eden_em_oct07_400m
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: U.S. Geological Survey
- Publication_Date: 200710
- Title: eden_em_oct07_400m
- Geospatial_Data_Presentation_Form: raster digital data
- Online_Linkage: <http://sofia.usgs.gov/eden/models/groundelevmod.php>
- Description:
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- Abstract:
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This is the 1st release of the third version of an Everglades Depth Estimation Network (EDEN) digital elevation model (DEM) generated from certified airborne height finder (AHF) and airboat collected ground surface elevations for the Greater Everglades Region. This version includes all data collected and certified by the USGS prior to the conclusion of the AHF collection process. It differs from the previous elevation model (EDEN_EM_JAN07) in that the modeled area of WCA3N (all the WCA3A area north of I-75) is increased while the modeled area of the Big Cypress National Preserve (BNCP) has been both refined and reduced to the region where standard error of cross-validation points falls below 0.16 meters. EDEN offers a consistent and documented dataset that can be used to guide large-scale field operations, to integrate hydrologic and ecological responses, and to support biological and ecological assessments that measure ecosystem responses to Comprehensive Everglades Restoration Plan. To produce historic and near-real time maps of water depths, the EDEN requires a system-wide DEM of the ground surface.
- Purpose:
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These data were specifically created for the development of water depth information using interpolated water surfaces from the EDEN stage data network.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 1995
- Ending_Date: 2007
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: As needed
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -81.363536
- East_Bounding_Coordinate: -80.22176
- North_Bounding_Coordinate: 26.683613
- South_Bounding_Coordinate: 25.229604
- Keywords:
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- Theme:
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- Theme_Keyword_Thesaurus: none
- Theme_Keyword: digital elevation model
- Theme_Keyword: mapping
- Theme_Keyword: DEM
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: elevation
- Theme_Keyword: imageryBaseMapsEarthCover
- Theme_Keyword: 006
- Theme_Keyword: 010
- Place:
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- Place_Keyword_Thesaurus:
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Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, National Institute of Standards and Technology
- Place_Keyword: United States
- Place_Keyword: US
- Place:
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- Place_Keyword_Thesaurus:
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U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, DC, NIST
- Place_Keyword: Florida
- Place_Keyword: FL
- Place:
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- Place_Keyword_Thesaurus:
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Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology
- Place_Keyword: Broward County
- Place_Keyword: Collier County
- Place_Keyword: Miami-Dade County
- Place_Keyword: Monroe County
- Place_Keyword: Palm Beach County
- Place:
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- Place_Keyword_Thesaurus: USGS Geographic Names Information System
- Place_Keyword: Everglades National Park
- Place_Keyword: Big Cypress National Preserve
- Place:
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- Place_Keyword_Thesaurus: none
- Place_Keyword: Central Everglades
- Place_Keyword: Greater Lake Okeechobee
- Place_Keyword: SW Big Cypress
- Place_Keyword: WCA1
- Place_Keyword: Water Conservation Area 1
- Place_Keyword: WCA2
- Place_Keyword: Water Conservation Area 2
- Place_Keyword: WCA3
- Place_Keyword: Water Conservation Area 3
- Place_Keyword: Greater Everglades region
- Access_Constraints:
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These data were produced for EDEN operational water depth estimation and applications.
- Use_Constraints:
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The user is cautioned that this elevation model was produced specifically for EDEN applications and is based on input data of approximately 400m sample spacing and +/- 15cm vertical accuracy. No statement of appropriateness for uses other than that intended are implied.
- Point_of_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: John W. Jones
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
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- Address_Type: mailing address
- Address: 521 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Country: USA
- Contact_Voice_Telephone: 703 648-5543
- Contact_Electronic_Mail_Address: jwjones@usgs.gov
- Browse_Graphic:
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- Browse_Graphic_File_Name: <http://sofia.usgs.gov/eden/models/groundelevmod.php>
- Browse_Graphic_File_Description: graphic showing the coverage of EDEN_EM_OCT07
- Browse_Graphic_File_Type: php
- Browse_Graphic:
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- Browse_Graphic_File_Name:
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<http://sofia.usgs.gov/publications/fs/2006-3087/images/figure2.jpg>
- Browse_Graphic_File_Description:
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location of Everglades Depth Estimation Network (EDEN) gaging stations
- Browse_Graphic_File_Type: JPEG
- Native_Data_Set_Environment: ESRI ArcGIS 9.1 ARCG .e00 grid interchange format
- Cross_Reference:
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- Citation_Information:
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- Originator: Pamela Telis
- Publication_Date: 2006
- Title:
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The Everglades Depth Estimation Network (EDEN) for support of ecological and biological assessments
- Geospatial_Data_Presentation_Form: fact sheet
- Series_Information:
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- Series_Name: USGS Fact Sheet
- Issue_Identification: 2006-3087
- Publication_Information:
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- Publication_Place: St. Petersburg, FL
- Publisher: U.S. Geological Survey
- Online_Linkage: <http://sofia.usgs.gov/publications/fs/2006-3087/index.html>
- Cross_Reference:
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- Citation_Information:
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- Originator: Jones, J. W.
