Identification_Information: Citation: Citation_Information: Originator: Lawrence J. Poppe Publication_Date: 2004 Title: TEXTURE: surficial sediment distribution interpretation of the sidescan sonar mosaic of NOAA survey H11043 off Branford, Connecticut Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: Data are released via CD-ROM media. Online_Linkage: http://pubs.usgs.gov/of/2004/1003/data/interp/sedimentinterp/texture.zip Larger_Work_Citation: Citation_Information: Originator: L.J. Poppe Originator: V.F. Paskevich Originator: M.S. Moser Originator: M.L. DiGiacomo-Cohen Originator: E.B. Christman Publication_Date: 2004 Title: Sidescan Sonar Imagery and Surficial Geologic Interpretation of the Sea Floor off Branford, Connecticut Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2004-1003 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: This digital publication may also be available via the web at pubs.usgs.gov Online_Linkage: http://pubs.usgs.gov/of/2004/1003 Online_Linkage: http://woodshole.er.usgs.gov/openfile/of2004-1003 Description: Abstract: The U.S. Geological Survey, in cooperation with the National Oceanic and Atmospheric Administration and the Connecticut Department of Environmental Protection, has produced detailed geologic maps of the sea floor in Long Island Sound, a major East Coast estuary surrounded by the most densely populated region of the United States. These studies have built upon cooperative research with the State of Connecticut that was initiated in 1982. The current phase of this research program is directed toward studies of sea-floor sediment distribution, processes that control sediment distribution, nearshore environmental concerns, and the relation of benthic community structures to the sea-floor geology. Anthropogenic wastes, toxic chemicals, and changes in land-use patterns resulting from residential, commercial, and recreational development have stressed the environment of the Sound, causing degradation and potential loss of benthic habitats (Koppelman and others, 1976; Long Island Sound Study, 1994). Detailed maps of the sea floor are needed to help evaluate the extent of adverse impacts and to help manage resources wisely in the future. Therefore, in a continuing effort to better understand Long Island Sound, we have constructed and interpreted sidescan sonar mosaics (complete-coverage acoustic images of the sea floor) within specific areas of special interest (Poppe and Polloni, 1998; fig. 1). The mosaic presented herein covers a 41.1 km square area of the sea floor in north-central Long Island Sound off Branford, Connecticut. The mosaics and their interpretations serve many purposes, including: (1) defining the geological variability of the sea floor, which is one of the primary controls of benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and the distribution of benthic habitats and associated infaunal community structures; and (3) providing a detailed framework for future research, monitoring, and management activities. The sidescan sonar mosaics also serve as base maps for subsequent sedimentological, geochemical, and biological observations, because precise information on environmental setting is important for selection of sampling sites and for accurate interpretation of point measurements. Purpose: This GIS overlay is a component of the Branford Survey, Long Island Sound, ArcView GIS database and shows the surficial sediment distribution within the study area. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.869918 East_Bounding_Coordinate: -72.776520 North_Bounding_Coordinate: 41.236011 South_Bounding_Coordinate: 41.151390 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: Connecticut DEP Theme_Keyword: Woods Hole Science Center Theme_Keyword: NOAA Ship RUDE Theme_Keyword: sediment Theme_Keyword: texture Theme_Keyword: gravel Theme_Keyword: gravelly sediment Theme_Keyword: sand Theme_Keyword: silty sand Theme_Keyword: sand silt clay Theme_Keyword: clayey silt Theme_Keyword: sedimentary interpretation Theme_Keyword: ArcView Theme_Keyword: Geographic Information System Place: Place_Keyword_Thesaurus: General Place_Keyword: North America Place_Keyword: United States Place_Keyword: east coast Place_Keyword: northeast Place_Keyword: US Atlantic East Coast Place_Keyword: Atlantic Margin Place_Keyword: Long Island Sound Place_Keyword: Northeast United States Place_Keyword: North Atlantic Place_Keyword: Connecticut Place_Keyword: U.S. East Coast Place_Keyword: Townshend Ledge Place_Keyword: Branford Reef Place_Keyword: Branford Access_Constraints: None Use_Constraints: Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the originator of this dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Lawrence J. Poppe Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: (508) 548-8700 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: texture Browse_Graphic_File_Description: Overview showing the coverage and extent of the sediment texture interpretation data layer for the H11043 NOAA sidescan sonar mosaic. Browse_Graphic_File_Type: GIF Data_Set_Credit: Lawrence J. Poppe, U.S. Geological Survey, must be referenced as the originator of the dataset in any future products or research derived from these data. Native_Data_Set_Environment: Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800 Data_Quality_Information: Logical_Consistency_Report: All polygons were constructed in a consistent manner. No additional checks for topological consistency were performed on this data. Completeness_Report: Interpretations of the sediment distribution across the sidescan sonar mosaic were completed using tonal changes and all available textural data. