Date (Publication)

1968-03-15

Citation identifier

British Geological Survey / BGS_CMD_REF7

Point of contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey (BGS)		enquiries@bgs.ac.uk	Custodian
British Geological Survey (BGS)		offshoredata@bgs.ac.uk	Originator

Maintenance and update frequency

Not planned

Keywords

• NDGO0001

GEMET - INSPIRE themes, version 1.0

• Geology

SeaVoX Vertical Co-ordinate Coverages (L131)

• soil and sediment
• crust

SeaDataNet Parameter Discovery Vocabulary (P021)

• Bathymetry and Elevation
• Magnetics
• Two-dimensional seismic reflection
• Side-scan sonar

Access constraints

Other restrictions

Access constraints

No restrictions, a copyright acknowledgement is required and permission from any third party for the release of the data has been obtained. Inclusion of any third party data will determine the copyright acknowledgement that needs to be made.

Use constraints

Other restrictions

Other 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.

Use limitation

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]"

Spatial representation type

Grid

Distance

5  urn:ogc:def:uom:EPSG::9001

Language

English

Topic category

• Geoscientific information

Geographic identifier

Humber-Trent

BGS Gazetteer 2025-05-08 revision

Geographic identifier

Spurn

BGS Gazetteer 2025-05-08 revision

Geographic identifier

Southern North Sea

Charting Progress 2: Regional Sea Boundaries 2009-06-18 creation

Geographic identifier

NORTH SEA

The SeaVoX Salt and Fresh Water Body Gazetteer: Sub-Ocean Category 1954-01-01 creation

Begin date

1968-02-23

End date

1968-03-15

Reference system identifier

OGP / urn:ogc:def:crs:EPSG::4326

www.epsg.org 2005 revision

Distribution format

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey (BGS)		enquiries@bgs.ac.uk	Distributor

OnLine resource

Protocol	Linkage	Name
HTTP	http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=1968/2	BGS Offshore Geoindex

Hierarchy level

Dataset

Statement

Geophysical equipment types used included: Echo Sounder, Magnetometer, Pinger, Sidescan Sonar and Sparker. The survey was undertaken by British Geological Survey. Information for this survey is sourced from IGS report 69/3. Vessel – 110 foot. The ship was fitted with: Navigation - Decca Navigator MK 12 and sextants, Kelvin Hughes echosounder type MS26A Mk2 (15kHz) and ship-shore radio. Extra equipment fitted for geophysical work included Decca Hi-fix system, Kelvin Hughes transit sonar MS43 Mk1 (kHz) single channel towed to side of ship’s bow wave, an E.G. & G. sidescan sonar Mk 1 with Model 259 recorder and Model 268 tow fish, and an E.G. & G. sonar Boomer and Sparker system with Model 229 (5 kHz) Pinger probe set and Model 254 seismic recorder. Pinger gave penetration of up to ~40 ft. Boomer was used at 500 & 1000 joule on one day only as did not compare well with Sparker. The sparkarray source was used at 500, 1000 and 3000 Joule levels, and worked well, at high energy levels penetration at depths up to 1000 ft were achieved. They carried out 53 traverses. Although the results were acceptable the need to tow the hydrophone alongside the ship and not astern resulted in high noise levels which could not be filtered out and affected the record quality. Navigation fixing accuracy estimated at +/- 50 ft. For more detailed information on the acquisition equipment and data collection techniques, operational standards, data processing methods and quality control procedures used on this survey see the Report of Survey/Cruise Report and associated documentation where available. The information available may vary depending on the age of the survey. Data are checked and loaded to the BGS Coastal and Marine data management system following BGS marine data management procedures.

Metadata

File identifier

abc9f747-546a-0f38-e044-0003ba9b0d98 XML

Metadata language

English

Hierarchy level

Dataset

Date stamp

2025-05-08

Metadata standard name

MEDIN Discovery Metadata Standard

Metadata standard version

Version 2.3.5

Metadata author

Organisation name	Individual name	Electronic mail address	Role
British Geological Survey (BGS)		enquiries@bgs.ac.uk	Point of contact