Identification_Information: Citation: Citation_Information: Originator: Seth Ackerman Publication_Date: 2005 Title: h43_gh2_c: Hill-Shaded Interpolated Bathymetric Grid for NOAA Survey H11043 Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Publication_Information: Publication_Place: Woods Hole, MA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2005/1145/data/grids/usgsgrids/h43_2m_hs_int.zip Larger_Work_Citation: Citation_Information: Originator: L.J. Poppe Originator: S.D. Ackerman Originator: E.F. Doran Originator: A.L. Beaver Originator: J.M. Crocker Originator: P.T. Schattgen Publication_Date: 2005 Title: Interpolation of reconnaissance multibeam bathymetry from north-central Long Island Sound Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1145 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. geological Survey Online_Linkage: http://pubs.usgs.gov/of/2005/1145 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. The bathymetry data in this data set were collected during 2002 for charting applications as part of NOAA project OPR-B340-RU, survey H11043 aboard the NOAA Ship RUDE. The RUDE, which supports NOAA's east-coast nautical charting mission, is outfitted to acquire single-beam bathymetry with an Odom Echotrac DF-3200 duel frequency echosounder and shallow water multibeam bathymetry with a Reson 8125 system. The Reson multibeam system operates at 455 KHz with a 120 degree across track swath and 240 beams along its swath. Purpose: To release the 2-m interpolated, regridded, and hill-shaded bathymetry generated from NOAA survey H11043 in Long Island Sound off Branford, Connecticut. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.870617 East_Bounding_Coordinate: -72.774403 North_Bounding_Coordinate: 41.236591 South_Bounding_Coordinate: 41.149293 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: Connecticut Department of Environmental Protection Theme_Keyword: CT DEP Theme_Keyword: Woods Hole Science Center Theme_Keyword: NOAA Ship RUDE Theme_Keyword: grid Theme_Keyword: interpotated Theme_Keyword: bathymetry Theme_Keyword: UTM Theme_Keyword: ArcGIS Theme_Keyword: Coastal and Marine Geology Program Place: Place_Keyword: North America Place_Keyword: United States Place_Keyword: Atlantic Ocean Place_Keyword: Connecticut Place_Keyword: Branford Place_Keyword: Long Island Sound Place_Keyword: Branford Reef Place_Keyword: Townshend Ledge Place_Keyword: U.S. East Coast Access_Constraints: None Use_Constraints: NOAA must be acknowledged as the originator of this data set. Data are not for navigation. 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: USGS 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 Data_Set_Credit: NOAA Ship RUDE Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Cross_Reference: Citation_Information: 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, MA Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/of/2004/1003/ Data_Quality_Information: Completeness_Report: All collected data were processed and used to produce the interpolated and gridded dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Navigation was by differential GPS Lineage: Source_Information: Type_of_Source_Media: CD-ROM Source_Contribution: Interpolated and gridded shallow-water multibeam and single beam bathymetric data. Process_Step: Process_Description: The multibeam data for this survey was acquired in XTF (extended Triton data format) and recorded digitally through an ISIS data acquisition system. Once digitally recorded, the XTF data were processed using CARIS HIPS/SIPS software to quality control the data and to incorporate sound velocity and tidal corrections. Data were gridded to 1 m; vertical datum is mean lower low water. Process_Date: 2003 Source_Produced_Citation_Abbreviation: h11043_1m_decimal_degrees.xyz Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Atlantic Hydrographic Branch, NOAA Contact_Address: Address_Type: mailing address Address: Atlantic Hydrographic Branch, NOAA Address: 439 West York Street City: Norfolk State_or_Province: VA Postal_Code: 23510 Country: USA Process_Step: Process_Description: The original multibeam data sets, which are in ASCII comma-delimited text, do not entirely cover the sea floor because line spacing during acquisition was such that areas of no data often are present between the ship's tracks. Therefore, further processing was conducted at the USGS's Woods Hole Science Center to provide bathymetric datasets with more continuous coverage. First, all non-standardized records were assumed to be bad records and were removed. Subsequently, the PROJ.4 cartographic projections library was used to project the data, the SwathEd software produced by the Ocean Mapping Group at the University of New Brunswick was used to create the grids from the actual sounding data, and the GRASS (Geographic Resources Analysis System) was used to create interpolated grids of the bathymetry for each survey. The grid was projected into Universal Transverse Mercator, Zone 18N. Source_Used_Citation_Abbreviation: h11043_1m_decimal_degrees.xyz Process_Date: 2005 Source_Produced_Citation_Abbreviation: h43_2m_int Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: Seth Ackerman Contact_Position: Computer Specialist Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: Massachusetts Office of Coastal Zone Management 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: sackerman@usgs.gov Process_Step: Process_Description: A sun-illuminated surface was generated from the interpolated grids ArcGIS 9 (Arc catalog) with hill-shading from 270 degrees (a direction parallel to most of the ship's tracks) to minimize artifacts and angle of 45 degrees above the horizon. Source_Used_Citation_Abbreviation: h43_2m_int Process_Date: 2005 Source_Produced_Citation_Abbreviation: h43_2m_hs_int Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Seth Ackerman Contact_Organization: U.S. Geological Survey Contact_Position: Computer Specialist Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: Massachusetts Office of coastal Zone Management 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: sackerman@usgs.gov Process_Step: Process_Description: Metadata imported. Source_Used_Citation_Abbreviation: C:\DOCUME~1\lpoppe\LOCALS~1\Temp\xmlC8.tmp Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Grid Cell Row_Count: 4850 Column_Count: 4150 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: 18 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -75.000000 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: 2.000000 Ordinate_Resolution: 2.000000 Planar_Distance_Units: meters 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: h43_gh2_c Attribute: Attribute_Label: ObjectID 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: Value Attribute: Attribute_Label: Count Distribution_Information: Resource_Description: Downloadable Data: 2-m interpolated gridded bathymetry from NOAA survey H11043 Distribution_Liability: Although this data set has been used by the USGS and NOAA, no warranty, expressed or implied, is made by the USGS 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 or NOAA in the use of these data or related materials. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ESRI Raster Grid Format_Specification: Raster Format_Information_Content: One file (h43_2m_hs_int.zip) File_Decompression_Technique: WinZip Transfer_Size: 16.890 Fees: None Technical_Prerequisites: The user must have a program similar to ArcGIS that is capable of reading and processing the data files. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2005 Metadata_Reference_Information: Metadata_Date: 20051102 Metadata_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: USGS 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 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 Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile