Establishing an Integrated Multibeam and Geophysical Database for the Antarctic

该合同由极地项目办公室的南极地质和地球物理项目提供，支持南大洋和南极洲（大约南纬45度）综合多波束和地球物理数据库的建设、数量和运行。我们的工作重点是将帕尔默号上收集的多波束测深数据作为科学和教育资源提供给社会。该数据库将与现有的NSF支持的RIDGE多波束数据库非常相似，并将建立在该项目的开发努力之上。一个PostgreSQL关系数据库服务器将管理这个数据库。它将通过两个基于网络的界面进行访问：在浏览器窗口中提供简单的点、点击和文本输入选项的页面；以及一个基于地图的Java applet接口，该接口提供了浏览数据库和与数据库交互的能力。该数据库的主要吸引力将是访问来自R/V Palmer多波束数据的地图、网格和编辑过的原始数据文件。这些数据还没有被综合起来，通常只有在收集数据的探险队上的一小群研究人员才能获得。多波束数据在地球物理数据类型中可能是独一无二的：它们以精美的细节揭示了一个奇怪的、隐藏的景观；它们包括有关海底发生的地质过程的宝贵资料；它们对科学家为他们的特定研究准备碱基图很有用，也可以作为跨学科工作的综合框架。这些数据是美国国家科学基金会花费了相当大的代价获得的，是南极计划遗产的重要组成部分，也是未来研究活动的宝贵资源。除了浏览和下载多波束数据产品外，用户还可以与数据进行动态交互。将提供生成水深剖面和等高线地图、数字化和下载点和线以及定制地图显示的能力。与多波束工作并行并相关联的是，将开发一个原型数据库，用于最近从沃斯托克湖收集的冰层穿透雷达数据填充的海底剖面数据。来自ANTOSTRAT汇编和科罗拉多州国家地球物理数据中心（NGDC）的可用地震反射剖面也将包括在内。地图浏览器将提供访问Lamont-Doherty和NGDC的所有船舶获取的轨道地球物理数据，用于南极数字重力合成和其他现有的底图汇编（例如BEDMAP）和样本数据收集（例如ODP钻孔数据，RidgePetDB）。对所有这些数据类型的访问将通过与多波束数据相同的地图浏览器提供，这将允许用户从单个网站探索不同的数据集。根据该奖项将开发的多波束和地球物理数据综合预计将为对南极科学和基本地球过程感兴趣的广泛的学术和非专业用户大大扩大这些未充分利用且往往难以找到的资源的效用。

This award, provided by the Antarctic Geology and Geophysics Program of the Office of Polar Programs, supports the construction, population, and operation of an integrated multibeam and geophysical database for the Southern Ocean and Antarctica (out to roughly the latitude of 45 S). The focus of our efforts will be to make multibeam bathymetry data collected aboard the R/V Palmer available to the community as a resource for science and education. The database will have strong similarities to the existing NSF supported RIDGE Multibeam database and will build upon that project's development efforts. A PostgreSQL relational database server will manage the database. It will be accessible through two web-based interfaces: pages that present a choice of a simple point, click and text-field entry in a browser window; and a map-based Java applet interface that provides the capability to browse and interact with the database.The main attraction of the database will be access to maps, grids, and edited raw data files from the R/V Palmer multibeam data. These data have not yet been brought together in a synthesis and are typically only accessible to the small group of researchers aboard the expedition during which the data were collected. Multibeam data are perhaps unique among the geophysical data types: they reveal in exquisite detail a strange, hidden landscape; they include valuable information on geological processes occurring at the sea floor; and they are useful to scientists preparing base-maps for their particular studies and as an integrating framework for interdisciplinary work. These data are acquired at considerable cost to the NSF and represent an important part of the legacy of the Antarctic program as well as a valuable resource for future research activities. In addition to browsing and downloading multibeam data products, users will be able to interact dynamically with the data. Capabilities will be provided for generating bathymetric profiles and contour maps, for digitizing and downloading points and lines, and for customizing the map display.In parallel and linked to the multibeam effort, a prototype database will be developed for sub-bottom profile data populated by recently collected ice-penetrating radar data from Lake Vostok. Available seismic reflection profiles from the ANTOSTRAT compilation and from the National Geophysical Data Center (NGDC) in Colorado will also be included. The map browser will provide access to all the ship-acquired trackline geophysical holdings at Lamont-Doherty and the NGDC, for the Antarctic Digital Gravity Synthesis and for other existing basemap compilations (e.g. BEDMAP) and sample data collections (e.g. ODP borehole data, RidgePetDB). Access to all these data types will be provided through the same map browser as the multibeam data, which will allow the user to explore diverse data sets from a single web site.The multibeam and geophysical data synthesis that will be developed under this award is expected to significantly expand the utility of these under-utilized and often hard to find resources for a broad range of users, both academic and lay, who are interested in Antarctic science and fundamental earth processes.