Stefnukort / Aspect map

Slope aspect map of Iceland.



This tool calculates slope aspect (i.e. slope orientation in degrees clockwise from north) for each grid cell in an input digital elevation model (DEM).

“Aspect values indicate the directions the physical slopes face.”

The values of each cell in the output raster indicate the compass direction the surface faces at that location. It is measured clockwise in degrees from 0 (due north) to 360 (again due north), coming full circle. Flat areas having no downslope direction are given a value of -1.

Simple

Date (Publication)
2022-02-02
Status
On going
Point of contact
Organisation name Individual name Electronic mail address Role

Natural Science Institute of Iceland

natt@natt.is

Point of contact
Maintenance and update frequency
As needed
Theme

  • terrain analysis

  • DEM derivates

  • topographic attributes

  • geomorphometry

  • first derivatives

  • steepness

  • surface parameters
Keywords

  • geomorphology

  • ecology

  • (soil) conservation practices

  • (soil) biodiversity mapping

  • land management

  • landscape planning

  • land capability class

  • natural hazard assessment

  • microclimate assessment

  • aspect

  • stefnukort
Access constraints
Other restrictions
Other constraints
engar takmarkanir, opið aðgengi
Use constraints
Other restrictions
Other constraints
TilvísunHöfundar 4.0 Alþjóðlegt (CC BY 4.0)
Denominator
50
Language

eng
Character set
UTF8
N
S
E
W
thumbnail




Reference system identifier
3057 / 8088
Number of dimensions
1
Dimension name
Row
Dimension size
50
Resolution
50  m
Dimension name
Column
Dimension size
50
Resolution
50  m
Cell geometry
Area
Transformation parameter availability
Yes
Number of dimensions
1
Dimension name
Row
Dimension size
20
Resolution
20  m
Cell geometry
Area
Transformation parameter availability
Yes
Number of dimensions
1
Dimension name
Column
Dimension size
20
Cell geometry
Area
Transformation parameter availability
Yes
Number of dimensions
1
Dimension name
Row
Dimension size
10
Resolution
10  m
Dimension name
Column
Dimension size
10
Resolution
10  m
Cell geometry
Area
Transformation parameter availability
Yes
Distribution format
Name Version

GeoTIFF

1.0

Digital transfer options

Units of distribution

Degrees [°]
Transfer size
50
OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		https://dem.gis.is/mapview/?application=DEM&l=is&c=510085,576349&z=2.0&ls=87,1607,1041,62

The aspect map in geoportal

OGC:WMS-1.3.0-http-get-capabilities

 		https://gis.lmi.is/mapcache/isn93/wms?request=GetCapabilities

IslandsDEM_aspect

Digital transfer options

Units of distribution

Degrees [°]
Transfer size
20

Digital transfer options

Units of distribution

Degrees [°]
Transfer size
10

Digital transfer options

Units of distribution

Percent [%]
Transfer size
50

Digital transfer options

Units of distribution

Percent [%]
Transfer size
20

Digital transfer options

Units of distribution

Percent [%]
Transfer size
10

Digital transfer options

OnLine resource
Protocol Linkage Name

WWW:LINK-1.0-http--link

 		https://atlas.lmi.is/gn/myndir/AspectMap2021.pdf

Information document about the Aspect map data.

WWW:LINK-1.0-http--link

 		https://dem.gis.is/mapview/?application=DEM

Ísland DEM Geoportal

WWW:LINK-1.0-http--link

 		https://ftp.lmi.is/gisdata/raster/

FTP - NLSI

WWW:LINK-1.0-http--link

 		https://ftp.lmi.is/gisdata/raster/StyleSymbology/

FTP NLSI - styles

WWW:LINK-1.0-http--link

 		http://www.lmi.is/

Natural Science Institute of Iceland - Webside
Hierarchy level
Dataset
Statement

See further information about the Aspect map in the attached metadata description.

Metadata

File identifier
efb28f60-f63a-4671-aa05-b5468c128641 XML
Metadata language
English
Character set
UTF8
Date stamp
2026-09-29T13:21:15.136758901Z
Metadata standard name

ISO 19115:2003/19139
Metadata standard version

1.0
Metadata author
Organisation name Individual name Electronic mail address Role

Natural Science Institute of Iceland

natt@natt.is

Point of contact
 
 

Overviews

overview
Thumbnail Aspect map

Spatial extent

thumbnail

Keywords

DEM derivates first derivatives geomorphometry steepness surface parameters terrain analysis topographic attributes


Provided by

Access to the catalogue