Identification_Information: Citation: Citation_Information: Originator: Texas Natural Resources Information System (TNRIS) Publication_Date: February 2002 Title: 167_1_87.tif Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: 1987 Galveston County, Texas Issue_Identification: Galveston_FrameNumber_1987 Publication_Information: Publication_Place: Austin, Texas Publisher: Texas Natural Resources Information System Other_Citation_Details: Scanned and geo-referenced digital image created from hard copy source historical aerial photography. The file naming scheme is FIPS county code_frame number_coverage year. Online_Linkage: \\Samwise\Pvault\TxDAPA\GLO\Galveston\Scanned Photos\'87(12-Bit)\167_1_87.tif Larger_Work_Citation: Citation_Information: Originator: Digital files created by Texas Natural Resources Information System Originator: source photos created by TxDOT 1/8/87 Originator: mission # 356560 Originator: 9x9 B&W image Publication_Date: February 2002 Title: Texas Digital Aerial Photo Archive-Gulf Coast Geospatial_Data_Presentation_Form: digital raster data Series_Information: Series_Name: Digital Aerial Photo Archive - Texas Gulf Coast Issue_Identification: 1987 Galveston County Texas Publication_Information: Publication_Place: Austin, Texas Publisher: Texas Natural Resources Information System Other_Citation_Details: Digital image created from scanned and georeferenced historic photographic prints Description: Abstract: The Texas Digital Aerial Photo Archive project (TxDAPA) entails scanning and georeferencing hard copy historic aerial photographic prints contained in TNRIS' archive of over 800,000 photographs, and includes creating digital raster images for purposes of preserving these valuable photographs while improving access to state historical files. Originating as early as the 1930's, these images support public and private sector inquiries analyzing regional land use and environmental changes over time. This document describes one image in a series of digitized frames that describe ground conditions in Galveston County, Texas as it appeared in 1987. TxDAPA performance guidelines stipulate first order polynomial georeferencing of select, high-resolution scanned image frames using ESRI Corporation's ArcMap software. To create these digital files, the historic hard copy photos are organized, scanned, and the scanned images are overlaid atop a corresponding Digital Orthophoto Quarter Quadrangle (DOQQ) (3.75-minutes of latitude by 3.75-minutes of longitude), cast on the Universal Transverse Mercator Projection (UTM) on the North American Datum of 1983 (NAD83). The geographic extent of each scanned historic image often spans across quarter-quad grids, and the TxDAPA images are not clipped to quarter quad grids. Geodetic monuments were not used to align the scanned image to the DOQQ. However, the historic images have been rectified to line up with visually identifiable ground features that appear on both the DOQQ and the historic image (such as road intersections or buildings). Metadata for the DOQ used as a basemap to position this image spatially is available online at http://www.tnris.state.tx.us/digital.htm. Despite quality control measures implemented for ensuring precision, geo-positional inaccuracies may exist. All digital historic images and products produced by the Texas Digital Aerial Photo Archive project reside in the public domain. Purpose: The image described herein is a digital replication of one hard copy historic aerial photograph held on file for public record by the Texas Natural Resources Information System (TNRIS). These digital files further TNRIS' mission to expand awareness of and improving access to historic data maintained by the State of Texas. These digital images can be used for land-use planning, land change studies, and other applications. This image is part of the Texas Gulf Coast Project, which in turn is part of the Texas Digital Aerial Photo Archive project. Supplemental_Information: Through partnerships, TxDAPA seeks funding to create digital historic images for the entire state of Texas, beginning with the Texas Gulf Coast. These high-resolution greyscale historic images are formatted for use with ESRI Corporation's ArcGIS ArcMap software. However, any image processing software supporting 12-bit images can be used to view the files. Other coverage years are being created to provide a historic record of land use changes over time. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1987 Time_of_Day: unknown Currentness_Reference: 1987 Galveston County, Texas ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -95.263082 East_Bounding_Coordinate: -95.201329 North_Bounding_Coordinate: 29.573352 South_Bounding_Coordinate: 29.516870 Keywords: Theme: Theme_Keyword_Thesaurus: Historic Aerial Photography Theme_Keyword: Aerial Photography Theme_Keyword: Historic aerial photography Theme_Keyword: Texas Digital Aerial Photo Archive Theme_Keyword: Texas Natural Resources Information System Theme_Keyword: TNRIS Theme_Keyword: Texas Gulf Coast Theme_Keyword: Historic images Place: Place_Keyword: Galveston County Place_Keyword: Texas Gulf Coast Place_Keyword: Galveston Place_Keyword: Texas Place_Keyword: Gulf of Mexico Temporal: Temporal_Keyword: 1987 Access_Constraints: This image is in the public domain and there are no restrictions on its access. Use_Constraints: This image is in the public domain and there are no restrictions on its use. