Identification

Title

1990 - 2019 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Predictor variables and groundtruth samples for north-west European continental shelf quantitative sediment analysis

Abstract

Input data used to model sediment grain size for the north-west European continental shelf. Data includes: Sediment groundtruth observations with measured fractions of mud, sand and gravel, also converted to two additive log-ratios. These total 45761 samples. Also included are the eight predictor variables that were used to model sediment grain size. These were: Bathymetry, Bathymetric position index at a 50-pixel radii, Bathymetric position index at a 434-pixel radii, Distance from coast, Current speed at the seabed, Wave peak orbital velocity at the seabed, and suspended inorganic particulate matter for summer and winter as two separate variables.

Resource type

dataset

Resource locator

http://data.cefas.co.uk/#/View/19766/

function: order

Unique resource identifier

code

CEFAS0c33c81e-43d1-4b57-9740-8d2d6833c15b

codeSpace

http://www.cefas.co.uk/

Dataset language

eng

Spatial reference system

authority code

OGP

code identifying the spatial reference system

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

Classification of spatial data and services

Topic category

geoscientificInformation

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2011-03-25

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Geographic location

West bounding longitude

-13

East bounding longitude

11

North bounding latitude

63

South bounding latitude

48

Extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Extent group

authority code

title

reference date

date type

revision

effective date

2010-05-18

code identifying the extent

Temporal reference

Temporal extent

Begin position

1990-01-01T00:00:00.000Z

End position

2019-01-01T00:00:00.000Z

Dataset reference date

date type

publication

effective date

2020-09-11

Frequency of update

notPlanned

Quality and validity

Lineage

Groundtruth observations were downloaded from a number of European government agencies and academic literature. A thorough filtering of samples was performed to delete samples collected prior to 1990 and samples where rounded sediment fractions were recorded (suggesting the values had been estimated and not quantitatively measured). Where sediment samples were located within the same pixel the mean of the sediment fractions was also calculated to produce an average value representative of that pixel. Predictor variables were downloaded from various sources. Bathymetry data and associated derivatives were downloaded from EMODnet bathymetry ( `http://www.emodnetbathymetry.eu/`_ ). Current speed and Orbital velocity of waves at the seafloor were modelled by Cefas staff. Suspended inorganic particulate matter layers were derived from data downloaded from Copernicus online portal ( `http://marine.copernicus.eu/`_ ). .. _`http://www.emodnetbathymetry.eu/`: http://www.emodnetbathymetry.eu/ .. _`http://marine.copernicus.eu/`: http://marine.copernicus.eu/

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Constraint set

Limitations on public access

Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply

Responsible organisations

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

originator

Responsible party

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data Manager

organisation name

Centre for Environment, Fisheries & Aquaculture Science

full postal address

Cefas Lowestoft Laboratory

Pakefield Road

Lowestoft

NR33 0HT

UK

telephone number

+44 (0)1502 562244

email address

data.manager@cefas.co.uk

responsible party role

pointOfContact

Metadata date

2020-09-11T11:11:42

Metadata language