GeologicSurficial_LANDFORMS

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: Charles Ferree
Publication_Date: 20000503
Publication_Time: Unknown
Title: GeologicSurficial_LANDFORMS
Edition: 2000
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Landforms in Vermont from the VT biodiversity project
Publication_Information:
Publication_Place: Burlington, VT
Publisher: David E. Capen, UVM
Other_Citation_Details: Tile Structure - STATE
Description:
Abstract:
This is a raster (cell-based) dataset depicting landforms in Vermont. Cells are 30 meters. Landforms are topographic units of landscapes that often occur in characteristic combinations and configurations. Eighteen separate landforms (e.g., upper side slope, wetland, cove or draw) are defined for Vermont. They were derived from 30m USGS digital elevation models following a technique described by Fels and Matson (1997); see "Supplemental."
Purpose:
Landform exercises considerable control over ecosystem process. The landforms in this datset were developed as part of a project to analyze landscape diversity across Vermont. This in turn was part of an effort to map patterns of biodiversity statewide. These are not landforms in the sense that most ecosystem geographers use the term, but may be more accurately described as topographic facets which define landforms when looked at in combination. They represent a microscale at which edaphic and topoclimatic variability is expressed. This variability is seen to be an important factor in the distribution of biotic communites.
Supplemental_Information:
The user may refer to the following paper for a detailed description of the process of the derivation of landforms from DEMs. Fels, J., and K.C. Matson. 1997. A cognitively-based approach for hydrogeomorphic land classification using digital terrain models. Proceedings, Fourth International Conference on Integrating GIS and Environmental Modeling. Santa Fe, NM. www.ncgia.ucsb.edu/conf/SANTA_FE_CD-ROM/ sf_papers/fels_john/fels_and_matson.html See also-- Technical Report of the Vermont Biodiversity Project.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Late 20th century
Currentness_Reference: Ground Condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.454162
East_Bounding_Coordinate: -71.465281
North_Bounding_Coordinate: 45.018361
South_Bounding_Coordinate: 42.722789
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: geoscientificInformation
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Landform, landscape diversity
Theme_Keyword: topographic diversity
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Vermont
Access_Constraints:
VCGI and the state of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Dr. David E. Capen
Contact_Organization: UVM School of Natural Resources
Contact_Position: Professorof Wildlife Biology
Contact_Address:
Address_Type: mailing and physical address
Address:
Spatial Analysis Lab, UVM School of Natural Resources, Aiken Center, Room 220
City: Burlington
State_or_Province: VT
Postal_Code: 05405
Country: USA
Contact_Voice_Telephone: 802-656-3324
Contact_Facsimile_Telephone: 802-656-8683
Contact_Electronic_Mail_Address: dcapen@nature.snr.uvm.edu
Data_Set_Credit:
Spatial Analysis Lab, UVM School of Natural Resources; Charles Ferree, analyst
Security_Information:
Security_Classification_System: N/A
Security_Classification: Unclassified
Security_Handling_Description: No security considerations
Native_Data_Set_Environment: Arc/Info
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The landform analysis procedure was performed several times. After each modeling attempt, refinements and adjustments were made and the process repeated. Results were mapped on screen, and visualized with elevation contours and shaded relief, mostly in areas with which the analyst was familiar. The procedure was deemed to be complete and successful when a single methodology, applied across the whole state, produced micro- and mesoscale landform units of ecological significance, in all of several differing landscape types (varying topographic settings). Landform units were described after they were derived analytically. The process was entirely machine-driven, and human intervention was not required to attribute landforms. Field testing to verify the accuracy of landform descriptions has not been performed. Minimum mapping unit for the 4 landforms most often associated with hills is 0.9 acres (0.4 hectares). MMU for all other landforms is 0.4 acres (0.2 ha). Grid cells are 30 meters. Water landforms (stream,river,lake/reservoir) are from the USGS Digital Line Graphs of RF 1/100,000. These data were gridded and superimposed on the algorithmically derived landforms. Errors inherent in the DLG data and in the vector/raster data transformation are carried over into the current dataset. Wetland landforms were derived from two sources-- digital USFW National Wetlands Inventory data (VCGI) and the "pluvial" class polygons on maps of surficial geologic features in Vermont (mapped in the 1950's for the Vermont Geological Survey at RF 1/62,500). These, too, were gridded and superimposed. See documentation for VCGI //www.vcgi.org/cfdev2/warehouse/ data/meta/VSWInn.htm). Accuracy for the surficial data has not been assessed, but the data are known to be coarse. Various manipulations, including the process of getting the original paper maps into digital format, have also added to data inaccuracies.
Logical_Consistency_Report: None
Completeness_Report: No updates or revisions to this data set are planned.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Field testing to verify the accuracy of landform location and conformation has not been performed. As USGS 30 meter digital elevation models were the principal input to the algorithm that generated most of these landforms, accuracy standards for the DEMs largely determine accuracy of landforms. See the following reference for an accuracy report for the DEMs-- USGS. 1993. Digital elevation models. Data users guide 5. US Department of the Interior, US Geological Survey. Reston, VA. Water and wetland landforms came from 3 other sources-- USGS Digital Line Graphs (RF 1/100,000), USFW National Wetlands Inventory data, and surficial geology data from the Vermont Geological Survey. See "Attribute Accuracy" above.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Field testing to verify the accuracy of landform location and conformation has not been performed. As these landforms are derived mostly from USGS 30 meter digital elevation models, accuracy standards for these elevation models determine accuracy of landforms. Refer to the following for an accuracy report for the DEMs-- USGS. 1993. Digital elevation models. Data users guide 5. US Department of the Interior, US Geological Survey. Reston, VA.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS(comp.)
