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

该奖项将支持新西兰南岛地貌记录样本的收集和分析。该项目的目标是解决关键问题，即是什么导致了南半球的冰期，以及观测到的气候变化与北半球的气候变化相比如何。参与的人员来自哥伦比亚大学拉蒙特-多尔蒂地球天文台和加州大学伯克利分校。研究人员将与地貌学家、模型师、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。将采用的方法是宇宙成因表面暴露测年、地貌测绘和冰川建模方面的最先进技术。过去冰川行为的新陆地记录，加上安全的年表，将提供对新西兰气候变化的洞察，以及它们与北半球和南大洋的对比情况。这样的比较将被用来测试冰河时代气候模型。了解冰河时代的原因是气候科学最重要的目标之一。这些结果将对地貌群落特别有用，因为它们将提供该地形和世界这一部分如何响应气候强迫的高分辨率历史。更广泛的影响包括研究生、本科生和高中助理的教育，以及初级科学家的发展。主要发现将在世界上最繁忙的国家公园之一向工作人员展示。新西兰的科学家将获得新的知识，他们正在开发高分辨率地图，可以用作将地貌和地质年代学数据存档的模板。这项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。这些结果将对地球科学的各种学科感兴趣，包括但仅限于全球气候变化、古海洋学、地质年代学、地貌学以及冰川和气候模型。

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.