Siple Dome Glaciology and Ice Stream History 1994, 1996

The Siple Dome Glaciology and Ice Stream History project was part of Western Divide West Antarctic Ice Cores (WAISCORES), an NSF-funded project to understand the influence of the West Antarctic ice sheet on climate and sea level change. WAISCORES researchers acquired and analyzed ice cores from the Siple Dome, in the Siple Coast region, West Antarctica. This project supported glaciological studies of Siple Dome and its surroundings between Ice Streams C and D, via two major goals. First, it sought to characterize the dynamic environment and ice stratigraphy of Siple Dome and its surroundings, with the specific mission of assessing Siple Dome as a potential deep core site; and second, to determine whether the configuration of ice stream flow in the region has changed over time. Both goals are relevant to understanding the dynamics of the West Antarctic Ice Sheet (WAIS), its history, and potential future behavior. This project was a collaboration between Saint Olaf College, the University of Washington, and the National Snow and Ice Data Center at the University of Colorado. It included studies of satellite imagery and acquisition and analysis of field data from GPS, firn cores and snow pits, and ground-based ice-penetrating radar. Data in this collection were obtained during two Antarctic field seasons in 1994–95 and 1996–97. The data set is available via FTP as Microsoft Excel Spreadsheet (.xls) and ASCII tab delimited (.txt) files. Related notes are available as a Microsoft Word (.doc) or text (.txt) file. Related images and charts are available as Graphics Interchange Format (.gif) and Joint Photographic Experts Group (.jpg) files.西普尔冰穹(Siple Dome)冰盖学与冰流历史项目隶属于西分岔南极西部冰芯计划(Western Divide West Antarctic Ice Cores，简称WAISCORES)。该计划由美国国家科学基金会(National Science Foundation, NSF)资助，核心目标为阐明南极西部冰盖对气候及海平面变化的影响。WAISCORES项目的研究人员于南极西部西普尔海岸区域的西普尔冰穹，获取并分析了冰芯样品。 本项目针对C、D冰流之间的西普尔冰穹及其周边区域开展冰盖学研究，设立两大核心目标：其一，刻画西普尔冰穹及其周边的动力环境与冰层地层结构，重点评估西普尔冰穹作为深层冰芯钻探候选点位的可行性；其二，探明该区域冰流的流动格局是否随时间发生演变。两项目标均对理解南极西部冰盖(West Antarctic Ice Sheet, WAIS)的动力机制、演化历史与未来潜在变化具有关键意义。 本项目由圣奥拉夫学院、华盛顿大学与科罗拉多大学国家冰雪数据中心合作开展，研究内容涵盖卫星影像分析、野外GPS数据采集与分析、积雪芯与雪坑采样，以及地面冰穿透雷达探测。 本数据集依托1994-1995年与1996-1997年两次南极野外考察采集完成。数据集可通过文件传输协议(File Transfer Protocol, FTP)获取，格式包含Microsoft Excel电子表格(.xls)与ASCII制表符分隔文本文件(.txt)；相关研究说明文档可获取为Microsoft Word文档(.doc)或纯文本文件(.txt)；相关图像与图表则采用图形交换格式(Graphics Interchange Format, .gif)与联合图像专家组格式(Joint Photographic Experts Group, .jpg)存储。