Collaborative Research: Developing an Antarctic Tephra Database for Interdisciplinary Paleoclimate Research (AntT)

合作研究：开发南极火山灰数据库用于跨学科古气候研究（AntT）

• 批准号: 1142069
• 负责人: Nelia Dunbar
• 金额: $ 16.33万
• 依托单位: New Mexico Institute of Mining and Technology
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-01 至 2017-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1142069&HistoricalAwards=false
• 关键词: Collaborative; Research; Developing; Antarctic; Tephra

Many key questions in climate research (e.g. relative timing of climate events in different geographic areas, climate-forcing mechanisms, natural threshold levels in the climate system) are dependent on accurate reconstructions of the temporal and spatial distribution of past rapid climate change events in continental, atmospheric, marine and polar realms. This collaborative interdisciplinary research project aims to consolidate, into a single user-friendly database, information about volcanic products detected in Antarctica. By consolidating information about volcanic sources, and physical and geochemical characteristics of volcanic products, this systematic data collection approach will improve the ability of researchers to identify volcanic ash, or tephra, from specific volcanic eruptions that may be spread over large areas in a geologically instantaneous amount of time. Development of this database will assist in the identification and cross-correlation of time intervals in various paleoclimate archives that contain volcanic layers from often unknown sources. The AntT project relies on a cyberinfrastructure framework developed in house through NSF funded CDI-Type I: CiiWork for data assimilation, interpretation and open distribution model. In addition to collection and integration of existing information about volcanic products, this project will focus on filling the information gaps about unique physico-chemical characteristics of very fine (3 micrometer) volcanic particles (cryptotephra) that are present in Antarctic ice cores. This component of research will involve improving analytical methodology for detecting cryptotephra layers in ice, and will train a new generation of scientists to apply an array of modern state?of?the-art instrumentation available to the project team. The recognized importance of tephra in establishing a chronological framework for volcanic and sedimentary successions has already resulted in the development of robust regional tephrochronological frameworks (e.g. Europe, Kamchatka, New Zealand, Western North America). The AntT project will provide this framework for Antarctic tephrochronology, as needed for precise correlation records between Antarctic ice cores (e.g. WAIS Divide, RICE, ITASE) and global paleoclimate archives. The results of AntT will be of particular significance to climatologists, paleoclimatologists, atmospheric chemists, geochemists, climate modelers, solar-terrestrial physicists, environmental statisticians, and policy makers for designing solutions to mitigate or cope with likely future impacts of climate change events on modern society.

气候研究中的许多关键问题（例如，不同地理区域中气候事件的相对时机，气候风格机制，气候系统中的自然阈值水平）取决于大陆，大气，海洋和极性领域中过去快速气候变化事件的时间和空间分布的准确重建。该协作跨学科研究项目旨在将有关在南极洲检测到的火山产品的信息巩固为单个用户友好的数据库。通过巩固有关火山源以及火山产品的物理和地球化学特征的信息，这种系统的数据收集方法将提高研究人员从可能在地质上瞬间的时间内散布在大面积的大面积的特定火山喷发中鉴定火山灰或Tephra的能力。该数据库的开发将有助于在各种古气候档案中识别和互相关的时间间隔，这些档案包含来自通常未知来源的火山层。 ANTT项目依赖于通过NSF资助的CDI-Type I：数据同化，解释和开放分配模型在内部开发的网络基础设施框架。除了收集和集成有关火山产品的信息外，该项目还将重点填补有关南极冰芯中存在的非常细（3微米）火山颗粒（Cryptotephra）的独特物理化学特征的信息差距。研究的这一组成部分将涉及改进分析方法，以检测ICE中的Cryptotephra层，并将训练新一代的科学家应用现代状态？ Tephra在建立火山和沉积继承的时间顺序框架方面的认可，已经导致了强大的区域Tephroanological框架的发展（例如，欧洲，北美北美，新西兰的Kamchatka）。 ANTT项目将根据需要为南极tephroanology提供此框架，以提供南极冰芯之间的精确相关记录（例如Wais Divide，Rice，Itase）和全球古气候档案。 ANTT的结果对气候学家，古气候学家，大气化学家，地球化学家，气候建模者，太阳事物物理学家，环境统计学家以及设计解决方案的解决方案来减轻或应对现代社会的未来影响可能对现代社会的未来影响可能对现代社会产生影响可能的未来影响。