Identification_Information: Citation: Citation_Information: Originator: L.J. Poppe Originator: M.L. DiGiacomo-Cohen Publication_Date: 2007 Title: H11250G_MOD: Interpretive Data Layer Showing Distribution of Modern Features Within NOAA Survey H11250 (Geographic) Edition: 1.0 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1012 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/h11250g_mod.zip Online_Linkage: http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/ Online_Linkage: http://pubs.usgs.gov/of/2007/1012/html/catalog.html Larger_Work_Citation: Citation_Information: Originator: L.J. Poppe Originator: M.L. DiGiacomo-Cohen Originator: E.F. Doran Originator: S.M. Smith Originator: H.F. Stewart Originator: N.A. Forfinski Publication_Date: 2007 Title: Geologic Interpretation and Multibeam Bathymetry of the Sea Floor in the Vicinity of the Race, Eastern Long Island Sound Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2007-1012 Publication_Information: Publication_Place: Woods Hole Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Other_Citation_Details: 1 DVD-ROM Online_Linkage: http://pubs.usgs.gov/of/2007/1012/ 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. Acoustic data collected during hydrographic surveys provide valuable base maps for marine geological interpretations. These maps help define the geological variability of the seafloor (one of the primary controls of benthic habitat diversity); improve 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 provide a detailed framework for future research, monitoring, and management activities. This shapefile represents the interpretation of modern processes and features found on the bathymetric data set of study area H11250, The Race. Sharing of multibeam bathymetric data (NOAA Ship Thomas Jefferson, October 2003 survey H11250) between NOAA's Atlantic Hydrographic Branch and the State of Connecticut/USGS Geologic Mapping Cooperative has yielded a new geologic perspective on approximately 93.75 km2 of the sea floor in the vicinity of The Race, an area where the Orient Point-Fishers Island segment of the Harbor Hill-Roanoke Point-Orient Point-Fishers Island-Charlestown Moraine marks the dividing line between easternmost Long Island Sound and northwestern Block Island Sound. The detailed bathymetry collected by NOAA has been examined in relation to seismic data collected concurrently, as well as archive data collected as part of a long-standing geologic mapping partnership between the State of Connecticut and the U.S. Geological Survey (USGS). These new data reveal previously unknown details of the physical character of the sea floor such as bedforms, moraines, and ship wrecks. These features have been mapped as interpretive GIS data layers that can be used in conjunction with the multibeam grid H11250G or related shaded relief graphics (h11250gcolhs.tif). Purpose: To release interpretations the modern geologic features based on data collected during NOAA survey H11250 in easternmost Long Island Sound and westernmost Block Island Sound, in geographic. This GIS layer serves an interpretaion of some modern processes and features (sand wave fields, dump sites) that shape and influence the bathymetry and geometry of the Race, Long Island Sound. The detailed bathymetic data 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 bathymetric data models 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. Supplemental_Information: Original bathymetric data was collected via a Simrad EM1002 multibeam system mounted on the hull of the Thomas Jefferson which acquired over 560 km of survey lines from the deeper water (>20 m) parts of the study area. Two 29-foot launches with hull-mounted Reson systems were deployed from the ship and were used to acquire an additional 637 km of survey lines from the shallower areas. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2003 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.142944 East_Bounding_Coordinate: -71.997017 North_Bounding_Coordinate: 41.270111 South_Bounding_Coordinate: 41.190979 Keywords: Theme: Theme_Keyword_Thesaurus: General Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: Woods Hole Science Center Theme_Keyword: NOAA Ship Thomas Jefferson Theme_Keyword: feature interpretation Theme_Keyword: multibeam bathymetry Theme_Keyword: Long Island Sound Resource Center Theme_Keyword: bedforms Theme_Keyword: barchanoid sand waves Theme_Keyword: transverse sand waves Theme_Keyword: shipwrecks Theme_Keyword: dredge spoils Theme_Keyword: H11250 Theme_Keyword: NOAA Survey H11250 Theme_Keyword: features Theme_Keyword: Open-File Report 2007-1012 Theme_Keyword: OFR2007-1012 Theme_Keyword: NOAA Project