NOAA > NESDIS > NCEI (formerly NGDC) > Marine Geology and Geophysics > Bathymetry & Relief privacy policy  All Bathy/Relief Coastal DEMs Fishing Global Lakes Multibeam NOS

Report for H12479 Locality: Long Island Sound Sublocality: 4 NM South of Guilford Pt, CT State(s) or Region(s): Connecticut Start Date: 2012-10-02 End Date: 2012-10-17 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download All Products for H12479 Download times vary depending on file size and data transfer rates. Individual product files may be downloaded via the links below. Launch this map service in full-screen view | Visit the full NCEI Bathymetric Data Viewer Survey Products Descriptive Report and Metadata Documents NOAA/NOS Descriptive Reports and Metadata Documents Products listed in these reports may not reflect final products available through NCEI. H12479_DR.pdf 2.69MB The document may be read using a free PDF reader. H12479_DR.xml 37.2KB Descriptive Report in XML format. May be opened using a web browser or text viewer. NOAA/NOS ISO metadata record H12479 View / Download H12479.xml Usually presented as an XML document, which captures the basic characteristics of HSMDB metadata verified from H10000 (1982) to the present as well as F00200 (1965) to the present. Bathymetry Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details. Variable Resolution Bathymetric Attributed Grid (VR BAG) The Variable Resolution BAG format is a gridded, multi-dimensional, multi-resolution bathymetric data file readable with geospatial visualization software (various commercial solutions, freeware, and open source applications are available). H12479_MB_VR_MLLW.bag 678.21MB NOAA/NOS Sounding Data Download data from the Point Store database via NEXT (NCEI Extract System). Point soundings are from the survey Smooth Sheet or of similar density. Depths in meters. Horizontal datum is (converted to) NAD83 if possible. Vertical datum is (converted to) Mean Lower Low Water if possible. Please check the associated metadata to confirm the correct datums. The data file format is : SurveyID, Long, Lat, Depth and delivered as .xyz. H12479 Imagery GeoImagePDF Georeferenced PDF file including chart and survey layers. H12479_GeoImage.pdf 24.12MB NOAA/NOS multibeam acoustic backscatter mosaic in TIFF format The multibeam acoustic backscatter mosaic is readable with geospatial visualization software (various commercial solutions, freeware, and open source applications are available). H12479_MBAB_2m_3101_400kHz_1of2.tiff 11.89MB H12479_MBAB_2m_3102_400kHz_2of2.tiff 11.39MB Bottom Samples and Tide Documents NOAA/NOS Tide Note in PDF Format H12479_tn.pdf 41.5KB NOAA/NOS Tide Zone in PDF format H12479_tz.pdf 255.5KB Project Documents Project Sketch in JPEG format Project sketch image with highlighted survey area. H12479_ProjectSketch.jpg 41.9KB Data Acquisition and Processing Report in PDF format OPR-B370-TJ-12_DAPR.pdf 4.57MB Survey Metadata Survey Summary Locality Sublocality State or Region Long Island Sound 4 NM South of Guilford Pt, CT Connecticut Start Date End Date Approval Date 2012-10-02 2012-10-17 2013-03-07 Project Number Project Name Purpose OPR-B370-TJ-12 Eastern Long Island Sound Update Nautical Chart(s) Source of Original Data and License Information License Information These data were produced by NOAA and are in the public domain within the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). View the license deed. View the legal code. Reference System Information Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 Projected UTM 18 10000 Survey Tide Stations COOPS Tide Station ID New London, Connecticut 8461490 New Haven, Connecticut 8465705 Affected Products ENCs RNCs US5CN15M US4NY1GM 12373 12354 Junction Surveys H12484 H12480 H11999 H11252 H11043 Survey Equipment Vessel(s) Chief(s) of Party Jensen Launch 3101 Jensen Launch 3102 Lawrence T. Krepp Manufacturer Model Instrument Type Reson 7125 SV1 MBES Source Data at NCEI Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 234.47 2020-09-09 14:37:54.0 BACKSCATTER, BATHYMETRY