High-resolution, airborne magnetic, radiometric, VLF survey data (over the north Midlands of England into the Welsh Borderland) is provided as a web map service (WMS). Survey flying for the collaborative BGS and World Geoscience Corporation Ltd (WGC) high-resolution geophysical and environmental survey was completed in early September 1998. The data comprises multichannel gamma ray spectrometer, magnetometer and dual frequency VLF-EM.
Flight-line spacing was 400 m with tie lines at 1200 m. The total area surveyed is some 14 000 km2. Flight-line orientations are west – east over the western survey area and south-west – north-east over the eastern area. Ground clearance was maintained at 90 m in rural areas, increasing to about 240 m in built-up zones.
Enter this address into your WMS client: https://map.bgs.ac.uk/arcgis/services/GeoIndex_Onshore/geophysics_midlands_hires/MapServer/WmsServer
The service supports the British National Grid and lat/long WGS84 coordinate systems and the data is visible when zoomed in between 1:100 000 and 1:25 000 scale.
Example WMS requests (versions 1.3.0 and 1.1.1 supported)
The GetCapabilities response has a full list of layers in this service.
Radiometric data (Total Count in cps) WMS 1.3.0 requests in British National Grid (BNG)
WMS GetMap request
Magnetic data. Derived Analytic Signal (AS) of the Total Magnetic Intensity (TMI) WMS 1.1.1 requests in Lat/Long WGS84 (WGS84)
|WMS GetMap request
Can’t use the WMS?
Try the GeoIndex viewer if you are unable to use a WMS.
The data provided to view in this WMS is also available as a free download.
This data is delivered under the terms of the Open Government Licence, subject to the following acknowledgement accompanying the reproduced BGS materials: ‘Contains British Geological Survey materials © UKRI [year]’. Contact us if you create something new and innovative that could benefit others.
The BGS provides no warranty as to the quality, accuracy or completeness of this free map data or the medium on which it is supplied. This includes any warranty as to the continued provision of material or that the material taken from this site is compatible with your computer system and/or any other data with which the material is to be used.
Please be aware that the BGS may make changes to this service. This will include, but is not limited to, the level of attribution seen for each type of geology, and changes to zoom thresholds.