Reference System

MD_ReferenceSystem:

referenceSystemIdentifier:

RS_Identifier:

authority:

Citation:

Title:

www.epsg.org

Date:

CI_Date:

Date Type:

revision

date:

2005

code:

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

Code Space:

OGP

Identification

Data Identification:

citation:

Citation:

Title:

Wessex Archaeology (WSX) Geophysical Survey WESSEX3B: (23/Aug/2006 to 23/Aug/2006)

Date:

CI_Date:

Date Type:

publication

date:

2006-08-23

Identifier:

RS_Identifier:

code:

BGS_CMD_REF655

Code Space:

British Geological Survey

Abstract:

Wessex Archaeology was commissioned by Historic Scotland to undertake an Undesignated Site Assessment of the site known as the Tobermory Galleon in Tobermory Bay, Mull. The work was undertaken as part of the Contract for Archaeological Services in Relation to the Protection of Wrecks Act (1973). The assessment was carried out in advance of possible further commercial salvage work on the site. Wessex Archaeology conducted a geophysical survey at three sites within Tobermoray Harbour on the 23rd August 2006. The survey was conducted from the S/V Xplorer. A geophysical survey was followed by diver ground-truthing of anomalies was carried out to confirm the position, extent, stability and character of any significant archaeological deposits. The survey showed that part of the wreck and debris fields from both the sinking and subsequent salvage may still exist although the precise nature, extent and position of archaeological deposits associated with the wreck, in particular any surviving coherent ship structure, remained unclear. The survey included single beam echosounder, sub-bottom profiler and sidescan sonar. The geology and geophysics component of the data are archived at British Geological Survey (BGS) MEDIN Data Archive Centre (DAC) for Geology and Geophysics. Data were also provided to other archive centres as appropriate.

Point of Contact:

Responsible Party:

Organisation Name:

British Geological Survey (BGS)

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

+44 (0)131 667 1000

facsimile:

+44 (0)131 668 4140

Address:

Delivery Point:

The Lyell Centre, Research Avenue South

city:

Edinburgh

Postal Code:

EH14 4AP

country:

e-mail:

enquiries@bgs.ac.uk

role:

custodian

Responsible Party:

Organisation Name:

Wessex Archaeology

Contact Info:

CI_Contact:

Address:

e-mail:

offshoredata@bgs.ac.uk

role:

originator

Resource Maintenance:

MD_MaintenanceInformation:

maint. / update frequency:

notPlanned

Descriptive Keywords:

Keywords:

keyword:

http://vocab.nerc.ac.uk/collection/N01/current/NDGO0001

keyword:

NDGO0001

Keywords:

keyword:

http://www.eionet.europa.eu/gemet/concept?cp=13&langcode=en&ns=5

keyword:

Geology

Thesaurus Name:

Citation:

Title:

GEMET - INSPIRE themes, version 1.0

Date:

CI_Date:

date:

2008-06-01

Date Type:

publication

Keywords:

keyword:

soil and sediment

keyword:

http://vocab.nerc.ac.uk/collection/L13/current/SD

keyword:

http://vocab.nerc.ac.uk/collection/L13/current/CR

keyword:

crust

Thesaurus Name:

Citation:

Title:

SeaVoX Vertical Co-ordinate Coverages (L131)

Date:

CI_Date:

date:

2010-05-18

Date Type:

revision

Keywords:

keyword:

http://vocab.nerc.ac.uk/collection/P02/current/MBAN

keyword:

Bathymetry and Elevation

keyword:

http://vocab.nerc.ac.uk/collection/P02/current/SR2D

keyword:

Two-dimensional seismic reflection

keyword:

http://vocab.nerc.ac.uk/collection/P02/current/SSCN

keyword:

Side-scan sonar

Thesaurus Name:

Citation:

Title:

SeaDataNet Parameter Discovery Vocabulary (P021)

Date:

CI_Date:

date:

2011-07-27

Date Type:

revision

Resource Constraints:

MD_LegalConstraints:

Use Limitation:

unrestricted use, copyright acknowledgement - Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced Historic Scotland materials "Contains Historic Scotland materials ©Crown Copyright [year]"

Use Constraints:

otherRestrictions

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.

