British Geological Survey (BGS) Geophysical Survey 1981/6: Bristol Channel & SW Approaches (21/09/1981 to 29/09/1981)
Report: Brett, CP. 1981. Operations report on Project 81/06. A Regional Geophysical Survey in the Bristol Channel and South West Approaches. (IGS Report No 122) The objectives of this survey were to fill in gaps in the previously surveyed areas in the Bristol Channel and Nymphe Bank sheets of the IGS 1:250000 map series.
dataset
BGS Offshore Geoindex
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British Geological Survey
:
BGS_CMD_REF196
English
Geoscientific information
GEMET - INSPIRE themes, version 1.0:
SeaVoX Vertical Co-ordinate Coverages (L131):
SeaDataNet Parameter Discovery Vocabulary (P021):
Free:
-6.6419,
50.7126,
-3.3881,
51.6947
Haig Fras, Lands End, Nymphe Bank, Lundy, Bristol Channel, Western Channel & Celtic Sea, BRISTOL CHANNEL, CELTIC SEA
publication: 1981-09-29
1981-09-21
-
1981-09-29
grid
British Geological Survey (BGS)
The Lyell Centre, Research Avenue South,
Edinburgh,
EH14 4AP,
UK
tel: +44 (0)131 667 1000
email:
enquiries@bgs.ac.uk
Role: custodian
British Geological Survey (BGS)
The Lyell Centre, Research Avenue South,
Edinburgh,
EH14 4AP,
UK
tel: +44 (0)131 667 1000
email:
offshoredata@bgs.ac.uk
Role: originator
Data Quality
Geophysical equipment types used included: Airgun/Sleeve Gun, Deep Tow Boomer, Echo Sounder, Gravimeter, Magnetometer, 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: Huntec deep tow boomer system with remote controlled winch, Krohn-hite bandpass filter and display on an EPC 3200 graphic recorder. Atlas Deso 10 echo sounder with hull mounted transducers (33 and 210KHz) and Edig 10 digitiser unit. LaCoste & Romberg S75 air-sea gravity meter. 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. 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. For more detailed information see the Cruise Report.
Minimal Distance:
5 urn:ogc:def:uom:EPSG::9001
INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of unknown theme
Constraints
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.
Metadata about metadata
abc9f747-53bb-0f38-e044-0003ba9b0d98
British Geological Survey (BGS)
The Lyell Centre, Research Avenue South,
Edinburgh,
EH14 4AP,
UK
tel: +44 (0)131 667 1000
email:
enquiries@bgs.ac.uk
Role: point of contact
2024-04-24