H12012_2M_UTM: 2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H12012 Offshore in Northeastern Long Island Sound (UTM Zone 18, NAD83)
Originator: National Oceanic and Atmospheric Administration
Originator: U.S. Geological Survey
Publication_Date: 2013
Title:
H12012_2M_UTM: 2-m Bathymetric Grid of National Oceanic and Atmospheric Administration (NOAA) Survey H12012 Offshore in Northeastern Long Island Sound (UTM Zone 18, NAD83)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2013-1060
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
The U.S. Geological Survey (USGS), in cooperation with the National Oceanic and Atmospheric Administration (NOAA) and the Connecticut Department of Energy and Environmental Protection (CT DEEP), has produced detailed geologic maps of the coastal sea floor. Bathymetry, originally collected by NOAA for charting purposes, provides a fundamental framework for research and management activities in Long Island Sound, shows the terrain of the seabed, and provides information on sediment transport and benthic habitat. During April 2009 NOAA completed hydrographic survey H12012 offshore in the northeastern Sound, and during April 2010 and May 2010 bottom photographs and surficial sediment data were acquired as part of two ground-truth reconnaissance surveys of this area. Two interpretive data layers were derived from the multibeam echo-sounder and the ground-truth data used to verify them. For more information on the ground-truth surveys see: <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-010-FA> and <http://woodshole.er.usgs.gov/operations/ia/public_ds_info.php?fa=2010-015-FA>
Purpose:
To release a 2-m grid of the multibeam bathymetry generated during NOAA survey H12012 offshore in northeastern Long Island Sound in UTM Zone 18, NAD83.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090418
Ending_Date: 20090430
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.405344
East_Bounding_Coordinate: -72.140579
North_Bounding_Coordinate: 41.268110
South_Bounding_Coordinate: 41.191141
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Coastal and Marine Science Center
Theme_Keyword: multibeam bathymetry
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: WHCMSC
Theme_Keyword: NOAA survey H12012
Theme_Keyword: H12012
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: grid
Theme_Keyword: Open-File Report 2013-1060
Theme_Keyword: ArcRaster grid
Theme_Keyword: OFR 2013-1060
Theme_Keyword: RESON 7125
Theme_Keyword: bathymetry
Theme_Keyword: Connecticut Department of Energy and Environmental Protection
Theme_Keyword: CT DEEP
Theme_Keyword: NOAA Ship Thomas Jefferson
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: elevation
Theme_Keyword: oceans
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Connecticut
Place_Keyword: U.S. East Coast
Place_Keyword: United States
Place_Keyword: North America
Place_Keyword: Atlantic Ocean
Place_Keyword: Long Island Sound
Place_Keyword: Old Lyme
Place_Keyword: Old Saybrook
Place_Keyword: Cornfield Point
Place_Keyword: Black Point
Place_Keyword: Long Sand Shoal
Place_Keyword: Connecticut River
Place_Keyword: Hatchett Point
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.
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 positions of the ship acquiring multibeam bathymetry were determined with Trimble DSM212L DGPS receivers. Best expected position accuracy of the ship with the Trimble system less than 1 meter.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Attitude of the vessel (e.g. pitch, roll, and heave) acquiring multibeam bathymetry was monitored by an Applanix TSS POS/MV 320 Version 3 GPS aided navigation system. The vertical resolution of the original bathymetry data is approximately 0.5% of the water depth. Tidal zone corrections were calculated from the tide stations at New London and New Haven, Connecticut.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
National Ocean Survey, National Oceanic and Atmospheric Administration
Publication_Date: Unpublished Material
Title: H12012 bathymetry
Geospatial_Data_Presentation_Form: raster digital data
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20090418
Ending_Date: 20090430
Source_Currentness_Reference: ground condition
Source_Contribution: Original processed multibeam bathymetric data.
Process_Step:
Process_Description:
The NOAA Ship Thomas Jefferson was used to acquire the multibeam echosounder (MBES) bathymetric data for survey H12012 during April 2009 offshore in northeastern Long Island Sound. The MBES data were collected aboard the ship with a RESON 7125 system which measured two-way sound travel time across a 140-degree swath. Original horizontal resolution of the MBES data was 0.5 m for depths less than 20 m and 1 m for the deeper areas. Vertical resolution of the MBES data is about 0.5% of the water depth. The bathymetric data were acquired and logged with HYPACK Hysweep 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. All positioning and attitude were determined with Trimble DSM212L DGPS receivers and Applanix POS/MV Model 320 v.4 inertial navigation systems; HYPACK 2009 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 three to four hours of MBES acquisition. Tidal zone corrections were calculated from the tide stations at New London and New Haven, Connecticut. Vertical datum is mean lower low water. Individuals interested in detail descriptions of the MBES acquisition and processing should consult the Descriptive and Data Acquisition and Processing reports. The combined data were gridded to 2-m resolution and saved as a CARIS HIPS/SIPS v6.1 SP2 database in UTM Zone 18, NAD83 and as a Fledermaus SD file.
The IVS SD file provided by NOAA NOS (H12012_1_CUBE_NOAA_2m_Final.sd) was opened using IVS DMagic v7.3.1a and the SD surface was exported to an Esri ASCII raster grid (H12012_1_CUBE_NOAA_2m_Final.asc)
The Esri ASCII raster grid file was then imported into ArcMap v9.3.1 and converted to an Esri 32-bit floating point grid using the ASCII to Raster conversion tool (ArcToolbox - Conversion Tools - To Raster - ASCII to Raster).
Defined the projection as UTM Zone 18, NAD83 using ArcCatalog v9.3.1 (ArcToolbox - Data Management Tools - Projections and Transformations - Define Projection).
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Mean lower low water
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
A 2-m grid of the multibeam bathymetry from NOAA survey H12012 in the UTM Zone 18, NAD83 coordinate system.
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 Energy and Environmental Protection (CT DEEP) 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 DEEP 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: ARCG
Format_Specification: ESRI ArcRaster Grid
Format_Information_Content:
One file (h12012_2m_utm.zip) containing the ArcGIS grid file components, browse graphic and metadata.
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: Mbytes
Recording_Format: UDF
Fees: None
Technical_Prerequisites:
The user must have a program capable of reading the Esri grid data format. The user must have software capable of uncompressing archived zip files, such as WinZip or Pkware. The directory structure as it appears in the WinZip file must be maintained or else the binary grid is unusable.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2013
Metadata_Reference_Information:
Metadata_Date: 20130418
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