H11250G_HS: 2-m Hill-Shaded Bathymetric Grid of NOAA Survey H11250 of The Race (Geographic)

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: U.S. Geological Survey
Publication_Date: 2007
Title:
H11250G_HS: 2-m Hill-Shaded Bathymetric Grid of NOAA Survey H11250 of The Race (Geographic)
Edition: 1.0
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1012
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/2007/1012/data/bathy/grids/geo/h11250_geo_hlshd2m/h11250g_hs.zip>
Online_Linkage: <http://pubs.usgs.gov/of/2007/1012/html/catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: L.J. Poppe
Originator: M.L. DiGiacomo-Cohen
Originator: E.F. Doran
Originator: S.M. Smith
Originator: H.F. Stewart
Originator: N.A. Forfinski
Publication_Date: 2007
Title:
Geologic Interpretation and Multibeam Bathymetry of the Sea Floor in the Vicinity of the Race, Eastern Long Island Sound
Edition: 1.0
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2007-1012
Publication_Information:
Publication_Place: Woods Hole Science Center, Woods Hole, MA
Publisher: Coastal and Marine Geology Program, U.S. Geological Survey
Other_Citation_Details: Also available on DVD-ROM
Online_Linkage: <http://pubs.usgs.gov/of/2007/1012/>
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.

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 (Koppelman and others, 1976; Long Island Sound Study, 1994). 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 constructed and interpreted mulitbeam bathymetric data within specific areas of special interest. The gridded data presented herein covers a roughly 94 km square area of the sea floor in the area known as the Race at the eastern end of Long Island Sound. The original multibeam bathymetric data were collected during October 2003 as part of charting applications aboard the NOAA Survey Vessel Thomas Jefferson. A Simrad EM1002 multibeam system mounted on the hull of this vessel was used to acquire over 560 km of survey lines from the deeper water (>20 m) parts of the study area. Two 29-foot launches with hull-mounted Reson systems were deployed from the ship and were used to acquire an additional 637 km of survey lines from the shallower areas.

The detailed bathymetic data and their interpretations serve many purposes, including: (1) defining the geological variability of the sea floor, which is one of the primary controls of benthic habitat diversity; (2) improving our understanding of the processes that control the distribution and transport of bottom sediments and the distribution of benthic habitats and associated infaunal community structures; and (3) providing a detailed framework for future research, monitoring, and management activities. The bathymetric data models also serve as base maps for subsequent sedimentological, geochemical, and biological observations, because precise information on environmental setting is important for selection of sampling sites and for accurate interpretation of point measurements.

Purpose:
The purpose of this datalayer is to release a 2-m hill-shaded grid of NOAA survey H11250 in easternmost Long Island Sound and westernmost Block Island Sound. This GIS layer represents a hillshade of the bathymetric grid H11250G. It was created with the sun at an azimuth of 315, altitude angle above the horizon of 30, and a verticle exaggeration of ~10x. This data set serves a starting point for a geologic study of the area surrounding the Race Long Island Sound. As interpretative layers and images are created they will be added to the GIS database. This gridded data can be used in ArcMap or ArcView to dramatically display the varied bathymetry and geologic features of the area.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2003
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -72.154000
East_Bounding_Coordinate: -71.992004
North_Bounding_Coordinate: 41.270996
South_Bounding_Coordinate: 41.188000
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: Woods Hole Science Center
Theme_Keyword: NOAA Ship Thomas Jefferson
Theme_Keyword: grid
Theme_Keyword: ArcGIS
Theme_Keyword: multibeam bathymetry
Theme_Keyword: Long Island Sound Resource Center
Theme_Keyword: LISRC
Theme_Keyword: bathymetry
Theme_Keyword: multibeam bathymetry
Theme_Keyword: H11250
Theme_Keyword: NOAA Survey H11250
Theme_Keyword: hill shaded
Theme_Keyword: sun illuminated
Theme_Keyword: Open-File Report 2007-1012
Theme_Keyword: OFR2007-1012
Theme_Keyword: NOAA Project Identifier OPR-B370-TJ
Theme_Keyword: shaded relief
Theme_Keyword: ArcRaster grid
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: Connecticut Department of Envrionmental Protection
Theme_Keyword: CTDEP
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: elevation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: United States
Place_Keyword: Atlantic Ocean
Place_Keyword: North Atlantic Ocean
Place_Keyword: northeast United States
Place_Keyword: Long Island Sound
Place_Keyword: Connecticut
Place_Keyword: U.S. East Coast
Place_Keyword: New York
Place_Keyword: The Race
Place_Keyword: Block Island Sound
Access_Constraints: None
Use_Constraints:
Data are not to be used for for navigation purposes.

Public domain data are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) and the Connecticut Department of Environmental Protection (CTDEP) as the originators of this dataset.

