Over 22000 km of corrected aeromagnetic total intensity data from various surveys in offshore petroleum areas in UK Continental Shelf and overseas collected to assist directional drilling. Line separation is 2 km and flight altitude is 80 m above sea level and navigation is by GPS (Global Positioning System). Some surveys have been bought or commissioned on an exclusive basis by BGS and can be used without further ado, others require permission sought from the aeromagnetic survey company or end-client.
The Geophysical Borehole Log index provides details of hardcopy geophysical logs known to BGS. The index provides the storage location of the logs and details of the format they are available in, eg. paper, at a scale of 1:200. The data is updated when new data becomes available. Contains most geophysically logged bores known to BGS National Geological Records Centre. Scattered distribution of boreholes, locally dense coverage, few logs from Scotland.
The Geophysical Borehole Log index provides details of all digital geophysical logs available to BGS. The database provides the borehole metadata related to logging and metadata for the logging itself and log data stored in a proprietary hierarchical database system (PETRIS RECALL). Contains most digital geophysically logged bores known to BGS National Geological Records Centre. Scattered distribution of boreholes, locally dense coverage, relatively few logs from Scotland & Central Wales, increasing data density on UK continental Shelf.