R-Factor for Alaska
Office for Coastal Management
Data Set
(DS)
| ID: 48223
| Published / External
Created: 2017-11-14
|
Last Modified: 2024-02-20
Project (PRJ) | ID: 37234
ID: 48223
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
| * » Title | R-Factor for Alaska |
|---|---|
| Short Name | R-Factor_metadata_for_Alaska |
| * Status | Completed |
| Creation Date | |
| Revision Date | |
| • Publication Date | 2014-06-06 |
| * » Abstract |
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. |
| * Purpose |
These data are represented in raster format for use with the Open source Nonpoint Source Pollution and Erosion Comparison Tool (OpenNSPECT). |
| Notes |
10839 |
| Other Citation Details |
Fletcher, Joel E.; Huber, A. Leon; Haws, Frank W.; and Clyde, Calvin G., "Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II, Recommendations for Preparing Design Manuals and Appendices B, C, D, E, F, G, and H" (1977). Reports. P 119. |
| • Supplemental Information |
These data are derived from isoerodent maps published in Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). Fletcher, Joel E.; Huber, A. Leon; Haws, Frank W.; and Clyde, Calvin G., "Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II, Recommendations for Preparing Design Manuals and Appendices B, C, D, E, F, G, and H" (1977). Reports. P 119. |
| DOI (Digital Object Identifier) | |
| DOI Registration Authority | |
| DOI Issue Date |
Keywords
Theme Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > AGRICULTURE > SOILS > SOIL EROSION |
| Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > EROSION |
| Global Change Master Directory (GCMD) Science Keywords | EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > SURFACE WATER > SURFACE WATER PROCESSES/MEASUREMENTS > RUNOFF |
| ISO 19115 Topic Category | climatologyMeteorologyAtmosphere |
| None | Environmental Monitoring |
| None | Erosion |
| None | R-Factor |
| None | Rainfall-Runoff Erosivity |
| None | Revised Universal Soil Loss Equation |
| None | RUSLE |
| None | RUSLE2 |
Temporal Keywords
| Thesaurus | Keyword |
|---|---|
* Spatial Keywords
| Thesaurus | Keyword |
|---|---|
| Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA |
| None | Alaska |
| None | Coastal zone |
Stratum Keywords
| Thesaurus | Keyword |
|---|---|
Instrument Keywords
| Thesaurus | Keyword |
|---|---|
Platform Keywords
| Thesaurus | Keyword |
|---|---|
Physical Location
| • » Organization | Office for Coastal Management |
|---|---|
| • » City | Charleston |
| • » State/Province | SC |
| • Country | |
| • » Location Description |
Data Set Information
| * Data Set Scope Code | Data Set |
|---|---|
| • Data Set Type | |
| • Maintenance Frequency | None Planned |
| Maintenance Note | |
| » Data Presentation Form | Map (digital) |
| • Entity Attribute Overview | |
| Entity Attribute Detail Citation | |
| Entity Attribute Detail URL | |
| Distribution Liability |
Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners. |
| Data Set Credit | Acknowledgement of the NOAA Office for Coastal Management and Fletcher et al., (1977) would be appreciated in products derived from these data. |
Support Roles
| * » Support Role | Data Steward |
|---|---|
| * » Date Effective From | 2014-06-06 |
| Date Effective To | |
| Organization | NOAA Office for Coastal Management (NOAA/OCM) |
| Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address | coastal.info@noaa.gov |
| Phone | (843) 740-1202 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Distributor |
|---|---|
| * » Date Effective From | 2014-06-06 |
| Date Effective To | |
| Organization | NOAA Office for Coastal Management (NOAA/OCM) |
| Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address | coastal.info@noaa.gov |
| Phone | (843) 740-1202 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Metadata Contact |
|---|---|
| * » Date Effective From | 2014-06-06 |
| Date Effective To | |
| Organization | NOAA Office for Coastal Management (NOAA/OCM) |
| Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address | coastal.info@noaa.gov |