- Publication_Date: 2001
- Title:
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Image and in situ data integration to derive sawgrass density information for surface-flow modeling in the Everglades
- Geospatial_Data_Presentation_Form: report
- Publication_Information:
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- Publication_Place: Wallingford, Oxfordshire, UK
- Publisher: International Association of Hydrological Sciences
- Other_Citation_Details:
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in Remote Sensing and Hydrology 2000, editors Manfred Owe, Kaye Brubaker, Jerry Ritchie, and Albert Rango, publicaton 267, ISBN 1-901502-46-5
- Cross_Reference:
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- Citation_Information:
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- Originator: Desmond, G. B.
- Publication_Date: 2003
- Title:
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Measuring and mapping the topography of the Florida Everglades for Ecosystem Restoration
- Geospatial_Data_Presentation_Form: fact sheet
- Series_Information:
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- Series_Name: USGS Fact Sheet
- Issue_Identification: 021-03
- Publication_Information:
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- Publication_Place: Reston, VA
- Publisher: U.S. Geological Survey
- Online_Linkage: <http://sofia.usgs.gov/publications/fs/021-03/index.html>
- Data_Quality_Information:
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- Logical_Consistency_Report:
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The EDEN monitoring network includes ground-elevation measurements and continuous water-level data.
- Completeness_Report:
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Ground-surface elevation data were collected by the USGS at more than 50,000 points with an approximate spacing of 400 meters covering almost the entire Greater Everglades. The EDEN water-level network consists of hourly water-level data from 253 gaging stations (230 existing gaging stations and 23 new installations) and includes freshwater (nontidal) marsh gaging stations, boundary gages on canals, and coastal gaging stations operated by the Big Cypress National Preserve (BCNP), Everglades National Park (ENP), South Florida Water Management District (SFWMD), and USGS. The U.S. Army Corps of Engineers (USACE) and SFWMD recently documented or surveyed a majority of the hydrologic gages in the Greater Everglades to obtain correct values for converting water-level data from NGVD 29 to NAVD 88. The NAVD 88 datum is consistent in comparing water-level data across the Greater Everglades and computing accurate water depths.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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Horizontal positions are established by GPS observations and are referenced to the North American Datum of 1983 (NAD83). The desired horizontal accuracy is +/- 15 centimeters. This level of accuracy is consistent with GPS differential techniques which use two stations - a high-quality dual-frequency GPS receiver base station and a roving GPS station. The density and accuracy of a given GPS data observation varies from a few meters to a few centimeters according to the Position Dilution of Precision (PDOP) in the study area. Generally if the PDOP is observed to be excessive, data collection is discontinued or the data are discarded. The PDOP is an indicator of the positional accuracy of the GPS that be can derived from the current GPS satellite geometry, which varies continuously. Generally the smaller the PDOP number, the higher the data quality. The PDOP is a permanent part of the recorded data and is also included in the post processing procedures during reduction of the GPS observations to NAD 83. Where possible, the GPS base station has an ellipsoid height to an accuracy of two centimeters relative to the Continuously Operating Reference Stations (CORS) or the High Accuracy Reference Network (HARN), both operated by the National Geodetic Survey (NGS).
- Vertical_Positional_Accuracy:
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- Vertical_Positional_Accuracy_Report:
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Source data (HAED) collected to better than +/- 15cm. Standard errors of cross-validation for the DEM range from ~7cm to 17cm depending on the EDEN subarea. This version is composed of new models created for WCA3N and the BCNP combined with the mosaic of two versions (i.e., eden_v002a for WCA1 and eden_v002c for all other EDEN subregions) that comprised EDEN_EM_JAN07. The previous mosaic was selected based on analysis of model performance in the water depth estimation process. The WCA1 surface was produced by removing all "upland" AHF points as defined by a reclassification of the Florida GAP process. For WCA1, the krigging model was developed based on statistics from the entire EDEN domain (the process for eden_v002a production). For each other EDEN sub-area (i.e., the other WCAs and the National Park) region specific krigging models were developed and applied.
