Identification

Title

Marine Management Organisation Land with Sea Views

Abstract

This layer has been developed in order to understand the extent of intervisibility in the Marine Plan Areas (as defined by the Marine Management Organisation) and the adjacent land onshore (in England). The colour of the grid cells on land represents the number of observation points (spaced 500m apart throughout Marine Plan Areas) that can be seen from each location on land (evaluated at points spaced 500m apart). The data has been classified into percentiles in order to highlight those areas on land that have the most extensive views of the sea surface in the marine plan areas. The darker reds indicate locations within the highest percentile of views of the sea and the darker blues indicate locations that have views of the sea, but they are not very extensive relative to other locations.

Resource type

dataset

Resource locator

http://environment.data.gov.uk/ds/catalogue/#/d68060ee289f3b470d926704393c02bb

description: A link to the web service or dataset

http://environment.data.gov.uk/ds/catalogue/index.jsp#/catalogue

description: A link to the general host site

Unique resource identifier

code

MMO400015

codeSpace

Dataset language

eng

Spatial reference system

code identifying the spatial reference system

urn:ogc:def:crs:EPSG::25830

Classification of spatial data and services

Topic category

imageryBaseMapsEarthCover

Keywords

Keyword set

keyword value

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2008-01-06

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

revision

effective date

2009-11-16

Keyword set

keyword value

originating controlled vocabulary

title

reference date

date type

creation

effective date

2011-02-16

Geographic location

West bounding longitude

-6.8501

East bounding longitude

2.1645

North bounding latitude

55.8118

South bounding latitude

49.8491

Extent

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

Bristol Channel

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

English Channel

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

Inner Seas off the West Coast of Scotland

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

Irish Sea and St. George's Channel

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

North Sea

Extent group

authority code

title

reference date

date type

creation

effective date

1954-01-01

code identifying the extent

Celtic Sea

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIIf

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIIg

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

IVc

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIIa

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

IVb

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIa

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIIe

Extent group

authority code

title

reference date

date type

creation

effective date

2014-05-16

code identifying the extent

VIId

Temporal reference

Temporal extent

Begin position

2013-08-21

End position

2016-04-20

Dataset reference date

date type

publication

effective date

2015-03-31

date type

creation

effective date

2013-08-21

date type

revision

effective date

2013-08-21

Frequency of update

notPlanned

Quality and validity

Lineage

This version of the dataset has been recreated on a national scale following the methodology outlined in the geoprocessing logs for MMO1037. Observation points were placed on the sea surface (with an OFFSET A value of 0m), and set at an OFFSET B value of 2m. A viewshed calculation therefore identified (for every location on the DEM) where a viewer at 2m height above ground level would see the observation points (i.e. the sea surface). This generated a raster layer where the higher the value of the raster cell, the greater the number of observation points seen and therefore, the greater the extent of sea views. There are several caveats associated with the dataset which are as follows: - The data represent the baseline scenario i.e. the sea surface rather than any particular offshore development scenario, so it needs to be acknowledged that if structures were to be added to the sea surface (e.g. turbines), then visibility of these would likely extend further inland (although bear in mind this will not increase visibility of the sea surface, just the development) - The modelling is based on a bare ground digital representation of the earths surface without any surface features, so visibility (and intervisibility) is likely to be an exaggeration of the actual situation. The addition of surface features, such as buildings and vegetation, would have the effect of blocking some views. - The resolution of the Digital Elevation Model will affect the sensitivity of the modelling being able to reflect small topographical features. - An equivalent Digital Elevation Model of France has not been sourced for this study. Therefore views of the sea from France have not been included in this mapping - Application of a theoretical limit on visibility of 35km imposes a layer of assumption that is based on guidance that relates to the significance of impacts of views of offshore turbines over this distance rather than having been measured for this work. - Placing observer points with a grid spacing of 500m between them on land may mean that some topographical features (such as ridgelines and peaks) are not accounted for in the model. - In order to remain objective, no provision has been made to weight the analysis towards high quality views or locations where large numbers of people would be expected.

Conformity

Data format

name of format

version of format

Constraints related to access and use

Constraint set

Use constraints

Open Government Licence. Acknowledgement of the Marine Management Organisation is required.

Constraint set

Limitations on public access

No limitations on access, however copyright should be used at all times.

Responsible organisations

Responsible party

contact position

Data/GIS Officer

organisation name

Marine Management Organisation

email address

dkm@marinemanagement.org.uk

responsible party role

originator

Responsible party

contact position

Data/GIS Officer

organisation name

Marine Management Organisation

email address

dkm@marinemanagement.org.uk

responsible party role

custodian

Metadata on metadata

Metadata point of contact

contact position

Data/GIS Officer

organisation name

Marine Management Organisation

email address

dkm@marinemanagement.org.uk

responsible party role

pointOfContact

Metadata date

2016-04-14

Metadata language