Nirex Digital Geoscience Database (NDGD)

The Nirex Digital Geoscience Database (NDGD) holds extensive sets of data describing geoscientific, geographical, hydrogeological and logistical aspects of the Sellafield area in western Cumbria region. Some datasets comprise unmodified field data (as collected, measured or observed in the field). Others include values assessed during laboratory analysis or testing. Derived or interpolated information, resulting from modelling activity or the integration of several datasets, also accounts for a significant portion of the NDGD holding. The data consists of mainly borehole derived information including Borehole location and survey information, Sample location information, Logistics, Geological, geophysical (including borehole geophysical logs) and geotechnical borehole Geology datasets and Hydrological, hydrogeological and hydrochemical borehole datasets (though information from the down-hole monitoring strings and most groundwater related information is not held in the NDGD). The NDGD holds all of the raw and processed digital data arising from the Nirex (Nuclear Industry Radioactive Waste Executive) Sellafield Geological investigations boreholes drilled during their investigation programme into the suitability of Sellafield as a site for the disposal of intermediate and long-lived low level radioactive waste between 1989 and 1997. The ownership of Nirex (Nuclear Industry Radioactive Waste Executive) was transferred from the nuclear industry to the UK Government departments DEFRA and DTI in April 2005, and then to the UK's Nuclear Decommissioning Authority (NDA) in November 2006.奈里克斯数字地球科学数据库（Nirex Digital Geoscience Database，NDGD）收录了海量数据集，用于描述英国坎布里亚郡西部地区塞拉菲尔德地区的地球科学、地理学、水文地质学及后勤保障相关情况。部分数据集为未经修改的野外原始数据，即野外采集、测量或实地观测所得的原始数据；其余数据集则包含实验室分析与测试后得到的评估数值。通过建模活动或多数据集整合生成的衍生或插值数据，同样在NDGD的馆藏中占据显著份额。 该数据库的数据主要源自钻孔相关信息，涵盖钻孔位置与测量信息、样品位置信息、后勤保障数据、地质、地球物理（含钻孔地球物理测井数据）及岩土工程钻孔地质数据集，同时包含水文、水文地质与水文地球化学钻孔数据集——不过井下监测线缆相关数据以及多数地下水相关数据并未收录于NDGD中。 NDGD收录了1989年至1997年间，奈里克斯（Nuclear Industry Radioactive Waste Executive，核工业放射性废物执行署）在塞拉菲尔德地质调查项目中钻探的全部原始及经过处理的数字数据，该调查项目旨在评估塞拉菲尔德作为中长寿命低水平放射性废物处置场地的适宜性。 2005年4月，奈里克斯的所有权从核工业移交至英国政府环境、食品与农村事务部（DEFRA）与贸易工业部（DTI），并于2006年11月进一步移交至英国核退役管理局（Nuclear Decommissioning Authority，缩写NDA）。