R-Factor for Alaska
The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Unified Soil Loss Equation (RUSLE) to estimate annual rates of erosion. This product is a raster representation of R-Factor derived from isoerodent maps published in the Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). Lines connecting points of equal rainfall erosivity are called isoerodents. The isoerodents plotted on a map of Alaska were digitized, then values between these lines were obtained by linear interpolation. The final R-Factor data are in raster GeoTiff format at 800 meter resolution in Albers Conic Equal Area,WGS84, WGS84.
Resources
4 resources available
-
NOAA Data Management Plan (DMP)
PLACEHOLDER/VALUE -
GCMD Keyword Forum Page
PLACEHOLDER/VALUE -
Full Metadata Record
PLACEHOLDER/VALUE -
NOAA Office for Coastal Management Website
PLACEHOLDER/VALUE
Complete Metadata
| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA Office for Coastal Management",
"@type": "vcard:Contact",
"hasEmail": "mailto:coastal.info@noaa.gov"
}
|
| describedByType | application/octet-steam |
| description | The rainfall-runoff erosivity factor (R-Factor) quantifies the effects of raindrop impacts and reflects the amount and rate of runoff associated with the rain. The R-factor is one of the parameters used by the Revised Unified Soil Loss Equation (RUSLE) to estimate annual rates of erosion. This product is a raster representation of R-Factor derived from isoerodent maps published in the Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). Lines connecting points of equal rainfall erosivity are called isoerodents. The isoerodents plotted on a map of Alaska were digitized, then values between these lines were obtained by linear interpolation. The final R-Factor data are in raster GeoTiff format at 800 meter resolution in Albers Conic Equal Area,WGS84, WGS84. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "NOAA Data Management Plan (DMP)",
"mediaType": "placeholder/value",
"description": "NOAA Data Management Plan for this record on InPort.",
"downloadURL": "https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48223.pdf",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "GCMD Keyword Forum Page",
"mediaType": "placeholder/value",
"description": "Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords",
"downloadURL": "https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "Full Metadata Record",
"mediaType": "placeholder/value",
"description": "View the complete metadata record on InPort for more information about this dataset.",
"downloadURL": "https://www.fisheries.noaa.gov/inport/item/48223",
"describedByType": "application/octet-steam"
},
{
"@type": "dcat:Distribution",
"title": "NOAA Office for Coastal Management Website",
"mediaType": "placeholder/value",
"description": "NOAA Office for Coastal Management Home Page",
"downloadURL": "https://coast.noaa.gov",
"describedByType": "application/octet-steam"
}
]
|
| identifier | gov.noaa.nmfs.inport:48223 |
| issued | 2014-06-06T00:00:00.000+00:00 |
| keyword |
[
"EARTH SCIENCE > AGRICULTURE > SOILS > SOIL EROSION",
"EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION",
"EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > RUNOFF",
"CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA",
"Environmental Monitoring",
"Erosion",
"R-Factor",
"RUSLE",
"RUSLE2",
"Rainfall-Runoff Erosivity",
"Revised Universal Soil Loss Equation",
"Alaska",
"Coastal zone",
"DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce",
"OpenNSPECT"
]
|
| landingPage | https://www.fisheries.noaa.gov/inport/item/48223 |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2014-06-06T00:00:00.000+00:00 |
| publisher |
{
"name": "Office for Coastal Management",
"@type": "org:Organization"
}
|
| references |
[
"https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48223.pdf"
]
|
| rights | otherRestrictions, unclassified |
| spatial | -123.346463,52.510506,167.930127,71.40623 |
| temporal | 1965-01-01T00:00:00+00:00/1975-01-01T00:00:00+00:00 |
| title | R-Factor for Alaska |
