H11044_1_5MDDEG_XYZ.TXT: Original Uninterpolated 1.5-m Bathymetry from NOAA Survey H11044 off Milford, Connecticut

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration
Publication_Date: 2008
Title:
H11044_1_5MDDEG_XYZ.TXT: Original Uninterpolated 1.5-m Bathymetry from NOAA Survey H11044 off Milford, Connecticut
Edition: 1.0
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1146
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/2008/1146/data/bathy/grids/geo/asciigrid/h11044_1_5mddeg_xyz.zip>
Online_Linkage:
<http://pubs.usgs.gov/of/2008/1146/data/bathy/grids/geo/asciigrid/h11044_1_5mddeg_xyz.txt>
Online_Linkage: <http://pubs.usgs.gov/of/2008/1146/html/catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: L.J. Poppe
Originator: S.D. Ackerman
Originator: K.Y. McMullen
Originator: P.T. Schattgen
Originator: J.D. Schaer
Originator: E.F. Doran
Publication_Date: 2008
Title:
Interpolation of Reconnaissance Multibeam and Single-Beam Bathymetry Offshore of Milford, Connecticut
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2008-1146
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/2008/1146/>
Description:
Abstract:
During 2001 the NOAA Ship RUDE completed charting survey H11044 that covered a roughly 293 km2 area of the sea floor in north-central Long Island Sound, off Milford Connecticut. Although 100 percent coverage was achieved with sidescan sonar for charting purposes, only reconnaissance (spaced line) bathymetry was acquired with shallow-water multibeam and single-beam systems. Therefore, further processing was conducted at the USGS's Woods Hole Science Center to provide bathymetric datasets with more continuous coverage. This project produced grids and GeoTIFF imagery of the combined and interpolated shallow-water multibeam and single-beam bathymetry generated from the northern part of this data set. Anthropogenic wastes, toxic chemicals, and changes in land-use patterns resulting from residential, commercial, and recreational development have stressed the environment of the Sound, causing degradation and potential loss of benthic habitats. Detailed maps of the sea floor are needed to help evaluate the extent of adverse impacts and to help manage resources wisely in the future. Therefore, in a continuing effort to better understand Long Island Sound, we have interpolated and gridded shallow-water multibeam and single-beam bathymetric data within specific areas of special interest.
Purpose:
To release the ASCII file containing the 1.5-m horizontally spaced bathymetry generated from NOAA survey H11044 in north-central Long Island Sound off Milford, Connecticut. This file contains the entire dataset, and not just the northern section covered by the other datasets released as part of this project.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010507
Ending_Date: 20011113
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.131256
East_Bounding_Coordinate: -72.936531
North_Bounding_Coordinate: 41.2463314
South_Bounding_Coordinate: 41.023193
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: multibeam bathymetry
Theme_Keyword: bathymetry
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: WHSC
Theme_Keyword: NOAA survey H11044
Theme_Keyword: H11044
Theme_Keyword: National Oceanic and Atmospheric Administration
Theme_Keyword: NOAA
Theme_Keyword: Reson 8125
Theme_Keyword: Open-File Report 2008-1146
Theme_Keyword: ASCII text
Theme_Keyword: OFR 2008-1146
Theme_Keyword: point grid
Theme_Keyword: single-beam bathymetry
Theme_Keyword: shallow-water multibeam
Theme_Keyword: Reson SeaBat 9003 echosounder
Theme_Keyword: Odom Echotrac DF-3200 echosounder
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: Milford
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: Stratford Point
Place_Keyword: Charles Island
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) as the originator 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:
<http://pubs.usgs.gov/of/2008/1146/data/bathy/grids/geo/asciigrid/h11044_1_5mddeg_xyz.gif>
Browse_Graphic_File_Description:
Thumbnail image showing the extent of soundings collected during NOAA survey H11044
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350
Cross_Reference:
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: 2006
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: Woods Hole Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <http://pubs.usgs.gov/of/2005/1145/>

Data_Quality_Information:
Completeness_Report:
All collected data from NOAA survey H11044 were processed and used to produce this dataset.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: Navigation was by differential GPS
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
The vertical resolution of the shallow-water multibeam data is approximately 0.5% of the water depth.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Type_of_Source_Media: DVD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20010507
Ending_Date: 20011113
Source_Currentness_Reference: ground condition
Source_Contribution:
The original processed shallow-water multibeam and single-beam bathymetric data.
Process_Step:
Process_Description:
The multibeam data were acquired in XTF (extended Triton data format) and recorded digitally through an ISIS data acquisition system. A Reson SeaBat 9003 echosounder was used to acquire the shallow-water multibeam bathymetric data and an Odom Echotrac DF-3200 dual-frequency echosounder was used to acquire the single-beam bathymetry from the NOAA ship Rude. An Odom Echotrac DF-3200 dual-frequency echosounder hull-mounted on a 23' launch deployed from the NOAA ship Rude was used to acquire sounding data in the shallower areas. These data were processed using CARIS HIPS (Hydrographic Image Processing System) software for quality control, and to incorporate sound velocity and tidal corrections. 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 multibeam acquisition. Tidal zone corrections were calculated from data acquired at tidal gauges at Bridgeport and NewHaven, Connecticut, and at Kings Point, New York. The vertical resolution of the shallow-water multibeam data is approximately 0.5% of the water depth. The data were gridded to 1.5-m resolution and exported in text (.txt) format. Vertical datum is mean lower low water; X and Y units are decimal degrees.
Process_Date: Unknown
Source_Produced_Citation_Abbreviation: h11044_1_5mddeg_xyz.txt
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Oceanic and Atmospheric Administration
Contact_Person: Tod Schattgen
Contact_Position: Commanding Officer
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: 757-647-0187
Contact_Electronic_Mail_Address: Tod.Schattgen@noaa.gov

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Point

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.000000001
Longitude_Resolution: 0.000000001
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:
Altitude_System_Definition:
Depth_System_Definition:
Depth_Datum_Name: Mean lower low water
Depth_Resolution: 0.001
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Three space separated values per record. Value one is latitude in decimal degrees of the ship coordinate; value 2 is the longitude in decimal degrees the ship's coordinate; value three is the acquired depth value. The depth value is recorded in meters (to three decimal places) as a positive value.

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 (File size: Text version 2.74Gb, WinZipped version 7.86 Mb)
Distribution_Liability:
Neither the U.S. Government, the Department of the Interior, the USGS, NOAA, Connecticut Department of Environmental Protection, 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. 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: ASCII
Format_Information_Content:
The ASCII data (h11044_1_5mddeg_xyz.txt), browse graphic, and metadata. Caution: The downloadable files are large: text version is 2.74 Gb, the WinZipped version is 786 Mb.
File_Decompression_Technique: zip archive
Transfer_Size: 786.0 Mb
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2008/1146/data/bathy/grids/geo/asciigrid/h11044_1_5mddeg_xyz.zip>
Network_Resource_Name:
<http://pubs.usgs.gov/of/2008/1146/data/bathy/grids/geo/asciigrid/h11044_1_5mddeg_xyz.txt>
Network_Resource_Name: <http://pubs.usgs.gov/of/2008/1146/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:
The user must have a program capable of reading and processing ASCII formatted XYZ data files.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2008

Metadata_Reference_Information:
Metadata_Date: 20080930
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

Generated by mp version 2.8.6 on Tue Sep 30 11:21:43 2008