| Phone | (843) 740-1202 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | Point of Contact |
|---|---|
| * » Date Effective From | 2014-06-06 |
| Date Effective To | |
| Organization | NOAA Office for Coastal Management (NOAA/OCM) |
| Address |
2234 South Hobson Ave Charleston, SC 29405-2413 |
| Email Address | coastal.info@noaa.gov |
| Phone | (843) 740-1202 |
| Fax | |
| Mobile | |
| URL | https://coast.noaa.gov |
| Business Hours | |
| Contact Instructions |
| * » Support Role | |
|---|---|
| * » Date Effective From | |
| Date Effective To | |
| * » Contact | |
| * Contact Instructions |
| * » Support Role | |
|---|---|
| * » Date Effective From | |
| Date Effective To | |
| * » Contact | |
| * Contact Instructions |
| * » Support Role | |
|---|---|
| * » Date Effective From | |
| Date Effective To | |
| * » Contact | |
| * Contact Instructions |
Extents
| Currentness Reference | Ground Condition |
|---|
Extent Group 1
| Extent Description |
|---|
Extent Group 1 / Geographic Area 1
| * » W° Bound | 167.930127 |
|---|---|
| * » E° Bound | -123.346463 |
| * » N° Bound | 71.40623 |
| * » S° Bound | 52.510506 |
| * » Description |
Extent Group 1 / Vertical Extent
| EPSG Code | |
|---|---|
| Vertical Minimum | |
| Vertical Maximum |
Extent Group 1 / Time Frame 1
| * » Time Frame Type | Range |
|---|---|
| * » Start | 1965 |
| End | 1975 |
| Alternate Start As Of Info | |
| Alternate End As Of Info | |
| Description |
Spatial Information
Spatial Resolution
| Angular Distance | |
|---|---|
| Angular Distance Units | |
| Horizontal Distance | |
| Horizontal Distance Units | |
| Vertical Distance | |
| Vertical Distance Units | |
| Equivalent Scale Denominator | |
| Level of Detail Description |
Spatial Representation
| Grid Representation Used? | Yes |
|---|---|
| Vector Representation Used? | |
| Text / Table Representation Used? | |
| TIN Representation Used? | |
| Stereo Model Representation Used? | |
| Video Representation Used? |
Grid Representation
| Dimension Count | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cell Geometry | |||||||||||||
| Transformation Parameter Available? | |||||||||||||
Axis Dimension |
|||||||||||||
|
|||||||||||||
Axis Dimension |
|||||||||||||
|
|||||||||||||
Vector Representation
| Topology Level | |
|---|---|
| Complex Object Present? | |
| Complex Object Count | |
| Composite Object Present? | |
| Composite Object Count | |
| Curve Object Present? | |
| Curve Object Count | |
| Point Object Present? | |
| Point Object Count | |
| Solid Object Present? | |
| Solid Object Count | |
| Surface Object Present? | |
| Surface Object Count |
Reference Systems
Reference System
| EPSG Code | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Horizontal Resolution |
|||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Vertical Resolution |
|||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
Access Information
| Data License | |
|---|---|
| Data License URL | |
| Data License Statement | |
| * » Security Class | Unclassified |
| * Security Classification System | |
| Security Handling Description | |
| • Data Access Policy | |
| » Data Access Procedure | |
| • » Data Access Constraints |
None |
| • Data Use Constraints |
None |
| Metadata Access Constraints | |
| Metadata Use Constraints |
Distribution Information
| Start Date | |
|---|---|
| » Download URL | https://coast.noaa.gov/data/digitalcoast/zip/R-Factor-AK.zip |
| Distributor | NOAA Office for Coastal Management (NOAA/OCM) (2014-06-06 - Present) |
| File Name | |
| Description | |
| File Date/Time | |
| File Type (Deprecated) | |
| Distribution Format | |
| File Size | |
| Application Version | |
| Compression | |
| Review Status |
| Start Date | |
|---|---|
| End Date | |
| » Download URL | |
| Distributor | |
| File Name | |
| Description | |
| File Date/Time | |
| File Type | |
| FGDC Content Type | |
| File Size | |
| Application Version | |
| Compression | |
| Review Status |
| Start Date | |
|---|---|
| End Date | |
| » Download URL | |
