Identification_Information: Citation: Citation_Information: Online_Linkage: www.usgs.gov Originator: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Publication_Date: 2010 Title: GUIS_FL_Geomorph.shp: Geomorphology and Depositional Subenvironments of Gulf Islands National Seashore, Perdido Key and Santa Rosa Island, Florida Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2010-1330 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Description: Abstract: This layer is a representation of the geomorphology and depositional subenvironments found within the boundary of the Gulf Islands National Seashore, Florida. Geomorphic and depositional subenvironments, collectively referred to as map units, were delineated with supervised functions within a Geographic Information System (GIS). The delineated boundaries of the map units were exported to create one shapefile. Map units are differentiated by the field "Type" in the attribute table of the shapefile. Map units were delineated and classified based on differences in tonal patterns of features in contrast to adjacent features observed on orthophotography. Land elevations from recent lidar surveys served as supplementary data to assist in delineating the map unit boundaries. This shapefile constitutes a comprehensive geologic representation of the Florida portion of the Gulf Islands National Seashore. Purpose: The purpose of this layer is to geologically classify the geomorphology and depositional subenvironments of Gulf Islands National Seashore, Florida, and to provide a viable land management tool for National Park Service personnel. Supplemental_Information: The barrier-island classification was referenced and mapped using 2006-2007 1-foot resolution true-color orthophotography downloaded from the U.S. Geological Survey National Map Seamless Server. Supplementary land elevation data were composed of 2006-2008 lidar-derived digital elevation models and hillshades from the Northwest Florida Water Management District, and 2004 and 2005 bare-earth surface lidar-derived digital elevation models and hillshades from the Experimental Advanced Airborne Research Lidar (EAARL) collected by the U.S. Geological Survey and the National Aeronautics and Space Administration (NASA). Low-altitude videography collected by the U.S. Geological Survey in 2004, 2005, and 2008 served as additional supplementary data. The geomorphic classes, or map units, are depicted with a single ESRI shapefile that is viewable in ESRI ArcGIS software, version 9.3.1. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: As needed Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -87.420460 East_Bounding_Coordinate: -86.510413 North_Bounding_Coordinate: 30.406206 South_Bounding_Coordinate: 30.297349 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme_Keyword: environment Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: geology Theme_Keyword: geomorphology Theme_Keyword: depositional subenvironment Place: Place_Keyword: Gulf Islands National Seashore Place_Keyword: Florida Place_Keyword: Perdido Key Place_Keyword: Santa Rosa Island Place_Keyword: U.S.A. Place_Keyword_Thesaurus: General Temporal: Temporal_Keyword_Thesaurus: General Temporal_Keyword: 2010 Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 Access_Constraints: None Use_Constraints: Feature locational accuracy not guaranteed at scales larger than 1:10,000. The U.S. Geological Survey should be acknowledged as the originator in any further work derived from this dataset. Data_Set_Credit: Robert A. Morton and Marilyn C. Montgomery Point_of_Contact: Contact_Information: Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S.A. Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Robert A. Morton Contact_Voice_Telephone: (727) 803-8747 Contact_Electronic_Mail_Address: rmorton@usgs.gov Hours_of_Service: 8:30 AM - 5:00 PM, Monday - Friday Data_Quality_Information: Logical_Consistency_Report: All polygon features of the shapefile in this dataset were checked topologically for overlaps and gaps. Overlaps and gaps were identified and corrected with a geodatabase topology in ArcGIS 9.3.1 with a cluster tolerance of 0.0032808333 feet. Completeness_Report: Classifications are constrained by the Gulf Islands National Seashore boundary. Classification definitions were developed by Robert A. Morton and Marilyn C. Montgomery. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: All true-color orthophotography used for delineation of subenvironments is 1-foot horizontal resolution. Lidar-derived hillshades and digital elevation models from 2004 and 2005 EAARL missions are 1-meter horizontal resolution; lidar-derived hillshades and digital elevation models from Northwest Florida Water Management District are 2-meter horizontal resolution. Features that could not be resolved in the office were verified in the field with GPS and photography. The positional accuracy of all features and layers in this dataset cannot be guaranteed at scales larger than 1:10,000. Lineage: Process_Step: Process_Description: Initial classification of subenvironments found within Gulf Islands National Seashore, Florida, was done using true-color orthophotography, EAARL data from 2004 and 2005, lidar data from the Northwest Florida Water Management District collected 2006-2008, and low-altitude videography collected by the U.S. Geological Survey in 2004, 2005, and 2008. Process_Date: 2010 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Person: Robert A. Morton Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S.A. Contact_Voice_Telephone: (727) 803-8747 Contact_Facsimile_Telephone: (727) 803-2030 Contact_Electronic_Mail_Address: rmorton@usgs.gov Hours_of_Service: 8:30 AM - 5:00 PM, Monday - Friday Process_Step: Process_Date: 20101130 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center Contact_Person: Marilyn C. Montgomery Contact_Voice_Telephone: (727) 803-8747 Contact_Electronic_Mail_Address: mmontgomery@usgs.gov Hours_of_Service: 8:30 AM - 5:00 PM, Monday - Friday Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S.A. Process_Description: Some subenvironments with complex edges were delineated with image segmentation algorithms in Definiens Developer software version 7. Other features best delineated with topographical variations were defined based on contours or hillshades generated in ESRI ArcGIS version 9.3.1. All features were classified and digitized in ESRI ArcGIS version 9.3.1 in the geodatabase file format, then exported to shapefile. Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 927 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: 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: 298.257222101 Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 16N Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -87.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.0000001 Ordinate_Resolution: 0.0000001 Planar_Distance_Units: meters Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: GUIS_FL_Geomorph Entity_Type_Definition: The primary mapping procedures were supervised functions within a Geographic Information System (GIS) that were applied to delineate and classify depositional subenvironments and features, collectively referred to as map units. The delineated boundaries of the map units were exported to create one shapefile. Map units are differentiated by the field "Type" in the attribute table of the shapefile. Map units were delineated and classified based on differences in tonal patterns of features in contrast to adjacent features observed on orthophotography. Land elevations from recent lidar surveys served as supplementary data to assist in delineating the map unit boundaries. Entity_Type_Definition_Source: Robert A. Morton and Marilyn C. Montgomery Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 926 Attribute: Attribute_Label: SHAPE Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: polygon Attribute: Attribute_Label: Type Attribute_Definition: The name of the geomorphologic and depositional subenvironments, or map units, of Gulf Islands National Seashore, Florida. Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Active Dune Complex Enumerated_Domain_Value_Definition: Barren to sparsely vegetated mounds or ridges of wind-blown sand that form hummocky topography landward of the beach. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Stable Dune Complex Enumerated_Domain_Value_Definition: Mounds or ridges of wind-blown sand that are typically densely vegetated with salt-tolerant grasses. The vegetated dunes form hummocky topography landward of the beach. The sand in these dunes is protected by the vegetation and is not moving. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Inactive Overwash Zone Enumerated_Domain_Value_Definition: An area that was historically overwashed and flooded by storm surge, such as during Hurricane Ivan in 2004. This area is not frequently flooded by high water or ocean waves but is still vulnerable to flooding from extreme storms. The former overwash sand is commonly reworked into low, hummocky dunes that can be vegetated with salt-tolerant grasses. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Beach Enumerated_Domain_Value_Definition: A mostly unvegetated strip of sand parallel to the shore that extends from the water to the seaward edge of the dunes or crest of a washover terrace. The seaward part of the beach is regularly inundated by wave run-up during high-water phases of the tidal cycle. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Marsh Enumerated_Domain_Value_Definition: Low vegetated wetlands that support plant assemblages tolerant of saltwater. Typically found along the sides of barrier islands protected from ocean waves or along the margins of tidal creeks. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Vegetated Barrier Core Enumerated_Domain_Value_Definition: A low, stable interior part of the barrier island that is sparsely to densely vegetated by salt-tolerant grasses or trees. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Interior Wetland Enumerated_Domain_Value_Definition: Nontidal inundated barrier-island swales that support plant assemblages tolerant of brackish water and freshwater. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Water Enumerated_Domain_Value_Definition: Unclassified water bodies surrounding a barrier island or small bodies of permanent water within the boundaries of an island. This includes both natural water bodies and constructed retention ponds. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Modified Land Enumerated_Domain_Value_Definition: Significant alterations of the land surface for residential and commercial development. Includes paved roads, parking lots, and infrastructure. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Structures Enumerated_Domain_Value_Definition: Miscellaneous manmade features along the shore, including piers, walkways, boat docks and shoreline-protection structures, such as groins and bulkheads. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Structure Zone Enumerated_Domain_Value_Definition: Closely spaced manmade features along the shore, including piers, walkways, boat docks and shoreline-protection structures, such as riprap, groins, and bulkheads. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Dredged Material Enumerated_Domain_Value_Definition: Land formed by the disposal of sediments dredged from adjacent navigation channels. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Enumerated_Domain: Enumerated_Domain_Value: Artificial Dune Enumerated_Domain_Value_Definition: A low linear ridge of sand constructed in the backbeach parallel to the shore to reduce overwash of the barrier island. Includes planted vegetation and other devices designed to trap wind-blown sand. Commonly associated with residential and commercial development. Enumerated_Domain_Value_Definition_Source: Robert A. Morton Attribute_Definition_Source: Robert A. Morton, U.S. Geological Survey Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Person: Robert A. Morton Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S.A. Contact_Voice_Telephone: (727) 803-8747 Contact_Electronic_Mail_Address: rmorton@usgs.gov Hours_of_Service: 8:30 AM - 5:00 PM, Monday - Friday Resource_Description: Open-File Report Distribution_Liability: Although the data published on this CD have been used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data or related items. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Transfer_Size: 8.134 MB Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: www.usgs.gov Fees: none Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2010 Metadata_Reference_Information: Metadata_Date: 20101130 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Contact_Person: Marilyn C. Montgomery Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: FL Postal_Code: 33701 Country: U.S.A. Contact_Voice_Telephone: (727) 803-8747 Contact_Electronic_Mail_Address: mmontgomery@usgs.gov Hours_of_Service: 8:30 AM - 5:00 PM, Monday - Friday Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998