gov.noaa.nmfs.inport:48251 eng UTF8 dataset Office for Coastal Management resourceProvider NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact 2024-02-29T00:00:00 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) 3 row 9518 column 13537 vertical 1 point 0 C-CAP United States Virgin Islands, St. Thomas 2003-2007-Era Land Cover Change Analysis 2003_2007_USVI_stthomas_lc_change 2010-05-24 publication NOAA/NMFS/EDM 48251 https://www.fisheries.noaa.gov/inport/item/48251 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information https://coast.noaa.gov/digitalcoast WWW:LINK-1.0-http--link Citation URL Online Resource download https://coast.noaa.gov/htdata/raster1/landcover/bulkdownload/hires WWW:LINK-1.0-http--link Citation URL Online Resource download mapDigital This data set contains the 2003-era and 2007-era classifications of St. Thomas, United States Virgin Islands and can be used to analyze change. This data set utilized 32 full or partial ADS40 scenes which were analyzed according to the Coastal Change Analysis Program (C-CAP) protocol to determine land cover. To improve the understanding of coastal uplands and wetlands, and their linkages with the distribution, abundance, and health of living marine resources. completed NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information pointOfContact NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information custodian 5 years EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER EARTH SCIENCE > LAND SURFACE > LAND USE/LAND COVER > LAND USE/LAND COVER CLASSIFICATION theme Global Change Master Directory (GCMD) Science Keywords 17.0 OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA > VIRGIN ISLANDS place Global Change Master Directory (GCMD) Location Keywords 20.8 CAMERAS instrument Global Change Master Directory (GCMD) Instrument Keywords 17.2 Airplane > Airplane WORLDVIEW-2 > DigitalGlobe WORLDVIEW-2 WORLDVIEW-3 > DigitalGlobe WORLDVIEW-3 platform Global Change Master Directory (GCMD) Platform Keywords 17.2 Change Detection Analysis Land Cover Analysis Remotely Sensed Imagery/Photos theme Coastal Zone St. Thomas US Territory place DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian C-CAP project InPort otherRestrictions Cite As: Office for Coastal Management, [Date of Access]: C-CAP United States Virgin Islands, St. Thomas 2003-2007-Era Land Cover Change Analysis [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48251. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: None otherRestrictions Use Constraints: Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. otherRestrictions Distribution Liability: Users must assume responsibility to determine the usability of these data. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 48251 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48251.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference grid eng; US imageryBaseMapsEarthCover Microsoft Windows XP Version 2002 Service Pack 3; ESRI ArcCatalog 9.3 Service Pack 1 -65.09978 -64.790115 18.273179 18.476359 | Currentness: Date of the ADS40 and Quickbird scenes 2003-11-07 2007-03-11 false eng false US West Coast Coastal Zone 2017-11-16 publication NOAA Office for Coastal Management (843) 740-1202 2234 South Hobson Ave Charleston SC 29405-2413 coastal.info@noaa.gov https://coast.noaa.gov WWW:LINK-1.0-http--link NOAA Office for Coastal Management Website NOAA Office for Coastal Management Home Page information distributor https://coast.noaa.gov/dataviewer/#/imagery/search/where:ID=4720 WWW:LINK-1.0-http--link Customized Download Create custom data files by choosing area, map projection, file format, etc. download dataset Accuracy Attribute_Accuracy_Report Horizontal Positional Accuracy 12 meters CE90 Vertical Positional Accuracy There was no terrain correction in the geo-referencing procedure. Completeness Report Data does not exist for all classes. Many classes of from-to change never occurred in St. Thomas. Conceptual Consistency Tests for logical consistency indicate that all row and column positions in the selected latitude/longitude window contain data. Conversion and integration with vector files indicates that all positions are consistent with earth coordinates covering the same area. Attribute files are logically consistent. Process_Description This dataset was created by Sanborn. This dataset contains the classifications of 2003-era imagery and 2007- era imagery. It is used for change analysis between these years. The attributes include a from-to change description category. There are 481 classes corresponding to the 481 possible from-to change combinations. In this section of the metadata, the 2003-era classification procedure is described, then the 2007-era change detection classification procedure is described. Finally in the post-processing section, the process of combining the maps to generate a spatial matrix of change is discussed. Early Date (2003-era) Classification: This section outlines the classification procedure for the U.S. Virgin Islands C-CAP product. The Quickbird