Identifier OPR-B370-TJ Theme_Keyword: WHSC Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: LISRC Theme_Keyword: Connecticut Department of Environmental Protection Theme_Keyword: CTDEP Theme: Theme_Keyword_Thesaurus: IS0 19115 Topic Category Theme_Keyword: oceans and estuaries Theme_Keyword: oceans and coastal Theme_Keyword: geoscientificInformation Place: Place_Keyword_Thesaurus: General Place_Keyword: North America Place_Keyword: United States Place_Keyword: Atlantic Ocean Place_Keyword: North Atlantic Ocean Place_Keyword: northeast United States Place_Keyword: Long Island Sound Place_Keyword: Connecticut Place_Keyword: U.S. East Coast Place_Keyword: New York Place_Keyword: The Race Place_Keyword: Block Island Sound Stratum: Stratum_Keyword_Thesaurus: General Stratum_Keyword: Holocene 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) and the Connecticut Department of Environmental Protection (CTDEP) as the originators of this dataset. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Larry Poppe Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2314 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/h11250g_mod.gif Browse_Graphic_File_Description: Thumbnail image showing the distribution of modern features in the NOAA survey H11250 area. Browse_Graphic_File_Type: GIF Data_Set_Credit: Source data were acquired during National Oceanic and Atmospheric Administration (NOAA) survey H11250. Please acknowledge NOAA as the originator of the dataset from which this dataset was derived. Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780 Cross_Reference: Citation_Information: Originator: L.J. Poppe Originator: M.L. DiGiacomo-Cohen Originator: S.M. Smith Originator: H.F. Stewart Originator: N.A. Forfinski Publication_Date: 2007 Title: Seafloor character and sedimentary processes in eastern Long Island Sound and Western Block Island Sound Edition: 1.0 Series_Information: Series_Name: Geo-Marine Letters Issue_Identification: v. 26, p. 59-68 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The attribute values represent interpreted features; accuracy has been checked by the compilers. Completeness_Report: The interpretation is considered complete for the data/area provided. There are gaps in the bathymetric source data in areas inaccessible to the survey vessels (shallow water surrounding islands). Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation was by differential GPS; positional accuracy to less than 10 m. Interpreted polygons are accurately located given the nature and scale of the features. Previously collected seismic data used to aid the interpretation of the multibeam data was collected by ship navigated by Loran C which is less positional accuracy than GPS. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Originator: National Oceanic and Atmospheric Administration Originator: Long Island Sound Resource Center, Connecticut DEP Publication_Date: 2007 Title: h11250g Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publisher: Long Island Sound Resource Center Source_Scale_Denominator: 2 m resolution grid Type_of_Source_Media: computer program Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: October 2003 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: h11250g Source_Contribution: Multibeam bathymetric grid with 2 m resolution. This data (and other source and derivative data products) was visually interpreted. Process_Step: Process_Description: The multibeam bathymetric data (in grid, contour, and shaded relief formats) was examined in conjunction with sub-bottom seismic profiles, then sand waves fields were digitized on screen using ArcView in separate shapefiles for barchanoid and transverse types. Source_Used_Citation_Abbreviation: h11250g Process_Date: 2004 Source_Produced_Citation_Abbreviation: tsandwaves.shp Source_Produced_Citation_Abbreviation: bsandwaves.shp Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Larry Poppe Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 Contact_Electronic_Mail_Address: lpoppe@usgs.gov Process_Step: Process_Description: Shapefiles for sandwave fields were coverted to coverage format and combined. Using the multibeam bathymetric data (in grid, contour, and shaded relief formats) as background sandwaves units were edited and ship wrecks and dredge spoils polygons were then digitized on screen using Arc Edit. Polygons cleaned and attributed. Source_Used_Citation_Abbreviation: h11250g Source_Used_Citation_Abbreviation: tsandwaves.shp Source_Used_Citation_Abbreviation: bsandwaves.shp Process_Date: 2004 Source_Produced_Citation_Abbreviation: h11250modi Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Mary DiGiacomo-Cohen Contact_Organization: U.S. Geological Survey Contact_Position: Geologist / GIS Analyst Contact_Address: Address_Type: mailing and physical address Address: Long Island Sound Resource Center Address: 1080 Shennecossett Rd City: Groton State_or_Province: CT Postal_Code: 06340 Contact_Voice_Telephone: (860) 405-9210 Contact_Electronic_Mail_Address: mdicohen@usgs.gov Process_Step: Process_Description: Coverage was projected to Geographic coordinates and converted to shapefile format Source_Used_Citation_Abbreviation: h11250modi Process_Date: 2006 Source_Produced_Citation_Abbreviation: h11250g_mod Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Mary DiGiacomo-Cohen Contact_Organization: U.S. Geological Survey Contact_Position: Geologist/ GIS Specialist Contact_Address: Address: Long Island Sound Resource Center Address: 1080 Shennecossett Rd City: Groton State_or_Province: CT Postal_Code: 06340 Contact_Voice_Telephone: 860-405-9210 Contact_Electronic_Mail_Address: mdichen@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: 24 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Label point Point_and_Vector_Object_Count: 26 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains Point_and_Vector_Object_Count: 26 SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Point Point_and_Vector_Object_Count: 4 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 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 Vertical_Coordinate_System_Definition: Depth_System_Definition: Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: h11250g_mod 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: AREA Attribute_Definition: Area of feature in internal units squared. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: PERIMETER Attribute_Definition: Perimeter of feature in internal units. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Positive real numbers that are automatically generated. Attribute: Attribute_Label: INTERPRETA Attribute_Definition: modern feature interpretation Attribute_Definition_Source: compiler Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: ship wreck Enumerated_Domain_Value_Definition: ship wreck Enumerated_Domain_Value_Definition_Source: compiler Enumerated_Domain: Enumerated_Domain_Value: barchanoid sand waves Enumerated_Domain_Value_Definition: barchanoid sand waves Enumerated_Domain_Value_Definition_Source: compiler Enumerated_Domain: Enumerated_Domain_Value: transverse sand waves Enumerated_Domain_Value_Definition: transverse sand waves Enumerated_Domain_Value_Definition_Source: compiler Enumerated_Domain: Enumerated_Domain_Value: dredge spoils Enumerated_Domain_Value_Definition: area of multiple, often overlapping, mounds of dumped dredged materials Enumerated_Domain_Value_Definition_Source: compiler Overview_Description: Entity_and_Attribute_Overview: Polygons are interpreted to represent the modern features which influence the bathymetry such as sand wave fields, shipwrecks, and dredge spoils. Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Larry Poppe Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Country: USA Contact_Voice_Telephone: 508-548-8700 x2314 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: lpoppe@usgs.gov Resource_Description: Downloadable Data - H11250g_mod - ArcGIS shapefile Distribution_Liability: Although this data set has been used by the U.S. Geological Survey (USGS), Connecticut Department of Environmental Protection (CTDEP) and the National Oceanic and Atmospheric Administration (NOAA), no warranty, expressed or implied, is made by the USGS, CTDEP or NOAA 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, CTDEP or NOAA in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: SHP Format_Specification: ESRI Shapefile Format_Information_Content: One file (h11250g_mod.zip) containg the shapefile, browse graphic, and metadata Transfer_Size: 0.057 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/h11250g_mod.zip Network_Resource_Name: http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/ Network_Resource_Name: http://pubs.usgs.gov/of/2007/1012/html/catalog.html Access_Instructions: Data are downloadable via the World Wide Web (WWW) Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.75 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Metadata_Reference_Information: Metadata_Date: 20070423 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Larry Poppe Contact_Organization: U.S. Geological Survey Contact_Position: Geologist Contact_Address: Address_Type: mailing and physical address Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 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 Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile