Roughness grid calculated in ARC/Info version 7.0.2 from USGS 30m DEM of Los Olivos quadrangle

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: USGS (modified by Karen Holmes, 1999)
Publication_Date: 19790701
Title:
Roughness grid calculated in ARC/Info version 7.0.2 from USGS 30m DEM of Los Olivos quadrangle
Geospatial_Data_Presentation_Form: map
Online_Linkage: <http://edcwww.cr.usgs.gov/nsdi/html/dem75>
Description:
Abstract:
"roughness" of the terrain calculated in ARC/Info version7.0.2 using FOCALSTD command on cropped USGS DEM (see text below). This calculates the standard deviation of grid values (in this case elevation) in a moving window for each cell. I did this using a circular window with a radius of 10 cells, or 300meters. (see Arc Help references.) (From USGS web document) Digital Elevation Model (DEM) is the terminology adopted by the USGS to describe terrain elevation data sets in a digital raster form. The standard DEM consists of a regular array of elevations cast on a designated coordinate projection system. The DEM data are stored as a series of profiles in which the spacing of the elevations along and between each profile is in regular whole number intervals. The normal orientation of data is by columns and rows. Each column contains a series of elevations ordered from sourth to north with the order of the columns from east to west. THe DEM is formatted as one ASCII header record (A-record) , followed by a series of profile records (B- records) each of which include a shorth B-record header followed by a series of ASCII integer elevations per each profile. The last physical record of the DEM is an accuracy record (C- record). 7.5-minute DEM (30- by 30-m data spacing, cast on Universal Transverse Mercator (UTM) projection). Provides coverage in 7.5 by 7.5 minute blocks. Each product provides the same coverage as a standard USGS 7.5minute quadrangle without over edge.
Purpose:
Supplemental_Information:
***** Spatial Reference Information (Beg) *****
Projection Parameters
Projection:  UTM
Zone:  10
Datum:  NAD83
Units:  Meters
Spheroid:  GRS1980
x-minimum:  768129.000
x-maximum:  774369.000
y-minimum:  3841407.250
y-maximum:  3848607.250
Spatial Information
Raster:
Number of Columns: 208
Number of Rows: 240
Pixel Resolution (m): 30
Data Type: byte
***** Spatial Reference Information (End) *****

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date:
Ending_Date: present
Currentness_Reference:
Status:
Progress: Complete
Maintenance_and_Update_Frequency:
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate:
East_Bounding_Coordinate:
North_Bounding_Coordinate:
South_Bounding_Coordinate:
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: DEM
Theme_Keyword: roughness
Theme_Keyword: relief
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Los Olivos
Place_Keyword: Santa Barbara county
Place_Keyword: California
Place_Keyword: Sedgwick
Access_Constraints:
Use_Constraints:

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster

Metadata_Reference_Information:
Metadata_Date: 19990626
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Karen Holmes
Contact_Organization: UCSB Geography Dept.
Contact_Address:
Address_Type: mailing and physical address
Address:
c/o Reserve Director Sedgwick Natural Reserve Marine Science Institute University of California Santa Barbara, CA 93106
City:
State_or_Province:
Postal_Code:
Contact_Voice_Telephone:
Contact_Electronic_Mail_Address: karen@geog.ucsb.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998

Generated by mp version 2.2.0 on Mon Jun 28 11:42:30 1999