Metadata: Identification_Information: Citation: Citation_Information: Originator: National Oceanic and Atmospheric Administration Originator: U.S. Geological Survey Publication_Date: 2011 Title: Color Shaded-Relief GeoTIFF Image Showing the Combined 4-m Multibeam and LIDAR Bathymetry Generated from National Oceanic and Atmospheric Administration (NOAA) Surveys H11224, H11225, H11250, H11251, H11252, H11361, H11441, H11442, H11445, H11446, H11997, H11999, H12012, and H12013 offshore in eastern Long Island Sound and westernmost Block Island Sound (ELISCOMB_4MBAT_GEO.TIF, Geographic, WGS84) Edition: 1.0 Geospatial_Data_Presentation_Form: remote-sensing image Series_Information: Series_Name: Open-File Report Issue_Identification: 2011-1003 Publication_Information: Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA Publisher: U.S. Geological Survey, Coastal and Marine Geology Program Online_Linkage: https://doi.org/10.3133/ofr20111003 Online_Linkage: https://pubs.usgs.gov/of/2011/1003/html/catalog.html Online_Linkage: https://pubs.usgs.gov/of/2011/1003/data/bathy/geotifs/geo/eliscomb_4mbat_geo.zip Larger_Work_Citation: Citation_Information: Originator: L.J. Poppe Originator: W.W. Danforth Originator: K.Y. McMullen Originator: C.E. Parker Originator: E.F. Doran Publication_Date: 2011 Title: Combined Multibeam and LIDAR Bathymetry Data from Eastern Long Island Sound and Westernmost Block Island Sound - A Regional Perspective Edition: 1.0 Series_Information: Series_Name: Open-File Report Issue_Identification: 2011-1003 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 1 DVD-ROM Online_Linkage: https://pubs.usgs.gov/of/2011/1003/ Description: Abstract: The USGS, in cooperation with NOAA and the Connecticut DEP, is producing detailed maps of the seafloor in Long Island Sound. The current phase of this cooperative research program is directed toward analyzing how bathymetric relief relates to the distribution of sedimentary environments and benthic communities. As part of this program, digital terrain models (DTMs) from bathymetry collected as part of NOAA's hydrographic charting activities are converted into ESRI raster grids and imagery (primarily of 2-m resolution), verified with bottom sampling and photography, and used to produce interpretations of seabed geology and hydrodynamic processes. Although each of the 18 completed surveys, ranging in area from 12 to 293 square kilometers, individually provides important benthic environmental information, many applications require a geographically broader perspective. For example, the usefulness of individual surveys is limited for the planning and construction of cross-Sound infrastructure, such as cables and pipelines, or for the testing of regional circulation models. To address this need, we integrated 12 multibeam and 2 LIDAR (Light Detection and Ranging) contiguous bathymetric DTMs into one dataset that covers much of eastern Long Island Sound. The new dataset is adjusted to mean lower low water, is provided in UTM Zone 18 NAD83 and geographic WGS84 projections, and is gridded to 4-m resolution. This resolution is adequate for seafloor-feature and process interpretation, but small enough to be queried and manipulated with standard GIS programs and to allow for future growth. Natural features visible in the grid include exposed bedrock outcrops, boulder lag deposits of submerged moraines, sand-wave fields, and scour depressions that reflect the strength of the oscillating tidal currents. Bedform asymmetry allows interpretations of net sediment transport. Anthropogenic artifacts visible in the bathymetric data include a dredged channel, shipwrecks, dredge spoils, mooring anchors, prop-scour depressions, buried cables, and bridge footings. Together the merged data reveal a larger, more continuous perspective of bathymetric topography than previously available, providing a fundamental framework for research and resource management activities in this major east-coast estuary. Purpose: To release a color shaded-relief GeoTIFF of the 4-m combined multibeam and LIDAR bathymetry generated from NOAA surveys H11224, H11225, H11250, H11251, H11252, H11361, H11441, H11442, H11445, H11446, H11997, H11999, H12012, and H12013 offshore in eastern Long Island Sound and westernmost Block Island Sound in geographic, WGS84 coordinates. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20031006 Ending_Date: 20090517 Currentness_Reference: ground condition (See the source citation in the lineage section for individual component's specific dates.) Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -72.666572 East_Bounding_Coordinate: -71.975086 North_Bounding_Coordinate: 41.391500 South_Bounding_Coordinate: 41.079363 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:ba91ad31-836b-49e3-a1f9-ac6a9da9ae5e Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: USGS Woods Hole Coastal and Marine Science Center Theme_Keyword: multibeam bathymetry Theme_Keyword: LIDAR Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: CMGP Theme_Keyword: WHCMSC Theme_Keyword: NOAA survey H11441 Theme_Keyword: NOAA survey H11224 Theme_Keyword: National Oceanic and Atmospheric Administration Theme_Keyword: NOAA Theme_Keyword: GeoTIFF Theme_Keyword: Open-File Report 2011-1003 Theme_Keyword: OFR 2011-1003 Theme_Keyword: RESON 8125 Theme_Keyword: RESON 8101 Theme_Keyword: hill-shaded Theme_Keyword: H11441 Theme_Keyword: H11224 Theme_Keyword: Connecticut Department of Environmental Protection Theme_Keyword: CT DEP Theme_Keyword: bathymetry Theme_Keyword: NOAA survey H11225 Theme_Keyword: NOAA survey H11442 Theme_Keyword: H11225 Theme_Keyword: H11442 Theme_Keyword: NOAA survey H11250 Theme_Keyword: NOAA survey H11251 Theme_Keyword: NOAA survey H11252 Theme_Keyword: NOAA survey H11361 Theme_Keyword: NOAA survey H11445 Theme_Keyword: NOAA survey H11446 Theme_Keyword: NOAA survey H11997 Theme_Keyword: NOAA survey H11999 Theme_Keyword: NOAA survey H12012 Theme_Keyword: NOAA survey H12013 Theme_Keyword: H11250 Theme_Keyword: H11251 Theme_Keyword: H11252 Theme_Keyword: H11361 Theme_Keyword: H11445 Theme_Keyword: H11446 Theme_Keyword: H11997 Theme_Keyword: H11999 Theme_Keyword: H12012 Theme_Keyword: H12013 Theme_Keyword: RESON 7125 Theme_Keyword: Simrad EM1002 Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: elevation Theme_Keyword: oceans Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: sea-floor characteristics Theme_Keyword: marine geophysics Theme_Keyword: computational methods Theme_Keyword: geospatial datasets Theme_Keyword: multibeam sonar Theme_Keyword: lidar Place: Place_Keyword_Thesaurus: None Place_Keyword: Connecticut Place_Keyword: New London Place_Keyword: U.S. East Coast Place_Keyword: United States Place_Keyword: North America Place_Keyword: Atlantic Ocean Place_Keyword: Fishers Island Place_Keyword: Groton Place_Keyword: Avery Point Place_Keyword: New York Place_Keyword: Pine Island Place_Keyword: Niantic Place_Keyword: Niantic Bay Place_Keyword: Twotree Island Place_Keyword: Giants neck Place_Keyword: Black Point Place_Keyword: Long Island Sound Place_Keyword: Fishers Island Sound Place_Keyword: The Race Place_Keyword: Orient Point Place_Keyword: Plum Island Place_Keyword: Rocky Point Place_Keyword: Six Mile Reef Place_Keyword: Long Sand Shoal Place_Keyword: Old Saybrook Place_Keyword: Connecticut River Access_Constraints: None Use_Constraints: Data are not to be used for navigation purposes. Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the National Oceanic and Atmospheric Administration (NOAA) and U.S. Geological Survey (USGS) as the originators of this information. 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: https://pubs.usgs.gov/of/2011/1003/data/bathy/geotifs/geo/eliscomb_4mbat_geo.gif Browse_Graphic_File_Description: Browse image of a 4-m hill-shaded GeoTIFF of the combined bathymetry from NOAA surveys H11224, H11225, H11250, H11251, H11252, H11361, H11441, H11442, H11445, H11446, H11997, H11999, H12012, and H12013 offshore in eastern Long Island Sound and westernmost Block Island Sound in geographic, WGS84 coordinates. Browse_Graphic_File_Type: GIF Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500 Cross_Reference: Citation_Information: Originator: Emily B. Christman Publication_Date: 2005 Title: H11441 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11441 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11441/DR/H11441.pdf Cross_Reference: Citation_Information: Originator: Darren Stephenson Publication_Date: 2004 Title: H11224 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11224 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11224/DR/H11224.pdf Cross_Reference: Citation_Information: Originator: Poppe, L.J. Originator: Ackerman, S.D. Originator: Doran, E.F. Originator: Beaver, A.J. Originator: Crocker, J.M. Originator: Schattgen, P.T. Publication_Date: 2007 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: https://pubs.usgs.gov/of/2005/1145/ Cross_Reference: Citation_Information: Originator: Emily B. Christman Publication_Date: 2005 Title: H11442 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11442 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11442/DR/H11442.pdf Cross_Reference: Citation_Information: Originator: Darren Stephenson Publication_Date: 2004 Title: H11225 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11225 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11225/DR/H11225.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2008 Title: H11251 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11251 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11251/DR/H11251.pdf Cross_Reference: Citation_Information: Originator: Donald W. Haines Publication_Date: 2003 Title: H11250 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11250 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11250/DR/H11250.pdf Cross_Reference: Citation_Information: Originator: Emily B. Christman Publication_Date: 2004 Title: H11252 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11252 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11252/DR/H11252.pdf Cross_Reference: Citation_Information: Originator: Emily B. Christman Publication_Date: 2004 Title: H11361 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11361 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11361/DR/H11361.