Identification_Information: Citation: Citation_Information: Originator: United States Army Corps of Engineers Publication_Date: 20080217 Title: 2007 MrSID Image of St. John Utilized to derive Benthic Habitat Maps (18064_c7_ne.sid) Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: 401 Dividend Drive, Suite K, Peachtree City, GA 30269 Publisher: 3001, Inc. Online_Linkage: https://coastalscience.noaa.gov/projects/detail?key=205 Description: Abstract: This MrSID (.sid) file is an orthophoto mosaic from a collection of GeoTIFF format natural color and false color infrared orthophotos covering the islands of Puerto Rico, Culebra, Vieques, St. Thomas, St. John, and St. Croix (USVI). An orthophoto is remotely sensed image data in which displacement of features in the image caused by terrain relief and sensor orientation have been mathematically removed. Orthophotography combines the image characteristics of a photograph with the geometric qualities of a map. The source imagery was obtained from November 2006 through March 2007 and used to produce orthophotos with a one foot ground sample distance (GSD). Imagery was acquired at 0.9 foot GSD resolution. Flight height maintained during mission was 8,650 feet AGL. The imagery was captured at 12-bit radiometric resolution and converted to 8-bit radiometric resolution during post processing. The imagery was captured with 30% sidelap between all adjacent flight lines. The PRVI project area was divided into 20 flight blocks due to neccessary base station and flight line length requirements. The imagery was obtained and processed by all digital means beginning with data acquisition using an ADS40 digital sensor. The orthophotos are also available in GeoTIFF form from the distributor. Purpose: The purpose of the project is to provide the United States Army Corps of Engineers with current year digital orthophotos covering all of Puerto Rico and the US Virgin Islands. The Corps regularly uses digital orthophotos to support regulatory, land management and acquistion, planning, engineering and habitat restoration projects. The data may also become available to local, state and other federal agencies for their specific management and analysis needs. The one-foot resolution data collected for this project is higher resolution than the previous island-wide collection in 2004, which was one-meter resolution. Supplemental_Information: The data design specifications for this product includes several directed to ensure its quality, consistency, and useability. These specifications address some of the technical issues associated with orthoimage production: 1) the tops of buildings and other structures elevated above the surface of the ground 'tilt' away from the center point of the source photography and from their own bases as a result of perspective and their height which is not compensated for in digital elevation models of the ground surface and 2) individual orthoimages may be assembled from several source images (strips). Resource Description: The data are being provided on an 'as is' basis. The Corps specifically disclaims any warranty, expressed or implied, including, but not limited to, the implied warranties or merchantability and fitness for a particular use. The entire risk as to quality and performance is with the user. In no event will the Corps or its staff be liable for any direct, indirect, incidental, special, consequential, or other damages, including loss of profit, arising out of the use of these data even if the Corps has been advised of the possibility of such damages. All data are intended for resource management use. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 200709 Ending_Date: 200710 Currentness_Reference: Date of image acquisition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -64.813241 East_Bounding_Coordinate: -64.748944 North_Bounding_Coordinate: 18.374825 South_Bounding_Coordinate: 18.310890 Keywords: Theme: Theme_Keyword_Thesaurus: NCEI Geoportal Filter Theme_Keyword: CoRIS_Metadata Theme: Theme_Keyword_Thesaurus: CoRIS Discovery Thesaurus Theme_Keyword: Map Images > Aerial Photographs Theme: Theme_Keyword_Thesaurus: CoRIS Theme Thesaurus Theme_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef monitoring and assessment > Mapping > Habitat mapping Theme_Keyword: EARTH SCIENCE > Biosphere > Zoology > Corals > Reef Monitoring and Assessment > Remote Sensing > Aircraft > Aerial Photography Theme: Theme_Keyword_Thesaurus: none Theme_Keyword: