Past and future changes in ice sheets and sea level

海平面变化是与当前和预期的全球变暖相关的主要危害之一。许多不同的过程将导致全球和区域尺度上的海平面变化。其中最重要的是未来冰盖的融化（格陵兰岛和南极）。在加拿大，以及在上一个冰河时期经历过冰川的其他高纬度地区，随着地球从冰的卸载中恢复，正在进行的陆地运动是另一个重要的贡献过程。例如，加拿大大西洋沿岸地区正在经历海平面上升加剧，因为由于这种影响，地面沉降。******拟议的研究将有助于我们了解过去和未来加拿大和其他地方的海平面变化，这是由于格陵兰冰盖的融化和与上一个冰河时期有关的持续的陆地运动。这将通过开发和测试，通过与观察结果的比较，模拟潜在过程的计算机模型来完成。有两个目标将指导这项研究：一个是专注于改进和测试用于模拟格陵兰冰盖过去和未来变化的计算机软件，另一个是通过在地球模型中添加三维结构来改进用于计算过去冰卸载影响的模型。改进后的模型将用于预测下个世纪及以后加拿大海岸附近的海平面变化。这些预测结果将被省政府、地方规划者和利益相关者用来评估未来海平面上升的风险。该研究项目将支持研究生和本科生的培训。

Sea-level change is one of the primary hazards associated with current and expected global warming. A number of different processes will contribute to sea-level change at global and regional scales. One of the most important is future melting of ice sheets (Greenland and Antarctic). In Canada, as well as other high latitude regions that experienced glaciation during the last Ice Age, ongoing land motion as the Earth recovers from unloading of ice is another important contributing process. For example, coastal areas of Atlantic Canada are experiencing enhanced sea-level rise because of land subsidence due to this effect. ******The proposed research will contribute to our understanding of past and future sea-level change in Canada and elsewhere due to melting of the Greenland ice sheet and ongoing land motion associated with the last Ice Age. This will be done by developing and testing, through comparison with observations, computer models that simulate the underlying processes. Two aims will guide the research: one that focuses on improving and testing computer software used to simulate past and future changes in the Greenland ice sheet, and one that will improve the models used to calculate the effects of past ice unloading by adding three-dimensional structure within the Earth model. The improved models will then be used to produce future projections of sea-level change around Canadian coasts for the next century and beyond. The resulting projections will be used by provincial governments, local planners and stakeholders to assess risk associated with future sea-level rise. The research program will support the training of students at graduate and undergraduate levels.