| Distributor | |
| File Name | |
| Description | |
| File Date/Time | |
| File Type | |
| FGDC Content Type | |
| File Size | |
| Application Version | |
| Compression | |
| Review Status |
| Start Date | |
|---|---|
| End Date | |
| » Download URL | |
| Distributor | |
| File Name | |
| Description | |
| File Date/Time | |
| File Type | |
| FGDC Content Type | |
| File Size | |
| Application Version | |
| Compression | |
| Review Status |
Archive Information
| Location | |
|---|---|
| File Identifier | |
| File Name | |
| URL | |
| Description | |
| DOI | |
| Archive Date | |
| Archive Update Frequency |
| Location | |
|---|---|
| File Identifier | |
| File Name | |
| URL | |
| Description | |
| DOI | |
| Archive Date | |
| Archive Update Frequency |
| Location | |
|---|---|
| File Identifier | |
| File Name | |
| URL | |
| Description | |
| DOI | |
| Archive Date | |
| Archive Update Frequency |
URLs
| URL | https://coast.noaa.gov/digitalcoast/tools/qnspect.html |
|---|---|
| Name | QNSPECT |
| URL Type | Online Resource |
| File Resource Format | |
| Description |
| URL | |
|---|---|
| Name | |
| URL Type | |
| File Resource Format | |
| Description |
| URL | |
|---|---|
| Name | |
| URL Type | |
| File Resource Format | |
| Description |
| URL | |
|---|---|
| Name | |
| URL Type | |
| File Resource Format | |
| Description |
Activity Log
| Activity Time | 2016-05-23 |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
Date that the source FGDC record was last modified. |
| Activity Time | 2017-11-14 |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
| Activity Time | 2018-02-08 |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
Partial upload of Positional Accuracy fields only. |
| Activity Time | |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
| Activity Time | |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
| Activity Time | |
|---|---|
| Activity Type | |
| Responsible Party | |
| Description |
Issues
| Issue Date | |
|---|---|
| Author | |
| Issue |
| Issue Date | |
|---|---|
| Author | |
| Issue |
| Issue Date | |
|---|---|
| Author | |
| Issue |
Technical Environment
| Description |
MapWindow GIS 8.x |
|---|
Data Quality
| Representativeness | |
|---|---|
| Accuracy |
The cell values in this product represent R-Factor which is an erosivity index for rainfall and runoff. The units are (hundreds ft-tonf-in)/(ac-h-yr). |
| Analytical Accuracy | |
| Horizontal Positional Accuracy |
This map is an approximation of spatial rainfall-runoff values |
| Vertical Positional Accuracy |
None |
| Quantitation Limits | |
| Bias | |
| Comparability | |
| Completeness Measure |
Cloud Cover: 0 |
| Precision | |
| Analytical Precision | |
| Field Precision | |
| Sensitivity | |
| Detection Limit | |
| Completeness Report |
All pixels within Alaska boundary contain R-Factor values. |
| Conceptual Consistency |
Tests for logical consistency indicate that all row and column positions in the selected latitude/longitude window contain data. Conversion and integration with vector files indicates that all positions are consistent with earth coordinates covering the same area. |
| » Quality Control Procedures Employed |
Data Management
| » Have Resources for Management of these Data Been Identified? | |
|---|---|
| » Approximate Percentage of Budget for these Data Devoted to Data Management | |
| » Do these Data Comply with the Data Access Directive? | |
| » Is Access to the Data Limited Based on an Approved Waiver? | |
| » If Distributor (Data Hosting Service) is Needed, Please Indicate | |
| » Approximate Delay Between Data Collection and Dissemination | |
| » If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
|
| » Actual or Planned Long-Term Data Archive Location | |
| » If World Data Center or Other, Specify | |
| » If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
|
| » Approximate Delay Between Data Collection and Archiving | |
| » How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
|
Lineage
| » Lineage Statement |
|---|
Sources