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Interpretations based on tonal changes in the osaic whose navigation was by differential GPS; positional accuracy to less than 10 . Lineage: Source_Information: Type_of_Source_Media: CD-ROM Process_Step: Process_Description: The surficial sediment distribution across the mosaic was interpreted and polygons for each type of feature were produced in ArcView as shapefiles. The shapefiles were then combined using GeoProcessing Wizard. Source_Used_Citation_Abbreviation: lisseddata.shp Source_Used_Citation_Abbreviation: h11043_geo.tif Process_Date: 20031031 Source_Produced_Citation_Abbreviation: texture.shp Source_Produced_Citation_Abbreviation: texture.dbf Source_Produced_Citation_Abbreviation: texture.avl Source_Produced_Citation_Abbreviation: texture.shx Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Lawrence J. Poppe Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2314 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov 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: 92 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000000 Longitude_Resolution: 0.000000 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D_WGS_1984 Ellipsoid_Name: WGS_1984 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257224 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: texture Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: ID Attribute_Definition: Generated number Attribute_Definition_Source: ArcView Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 0 Attribute: Attribute_Label: SEDCLASS Attribute_Definition: Textural classification according to Shepard (1954) Attribute_Definition_Source: Scientist Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: Gravel Enumerated_Domain_Value_Definition: Sediment grain size greater than 2 mm Enumerated_Domain_Value_Definition_Source: Scientist Enumerated_Domain: Enumerated_Domain_Value: Gravelly sediment Enumerated_Domain_Value_Definition: Sediment greater than 10 percent gravel Enumerated_Domain_Value_Definition_Source: Scientist Enumerated_Domain: Enumerated_Domain_Value: Sand Enumerated_Domain_Value_Definition: Sediment mostly greater than 0.062 mm, but less than 2 mm Enumerated_Domain_Value_Definition_Source: Scientist Enumerated_Domain: Enumerated_Domain_Value: Silty Sand Enumerated_Domain_Value_Definition: Sand with significant (greater than 20 percent) silt Enumerated_Domain_Value_Definition_Source: Scientist Enumerated_Domain: Enumerated_Domain_Value: Sand Silt Clay Enumerated_Domain_Value_Definition: Sediment with significant sand, silt, and clay Enumerated_Domain_Value_Definition_Source: Scientist Enumerated_Domain: Enumerated_Domain_Value: Clayey silt Enumerated_Domain_Value_Definition: Silt with significant clay Enumerated_Domain_Value_Definition_Source: Scientist Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Lawrence J. Poppe Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: 508-454-8700 x2314 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov Resource_Description: Downloadable Data Distribution_Liability: Although this data set has been used by the USGS, NOAA, and the State of Connecticut, no warranty, expressed or implied, is made by the USGS, NOAA, or the State of Connecticut as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS, NOAA, or the State of Connecticut in the use of these data or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ArcView Format_Version_Number: 3.3 Format_Specification: ESRI shapefile Format_Information_Content: Six files (texture.shp, texture.shx, texture.dbf, texture.sbn, texture.sbx, texture.avl) File_Decompression_Technique: no compression applied Transfer_Size: 0.258 Digital_Transfer_Option: Offline_Option: Offline_Media: CD-ROM Recording_Capacity: Recording_Density: 650 Recording_Density_Units: Mbytes Recording_Format: ISO9660 Compatibility_Information: The user must have a CD-ROM capable of reading an ISO9660 standard CD-ROM Fees: None Technical_Prerequisites: The data are available in the ESRI shapefile format. The user must have Environmental Systems Research Institute's (ESRI) ArcView 3.0 or greater or ArcGIS software to read and process the data file. In lieu of Arcview, the user may utilize another GIS application package capable of importing the data. A free GIS data viewer, ArcExplorer, is available from the ESRI website at www.esri.com/software/arcexplorer/download4.html Access to the data and information contained on this CD-ROM was developed using the HyperText Markup Language (HTML) utilized by the World Wide Web (WWW) project. Development of the CD-ROM documentation and user interface in HTML allows a user to access the information by using a variety of WWW information browsers to facilitate browsing and locating information and data. To access the information contained on this disk with a WWW client browser, open the file 'index.htm' at the top level directory of this CD-ROM with your selected browser. This CD-ROM should be readable by a variety of operating systems including Windows 95/98/NT, Macintosh and UNIX. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Metadata_Reference_Information: Metadata_Date: 20040219 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Lawrence J. Poppe Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: U.S. Geological Survey Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Country: USA Contact_Voice_Telephone: (508) 548-8700 x2314 Contact_Facsimile_Telephone: (508) 457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov 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