Multibeam Bathymetry
Multibeam echo sounders, for Bathymetric survey, use sonar pulses to measure the distance between the survey vessel and the seabed. This instrument collects point data at a resolution of 25cm or better, depending on water depth, vessel speed and bed topography and produces a high resolution elevation dataset of the underwater terrain. The Environment Agency's Multibeam Bathymetric data archive includes digital elevation data derived from bathymetric surveys carried out by the Environment Agency for a range of applications and locations where surveys have been previously commissioned. Multibeam data is available at 50cm resolution and supplied as an ESRI ASCII Raster which contains height, relative to Ordnance Survey Newlyn datum. This is a technical spatial dataset and requires specialist geographic information system software to open and manipulate the data. Data is available in 5km download zip files for each year of survey. Within each downloaded zip file are ASCII files aligned to the Ordinance Survey grid. The size of each tile is dependant upon the spatial resolution of the data. Elevation values are presented in metres. Catalogue shapefiles of data extent are available via the resource locator link below. The catalogue shapefiles contain metadata for each tile including the start and end date of a survey and spatial resolution of the dataset. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.
dataset
https://environment.data.gov.uk/DefraDataDownload/?Mode=survey
protocol: DSP:ESRI
name: Survey_Download
description: Survey Download
https://environment.data.gov.uk/DefraDataDownload/?mapService=EA/SurveyIndexFiles&Mode=spatial
protocol: DSP:ESRI
name: Metadata Shapefile Index Catalogues - Download
description: Download the coverage metadata files
https://environment.data.gov.uk/spatialdata/survey-index-files/wms
protocol: OGC:WMS
name: Metadata Index Catalogues - WMS
description: Coverage metadata files - Web Map Service
https://environment.data.gov.uk/spatialdata/survey-index-files/wfs
protocol: OGC:WFS
name: Metadata Index Catalogues - WFS
description: Coverage metadata files - Web Feature Service
https://support.environment.data.gov.uk/hc/en-gb/sections/360001747351-Survey-Data-Catalogue
protocol: http:
name: Survey_Data_FAQs
description: Survey Data Catalogue FAQs
8a368a69-07b4-4136-846f-d85253d6b311
eng
http://www.opengis.net/def/crs/EPSG/0/27700
environment
oceans
elevation
OpenData
Elevation
Mapping
Bathymetry
sea bed
mapping
remote sensing
publication
2010-01-13
-5.7
1.8
55.8
50
http://data.ordnancesurvey.co.uk/doc/country/england
2010-09-02T00:00:00
Invalid DateT00:00:00
creation
2010-02-09
revision
2021-01-04
biannually
Multibeam echo sounders, for Bathymetric survey, use sonar pulses to measure the distance between the survey vessel and the seabed. This instrument collects point data at a resolution of 25cm or better, depending on water depth, vessel speed and bed topography and produces a high resolution elevation dataset of the underwater terrain.
Open format | Arc/Info ASCII Grid (AAIGrid)
Not Applicable
Open Government Licence
There are no public access constraints to this data. Use of this data is subject to the licence identified.
Environment Agency
DSPcustomerforum@environment-agency.gov.uk
https://support.environment.data.gov.uk/hc/en-gb
description: Defra Data Services Forum
pointOfContact
Environment Agency
metadata@environment-agency.gov.uk
pointOfContact
2022-03-21