Date (Publication)

2016-04-17

Citation identifier

British Geological Survey / BGS_CMD_REF992

Point of contact

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

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 Scottish Natural Heritage materials "Contains Scottish Natural Heritage materials ©Scottish Natural Heritage [year]"

Spatial representation type

Grid

Distance

5  urn:ogc:def:uom:EPSG::9001

Language

English

Topic category

• Geoscientific information

Geographic identifier

Clyde

BGS Gazetteer 2025-01-10 revision

Geographic identifier

Argyll

BGS Gazetteer 2025-01-10 revision

Geographic identifier

Irish Sea

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

Geographic identifier

INNER SEAS OFF THE WEST COAST OF SCOTLAND

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

Begin date

2015-11-25

End date

2016-04-17

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=2015/9_SNH	BGS Offshore Geoindex

Hierarchy level

Dataset

Statement

British Geological Survey was contracted to undertake the survey on behalf of Scottish Natural Heritage. NAVIGATION: A Trimble SPS461 with precise DGPS corrections provided via a Fugro MarineStar license, which provides approximately 0.10m accuracy in horizontal and 0.15m in the vertical. A Kongsberg Seatex Seapath 200 combines GPS and an MRU to provide vessel heading and motion data plus a secondary position feed. Soundings were reduced to Chart Datum in CARIS Hips and Sips v9.1. All control is referred to the European Terrestrial Reference System 1989 using the GRS80 Ellipsoid. Grid and orthometric heights are given in terms of WGS 84 UTM Zone 30 and Chart Datum. MULTIBEAM: EM3002D is a dual-headed multibeam system capable of producing up to 508 dynamically focused beams; this produces a swath width of up to 200° operable in depths of up to 200 m. The system operates in the 300 kHz frequency range, which ensures narrow beams and a small acoustic footprint, and is also robust under conditions with high particle content in the water column. Kongsberg acquisition software, Seafloor Information System (SIS). All multibeam data was processed in CARIS HIPS and SIPS. Tidal reduction was performed predominantly using RTK height, however when this dropped out for boxes T1Plus and D5 the tide gauge at Millport was used. IHO Order 1a. BACKSCATTER data: ARCGRID; TIF images; XYZ. Fledermaus (.sd) available on request. SIDE SCAN SONAR: Equipment trials - Data not available. TIDE: The VORF model was used for the majority of this project; Areas D6 and T4 experienced RTK drop out, as such VORF could not be used here. In these areas data from the Millport tide gauge was used for tidal reductions. 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.

Metadata

File identifier

56b756be-ea8a-1448-e054-002128a47908 XML

Metadata language

English

Hierarchy level

Dataset

Date stamp

2025-01-10

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