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

气候研究中的许多关键问题（如不同地理区域气候事件的相对时间、气候强迫机制、气候系统的自然阈值水平）依赖于对过去大陆、大气、海洋和极地领域快速气候变化事件时空分布的精确重建。这一跨学科合作研究项目的目的是将在南极洲探测到的火山产物信息整合到一个单一的用户友好数据库中。通过整合有关火山来源的信息，以及火山产物的物理和地球化学特征，这种系统的数据收集方法将提高研究人员识别火山灰或火山灰的能力，这些火山灰或火山灰来自特定的火山爆发，这些火山爆发可能在地质瞬时的时间内大面积蔓延。该数据库的开发将有助于识别和相互关联各种古气候档案中的时间间隔，这些档案中包含来自通常未知来源的火山层。AntT项目依赖于由NSF资助的CDI-Type - I: CiiWork内部开发的网络基础设施框架，用于数据同化、解释和开放分发模型。除了收集和整合有关火山产物的现有信息外，该项目还将重点填补南极冰芯中存在的非常细（3微米）火山颗粒（隐球）独特物理化学特征的信息空白。研究的这一部分将涉及改进检测冰中隐球菌层的分析方法，并将培训新一代科学家应用一系列现代状态？项目团队可用的最先进的仪器。由于认识到泥层在建立火山和沉积序列的年代学框架方面的重要性，已经形成了强有力的区域泥层年代学框架（例如欧洲、堪察加半岛、新西兰、北美西部）。AntT项目将为南极温度年代学提供这一框架，以获得南极冰芯（如WAIS Divide、RICE、ITASE）与全球古气候档案之间的精确对比记录。AntT的结果对于气候学家、古气候学家、大气化学家、地球化学家、气候建模学家、日地物理学家、环境统计学家和政策制定者设计解决方案以减轻或应对气候变化事件对现代社会未来可能产生的影响具有特别重要的意义。

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.