MD_LegalConstraints:

Access Constraints:

otherRestrictions

Spatial Representation Type:

grid

Spatial Resolution:

Resolution:

distance:

value:

units:

urn:ogc:def:uom:EPSG::9001

language:

eng

topicCategory:

geoscientificInformation

Extent:

Geographic Element:

Geographic Bounding Box:

westBoundLongitude:

-6.0712

eastBoundLongitude:

-6.0477

southBoundLatitude:

56.6135

northBoundLatitude:

56.6279

Geographic Description:

Geographic Identifier:

RS_Identifier:

authority:

Citation:

Title:

BGS Gazetteer

Date:

CI_Date:

Date Type:

revision

date:

2024-04-24

code:

Tiree

Geographic Description:

Geographic Identifier:

RS_Identifier:

authority:

Citation:

Title:

Charting Progress 2: Regional Sea Boundaries

Date:

CI_Date:

Date Type:

creation

date:

2009-06-18

code:

Minches & Western Scotland

Geographic Description:

Geographic Identifier:

RS_Identifier:

authority:

Citation:

Title:

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

Date:

CI_Date:

Date Type:

creation

date:

1954-01-01

code:

INNER SEAS OFF THE WEST COAST OF SCOTLAND

Temporal Element:

TemporalExtent:

extent:

begin / end:

begin:

2006-08-23

end:

2006-08-23

Distribution

Distribution:

Distributor:

Distributor Contact:

Responsible Party:

Organisation Name:

British Geological Survey (BGS)

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

+44 (0)131 667 1000

facsimile:

+44 (0)131 668 4140

Address:

Delivery Point:

The Lyell Centre, Research Avenue South

city:

Edinburgh

Postal Code:

EH14 4AP

country:

e-mail:

enquiries@bgs.ac.uk

role:

distributor

Transfer Options:

Digital Transfer Options:

onLine:

CI_OnlineResource:

linkage:

http://mapapps2.bgs.ac.uk/geoindex_offshore/home.html?cruise=WESSEX3B

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:

Data Quality

Data Quality:

Scope:

DQ_Scope:

level:

dataset

Report:

Domain Consistency:

Result:

Conformance Result:

specification:

Citation:

Title:

INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of unknown theme

Date:

CI_Date:

Date Type:

publication

date:

2011

explanation:

See the referenced specification

pass:

Lineage:

LI_Lineage:

statement:

Geophysical equipment types used included: CHIRP Sub-bottom Profiler, Echo Sounder and Sidescan Sonar. The survey was undertaken by Wessex Archaeology. Throughout the survey all co-ordinates were expressed in WGS84, UTM zone 29N. Single beam bathymetric data were recorded throughout all stages of surveying and was acquired using a Knudsen 320M single beam echo sounder. The echo-sounder transducer was mounted to the survey vessel, and the transducer draught was measured and entered into the echo sounder to obtain depths relative to the sea-surface. A TSS DMS 2.05 motion sensor was rigidly mounted above the transducer to measure the vertical displacement (heave) and attitude (roll/pitch) of the vessel; this data was interfaced with the echo sounder. The accuracy of the draught and velocity offsets were checked at the start of the survey using the bar check method. Sub-bottom profiler data were acquired using a chirp system. The chirp system used was the new EdgeTech 3100P portable sub-bottom profiling system using a SB-126S tow vehicle. The chirp is a high resolution wideband frequency modulated sub-bottom profiler. The system transmits a frequency modulated pulse that is swept over a full spectrum frequency range (in this case 2-12 kHz). The vertical resolution using 2 – 12 kHz frequency is 8cm and in an area of silts and clays, which is typical for the survey areas of concern, the typical sub-seabed penetration is expected to be up in excess of 10m. Sidescan sonar data were acquired using a Klein 3000 dual frequency towfish. This system collects data at 125kHz and 445kHz simultaneously. The Klein 3000 collects data at both high and low frequencies and therefore produces high quality images suitable for archaeological purposes. High and low frequency data were acquired at a range of 75m throughout the survey. Due to the number of moorings and moored vessels in the harbour navigating along planned survey lines was not always possible. However, full coverage of sidescan sonar data was ensured by acquiring sidescan sonar data at a smaller line spacing and running infill lines where necessary.

Metadata

File Identifier:

c5bc60cd-04e9-3862-e044-0003ba9b0d97

language:

eng

Resource type:

dataset

Metadata Contact:

Responsible Party:

Organisation Name:

British Geological Survey (BGS)

Contact Info:

CI_Contact:

phone:

CI_Telephone:

voice:

+44 (0)131 667 1000

facsimile:

+44 (0)131 668 4140

Address:

Delivery Point:

The Lyell Centre, Research Avenue South

city:

Edinburgh

Postal Code:

EH14 4AP

country:

e-mail:

enquiries@bgs.ac.uk

role:

pointOfContact

Date Stamp:

2024-04-24

Metadata Standard Name:

MEDIN Discovery Metadata Standard

Metadata Standard Version:

Version 2.3.5