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
-
https://coast.noaa.gov/data/digitalcoast/zip/R-Factor-AK.zip
ZIP -
GCMD Keyword Forum Page
TEXT/HTML -
Full Metadata Record
TEXT/HTML -
NOAA Office for Coastal Management Website
TEXT/HTML
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| @type | dcat:Dataset |
|---|---|
| accessLevel | non-public |
| contactPoint |
{
"fn": "NOAA Office for Coastal Management",
"@type": "vcard:Contact",
"hasEmail": "mailto:coastal.info@noaa.gov"
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|
| 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 |
[
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"format": "ZIP",
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"title": "GCMD Keyword Forum Page",
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"mediaType": "text/html",
"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",
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"description": "NOAA Office for Coastal Management Home Page",
"describedByType": "application/octet-stream"
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|
| identifier | https://data.noaa.gov/waf/NOAA/nos/ocm/iso/xml/48223.xml |
| 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"
}
|
| 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 |