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2008 Title: H11445 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11445 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11445/DR/H11445.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2008 Title: H11446 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11446 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11446/DR/H11446.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2008 Title: H11997 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H11997 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11997/DR/H11997.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2008 Title: H11999 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: H11999 Issue_Identification: Descriptive Report Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H10001-H12000/H11999/DR/H11999.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2009 Title: H12012 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H12012 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12012/DR/H12012.pdf Cross_Reference: Citation_Information: Originator: P. Tod Schattgen Publication_Date: 2009 Title: H12013 Edition: 1.0 Geospatial_Data_Presentation_Form: document Series_Information: Series_Name: Descriptive Report Issue_Identification: H12013 Publication_Information: Publication_Place: Atlantic Hydrographic Branch, Norfolk, VA Publisher: National Ocean Survey, National Oceanic and Atmospheric Administration Online_Linkage: http://surveys.ngdc.noaa.gov/mgg/NOS/coast/H12001-H14000/H12013/DR/H12013.pdf Cross_Reference: Citation_Information: Originator: Poppe, L.J. Originator: Danforth, W.W. Originator: McMullen, K.Y. Originator: Parker, C.E. Originator: Lewit, P.G. Originator: Doran, E.F. Publication_Date: 2010 Title: Integrated multibeam and LIDAR bathymetry data offshore of New London and Niantic, Connecticut Edition: 1.0 Geospatial_Data_Presentation_Form: GIS data report Series_Information: Series_Name: Open-File Report Issue_Identification: 2009-1231 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Other_Citation_Details: 1 CD-ROM Online_Linkage: https://pubs.usgs.gov/of/2009/1231/ Data_Quality_Information: Logical_Consistency_Report: No additional checks for consistency were performed on this data. Completeness_Report: All collected data were processed and used to produce this dataset. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Horizontal position of the launches acquiring multibeam bathymetry were determined using GPS corrected by U.S. Coast Guard differential GPS beacon stations at Moriches, NY, Sandy Hook, NJ, and Acushnet, MA. Real-time positioning during LIDAR acquisition was obtained by an Ashtech GG24 GPS receiver combined with Thales GeoSolutions Wide Area DGPS. Original horizontal resolution of the MBES data was 0.5 - 2 m; original cell size of the gridded LIDAR data was primarily 4 m. The final CARIS combined base surfaces for the MBES data were produced at a 2-m cell size; final cell size of the gridded LIDAR data was 4 m. Vertical_Positional_Accuracy: Vertical_Positional_Accuracy_Report: Attitude of the launches (e.g. pitch, roll, and heave) acquiring multibeam bathymetry were monitored by an Applanix TSS POS/MV 320 Version 3 GPS aided navigation system. Real-time positioning during LIDAR acquisition was obtained by an Ashtech GG24 GPS receiver combined with Thales GeoSolutions Wide Area DGPS. Ashtech Z12 GPS receivers, provided as part of the Airborne System and Ground Systems, also logged GPS data on the aircraft and at a locally established base station to provide post processed KGPS position solutions. Received infrared laser energy, supplemented by an Altitude Heading Reference System (AHRS) inertial height reference and kinematic GPS, determined the height of the aircraft. Verified water levels are based on NWLON stations 8461490, New London, CT and 8465705, New Haven, CT. The vertical resolution of the multibeam data is approximately 0.5% of the water depth. Although there are no depth attributes associated with the GeoTIFF image, pixel values convey RGB values of individual cells. Warmer colors (e.g. red) are shallower depths; cooler colors are deeper. