National Elevation Dataset (Pohnpei)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey (USGS), EROS Data Center
Publication_Date: 1999
Title: National Elevation Dataset (Pohnpei)
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: U.S. Geological Survey
Online_Linkage: \\thunder\array\projects\pacisl\pohnpei\raster\ppt_14x100
Description:
Abstract:
The U.S. Geological Survey has developed a National Elevation Dataset (NED). The NED is a seamless mosaic of best-available elevation data. The 7.5-minute elevation data for the conterminous United States are the primary initial source data. In addition to the availability of complete 7.5-minute data, efficient processing methods were developed to filter production artifacts in the existing data, convert to the NAD83 datum, edge-match, and fill slivers of missing data at quadrangle seams. One of the effects of the NED processing steps is a much-improved base of elevation data for calculating slope and hydrologic derivatives. The specifications for the NED 1 arc second and 1/3 arc second data are: Geographic coordinate system Horizontal datum of NAD83, except for AK which is NAD27 Vertical datum of NAVD88, except for AK which is NAVD29 Z units of meters

The PRISM Group at Oregon State University first converted all elevation DEM values that were between zero and one to the whole integer value of one. Then we converted all values to the nearest whole integer, and last we applied a Gaussian filter (Barnes, S.L. 1964: A technique for maximizing details in numerical weather map analysis. J. Appl. Meteorol., 3, 396-409.) to the original NED 1 arc second DEM creating a 3 arc second version of the DEM that was used in our modeling process.

Purpose:
Geospatial elevation data are utilized by the scientific and resource management communities for global change research, hydrologic modeling, resource monitoring, mapping, and visualization applications.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19990201
Beginning_Time: unknown
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 158.02250000000001
East_Bounding_Coordinate: 158.42317300000002
North_Bounding_Coordinate: 7.05348799
South_Bounding_Coordinate: 6.7452779999
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD Parameter Keywords
Theme_Keyword: EARTH SCIENCE
Access_Constraints: None
Use_Constraints: None
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chris Daly or Mike Halbleib
Contact_Address:
Address_Type: mailing address
Address: Strand Ag Hall 326, PRISM Group, Oregon State University
City: Corvallis
State_or_Province: Oregon
Postal_Code: 97331-2209
Country: USA
Contact_Voice_Telephone: (541) 737-2531
Contact_Facsimile_Telephone: (541) 737-5710
Contact_Electronic_Mail_Address: halbleib@coas.oregonstate.edu
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780

Data_Quality_Information:
Lineage:

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 370
Column_Count: 481
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Geographic_Coordinate_Units: Decimal degrees
Planar:
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 0.000833
Ordinate_Resolution: 0.000833
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Elevation (z value)
Entity_Type_Definition: Meters

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chris Daly or Mike Halbleib
Contact_Organization: PRISM Group
Contact_Address:
Address_Type: mailing address
Address: Strand Ag Hall 326, PRISM Group, Oregon State University
City: Corvallis
State_or_Province: Oregon
Postal_Code: 97331
Country: USA
Contact_Voice_Telephone: 541-737-2531
Contact_Electronic_Mail_Address: halbleib@coas.oregonstate.edu
Resource_Description: Downloadable Data
Distribution_Liability:
This digital data set publication was prepared by the PRISM Group. Neither the PRISM Group nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or misuse of the data, or for damage, transmission of viruses or computer contamination through the distribution of these data sets or for the usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the PRISM Group or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the PRISM Group or any agency thereof.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.243

Metadata_Reference_Information:
Metadata_Date: 20061115
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: PRISM Group
Contact_Person: Mike Halbleib
Contact_Address:
Address_Type: Strand Ag Hall 326, PRISM Group, Oregon State University
City: Corvallis
State_or_Province: Oregon
Postal_Code: 97331-2209
Contact_Voice_Telephone: 541-737-2531
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile

Generated by mp version 2.8.6 on Wed Nov 15 13:43:02 2006