Identification

Title

Multibeam Bathymetry

Alternative title(s)

Abstract

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 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. 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. Please refer to the metadata index catalgoues for the survey date captured and spatial resolution of the imagery. Attribution statement: © Environment Agency copyright and/or database right 2019. All rights reserved.

Resource type

dataset

Resource locator

https://environment.data.gov.uk/DefraDataDownload/?Mode=survey

protocol: http

name: Survey Data - Download

description: Download the survey data

https://environment.data.gov.uk/explore/5fa53736-11f5-417b-b160-9ac98bd012f5?download=true

protocol: http

name: Metadata Shapefile Index Catalogues - Download

description: Download the coverage metadata files

https://environment.data.gov.uk/spatialdata/survey-index-files/wms

protocol: http

name: Metadata Index Catalogues - WMS

description: Coverage metadata files - Web Map Service

https://environment.data.gov.uk/spatialdata/survey-index-files/wfs

protocol: http

name: Metadata Index Catalogues - WFS

description: Coverage metadata files - Web Feature Service

https://support.environment.data.gov.uk/space/DPK/15827049/Survey+Data+Catalogue

protocol: http

name: Survey Data FAQs

description: Survey Data FAQs

Unique resource identifier

code

8a368a69-07b4-4136-846f-d85253d6b311

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

http://www.opengis.net/def/crs/EPSG/0/27700

Classification of spatial data and services

Topic category

environment

oceans

elevation

Keywords

Keyword set

keyword value

Bathymetry

environment

oceans

elevation

Keyword set

keyword value

Elevation

originating controlled vocabulary

title

reference date

date type

publication

effective date

2008-06-01

Keyword set

keyword value

mapping

originating controlled vocabulary

title

reference date

date type

publication

effective date

2010-01-13

Keyword set

keyword value

remote sensing

originating controlled vocabulary

title

reference date

date type

publication

effective date

2010-01-13

Keyword set

keyword value

mapping

originating controlled vocabulary

title

reference date

date type

publication

effective date

2010-01-13

Keyword set

keyword value

sea bed

originating controlled vocabulary

title

reference date

date type

publication

effective date

2010-01-13

Geographic location

West bounding longitude

-5.7

East bounding longitude

1.8

North bounding latitude

55.8

South bounding latitude

50

Temporal reference

Temporal extent

Begin position

2010-09-02

End position

2021-01-04

Dataset reference date

date type

creation

effective date

2010-02-09

date type

revision

effective date

2023-12-15

Frequency of update

biannually

Quality and validity

Lineage

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.

Conformity

Data format

name of format

Open format | Arc/Info ASCII Grid (AAIGrid)

version of format

Not Applicable

Constraints related to access and use

Constraint set

Use constraints

Open Government Licence

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Constraint set

Use constraints

Constraint set

Limitations on public access

There are no public access constraints to this data. Use of this data is subject to the licence identified.

Responsible organisations

Responsible party

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

web address

https://environment.data.gov.uk/support

description: Defra Data Services Forum

responsible party role

pointOfContact

Metadata on metadata

Metadata point of contact

organisation name

Environment Agency

email address

DSPcustomerforum@environment-agency.gov.uk

responsible party role

pointOfContact

Metadata date

2023-12-16

Metadata language