.02万 - 项目类别:
Research Grant
iSTAR-C: Dynamical control on the response of Pine Island Glacier
iSTAR-C:松岛冰川响应的动态控制
- 批准号:
NE/J005665/1 - 财政年份:2013
- 资助金额:
$ 5.02万 - 项目类别:
Research Grant
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