orthophotograph Theme_Keyword: orthoimage Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: imageryBaseMapsEarthCover Theme_Keyword: 010 Place: Place_Keyword_Thesaurus: none Place_Keyword: U.S. Virgin Islands Place_Keyword: St. John Place: Place_Keyword_Thesaurus: CoRIS Place Thesaurus Place_Keyword: COUNTRY/TERRITORY > United States of America > U. S. Virgin Islands > St. John > St. John (18N064W0011) Place_Keyword: OCEAN BASIN > Atlantic Ocean > Caribbean Sea > Virgin Islands > Virgin Islands > St. John (18N064W0011) Place: Place_Keyword_Thesaurus: CoRIS Region Place_Keyword: USVI Access_Constraints: None Use_Constraints: None. Acknowledgment of the United States Army Corps of Engineers would be appreciated for products derived from these data. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Army Corps of Engineers Contact_Address: Address_Type: mailing address Address: 1222 Spruce Street City: St. Louis State_or_Province: MO Postal_Code: 63103-2833 Country: US Contact_Voice_Telephone: 314-331-8385 Contact_Facsimile_Telephone: 314-331-8071 Contact_Electronic_Mail_Address: Robert.D.Mesko@mvs02.usace.army.mil Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770 Data_Quality_Information: Logical_Consistency_Report: Sample points taken from overlapping areas of adjacent image strips that contributed image chips to each orthophoto tile are typically consistent to the 2-3 pixel level. This not only ensures that a consistent mosaic can be created from the adjacent image strips acquired with the ADS40 pushbroom scanner but also means that the images have good precision and as a group are spatially self-consistent. Completeness_Report: These data cover all of the islands of Puerto Rico, Culebra, Vieques, and the US Virgin Islands. Each orthophoto has an overedge of approximately 30 meters on all sides of its centering 1.875 minute cell. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: The accuracy value was determined by measuring photo-identifiable control points collected with GPS survey methods in the orthophotos. Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 5.00 Horizontal_Positional_Accuracy_Explanation: ASPRS Class I Standard for 200 Scale Mapping for areas defined in the document PR_USVI_DEM_Footprint07_Rev.pdf Quantitative_Horizontal_Positional_Accuracy_Assessment: Horizontal_Positional_Accuracy_Value: 10.0 Horizontal_Positional_Accuracy_Explanation: ASPRS Class I Standard for 400 Scale Mapping for areas defined in the document PR_USVI_DEM_Footprint07_Rev.pdf Lineage: Source_Information: Source_Citation: Citation_Information: Originator: 3001, Inc. Publication_Date: 20080217 Title: Digital Aerial Imagery for 2006-2007 PRVI Orthophotography Publication_Information: Publication_Place: 401 Dividend Drive, Suite K, Peachtree City, GA 30269 Publisher: 3001, Inc. Other_Citation_Details: Additional Information: (770) 631-0903 Source_Scale_Denominator: 2400 Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20071022 Source_Currentness_Reference: Date of image acquisition Source_Citation_Abbreviation: dig_aer_img Source_Contribution: Flight planning, image acquisition, image processing and image packaging. Source_Information: Source_Citation: Citation_Information: Originator: RLDA Publication_Date: 20070115 Title: Ground Control for 2006-2007 PRVI Orthophotography Publication_Information: Publication_Place: PO Box 41033, San Juan, Puerto Rico, 00940 Publisher: RLDA Other_Citation_Details: Additional Information: (787)268-6097 Source_Scale_Denominator: 2400 Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20061101 Source_Currentness_Reference: Date ground control was collected Source_Citation_Abbreviation: photo_control Source_Contribution: Horizontal and vertical control used to establish positions and elevations for reference and correlation purposes and as input to the aerotriangulation process. Source_Information: Source_Citation: Citation_Information: Originator: 3001, Inc Publication_Date: 20050201 Title: DEM for Orthorectification of 2006-2007 PRVI Orthophotography Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: 401 Dividend Drive, Suite K, Peachtree City, GA 30269 Publisher: 3001, Inc. Other_Citation_Details: Additional Information: (770) 631-0903 Source_Scale_Denominator: 2400 Type_of_Source_Media: disc Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20050201 Source_Currentness_Reference: Date DEM was processed by 3001, Inc. Source_Citation_Abbreviation: ortho_dem