Identification

Title

2000 National Oceanography Centre Southampton (NOC), Portland Harbour to Ringstead, Dorset, Seagrass and Sea pen video sledge survey

Abstract

Survey run by Dr Ken Collins of the NOC (Southampton) on behalf of Dorset Wildlife Trust. These records all relate to 'Collins, K., Johnson, M., Mallinson, J. and Markey, M. (2000) Seagrass (Zostera marina) and Sea Pen (Virgularia mirabilis) surveys, Portland Harbour to Ringstead, Dorset' A copy of the report is held at Dorset Environmental Records Centre. The main focus of this work was a video sledge survey of Portland Harbour. A colour video camera was towed at 1-2 knots over the seabed of the Harbour. Tracks at 200m spacing were followed through the whole of the Harbour with the exception of the port exclusion zone and around a very large vessel moored in the centre of the harbour. In the shallow, western part of the harbour, the survey was extended to the extent of the low water springs. Differential GPS positions were continuously recorded against the video time code. A detailed study of the Portland Harbour video records has been made by Mike Johnson as part of his BSc dissertation - see references for full title. The survey vessel is based in Poole Harbour and en route to Portland Harbour tows were made from off Ringstead to Weymouth Bay. In the very shallow waters off Ringstead, a small 4m inflatable was used to tow a sledge with a self contained camcorder in underwater housing. Here, positions were recorded using a handheld GPS unit. Please note, these records have also been incorporated into subsequent reports written by the same author. The survey data entered into this database has been supplied electronically by Dr. Ken Collins.

Resource type

dataset

Resource locator

Unique resource identifier

code

MRLRC00100000550

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

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

Classification of spatial data and services

Topic category

biota

imageryBaseMapsEarthCover

biota

Keywords

Keyword set

keyword value

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2008-01-06

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2011-02-16

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2003-01-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2009-11-16

Geographic location

West bounding longitude

-2.4657

East bounding longitude

-2.3410

North bounding latitude

50.6337

South bounding latitude

50.5680

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

benthic boundary layer

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

water column

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Eastern Channel

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Western Channel and Celtic Sea

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

29E7

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

30E7

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

29E8

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

30E8

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

English Channel

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

infralittoral

Temporal reference

Temporal extent

Begin position

1999-08-09

End position

1999-08-20

Dataset reference date

date type

publication

effective date

2013-01-25

Frequency of update

notPlanned

Quality and validity

Lineage

Survey run by Dr Ken Collins of the NOC (Southampton) on behalf of Dorset Wildlife Trust. These records all relate to 'Collins, K., Johnson, M., Mallinson, J. and Markey, M. (2000) Seagrass (Zostera marina) and Sea Pen (Virgularia mirabilis) surveys, Portland Harbour to Ringstead, Dorset' A copy of the report is held at Dorset Environmental Records Centre. The main focus of this work was a video sledge survey of Portland Harbour. A colour video camera was towed at 1-2 knots over the seabed of the Harbour. Tracks at 200m spacing were followed through the whole of the Harbour with the exception of the port exclusion zone and around a very large vessel moored in the centre of the harbour. In the shallow, western part of the harbour, the survey was extended to the extent of the low water springs. Differential GPS positions were continuously recorded against the video time code. A detailed study of the Portland Harbour video records has been made by Mike Johnson as part of his BSc dissertation - see references for full title. The survey vessel is based in Poole Harbour and en route to Portland Harbour tows were made from off Ringstead to Weymouth Bay. In the very shallow waters off Ringstead, a small 4m inflatable was used to tow a sledge with a self contained camcorder in underwater housing. Here, positions were recorded using a handheld GPS unit. Please note, these records have also been incorporated into subsequent reports written by the same author. The survey data entered into this database has been supplied electronically by Dr. Ken Collins.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced.

Constraint set

Limitations on public access

No restrictions to public access

Responsible organisations

Responsible party

organisation name

National Oceanography Centre (NOC), Southampton

email address

dassh.enquiries@mba.ac.uk

responsible party role

originator

Responsible party

contact position

Record Centre Manager

organisation name

Dorset Environmental Record Centre

email address

c.a.steele@dorsetcc.gov.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Marine Survey and Data Officer

organisation name

Dorset Wildlife Trust

email address

CBolton@dorsetwildlifetrust.org.uk

responsible party role

pointOfContact

Metadata date

2016-11-15

Metadata language