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Emily B. Christman Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11441 bathymetry Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20050427 Ending_Date: 20050522 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11441 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Originator: Darren Stephenson Publication_Date: Unpublished Material Title: H11224 bathymetry Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040120 Ending_Date: 20040305 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11224 bathymetry Source_Contribution: Original processed LIDAR bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Originator: Emily B. Christman Publication_Date: Unpublished Material Title: H11442 bathymetry Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20050418 Ending_Date: 20050506 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11442 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Originator: Darren Stephenson Publication_Date: Unpublished Material Title: H11225 bathymetry Edition: 1.0 Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20040120 Ending_Date: 20040305 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11225 bathymetry Source_Contribution: Original processed LIDAR bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Donald W. Haines Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11250 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20031006 Ending_Date: 20031101 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11250 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11251 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer harddrive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20081007 Ending_Date: 20081027 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11251 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Emily B. Christman Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11252 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20041024 Ending_Date: 20041115 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11252 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: Emily B. Christman Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11361 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20041011 Ending_Date: 20041115 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11361 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11445 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080916 Ending_Date: 20081001 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11445 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11446 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080922 Ending_Date: 20081021 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11446 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11997 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20080915 Ending_Date: 20081029 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11997 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H11999 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20081002 Ending_Date: 20081029 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H11999 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H12012 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090418 Ending_Date: 20090430 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H12012 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Source_Information: Source_Citation: Citation_Information: Originator: P. Tod Schattgen Originator: Atlantic Hydrographic Branch, National Ocean Survey, National Oceanic and Atmospheric Administration, Norfolk, VA Publication_Date: Unpublished Material Title: H12013 bathymetry Geospatial_Data_Presentation_Form: raster digital data Type_of_Source_Media: computer hard drive Source_Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 20090419 Ending_Date: 20090517 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: H12013 bathymetry Source_Contribution: Original processed multibeam bathymetric data. Process_Step: Process_Description: The NOAA Ship Thomas Jefferson, and two 8.5-m aluminum Jensen launches deployed from the ship, were used to acquire the multibeam echosounder (MBES) bathymetric data between October 2003 and May 2009 for surveys H11250, H11251, H11252, H11361, H11441, H11442 H11445, H11446, H11997, H11999, H12012, and H12013. Aboard the launches, the MBES data were collected with hull-mounted RESON SeaBat 240-kHz 8101 and 455-kHz 8125 shallow-water systems. These systems measure two-way sound travel time across a 150-degree swath and 120-degree swath, respectively. The SeaBat 8101 has 101 beams at a 1.5-degree beam spacing. The SeaBat 8125 has 240 beams with a cross-track beam width of 0.5 degrees at nadir. Aboard the Thomas Jefferson, MBES data for surveys H11250, H11252, and H11361 were collected with a SIMRAD EM1002 system; later surveys were collected with a RESON 7125 system. Original horizontal resolution of the MBES data was 0.5 to 2 m, depending on survey and water depth; vertical resolution of the MBES data is about 0.5% of the water depth. The bathymetric data were acquired in XTF (extended Triton data format) and processed by NOAA using CARIS HIPS (Hydrographic Image Processing System) software for quality control, to incorporate sound velocity and tidal corrections, and to produce the continuous digital terrain model. Navigation was by TSS POS/MV 320 differential GPS-assisted inertial navigation systems; the differential GPS beacons used were from Moriches, New York, and Sandy Hook, New Jersey. HYPACK MAX was used for acquisition line navigation. Sound velocity corrections were derived using frequent SEACAT CTD (conductivity-temperature-depth) profiles. Typically, a CTD cast