image tiles utilized for this project were provided by Digital Globe as orthorectifed, georeferenced products and were consistent with the quoted 1:12000 spatial accuracy. In conjunction with the Quickbird, Sanborn used LiDAR collected in 2007 for the island. Training data was collected in the field between May 31th and June 5th, 2009. Land cover observations were recorded by analysts. The referenced dataset went through a QA/QC procedure to ensure it met accuracy standards. Image segmentation was completed at multiple scales using the multispectral (2.4 m) imagery in order to group like spectral and textural objects within the imagery. For consistency, the associated impervious data set was incorporated into the segmentation layer as a boundary delimiter. Segments can share boundaries of an impervious surface, but can never overlap an impervious surface. Image segments are classified using a decision tree classifier in See5 software and an iterative nearest neighbor classifier in Definiens software. Nearest neighbor training data is collected through field observations, and analyst photo interpretation/selection. Models are built to refine or reclassify land cover areas by utilizing the wealth of attribute information linked to each segment within Definiens. As with any automated or semi-automated land cover classification there are often inconsistencies in the land cover map. The final step before map finalization was to remove inaccuracies through manual segment labeling as interpreted by an analyst. Sanborn used independent reviewer's comments to further refine the land cover map. Attributes for this product are as follows: 0 Background 1 Unclassified 2 Impervious 3 4 5 Developed, Open Space 6 Cultivated Crops 7 Pasture/Hay 8 Grassland/Herbaceous 9 Deciduous Forest 10 Evergreen Forest 11 Mixed Forest 12 Scrub/Shrub 13 Palustrine Forested Wetland 14 Palustrine Scrub/Shrub Wetland 15 Palustrine Emergent Wetland 16 Estuarine Forested Wetland 17 Estuarine Scrub/Shrub Wetland 18 Estuarine Emergent Wetland 19 Unconsolidated Shore 20 Bare Land 21 Open Water 22 Palustrine Aquatic Bed 23 Estuarine Aquatic Bed 24 Tundra 25 Snow/Ice 2010-05-24T00:00:00 Ancillary Datasets: Non-Quickbird image datasets used are LiDAR (2 foot point spacing density), DCM (Digital Canopy Model derived from LiDAR), slope, aspect, NWI, NLCD, field-collected points, photo-interpreted points. QA/QC Process: There were several QA/QC steps involved in the creation of this product. There was an internal QA/QC. This was done by viewing the classification frame-by-frame along with the Quickbird imagery, the classification, and high resolution reference imagery. NOAA staff completed a similar review and provided both general and point comments. Late Date (2007-era) Classification: Pre-processing steps: The ADS40 was provided to Sanborn as a geo-referenced product. Sanborn perfomed a quality control on the imagery to check for pixel dropouts and other image issues. Individual image tiles were combined to create a single image for the entire island. The early date (2003-era) classification was created first using satellite data because at the time it was the most recent, cloud free imagery available. The late date (2007-era) ADS40 became available shortly after the early date classification was completed. The ADS40 imagery was found to have ortho-rectification accuracy. The 2003-era classifications and imagery were geo-rectified to co-register with the ADS40 imagery. Change Detection: Once the images were aligned, the next step was to determine the areas of change between the 2003-era and 2007-era data. Since the 2003-era classification was already complete, it is only necessary to classify the areas of change to create a 2007-era classification of the same specifications. The 2007 ADS40 imagery was segmented with the 2003 land cover classification as a hard boundary delimter. Logical rulesets and thresholding based on the spectral properties of the imagery and the early date classification were used to generate a mask of potential change. The change mask was incorporated into the early date classification to create the draft late date classification. This map was further revised with rulesets and thresholding. The final step before map finalization was to remove inaccuracies through manual segment labeling as interpreted by an analyst. Sanborn used independent reviewer's comments to further refine the land cover map. Post-Processing Steps: A GIS matrix algorithm was run with 2003 and 2007 datasets as inputs. The algorithm generates a from-to file where each combination is uniquely labeled from 1 to 481. 2010-05-24T00:00:00 Metadata imported 2010-05-24T00:00:00 Source Contribution: NOAA OCM | Source Geospatial Form: remote-sensing image | Type of Source Media: CD-ROM C-CAP United States Virgin Islands, St. Thomas 2003-2007-Era Land Cover Change Analysis 2010-05-24 publication Sanborn. www.sanborn.com https://coast.noaa.gov/digitalcoast WWW:LINK-1.0-http--link Source Citation URL Source Citation URL information 2003-11-07 2007-03-11