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Thomas W. Brown, Jr. Contact_Organization: Texas Natural Resources Information System (TNRIS) Contact_Position: Manager-Research and Distribution Center Contact_Address: Address_Type: physical address Address: 1700 N. Congress B-40 City: Austin State_or_Province: Texas Postal_Code: 87701 Country: USA Contact_Voice_Telephone: 512-475-2580 Contact_TDD/TTY_Telephone: N/A Contact_Facsimile_Telephone: 512-436-7274 Contact_Electronic_Mail_Address: tbrown@tnris.state.tx.us Hours_of_Service: M-F 7:30-5:30pm Browse_Graphic: Browse_Graphic_File_Description: 1987 Galveston County Texas Browse_Graphic_File_Type: TIFF Data_Set_Credit: Texas Natural Resources Information System Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 2; ESRI ArcCatalog 8.2.0.700 Cross_Reference: Citation_Information: Originator: Texas Natural Resources Information System (TNRIS) Publication_Date: February 2002 Title: Texas Digital Aerial Photo Archive Geospatial_Data_Presentation_Form: 12-bit Black & White digital image Series_Information: Series_Name: Texas Digital Aerial Photo Archive Issue_Identification: 1987 Galveston County Texas Publication_Information: Publication_Place: Austin, Texas Publisher: TNRIS Other_Citation_Details: Scanned and georeferenced historic hard copy aerial photo Larger_Work_Citation: Citation_Information: Originator: Texas Natural Resources Information System Publication_Date: February 2002 Publication_Time: Unknown Title: Texas Digital Aerial Photography Archive-Gulf Coast Edition: 1987 Galveston County Texas Geospatial_Data_Presentation_Form: 12-bit Black & White digital image Series_Information: Series_Name: Texas Gulf Coast Issue_Identification: 1987 Galveston County Texas Publication_Information: Publication_Place: Austin, Texas Publisher: Texas Natural Resources Information System Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: No attribute tables have been associated with this image. Logical_Consistency_Report: Discernible features common to both the DOQQ and its corresponding scanned historic photograph have been visually analyzed and digitally aligned to provide geo-positional reference to the historic image file. The scanned image contains no artifically induced artifacts. Completeness_Report: Fiduciary marks have been edge-cropped to accommodate reducing lens distortion along the radial extremities of the image frame. The 1987 Galveston County, Texas data set covers Bolivar and Galveston islands only. Hard copy photographs unavailable during the scanning process may be missing from this digital data set. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: While every effort has been made to ensure the precision of the georeferenced images, some error may occur. Positional inaccuracies attributable to scanning and georeferencing procedures, in combination with disparities imported via source DOQ MrSID-compressed basemap files compound project percentage error values. A Root Mean Square (RMS) measurement below 15 has been deemed acceptable to achieving USGS Mapping Standards relative to this project. TxDAPA scanned historic images have no associated vertical data and should neither be confused with nor treated as DOQs; they are flat images that have been rubbersheeted to the current DOQ image. However, users can perform additional image processing and create DOQ-type products should they wish to do so. Lineage: Source_Information: Type_of_Source_Media: Hard copy historic aerial photographic print Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: March 1987 Source_Currentness_Reference: ground condition Process_Step: Process_Description: Drawing from TNRIS' archives of historic aerial photographs, a selected photographic print is scanned at 12 bit, 500 dpi, and saved as a greyscale tiff image. Using ESRI Corporation's ArcGIS 8.1 software, the tiff image is georeferenced to a corresponding MrSID-compressed, color infrared 1994-1998 digital orthophoto quadrangle basemap. The image is "rubbersheeted" to the corresponding DOQ and saved, thereby creating a tiff world file. Process_Date: January 2002 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Thomas Brown Contact_Organization: Texas Natural Resources Information System Contact_Position: Manager-Research and Distribution Center Contact_Voice_Telephone: 512-475-2580 Contact_TDD/TTY_Telephone: N/A Contact_Facsimile_Telephone: 512-463-8337 Contact_Electronic_Mail_Address: tbrown@tnris.state.tx.us Hours_of_Service: 7:30 am - 5:30 pm m-f Cloud_Cover: None Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 4220 Column_Count: 3992 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 15 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -93.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: row and column Coordinate_Representation: Abscissa_Resolution: 1.470239 Ordinate_Resolution: 1.457397 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 Entity_and_Attribute_Information: Overview_Description: Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Texas Natural Resources Information System Contact_Address: Address_Type: physical address Address: 1700 N Congress Ave City: Austin State_or_Province: TX Postal_Code: 87701 Country: USA Contact_Voice_Telephone: 512-475-2580 Contact_TDD/TTY_Telephone: N/A Contact_Facsimile_Telephone: 512-463-7274 Contact_Electronic_Mail_Address: tbrown@tnris.state.tx.us Hours_of_Service: 7:30 am -5:30 pm Resource_Description: Texas Digital Aerial Photo Archive Gulf Coast, Galveston County__framenumber_1987 Distribution_Liability: None Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: TIFF File_Decompression_Technique: No compression applied Transfer_Size: 0.000 Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Compatibility_Information: Compatible with ESRI ArcMap software Fees: $28 per CD-rom Ordering_Instructions: Email Thomas Brown at the Texas Natural Resources Information System. tbrown@tnris.state.tx.us or call 512-463-8337 Turnaround: 3 days Custom_Order_Process: Digital historic aerial photo images are available on CD from TNRIS. Call 512-463-8337 or email tbrown@tnris.state.tx.us Technical_Prerequisites: These images are formatted with ESRI's ArcGIS and ArcMap software, and are best viewed with same. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Metadata_Reference_Information: Metadata_Date: 20020621 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Thomas Brown Contact_Organization: Texas Natural Resources Information System (TNRIS) Contact_Position: Manager-Research and Distribution Center Contact_Address: Address_Type: physical address Address: 1700 N Congress Ave B-40 City: Austin State_or_Province: Texas Postal_Code: 87701 Contact_Voice_Telephone: 512-463-8337 Contact_TDD/TTY_Telephone: N/A Contact_Facsimile_Telephone: 512-463-7274 Contact_Electronic_Mail_Address: tbrown@tnris.state.tx.us Hours_of_Service: 7:30 am to 5:30 pm Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time Metadata_Access_Constraints: none Metadata_Use_Constraints: none Metadata_Security_Information: Metadata_Security_Classification: Unclassified Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile