abc9f747-53c4-0f38-e044-0003ba9b0d98 English dataset British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk pointOfContact 2026-04-12 MEDIN Discovery Metadata Standard Version 2.3.5 www.epsg.org 2005 revision urn:ogc:def:crs:EPSG::4326 OGP British Geological Survey (BGS) Geophysical Survey 1981/5: Eastern English Channel (20/08/1981 to 19/09/1981) 1981-09-19 publication BGS_CMD_REF195 British Geological Survey Report: Brett, CP. 1981. Operations Report on Project 81/05. A Geophysical Survey in the Eastern English Channel. (IGS Report No 121) There were two objectives of this project, the first being to complete the regional survey of the Dungeness-Boulogne sheet of the IGS 1:250000 map series. The second objective was to carry out a gravity and megnetic survey in the Caen and Rouen sheets, in order to complete the gravity coverage of the entire English Channel. A secondary objective was to run a few isolated gravity lines in Bournemouth Bay and off Dartmouth to fill in small gaps in the existing data. British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk custodian British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK offshoredata@bgs.ac.uk originator notPlanned NDGO0001 Geology GEMET - INSPIRE themes, version 1.0 2008-06-01 publication soil and sediment crust SeaVoX Vertical Co-ordinate Coverages (L131) 2010-05-18 revision Gravity Bathymetry and Elevation Magnetics Two-dimensional seismic reflection Side-scan sonar SeaDataNet Parameter Discovery Vocabulary (P021) 2011-07-27 revision otherRestrictions otherRestrictions otherRestrictions The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused. unrestricted use, copyright acknowledgement - Varying conditions apply grid 5 English geoscientificInformation BGS Gazetteer 2026-04-12 revision Caen BGS Gazetteer 2026-04-12 revision Portland BGS Gazetteer 2026-04-12 revision Thames Estuary BGS Gazetteer 2026-04-12 revision Lands End BGS Gazetteer 2026-04-12 revision Guernsey BGS Gazetteer 2026-04-12 revision East Anglia Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation Western Channel & Celtic Sea BGS Gazetteer 2026-04-12 revision Lizard BGS Gazetteer 2026-04-12 revision Rouen BGS Gazetteer 2026-04-12 revision Dungeness-Boulogne BGS Gazetteer 2026-04-12 revision Wight BGS Gazetteer 2026-04-12 revision Ostend BGS Gazetteer 2026-04-12 revision Flemish Bight The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation DOVER STRAIT Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation Eastern Channel Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation Southern North Sea The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation NORTH SEA The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation ENGLISH CHANNEL -4.1215 2.0393 49.3470 52.2888 1981-08-20 1981-09-19 British Geological Survey (BGS) +44 (0)131 667 1000 +44 (0)131 668 4140 The Lyell Centre, Research Avenue South Edinburgh EH14 4AP UK enquiries@bgs.ac.uk distributor http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1981/5 WWW:LINK-1.0-http--link BGS Offshore Geoindex GeoIndex allows users to search for information about BGS data collections covering the UK and other areas world wide. Access is free, the interface is easy to use, and it has been developed to enable users to check coverage of different types of data and find out some background information about the data. More detailed information can be obtained by further enquiry through the website. search dataset INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of unknown theme 2011 publication See the referenced specification false Geophysical equipment types used included: Airgun/Sleeve Gun, Deep Tow Boomer, Echo Sounder, Gravimeter, Magnetometer, Pinger, Sidescan Sonar and Sparker. The survey was undertaken by British Geological Survey. Navigation: Magnavox satellite navigation system integrated with MX610 doppler sonar and Arma Brown Mk I Mod 5 gyro compass. Dacca Mk 21 main chain receiver - optional integration with above. Equipment: Bolt 600B air gun, two guns with standard (1-40 cu.in.) range of chamber sizes, Krohn-hite bandpass filter, TSS Model 307 TVG amplifier and display on an EPC 3200 graphic recorder, Geomecanique hydrophone system. Atlas Deso 10 echo sounder with hull mounted transducers (33 and 210KHz) and Edig 10 digitiser unit. LaCoste & Romberg S75 air-sea gravity meter. World Wide land gravity meter for base ties. Varian proton magnetometer. Edo Western 248 pinger, 3.5 KHz, 10KW transducer in tow fish assembly. Used with TSS Model 302 swell filter, display on EPC graphic recorder. Huntec deep tow boomer system with remote contrilled winch, Krohn-hite bandpass filter and display on an EPC 3200 graphic recorder. EG&G sparker system, with up to 5kJ capability. One 3-element and one 9-element spark array, Krohn-hite bandpass filter, TSS Model 307 TVG amplifier, TSS Mobel 302 swell filter and display on an EPC 4600 or EPC 3200 graphic recorder, Teledyne hydrophone system. UDI AS350 dual channel side scan sonar system with catamaran tow fish, 2500ft tow cable and remote controlled winch. Display on an EPC 3200 graphic recorder and firing sequence controlled by the seismic control system. For more detailed information see the Cruise Report.