| Citation Title | R-Factor for Alaska |
|---|---|
| Contact Role Type | |
| Contact Type | |
| Contact Name | NOAA, National Ocean Service, Office for Coastal Management |
| Publish Date | |
| Extent Type | Range |
| Extent Start Date/Time | 1965 |
| Extent End Date/Time | 1975 |
| Scale Denominator | 100000 |
| Citation URL | |
| Citation URL Name | |
| Citation URL Description | |
| Source Contribution |
Derived from isoerodent maps (Fletcher et al., 1977) | Source Geospatial Form: raster digital data | Type of Source Media: disc |
| Citation Title | |
|---|---|
| Contact Role Type | |
| Contact Type | |
| Contact Name | |
| Publish Date | |
| Extent Type | |
| Extent Start Date/Time | |
| Extent End Date/Time | |
| Citation URL | |
| Citation URL Name | |
| Citation URL Description | |
| Scale Denominator |
| Citation Title | |
|---|---|
| Contact Role Type | |
| Contact Type | |
| Contact Name | |
| Publish Date | |
| Extent Type | |
| Extent Start Date/Time | |
| Extent End Date/Time | |
| Citation URL | |
| Citation URL Name | |
| Citation URL Description | |
| Scale Denominator |
| Citation Title | |
|---|---|
| Contact Role Type | |
| Contact Type | |
| Contact Name | |
| Publish Date | |
| Extent Type | |
| Extent Start Date/Time | |
| Extent End Date/Time | |
| Citation URL | |
| Citation URL Name | |
| Citation URL Description | |
| Scale Denominator |
Process Steps
| Process Step Number | 1 |
|---|---|
| » Description |
The rainfall-runoff erosivity factor was estimated from the R-Factor map for Alaska given in Runoff Estimates for Small Rural Watersheds and Development of a Sound Design method. Volume II. (Fletcher et al., 1977). A line shapefile approximation of the printed map was generated via "heads-up" digitizing. The final raster map was produced using the Topo to Raster command in ESRI ArcGIS 10.x. |
| Process Date/Time | 2014-01-01 00:00:00 |
| Process Contact | |
| Phone (Voice) | |
| Email Address | |
| Source |
| Process Step Number | |
|---|---|
| » Description | |
| Process Date/Time | |
| Process Contact | |
| Phone (Voice) | |
| Email Address | |
| Source |
| Process Step Number | |
|---|---|
| » Description | |
| Process Date/Time | |
| Process Contact | |
| Phone (Voice) | |
| Email Address | |
| Source |
| Process Step Number | |
|---|---|
| » Description | |
| Process Date/Time | |
| Process Contact | |
| Phone (Voice) | |
| Email Address | |
| Source |
Acquisition Information
Instruments
| Instrument Unavailable Reason |
|---|
| Identifier | |
|---|---|
| Docucomp UUID | |
| Instrument / Gear | |
| Instrument Type | |
| Description |
| Identifier | |
|---|---|
| Docucomp UUID | |
| Instrument / Gear | |
| Instrument Type | |
| Description |
| Identifier | |
|---|---|
| Docucomp UUID | |
| Instrument / Gear | |
| Instrument Type | |
| Description |
Platforms
| Platform Unavailable Reason |
|---|
| Identifier | |||||||
|---|---|---|---|---|---|---|---|
| Docucomp UUID | |||||||
| Description | |||||||
Mounted Instruments |
|||||||
|
|||||||
| Identifier | |||||||
|---|---|---|---|---|---|---|---|
| Docucomp UUID | |||||||
| Description | |||||||
Mounted Instruments |
|||||||
|
|||||||
| Identifier | |||||||
|---|---|---|---|---|---|---|---|
| Docucomp UUID | |||||||
| Description | |||||||
Mounted Instruments |
|||||||
|
|||||||
FAQs
| Date | |
|---|---|
| Author | |
| Question | |
| Answer |
Related Items
| Item Type | Relationship Type | Title |
|---|---|---|
Catalog Details
| Catalog Item ID | 48223 |
|---|---|
| Metadata Record Created By | Anne Ball |
| Metadata Record Created | 2017-11-14 14:28+0000 |
| Metadata Record Last Modified By | Brianna Key |
| » Metadata Record Last Modified | 2024-02-20 21:56+0000 |
| Metadata Record Published | 2018-02-08 |
| Owner Org | OCM |
| Metadata Publication Status | Published Externally |
| Do Not Publish? | N |
| Metadata Workflow State | Published / External |
| Metadata Last Review Date | 2018-02-08 |
| Metadata Review Frequency | 1 Year |
| Metadata Next Review Date | 2019-02-08 |
| Tags |
|---|