Publication_Date: Various
Publication_Time: Unknown
Title: USGS 30m Digital Elevation Models
Geospatial_Data_Presentation_Form: model
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Source_Scale_Denominator: 24000
Type_of_Source_Media: digital elevation models
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Mid to late 20th century
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: DEM/7.5 minute
Source_Contribution: Elevation data on 30 meter grid
Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS
Publication_Date: Unknown
Publication_Time: Unknown
Title: 1/100,000 digital line graphs
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Reston, VA
Publisher: USGS
Source_Scale_Denominator: 100,000
Type_of_Source_Media: digital-- on-line
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Mid to late 20th c.
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: USGS-DLGs
Source_Contribution: Hydrography data
Source_Information:
Source_Citation:
Citation_Information:
Originator: VT Geological Survey
Publication_Date: 1969
Title: Surficial Geology of VT
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:
Publication_Place: Waterbury, VT
Publisher: VT Geological Survey
Source_Scale_Denominator: 250,000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: Mid 20th century
Source_Currentness_Reference: Publication Date
Source_Citation_Abbreviation: VGS-- Surficial
Source_Contribution: Pluvial (wetland) polygons
Process_Step:
Process_Description:
Documented derived grid for distribution-- Charles Ferree, UVM/SAL
Source_Used_Citation_Abbreviation: Landforms
Process_Date: 20000508
Process_Time: Unknown
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 8587
Column_Count: 5326
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Grid_Coordinate_System:
Grid_Coordinate_System_Name: State Plane Coordinate System 1983
State_Plane_Coordinate_System:
SPCS_Zone_Identifier: 4400 (USGS), 5526(ESRI)
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.99996
Longitude_of_Central_Meridian: -072.500000
Latitude_of_Projection_Origin: +42.500000
False_Easting: 500000
False_Northing: 0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000
Ordinate_Resolution: 0.000
Planar_Distance_Units: Meters
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.25722210
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: landforms.vat
Entity_Type_Definition: Value Attribute Table containing landform codes
Entity_Type_Definition_Source: Spatial Analysis Lab, SNR, UVM
Attribute:
Attribute_Label: VALUE
Attribute_Definition:
Landform code; item definition 4,10,B; landforms corresponding to value item values are listed below; order of listing is approximate order you would expect them to occur in a landscape, from high topographic position to low-- 11 Flat summit or ridgetop 12 Slope crest or ridge-- gentle grade 13 Slope crest or ridge-- moderately steep 4 Steep slope 5 Cliff 21 Slight convexity-- broad/low 22 Low rounded summit or ridge-- in wetlands, a kamic hill 23 Upper sideslope or rounded ridge 33 Lower sideslope or gentle draw 32 Valley or toe slope-- gentle grade 31 Flats 43 Cove or steep draw 42 Lower slope of steep draw or valley, or bench 41 Flat in valley (usually water) 50 Stream 51 Double-banked river 52 Lake/reservoir 55 Wetland
Attribute_Definition_Source: UVM/SAL
Attribute_Domain_Values:
Codeset_Domain:
Codeset_Name: Landform
Codeset_Source: UVM/SAL
Attribute_Value_Accuracy_Information:
Attribute_Value_Accuracy: Various
Attribute_Value_Accuracy_Explanation:
No formal field assessment of attribution accuracy was performed. See "Data Quality/Attribute Accuracy" and "Data Quality/Positional Accuracy" above.
Attribute:
Attribute_Label: COUNT
Attribute_Definition:
Number of grid cells with a given value; item definition 4,10,B
Attribute_Definition_Source: Computed
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Integer
Enumerated_Domain_Value_Definition: Internally computed
Enumerated_Domain_Value_Definition_Source: N/A
Overview_Description:
Entity_and_Attribute_Overview:
Raster data set-- 30 meter grid cells. Eighteen classes of topographic units (landforms) which are meant to reflect the scale at which topo-edaphic variability is expressed across the landscape.
Entity_and_Attribute_Detail_Citation: See "Attribute Definition" above
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr, Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: VT
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone:
Contact_Electronic_Mail_Address: vcgi@vermont.gov
Hours_of_Service: 9am - 5pm, M-F
Resource_Description: GeologicSurficial_LANDFORMS
Distribution_Liability:
VCGI and the State of Vermont make no representations of any kind, including but not limited to the warranties of merchantability or fitness for a particular use, nor are any such warranties to be implied with respect to the data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: SHP
Format_Specification: ESRI Shapefile format (compressed to ZIP format)
Format_Information_Content: geospatial data
File_Decompression_Technique: ZIP decompression software
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
https://maps.vcgi.vermont.gov/gisdata/vcgi/packaged_zips/GeologicSurficial_LANDFORMS.zip
Access_Instructions: Download from web site.
Offline_Option:
Offline_Media: USB drive
Fees:
No charge when downloading from the internet, and when no custom processing is required.
Ordering_Instructions: Send an email describing data request to vcgi@vermont.gov
Turnaround: About 5 days.
Custom_Order_Process: Send an email describing data request to vcgi@vermont.gov
Technical_Prerequisites: GIS Software
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20001023
Time_of_Day: Unknown
Metadata_Reference_Information:
Metadata_Date: 20000509
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: VT Center for Geographic Information
Contact_Person: GIS Database Administrator
Contact_Address:
Address_Type: Mailing and Physical Address
Address: 1 National Life Dr, Dewey Building, 2nd Floor
City: Montpelier
State_or_Province: VT
Postal_Code: 05620-2001
Country: USA
Contact_Voice_Telephone: (802) 585-0820
Contact_TDD/TTY_Telephone: None
Contact_Facsimile_Telephone:
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: None
Metadata_Use_Constraints: None
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: Unclassified
Metadata_Security_Handling_Description: No security considerations
Generated by mp version 2.9.22 on Thu Aug 25 20:52:18 2022