was conducted every four to six hours of MBES acquisition. Tidal zone corrections were calculated from data acquired from National Water Level Observation stations at New London, Connecticut, New Haven, Connecticut, and Montauk, New York. Vertical datum is mean lower low water. Individuals interested in detail descriptions of the MBES acquisition and processing should consult the descriptive reports. Eleven reconnaissance cruises were conducted aboard a leased lobster boat to monitor water clarity prior to commencement of airborne LIDAR operations of surveys H11224 and H11225. These cruises, which utilized Secchi disks to determine water clarity, were conducted between the Connecticut River and Fishers Island during May 9, 2003 and January 11, 2004, when water clarity was deemed adequate. The LIDAR (light detection and ranging) data were acquired by Tenix LADS, Inc. during January 25 - March 3, 2004 with a LADS Mk II system. Airborne survey operations were conducted aboard a Dash 8-202 series aircraft with a Nd:YAG laser at heights between 1,200 and 2,200 feet, at ground speeds between 140 and 210 knots, and at 4x4 and 3x3-m laser-spot spacings. Green laser pulses were scanned beneath the aircraft in a rectilinear pattern. The returned green-laser energy reflected from the sea surface and seafloor were captured and digitally recorded. Received infrared laser energy, supplemented by an Altitude Heading Reference System (AHRS) inertial height reference and kinematic GPS, determined the height of the aircraft. Real-time positioning was provided by WADGPS (wide area differential global positioning system). Acquired data were processed with CARIS HIPS. Individuals interested in detail descriptions of the MBES and LIDAR acquisition and processing should consult the descriptive reports. Vertical datum is mean lower low water; X and Y units are meters; UTM Zone 18, NAD83. Process_Date: Unknown Source_Produced_Citation_Abbreviation: H11224 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11225 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11250 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11251 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11252 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11361 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11441 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11442 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11445 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11446 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11997 CARIS HIPS database Source_Produced_Citation_Abbreviation: H11999 CARIS HIPS database Source_Produced_Citation_Abbreviation: H12012 CARIS HIPS database Source_Produced_Citation_Abbreviation: H12013 CARIS HIPS database Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: National Oceanic and Atmospheric Administration Contact_Person: Castle E. Parker Contact_Position: Hydrographer Contact_Address: Address_Type: mailing address Address: 439 West York Street City: Norfolk State_or_Province: VA Postal_Code: 23510 Country: USA Contact_Voice_Telephone: 757-441-6746 Contact_Electronic_Mail_Address: castle.e.parker@noaa.gov Process_Step: Process_Description: The field sheets from the surveys (average depths, not the shoal based field sheets) were read back into CARIS HIPS/SIPS software version 7.0. Using the Base Surface -> Combine command within HIPS, all of the source CARIS base surfaces were combined into a master BASE surface (eliscomb) having a 4 meter grid resolution. Source_Used_Citation_Abbreviation: H11224 CARIS HIPS database Source_Used_Citation_Abbreviation: H11225 CARIS HIPS database Source_Used_Citation_Abbreviation: H11250 CARIS HIPS database Source_Used_Citation_Abbreviation: H11251 CARIS HIPS database Source_Used_Citation_Abbreviation: H11252 CARIS HIPS database Source_Used_Citation_Abbreviation: H11361 CARIS HIPS database Source_Used_Citation_Abbreviation: H11441 CARIS HIPS database Source_Used_Citation_Abbreviation: H11442 CARIS HIPS database Source_Used_Citation_Abbreviation: H11445 CARIS HIPS database Source_Used_Citation_Abbreviation: H11446 CARIS HIPS database Source_Used_Citation_Abbreviation: H11997 CARIS HIPS database Source_Used_Citation_Abbreviation: H11999 CARIS HIPS database Source_Used_Citation_Abbreviation: H12012 CARIS HIPS database Source_Used_Citation_Abbreviation: H12013 CARIS HIPS database Process_Date: 2010 Source_Produced_Citation_Abbreviation: eliscomb Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bill Danforth 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 Country: USA Contact_Voice_Telephone: 508-548-8700 x2274 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bdanforth@usgs.gov Process_Step: Process_Description: A color, hill-shaded GeoTIFF image with a world file was exported from CARIS in the UTM projection of the original field sheets (UTM zone 18N, horizontal datum NAD83). Sun illumination is from the north at 45 degrees above the horizon, and vertical exaggeration is 5x. Source_Used_Citation_Abbreviation: eliscomb Process_Date: 2010 