- Lineage:
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- Process_Step:
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- Process_Description:
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The EDEN domain was broken into a large number of equal-sized rectangles (cells) that in total are referred to as the "grid". Characteristics of this grid, such as location of the centroid, the representative area of the Everglades, elevation, and percentage of vegetation type, define the grid spatial parameters. To match the Airborne Height Finder (AHF) data sampling spacing, the spatial resolution or the dimension (in ground distance) of each grid cell is 400 meters on each side. The ground surface DEM development process is iterative as additional high accuracy elevation data (HAED) are collected, water surfacing algorithms improve, and additional ground-based ancillary data become available. The DEMs used in the EDEN analysis through the summer of 2006 rely on version HAEDbeta2 of HAED. However, this version was produced by using all available AHF points posted to SOFIA as of August 2007. To create a realistic region-wide elevation model for EDEN purposes, the elevation data were segregated by Water Conservation Areas and National Park boundaries so that local trends could be isolated, sub-region specific interpolation models could be developed, and realistic breaks in elevation along sub-region boundaries could be imbedded in a final, region-wide DEM, To date the best performing DEMs for all subareas have been produced using the geostatistical approach called "anisotropic ordinary kriging". The latest iteration of the EDEN DEM used in EDEN applications is referenced as eden_em_oct07.
- Process_Date: 2007
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: John Jones
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Project chief
- Contact_Address:
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- Address_Type: mailing address
- Address: 521 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Country: USA
- Contact_Voice_Telephone: 703 648-5543
- Contact_Facsimile_Telephone: 703 648-4165
- Contact_Electronic_Mail_Address: jwjones@usgs.gov
- Spatial_Data_Organization_Information:
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- Indirect_Spatial_Reference: Greater Everglades region
- Direct_Spatial_Reference_Method: Raster
- Raster_Object_Information:
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- Raster_Object_Type: Grid Cell
- Row_Count: 402
- Column_Count: 284
- Vertical_Count: 1
- Spatial_Reference_Information:
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- Horizontal_Coordinate_System_Definition:
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- Planar:
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- Grid_Coordinate_System:
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- Grid_Coordinate_System_Name: Universal Transverse Mercator
- Universal_Transverse_Mercator:
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- UTM_Zone_Number: 17
- Transverse_Mercator:
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- Scale_Factor_at_Central_Meridian: 0.9996
- Longitude_of_Central_Meridian: -81
- Latitude_of_Projection_Origin: 0
- False_Easting: 500000
- False_Northing: 0
- Planar_Coordinate_Information:
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- Planar_Coordinate_Encoding_Method: Row and Column
- Coordinate_Representation:
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- Abscissa_Resolution: 400
- Ordinate_Resolution: 400
- Planar_Distance_Units: meters
- Geodetic_Model:
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- Horizontal_Datum_Name: North American Datum of 1983
- Ellipsoid_Name: Geodetic Reference System 80
- Semi-major_Axis: 6378137
- Denominator_of_Flattening_Ratio: 298.257
- Vertical_Coordinate_System_Definition:
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- Altitude_System_Definition:
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- Altitude_Datum_Name: North American Vertical Datum of 1988
- Altitude_Resolution: .15
- Altitude_Distance_Units: meters
- Altitude_Encoding_Method:
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Explicit elevation coordinate included with horizontal coordinates
- Distribution_Information:
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- Distributor:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: Heather S.Henkel
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
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- Address_Type: mailing address
- Address: 600 Fourth St. South
- City: St. Petersburg
- State_or_Province: FL
- Postal_Code: 33701
- Country: USA
- Contact_Voice_Telephone: 727 803-8747 ext 3028
- Contact_Facsimile_Telephone: 727 803-2030
- Contact_Electronic_Mail_Address: hhenkel@usgs.gov
- Resource_Description: eden_em_oct07
- Distribution_Liability: No warrantees are implied or explicit for the data
- Standard_Order_Process:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: ARCG
- Format_Version_Number: ArcGIS 9.1
- Format_Specification: .zip
- Format_Information_Content: zipped file of ArcINFO .e00 grid interchange format
- File_Decompression_Technique: Win Zip 9.0 - SR1
- Transfer_Size: 0.467
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: <http://sofia.usgs.gov/eden/models/groundelevmod.php>
- Access_Instructions: The data may be downloaded from the SOFIA website.
- Fees: none
- Metadata_Reference_Information:
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- Metadata_Date: 20071107
- Metadata_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: John Jones
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Project chief
- Contact_Address:
-
- Address_Type: mailing address
- Address: 521 National Center
- City: Reston
- State_or_Province: VA
- Postal_Code: 20192
- Country: USA
- Contact_Voice_Telephone: 703 648-5543
- Contact_Facsimile_Telephone: 703 648-4165
- Contact_Electronic_Mail_Address: jwjones@usgs.gov
- Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
- Metadata_Standard_Version: FGDC-STD-001-1998
This page is <http://sofia.usgs.gov/metadata/sflwww/eden_em_oct07_400m.html>
U.S. Department of the Interior, U.S. Geological Survey
Comments and suggestions? Contact: Heather
Henkel - Webmaster
Generated by mp version 2.8.18 on Wed Nov 07 20:55:25 2007