Pohnpei Extent of Coral Reefs

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Originator: University of Guam
Publication_Date: 20020101
Title: Pohnpei Extent of Coral Reefs
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: <http://www.islands.fm/atlas/#/pohnpei-state>
Description:
Abstract:
This dataset the extent of coral reefs around Pohnpei. The data layer shown here is a subset of Pohnpei base layer. The original data, so-called Digital Line Graphs (DLSs), were created by U.S. Geological Survey (USGS) for the 1:25,000-scale topographic maps (2001). The shoreline was modified by by University of Guam (UOG) (2017) based on 2016 Worldview-3 satellite imagery from Digital Globe. The dataset was slightly shifted and also updated (mainly around Kolonia and its vicinity).
Purpose: To show the extent of coral reefs around Pohnpei.
Supplemental_Information:
The dataset is included the Digital Atlas of Micronesia, module Pohnpei, by Island Research & Education Initiative (iREi), in collaboration with Water and Environmental Research Institute of the Western Pacific (WERI) University of Guam and partial funding from United States Geological Survey (USGS), under WRRI 104-B Program, project # 2016GU302B.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: Irregular
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 158.081255
East_Bounding_Coordinate: 158.3684
North_Bounding_Coordinate: 7.057857
South_Bounding_Coordinate: 6.758177
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: coral reef
Theme_Keyword: lagoon
Theme_Keyword: island
Theme_Keyword: Digital Line Graph
Theme_Keyword: DLG
Theme_Keyword: hydrography
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Pohnpei
Place_Keyword: Federated States of Micronesia (FSM)
Place_Keyword: U.S. Affiliated Pacific Islands (USAPI)
Place_Keyword: Caroline Islands
Place_Keyword: Micronesia
Place_Keyword: Northwestern Pacific
Place_Keyword: Pacific Ocean
Access_Constraints: None
Use_Constraints:
There are no expressed warranties associated with the release of these databases. Specifically, no warranty is made that the GIS data or any subsequent updates will be error free and no warranty is made regarding the positional or thematic accuracy of the GIS data. The GIS data and any features it depicts do not represent or confer any legal rights, privileges, benefits, boundaries or claims of any kind.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Guam
Contact_Person: Maria Kottermair
Contact_Position: Geospatial Coordinator
Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Drew Decker
Contact_Position: National Map Liaison for Pacific Region
Contact_Address:
Address_Type: mailing and physical
Address: 4165 Spruance Road
City: San Diego
State_or_Province: CA
Postal_Code: 92101
Country: US
Contact_Voice_Telephone: 619-225-6430
Contact_Electronic_Mail_Address: ddecker@usgs.gov
Data_Set_Credit:
Original dataset by U.S. Geological Survey (USGS); Partly updated by by University of Guam (UOG) .
Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.2.2.3552
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute accuracy is tested by manual comparison of the source with hard copy plots and/or symbolized display of the digital line graph on an interactive computer graphic system. Through inspection and queries, attempts were made to ensure completeness and consistency of attribute values.
Logical_Consistency_Report:
Topological requirements include the following: lines must begin and end at nodes, lines must connect to each other at nodes, lines do not extend through nodes, left and right areas are defined for each line element and are consistent throughout the file, and lines representing the limits of the file (neatline) are free of gaps.
Completeness_Report:
The completeness of the data is unknown but should be consistent with the level of information normally shown on U.S. Geological Survey 1:24,000-scale topographic maps.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The updated sections (mainly around Kolonia and Sokehs) are accurate within a few meters, the other areas are accurate within about 20-30 meters.
Quantitative_Horizontal_Positional_Accuracy_Assessment:
Horizontal_Positional_Accuracy_Explanation: Visual comparison with WorldView-3 satellite imagery.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: U.S. Geological Survey
Title: U.S. Geological Survey Digital Line Graph
Online_Linkage: https://earthexplorer.usgs.gov/
Source_Scale_Denominator: 24000
Type_of_Source_Media: None
Source_Citation_Abbreviation: DLG
Process_Step:
Process_Description:
Convert original DLG files (downloaded from EarthExplorer) to shapefiles: area, polyline, and point.
Process_Date: 20160526
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Drew Decker
Contact_Position: National Map Liaison for Pacific Region
Contact_Address:
Address_Type: mailing and physical
Address: 4165 Spruance Road
City: San Diego
State_or_Province: CA
Postal_Code: 92101
Country: US
Contact_Voice_Telephone: 619-225-6430
Contact_Electronic_Mail_Address: ddecker@usgs.gov
Process_Step:
Process_Description:
1. Projected to WGS84 UTM zone 57N; 2. Shifted dataset about 15.5 meters W to match WorldView-3 imagery (WV-3) better; 3. Extracted reef polygons; 4. Deleted neatlines; 5. Cleaned polygons using ET GeoWizard tools; 6. Updated polygons around the airport and adjusted dataset to new shoreline (phn_shoreline); 7. Formatted attribute table and added fields (name, source, etc).
Process_Date: 20170121
Source_Produced_Citation_Abbreviation: Pohnpei Shoreline
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Guam
Contact_Person: Maria Kottermair
Contact_Position: Geospatial Coordinator
Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Complete chain
Point_and_Vector_Object_Count: 792
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: phn_coral_reef
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Type
Attribute:
Attribute_Label: Area_m2
Attribute_Definition: Area in square meters
Attribute:
Attribute_Label: Area_ac
Attribute_Definition: Area in acres
Attribute:
Attribute_Label: Source
Attribute_Definition: Source of original dataset.
Attribute:
Attribute_Label: Notes
Overview_Description:
Entity_and_Attribute_Detail_Citation:
The USGS document Standards for Digital Line Graphs, Part 3: Attribute Codes, contains a detailed description of each attribute code and a reference to the associated map symbols on the map source materials. The document is available at <http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dlg-3/3dlg0798.pdf>. Other DLG Standards are available from <http://rockyweb.cr.usgs.gov/nmpstds/dlgstds.html>.
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Island Research & Education Initiative (iREi)
Contact_Address:
Address_Type: mailing
Address: P.O. Box PS 303
City: Palikir
State_or_Province: Pohnpei
Postal_Code: 96941
Country: FM
Contact_Voice_Telephone: 691.320.5212
Contact_Electronic_Mail_Address: irei@islandresearch.org
Distribution_Liability: See access and use constraints information.
Metadata_Reference_Information:
Metadata_Date: 20170715
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University of Guam
Contact_Person: Maria Kottermair
Contact_Position: Geospatial Coordinator
Contact_Electronic_Mail_Address: mariakottermair@triton.uog.edu
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.3 on Mon Aug 07 15:37:18 2017