An Investigation into the Stability and Dynamics of the Antarctic Peninsular Ice Sheet During the Last Deglaciation

末次冰消期南极半岛冰盖的稳定性和动力学研究

• 批准号: 2843365
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2843365
• 关键词: Investigation; into; Stability; Dynamics; Antarctic

The Antarctic Ice Sheet (AIS) has been thinning and retreating over the past 40 years promptingfears that anthropogenic climate change could initiate a rapid collapse of parts of the West AIS anda subsequent increase in global sea levels. Reliable predictions of the response of this major icesheet to global warming are necessary for effective sea level rise adaptation strategies to beformulated. However, present day observations only cover a very small fraction of its evolutionhistory. Palaeo reconstructions are able to offer information about the past dynamics andmorphology of the AIS, providing the longer term context required to fully understand its possibleresponses to climate change.This project will collect and analyse echo sounding data to produce seafloor morphology maps andacoustic and seismic profiles of the Antarctic Peninsula (AP) continental shelf. The identification ofglacio-marine landforms from these data will enable inferences to be made about the evolution ofthe Antarctic Peninsula Ice Sheet (APIS) since the Last Glacial Maximum. Conclusions drawn fromthese analyses will then be used to help constrain and validate numerical ice sheet models. Assuch, this project will contribute to the body of research required to improved our ability to adapt to,and mitigate, climate change.

在过去的40年中，南极冰盖（AIS）一直在变薄和退缩，这促使人们认为人为气候变化可能会引发西Ais Anda部分的迅速崩溃，随后全球海平面上升。对于有效的海平面上升适应策略，必须对这一主要的ICESHEET对全球变暖的反应进行可靠的预测。但是，当今的观察结果仅涵盖其进化史的一小部分。 Palaeo reconstructions are able to offer information about the past dynamics andmorphology of the AIS, providing the longer term context required to fully understand its possibleresponses to climate change.This project will collect and analyse echo sounding data to produce seafloor morphology maps andacoustic and seismic profiles of the Antarctic Peninsula (AP) continental shelf.从这些数据中鉴定glacio-Marine地貌将使自上次冰川最大值以来对南极半岛冰盖（API）的进化进行推断。从这些分析中得出的结论将用于帮助约束和验证数值冰盖模型。 Assuch，该项目将有助于提高我们适应和减轻气候变化的能力所需的研究体系。