Identification

Title

British Geological Survey (BGS) Geophysical Survey 1981/6: Bristol Channel & SW Approaches (21/09/1981 to 29/09/1981)

Abstract

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.

Resource type

dataset

Resource locator

http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1981/6

protocol: HTTP

name: BGS Offshore Geoindex

description: 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.

function: search

Unique resource identifier

code

BGS_CMD_REF196

codeSpace

British Geological Survey

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::4326

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2010-05-18

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-07-27

Geographic location

West bounding longitude

-6.6419

East bounding longitude

-3.3881

North bounding latitude

51.6947

South bounding latitude

50.7126

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2024-04-18

code identifying the extent

Haig Fras

Extent group

authority code

title

reference date

date type

revision

effective date

2024-04-18

code identifying the extent

Lands End

Extent group

authority code

title

reference date

date type

revision

effective date

2024-04-18

code identifying the extent

Nymphe Bank

Extent group

authority code

title

reference date

date type

revision

effective date

2024-04-18

code identifying the extent

Lundy

Extent group

authority code

title

reference date

date type

revision

effective date

2024-04-18

code identifying the extent

Bristol Channel

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Western Channel & Celtic Sea

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

BRISTOL CHANNEL

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

CELTIC SEA

Temporal reference

Temporal extent

Begin position

1981-09-21

End position

1981-09-29

Dataset reference date

date type

publication

effective date

1981-09-29

Frequency of update

notPlanned

Quality and validity

Lineage

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.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011

degree

false

explanation

See the referenced specification

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Constraint set

Use constraints

unrestricted use, copyright acknowledgement - Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced British Geological Survey materials "Contains British Geological Survey materials ©UKRI [year]"

Limitations on public access

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.

Responsible organisations

Responsible party

organisation name

British Geological Survey (BGS)

full postal address

The Lyell Centre, Research Avenue South

Edinburgh

EH14 4AP

UK

telephone number

+44 (0)131 667 1000

facsimile number

+44 (0)131 668 4140

email address

enquiries@bgs.ac.uk

responsible party role

custodian

Responsible party

organisation name

British Geological Survey (BGS)

full postal address

The Lyell Centre, Research Avenue South

Edinburgh

EH14 4AP

UK

telephone number

+44 (0)131 667 1000

facsimile number

+44 (0)131 668 4140

email address

offshoredata@bgs.ac.uk

responsible party role

originator

Metadata on metadata

Metadata point of contact

organisation name

British Geological Survey (BGS)

full postal address

The Lyell Centre, Research Avenue South

Edinburgh

EH14 4AP

UK

telephone number

+44 (0)131 667 1000

facsimile number

+44 (0)131 668 4140

email address

enquiries@bgs.ac.uk

responsible party role

pointOfContact

Metadata date

2024-04-18

Metadata language