2015 - 2015 Centre for Environment, Fisheries & Aquaculture Science (Cefas) DPLUS026 British Virgin Islands Seabed Classification Map
Darwin BVI mapping
Predicted seabed classification map for part of Sir Francis Drake Channel south of Tortola, British Virgin Islands.
dataset
http://data.cefas.co.uk/#/View/18174/
function: order
CEFASe40207b8-8739-46b4-9177-03bc430dcd13
http://www.cefas.co.uk/
eng
OGP
urn:ogc:def:crs:EPSG::32600
inlandWaters
revision
2011-03-25
publication
2008-06-01
publication
2008-06-01
-70
-60
20
10
revision
2010-05-18
2015-04-01T00:00:00.000Z
2015-09-30T00:00:00.000Z
publication
2015-12-31
notPlanned
A new habitat map for the site was produced by analysing and interpreting the available acoustic data and the ground truth data collected by the dedicated survey of North St George's Channel rMCZ. The process is a combination of two approaches, statistical modelling and image analysis. To map substrata and assemblage types across the study site, object-based image analysis (OBIA; Blaschke, 2010) was utilised. The technique was implemented in the software package eCognition® v8.8 combined with a predictive modelling approach using the Random Forest2 algorithm (Breiman, 2001) application within eCognition®. This consists of a classification model aimed at predicting a target variable (in this case, sediment composition) based on exhaustively sampled auxiliary variables (in this case, the acoustic data). The technique has been used in previous studies to predict sediment type (Li et al., 2011a). Li et al. (2011b) showed that the Random Forest algorithm outperformed a range of other modelling techniques for predicting substrate type (Liaw and Wiener, 2002).
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
2020-01-09T14:09:44