Collaborative Research in IPY: Abrupt Environmental Change in the Larsen Ice Shelf System, a Multidisciplinary Approach -- Cryosphere and Oceans

IPY 合作研究：拉森冰架系统的突变环境变化，多学科方法——冰冻圈和海洋

• 批准号: 0732655
• 负责人: Ellen Mosley-Thompson
• 金额: $ 68.27万
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-05-01 至 2015-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0732655&HistoricalAwards=false
• 关键词: Collaborative; Research; IPY; Abrupt; Environmental; Collaborative; Research; IPY; Abrupt; Environmental

Scambos/0732921Pettit/0732738Gordon/0732651Truffer/0732602Mosley-Thompson/0732655Like no other region on Earth, the northern Antarctic Peninsula represents a spectacular natural laboratory of climate change and provides the opportunity to study the record of past climate and ecological shifts alongside the present-day changes in one of the most rapidly warming regions on Earth. This award supports the cryospheric and oceano-graphic components of an integrated multi-disciplinary program to address these rapid and fundamental changes now taking place in Antarctic Peninsula (AP). By making use of a marine research platform (the RV NB Palmer and on-board helicopters) and additional logistical support from the Argentine Antarctic program, the project will bring glaciologists, oceanographers, marine geologists and biologists together, working collaboratively to address fundamentally interdisciplinary questions regarding climate change. The project will include gathering a new, high-resolution paleoclimate record from the Bruce Plateau of Graham Land, and using it to compare Holocene- and possibly glacial-epoch climate to the modern period; investigating the stability of the remaining Larsen Ice Shelf and rapid post-breakup glacier response ? in particular, the roles of surface melt and ice-ocean interactions in the speed-up and retreat; observing the contribution of, and response of, oceanographic systems to ice shelf disintegration and ice-glacier interactions. Helicopter support on board will allow access to a wide range of glacial and geological areas of interest adjacent to the Larsen embayment. At these locations, long-term in situ glacial monitoring, isostatic uplift, and ice flow GPS sites will be established, and high-resolution ice core records will be obtained using previously tested lightweight drilling equipment. Long-term monitoring of deep water outflow will, for the first time, be integrated into changes in ice shelf extent and thickness, bottom water formation, and multi-level circulation by linking near-source observations to distal sites of concentrated outflow. The broader impacts of this international, multidisciplinary effort are that it will significantly advance our understanding of linkages amongst the earth's systems in the Polar Regions, and are proposed with international participation (UK, Spain, Belgium, Germany and Argentina) and interdisciplinary engagement in the true spirit of the International Polar Year (IPY). It will also provide a means of engaging and educating the public in virtually all aspects of polar science and the effects of ongoing climate change. The research team has a long record of involving undergraduates in research, educating high-performing graduate students, and providing innovative and engaging outreach products to the K-12 education and public media forums. Moreover, forging the new links both in science and international Antarctic programs will provide a continuing legacy, beyond IPY, of improved understanding and cooperation in Antarctica.

scambos/0732921Pettit/0732738Gordon/0732651Truffer/0732602Mosley-Thompson/0732655像地球上没有其他地区一样，北部的南极半岛可以在一个壮观的自然实验室变化，并与现有的途径变化，并与现有的旋转相关，并与以前的自然实验室相处，并与以前的自然实验室相处融合。地球上最快速变暖的地区。该奖项支持综合多学科计划的Cryopheric和Oceano图形组成部分，以解决南极半岛（AP）现在发生的这些快速而根本的变化。通过利用海洋研究平台（RV NB Palmer和板载直升机）和阿根廷南极计划的其他后勤支持，该项目将使冰川学家，海洋学家，海洋地质学家和生物学家聚集在一起，共同努力，从根本上解决有关气候变化的基本上跨学科问题。 该项目将包括从格雷厄姆土地的布鲁斯高原收集新的高分辨率古气候记录，并利用它将其与现代的全新世 - 可能是冰川 - 可能的气候进行比较；研究其余拉森冰架的稳定性和突破后冰川的快速反应？特别是，表面熔体和冰山相互作用在加速和撤退中的作用；观察海洋系统对冰架瓦解和冰冰淇淋相互作用的贡献和响应。 船上的直升机支撑物将允许进入Larsen胚胎附近的各种冰川和地质区域。在这些位置，将建立长期原位冰川监测，等静力隆升和冰流GPS位点，并使用先前测试的轻量级钻孔设备获得高分辨率的冰核记录。长期对深水流出的监测将首次通过将近源观测值与浓缩流出的远端位点联系起来，将冰架范围和厚度，底部水的形成和多层循环的变化整合在一起。 这项国际多学科努力的更广泛影响是，它将大大提高我们对极地地区地球系统之间联系的理解，并随着国际参与（英国，西班牙，比利时，德国和阿根廷）和跨学科参与而提出的，以国际极性年（IPY）的真实精神（IPY）进行跨学科参与。它还将提供一种在极地科学的几乎所有方面及其持续气候变化的影响的吸引和教育的方法。研究团队有很长的记录，使大学生参与研究，教育高性能的研究生，并为K-12教育和公共媒体论坛提供创新和引人入胜的外展产品。此外，在科学和国际南极计划中建立新的链接将提供不断的遗产，超越IPY，改善南极的理解与合作。