Testing and Improving Models of Ice Sheet and Sea Level Evolution

测试和改进冰盖和海平面演变模型

• 批准号: 355664-2013
• 负责人: Milne, Glenn
• 金额: $ 2.91万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=549798
• 关键词: Testing; Improving; Models; Ice; Sheet

Sea-level rise is one of the primary hazards associated with current and expected global warming. There are two processes that will dominate this change at global scales: melting of land ice (Greenland and Antarctic ice sheets, smaller glaciers and ice caps) and warming of the oceans (resulting in an expansion in ocean water volume). In Canada, as well as other high latitude regions that experienced glaciation during the last Ice Age, on-going land motion in response to the melting of ancient ice sheets is also a significant contributor to present day sea-level change. For example, coastal areas of Atlantic Canada are experiencing enhanced sea level rise (relative to the global mean) because of land subsidence due to the melting of ice between 20,000-7,000 years before present.

海平面上升是与当前和预期的全球变暖有关的主要危害之一。有两个过程将在全球范围内主导这种变化：陆地冰（格陵兰和南极冰盖，较小的冰川和冰盖）的融化和海洋变暖（导致海洋水量扩大）。在加拿大，以及其他在最后一个冰河时代经历过冰川作用的高纬度地区，由于古代冰盖融化而产生的持续陆地运动也是导致现今海平面变化的重要因素。例如，加拿大大西洋沿岸地区正在经历海平面上升加剧（相对于全球平均水平），这是由于20，000 - 7，000年前冰融化造成的地面沉降。