Originator: Spatial Analysis Unit, Carolina Population Center
Publication_Date: 1999
Title: South ISA Elevation Contours
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
This data set contains 20-meter elevation contours for the Southern Intensive Study Area (ISA) of the CPC Ecuador Projects, in the northern Oriente of Ecuador.
Purpose:
The elevation contours are used, in conjunction with point elevations, to create a raster digital elevation model (DEM).
Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 1991
Single_Date/Time:
Calendar_Date: 1993
Currentness_Reference: publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -77.002365
East_Bounding_Coordinate: -76.751947
North_Bounding_Coordinate: -0.169786
South_Bounding_Coordinate: -0.503617
Keywords:
Theme:
Theme_Keyword_Thesaurus: Ecuador
Theme_Keyword: elevation
Theme_Keyword: contours
Access_Constraints:
Data is available to the public, made possible through the NASA LBA program.
Use_Constraints:
There are no use constraints. However, potential users should be aware of possible ramifications of using the contours to create a DEM of too fine a resolution, given the interval of the contours.
Contours were digitized by Michelle Lown, Bonnie Kaserman, and Brandie Sullivan of the Spatial Analysis Unit, Carolina Population Center. Contours were edgematched and appended by Brian Frizzelle of the Spatial Analysis Unit, Carolina Population Center.
Security_Information:
Security_Classification: Unclassified
Native_Data_Set_Environment:
Microsoft Windows NT Version 4.0 (Build 1381) Service Pack 6; ESRI ArcCatalog 8.2.0.700
Cross_Reference:
Citation_Information:
Title: South ISA Point Elevations
Cross_Reference:
Citation_Information:
Title: South ISA Digital Elevation Model (DEM)
Cross_Reference:
Citation_Information:
Title: North ISA Elevation Contours
Cross_Reference:
Citation_Information:
Title: East ISA Elevation Contours
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribution was based on the elevations assigned to contours on the source map. There is 100% agreement for attribution between each digitized contour and its source contour. Accuracy of the attribution is dependent solely on the accuracy of the data source.
Logical_Consistency_Report: Arc topology exists.
Completeness_Report: Data are complete for the ISA.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Horizontal accuracy is assumed to be within the NMAS standards for a map of this scale.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Instituto Geográfico Militar de Ecuador
Publication_Date: 1993
Title: La Joya de los Sachas
Geospatial_Data_Presentation_Form: map
Other_Citation_Details: topographic map
Source_Scale_Denominator: 1:50,000
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1993
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: ec_topo
Source_Information:
Source_Citation:
Citation_Information:
Originator: Instituto Geográfico Militar de Ecuador
Publication_Date: 1991
Title: San Francisco de Orellana
Geospatial_Data_Presentation_Form: map
Other_Citation_Details: topographic map
Process_Step:
Process_Description: Contours were digitized from topographic maps, and attributed.
Process_Date: 1999
Process_Step:
Process_Description: The two contour coverages were edgematched and appended.
Attribute items are in typical ARC/INFO arc format. Attributes requiring additional explanation are: TYPE – 1 indicates that the contour elevation is a multiple of 100; 2 indicates that the contour elevation is not a multiple of 100 CTRLINE – The elevation value of the contour, in meters