Source_Produced_Citation_Abbreviation: eliscomb_4mbat_utm18.tif Source_Produced_Citation_Abbreviation: eliscomb_4mbat_utm18.tfw Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bill Danforth 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 Contact_Voice_Telephone: 508-548-8700 x2274 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bdanforth@usgs.gov Process_Step: Process_Description: The UTM projected GeoTIFF was imported into ArcGIS v9.3 and reprojected using the data management tool Project Raster (ArcToolbox, Data Management Tools, Projections and Transformations) from UTM Zone 18N, NAD 83 to Geographic, WGS84. The options specified in the Project Raster tool were: 1. Input coordinate system: NAD_1983_UTM_Zone_18N 2. Output coordinate system: GCS_WGS_1984 3. Geographic transformation method: NAD_1983_WGS_1984_5 4. Resampling technique: BILINEAR 5. Output cell size: 0.000043 (decimal degrees, default as calculated by ArcMap for a 4 meter cell size) The geographic transformation selected is the most accurate one provided by ESRI as it ties in WGS84 with ITRF96, thus reflecting the earth centered offset (x-y-z) between WGS84 and NAD83 (from the ESRI Knowledge Base Document Number 24159). Source_Used_Citation_Abbreviation: eliscomb_4mbat_utm18.tif Process_Date: 2010 Source_Produced_Citation_Abbreviation: eliscomb_4mbat_geo.tif Source_Produced_Citation_Abbreviation: eliscomb_4mbat_geo.tfw Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Bill Danforth 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 Contact_Voice_Telephone: 508-548-8700 x2274 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: bdanforth@usgs.gov Process_Step: Process_Description: Edits to the metadata were made to fix any errors that MP v 2.9.46 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Reordered the links in the identification section so a landing page link is first. Added the source citation abbreviation and used the title for the value. Attempted to modify http to https where appropriate. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20180516 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: USGS Thesaurus keywords added to the keyword section. Process_Date: 20180720 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200908 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543-1598 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Raster Raster_Object_Information: Raster_Object_Type: Pixel Row_Count: 7277 Column_Count: 16121 Vertical_Count: 1 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000043 Longitude_Resolution: 0.000043 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: Overview_Description: Entity_and_Attribute_Overview: A color-encoded hill-shaded GeoTIFF of the combined bathymetry data from NOAA surveys H11224, H11225, H11250, H11251, H11252, H11361, H11441, H11442, H11445, H11446, H11997, H11999, H12012, and H12013 offshore in eastern Long Island Sound and westernmost Block Island Sound in geographic, WGS84 coordinates. There are no attributes associated with the GeoTIFF image. Pixel values convey RGB values of individual cells. Warmer colors (e.g. red) are shallower depths; cooler colors (e.g. blues) are deeper. Entity_and_Attribute_Detail_Citation: U.S. Geological Survey Distribution_Information: Distributor: 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 Resource_Description: Downloadable Data Distribution_Liability: Neither the U.S. Government, the Department of the Interior, nor the USGS, nor the National Oceanic and Atmospheric Administration (NOAA), nor the Connecticut Department of Environmental Protection (CT DEP) nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS, NOAA, or the CT DEP 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: TIFF Format_Version_Number: Information unavailable from original metadata. Format_Specification: GeoTIFF Format_Information_Content: One file (eliscomb_4mbat_geo.zip) containing the GeoTIFF, world file, browse graphic and metadata. File_Decompression_Technique: zip archive Transfer_Size: 72.2 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://pubs.usgs.gov/of/2011/1003/data/bathy/geotifs/geo/eliscomb_4mbat_geo.zip Network_Resource_Name: https://pubs.usgs.gov/of/2011/1003/html/catalog.html Access_Instructions: Data are downloadable via the World Wide Web (WWW). Offline_Option: Offline_Media: DVD-ROM Recording_Capacity: Recording_Density: 4.7 Recording_Density_Units: Gbytes Recording_Format: UDF Fees: None Technical_Prerequisites: This image is available as a GeoTIFF image with an accompanying world file. To utilize this data, the user must have an image viewer, image processing or GIS software package capable of importing a GeoTIFF image. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware. Available_Time_Period: Time_Period_Information: Single_Date/Time: Calendar_Date: 2011 Metadata_Reference_Information: Metadata_Date: 20211116 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: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid. 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