1990 - 2019 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Predictor variables and groundtruth samples for north-west European continental shelf quantitative sediment analysis
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.
dataset
http://data.cefas.co.uk/#/View/19766/
function: order
CEFAS0c33c81e-43d1-4b57-9740-8d2d6833c15b
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::4326
geoscientificInformation
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
-13
11
63
48
revision
2010-05-18
revision
2010-05-18
1990-01-01T00:00:00.000Z
2019-01-01T00:00:00.000Z
publication
2019-12-10
notPlanned
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/
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Public data (Crown Copyright) - Open Government Licence Terms and Conditions apply
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
originator
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
custodian
Data Manager
Centre for Environment, Fisheries & Aquaculture Science
Cefas Lowestoft Laboratory
Pakefield Road
Lowestoft
NR33 0HT
UK
+44 (0)1502 562244
pointOfContact
2019-12-10T09:04:21