Identification

Title

1991 Marine Biological Association (MBA) Witch Ground Basin RRS Challenger Cruise 82 sediment cores and gas sampling

Abstract

The objectives of Leg 1 of this survey were: - To locate the source of hydrogen plumes in the Witch Ground Basin by taking water samples with the rosette sampler. - To take core samples from the 2 large pockmarks in UK Block 15/25 to obtain Astomonema and other samples needed to complete studies on these pockmarks. - To re-survey the extent of the shallow gas deposits mapped in 1990. Leg 2: - To map the distribution of shallow gas and gas seeps in the Skagerrak north of Hirtshals and to study the relationship of the seeps to bottom and sub-bottom topography. - To obtain sediment cores from methane-rich and methane-poor sediments in order to compare their biomass, species composition and geochemistry. - To collect fauna for stable isotope analysis, for biochemical studies and for electron microscopy. - To measure gas concentrations and bacterial activity in the sediments and in the water collumn.

Resource type

dataset

Resource locator

https://doi.org/10.17031/1804

name: DOI link

description: A link to the web service or dataset

http://www.dassh.ac.uk

name: DASSH homepage

description: A link to the general host site

Unique resource identifier

code

DASSHDT00000316

codeSpace

http://www.dassh.ac.uk

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

geoscientificInformation

oceans

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

revision

effective date

2009-11-16

Geographic location

West bounding longitude

0.0000

East bounding longitude

11.0000

North bounding latitude

59.0000

South bounding latitude

57.0000

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

2009-06-18

code identifying the extent

Northern North Sea

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

42F0

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

44F0

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

42F1

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

44F1

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

45F1

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

42F2

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

44F2

Extent group

authority code

title

reference date

date type

creation

effective date

2009-05-01

code identifying the extent

45F2

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

soil and sediment

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

soil and sediment boundary layer

Extent group

authority code

title

reference date

date type

revision

effective date

2010-01-01

code identifying the extent

water column

Temporal reference

Temporal extent

Begin position

1991-07-12

End position

1991-07-28

Dataset reference date

date type

publication

effective date

2021-12-23

date type

creation

effective date

1991-07-28

date type

revision

effective date

2021-12-23

Frequency of update

notPlanned

Quality and validity

Lineage

This survey was conducted over two legs. The first leg was conducted from 12-18th July 1991 and the second from 19-31 July 1991. Experts from multiple disciplines carried out the work and analysed the data. Details of the participants of each leg can be found in the report, as can detailed notes of the cruise. Core data only (no information on gas type data). If any sensitive species or biotope records are present within this dataset, they will have been removed. If you wish to request access to sensitive species records, please contact the metadata contact. The UK Sensitive Species list has been agreed by UK statutory bodies and relevant experts. It can be viewed here https://docs.nbnatlas.org/sensitive-species-list/. Please note sensitive species lists can vary across the UK.

Conformity

Conformity report

specification

title

reference date

date type

publication

effective date

2011-02-02

degree

true

explanation

See the referenced specification

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Open Government License (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/)

Constraint set

Limitations on public access

Open Government License (OGL)- no restriction to public access

Responsible organisations

Responsible party

contact position

Data Manager

organisation name

Marine Biological Association of the UK (MBA)

full postal address

Citadel Hill

Plymouth

PL1 2PB

email address

dassh.enquiries@mba.ac.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Data Archive for Seabed Species and Habitats (DASSH)

full postal address

Marine Biological Association of the UK, The Laboratory, Citadel Hill

Plymouth

PL1 2PB

telephone number

01752 633102

facsimile number

01752 633291

email address

dassh.enquiries@mba.ac.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Data Archive for Seabed Species and Habitats (DASSH)

full postal address

Marine Biological Association of the UK, The Laboratory, Citadel Hill

Plymouth

PL1 2PB

telephone number

01752 633102

facsimile number

01752 633291

email address

dassh.enquiries@mba.ac.uk

responsible party role

pointOfContact

Metadata date

2021-12-23

Metadata language