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
  Institute of Nature Research - ( )
Maintenance and update frequency
As needed
Keywords ( 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
Metadata 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
  • GeoTIFF ( 1.0 )

Units of distribution
Degrees [°]
Transfer size
50
OnLine resource
The aspect map in geoportal ( WWW:LINK-1.0-http--link )
OnLine resource
IslandsDEM_aspect ( OGC:WMS-1.3.0-http-get-capabilities )

IslandsDEM aspect

Units of distribution
Degrees [°]
Transfer size
20
Units of distribution
Degrees [°]
Transfer size
10
Units of distribution
Percent [%]
Transfer size
50
Units of distribution
Percent [%]
Transfer size
20
Units of distribution
Percent [%]
Transfer size
10
OnLine resource
Information document about the Aspect map data. ( WWW:LINK-1.0-http--link )

PDF document

OnLine resource
Ísland DEM Geoportal ( WWW:LINK-1.0-http--link )
OnLine resource
FTP - NLSI ( WWW:LINK-1.0-http--link )
OnLine resource
FTP NLSI - styles ( WWW:LINK-1.0-http--link )
OnLine resource
Institute of Nature Research - Webside ( WWW:LINK-1.0-http--link )

NLSI Webside

Hierarchy level
Dataset
Statement
See further information about the Aspect map in the attached metadata description.
File identifier
efb28f60-f63a-4671-aa05-b5468c128641 XML
Metadata language
en
Character set
UTF8
Date stamp
2024-07-11T10:26:03
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  Institute of Nature Research - ( )
 
 

Overviews

overview
Thumbnail Aspect map

Spatial extent

N
S
E
W
thumbnail


Keywords

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

Provided by

Associated resources

Not available