Source_Contribution: Ground elevations used for orthorectification process Process_Step: Process_Description: Ground control consisted of photo identifiable surveyed points. The imagery was collected at an altitude of 8650 ft using an ADS40 digital sensor. Image quality was verified during the post flight review phase. Factors considered during this review included but were not limited to the presence of smoke and/or cloud cover, contrails, light conditions and sun glint. The triangulated strips were rectified with a recent DEM of the area provided by 3001, Inc. The vertical accuracy of the DEM varies based on the elevation postings and is generally estimated at 30-45cm. The red, green and blue bands were combined to generate a final natural color orthophoto, and the near - infrared, red and green bands were combined to generate a final false color infrared orthophoto. The ADS40 sensor collects twelve bit image data which requires radiometric adjustment for output in standard eight bit image channels. Converting to eight bit results in a reduction of the color range from 4096 to 256 - thus loss of radiometric detail is inevitable. The extra dynamic range of the sensor permits greater object differentiation in shadows and in bright areas. The sixteen bit dynamic range permitted the imagery to be more effectively color balanced than is possible with eight bit imagery. This was accomplished by performing tonal enhancements immediately prior to the reduction from sixteen bit to eight bit data. In addition to color banancing these eight bit images were adjusted to create seamless imagery to the highest extent practically achievable. The imagery was mosaicked using a combination of automated and manual seamlines generation. Project pecified tiles were extracted from the mosaic. Final image tiles were reviewed for artifacts and anomalies and adjusted as part of quality control procedures. When necessary, local corrections to the imagery were performed to minimize such effects. Process_Date: 20080217 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter Briere Contact_Organization: 3001, Inc Contact_Address: Address_Type: mailing and physical address Address: 401 Dividend Drive, Suite K City: Peachtree City State_or_Province: GA Postal_Code: 30269 Contact_Voice_Telephone: (770) 631-0903 Contact_Facsimile_Telephone: (770) 631-0820 Contact_Electronic_Mail_Address: pbriere@3001inc.com Hours_of_Service: 8:00 a.m. to 5:00 p.m. Cloud_Cover: 5 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 23019 Column_Count: 22090 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 18.433333 Standard_Parallel: 18.033333 Longitude_of_Central_Meridian: -66.433333 Latitude_of_Projection_Origin: 17.833333 False_Easting: 200000.000000 False_Northing: 200000.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: Row and Column Coordinate_Representation: Abscissa_Resolution: 0.304800 Ordinate_Resolution: 0.304800 Planar_Distance_Units: meters 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 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Army Corps of Engineers Contact_Address: Address_Type: Mailing Address Address: 1222 Spruce Street City: St. Louis State_or_Province: MO Postal_Code: 63103-2833 Country: US Contact_Voice_Telephone: 314-331-8385 Contact_Facsimile_Telephone: 314-331-8071 Contact_Electronic_Mail_Address: Robert.D.Mesko@mvs02.usace.army.mil Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Central Time) Resource_Description: Downloadable Data Distribution_Liability: Translation of files to formats other than those described here is the sole responsibility of individuals downloading the data. Metadata_Reference_Information: Metadata_Date: 20200329 Metadata_Review_Date: 20100315 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Army Corps of Engineers Contact_Address: Address_Type: Mailing Address Address: 1222 Spruce Street City: St. Louis State_or_Province: MO Postal_Code: 63103-2833 Country: US Contact_Voice_Telephone: 314-331-8385 Contact_Facsimile_Telephone: 314-331-8071 Contact_Electronic_Mail_Address: Robert.D.Mesko@mvs02.usace.army.mil Hours_of_Service: Monday through Friday 8:00 AM to 5:00 PM (Central Time) Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: Local Time CoRIS: CoRIS_ID: 20100315125733 CoRIS_Children: None CoRIS_Beginning_Date: 20070901 CoRIS_Ending_Date: 20071031 CoRIS_Metadata_Link: https://www.coris.noaa.gov/metadata/records/html/metadata_18064_c7_ne.html CoRIS_Tracking_ID: 4504