Collaborative Research: A Southern Mid-Latitude Perspective on the Last Ice Age Based on Be-10 Moraine Chronologies

该奖项将支持收集和分析新西兰南岛地貌记录的样本。该项目的目标是解决导致南半球冰河期的关键问题，以及观测到的气候变化与北方气候变化的比较。参与人员来自哥伦比亚大学和加州伯克利大学的拉蒙特-多尔蒂地球观测站。研究人员将与地貌学家，建模师，生态学家以及冰川和气候专家合作，其中包括新西兰的科学家。所采用的方法是宇宙成因地表暴露年代测定、地貌测绘和冰川建模方面的最新技术。过去冰川行为的新陆地记录，与安全的年表联系在一起，将提供对新西兰气候变化的深入了解，以及如何将它们与北方和南大洋的气候变化进行比较。这种比较将被用来测试冰河时代气候的模型。了解冰河期的成因是气候科学最重要的目标之一。这些结果对地貌界特别有用，因为它们将提供一个高分辨率的历史，说明这一地形和世界这一部分如何对气候强迫作出反应。更广泛的影响包括研究生、本科生和高中助教的教育，以及初级科学家的发展。主要的发现将在世界上最繁忙的国家公园之一向工作人员展示。新西兰的科学家将积累新的知识，他们正在制作高分辨率地图，可用作地貌和地质年代数据存档的模板。该研究涉及研究人员在职业生涯开始时的国际合作，因此将促进长期关系。结果将是各种地球科学学科的兴趣，包括但不限于全球气候变化，古海洋学，地质年代学，地貌学，冰川和气候建模。

This award will support the collection and analyses of samples from the geomorphic record of South Island, New Zealand. The project objectives tackle the critical problem of what causes ice ages in the Southern Hemisphere, and how the observed climate changes compare with those in the Northern Hemisphere. Personnel involved come from the Lamont-Doherty Earth Observatory of Columbia University and University of California Berkeley. The investigators will work in collaboration with geomorphologists, modelers, ecologists, and glacial and climate experts, which includes scientists in New Zealand. The methods to be employed are state-of-the-art techniques in cosmogenic surface exposure dating, geomorphic mapping, and glacial modeling. The new terrestrial record of past glacial behavior, tied with secure chronologies, will provide insight into climate changes in the New Zealand and how they compare with those in the Northern Hemisphere and Southern Ocean. Such comparisons will be used to test models of ice-age climate. Understanding the causes of ice ages is among the most important goals in climate science. The results will be particularly useful to the geomorphic community, as they will provide a high-resolution history of how this terrain and this part of the world responds to climate forcing. Broader impacts include the education of graduate students, undergraduate and high school assistants, and development of junior scientists. Major findings will be presented to the staff at one of the busiest national parks in the world. The new knowledge will be garnered with scientists in New Zealand, who are developing high-resolution maps that can be used as a template to archive geomorphic and geochronologic data. The research involves international collaborations between researchers towards the start of their careers and hence will facilitate long-term relations. The results will be of interest to a variety of Earth Science disciplines including but limited to global climate change, paleoceanography, geochronology, geomorphology, and glacial and climate modeling.