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/2007/1012/data/bathy/grids/geo/h11250_geo_hlshd2m/h11250g_hs.gif>
Browse_Graphic_File_Description:
Thumbnail of the hill-shaded relief map of the H11250 study area created in ArcMap
Browse_Graphic_File_Type: GIF
Data_Set_Credit:
Source data were acquired during National Oceanic and Atmospheric Administration (NOAA) survey H11250. Please acknowledge NOAA as the originator of the dataset from which this dataset was derived.
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
Cross_Reference:
Citation_Information:
Originator: L.J. Poppe
Originator: M.L. DiGiacomo-Cohen
Originator: E.F. Doran
Originator: S.M. Smith
Originator: H.F. Stewart
Originator: N.A. Forfinski
Publication_Date: 2006
Title:
Seafloor character and sedimentary processes in eastern Long Island Sound and Western Block Island Sound
Series_Information:
Series_Name: Geo-Marine Letters
Issue_Identification: v.26, p. 59-68

Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
The only attribute value represents hillshaded gridded bathymetry - the grid should be displayed in shades of gray to give impression of a shadded relief map.
Completeness_Report:
All collected data were processed and used to generate the gridded data. The area is considered complete; the gaps in the data lie in areas inaccessible to the survey vessels (shallow water surrounding islands).
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Navigation was by differential GPS; positional accuracy to less than 10 m.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: National Oceanic and Atmospheric Administration
Publication_Date: Unpublished Material
Title: B370_03_H11250G_dtm2m_interp.gutm
Type_of_Source_Media: CD-ROM
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: October 2003
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: B370_03_H11250G_dtm2m_interp.gutm
Source_Contribution:
Digital terrain model with 2 m resolution in .gutm format created by National Oceanic and Atmospheric Administration (NOAA). This data format is used for viewing the model with GeoZui3D software.
Process_Step:
Process_Description:
The multibeam bathymetric data presented herein were collected during October 2003 over a roughly 91 km2 area as part of charting applications aboard the NOAA Survey Vessel Thomas Jefferson. A Simrad EM1002 multibeam system mounted on the hull of this vessel was used to acquire over 560 km of survey lines from the deeper water (>20 m) parts of the study area. Two 29-foot launches with hull-mounted Reson systems were deployed from the ship and were used to acquire an additional 637 km of survey lines from the shallower areas. Horizontal resolution of the data varies with water depth, but averages 2 m. Vertical resolution is about 0.5% of the water depth.
Source_Used_Citation_Abbreviation: raw data
Process_Date: 2003
Source_Produced_Citation_Abbreviation: b370_h11250_dtm2m.gutm
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: National Oceanic and Atmospheric Administration
Contact_Person: Shep Smith
Contact_Position: Field Operations Officer
Contact_Address:
Address_Type: mailing and physical address
Address: 439 West York Street
City: Norfolk
State_or_Province: VA
Postal_Code: 23510
Country: USA
Contact_Voice_Telephone: (757) 441-6726
Contact_Electronic_Mail_Address: shep.smith@noaa.gov
Process_Step:
Process_Description: The .gutm file was converted to ASCIIgrid format.
Source_Used_Citation_Abbreviation: b370_h11250_dtm2m.gutm
Process_Date: 2004
Source_Produced_Citation_Abbreviation: b370_03.asc
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Chris Polloni
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: (508) 548-8700 x2280
Contact_Facsimile_Telephone: 508-457-2310
Contact_Electronic_Mail_Address: cpolloni@usgs.gov
Process_Step:
Process_Description:
The ASCIIgrid was converted to ArcGIS GRID format, and then renamed.
Source_Used_Citation_Abbreviation: b370_03.asc
Process_Date: 2004
Source_Produced_Citation_Abbreviation: B370_03
Source_Produced_Citation_Abbreviation: h11250u
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mary DiGiacomo-Cohen
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist / GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: Long Island Sound Resource Center
Address: 1080 Shennecossett Road
City: Groton
State_or_Province: CT
Postal_Code: 06340
Contact_Voice_Telephone: (860) 405-9210
Contact_Electronic_Mail_Address: mdicohen@usgs.gov
Process_Step:
Process_Description:
Grid was projected to geographic coordinates using a bilinear interpolation.
Source_Used_Citation_Abbreviation: h11250u
Process_Date: 2006
Source_Produced_Citation_Abbreviation: h11250g
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mary DiGiacomo-Cohen
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist / GIS Analyst
Contact_Address:
Address: Long Island Sound Resource Center
Address: 1080 Shennecossett Road
City: Groton
State_or_Province: CT
Postal_Code: 06340
Contact_Voice_Telephone: (860) 405-9210
Contact_Electronic_Mail_Address: mdicohen@usgs.gov
Process_Step:
Process_Description:
Hillshade created with ArcMap. Azimuth of 315, Altitude 30, z factor .000104635 (since cell value or z is in meters, and the x,y coordinates are in decimal degrees, a z factor of .000104635 is approximately equal to a 10 times vertical exaggeration).
Source_Used_Citation_Abbreviation: h11250g
Process_Date: 2006
Source_Produced_Citation_Abbreviation: h11250g_hs
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mary DiGiacomo-Cohen
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist / GIS Analyst
Contact_Address:
Address: Long Island Sound Resource Center
Address: 1080 Shennecossett Road
City: Groton
State_or_Province: CT
Postal_Code: 06340
Contact_Voice_Telephone: (860) 405-9210
Contact_Electronic_Mail_Address: mdicohen@usgs.gov
Process_Step:
Process_Description:
The grid was then clipped to remove excess areas of 'no data' surrounding the hillshade grid.
Source_Used_Citation_Abbreviation: h11250g_hs
Process_Date: 2006
Source_Produced_Citation_Abbreviation: h11250g_hs
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mary DiGiacomo-Cohen
Contact_Organization: U.S. Geological Survey
Contact_Position: Geologist / GIS Specialist
Contact_Address:
Address: Long Island Sound Resource Center
Address: 1080 Shennecossett Road
City: Groton
State_or_Province: CT
Postal_Code: 06340
Contact_Voice_Telephone: (860) 405-9210
Contact_Electronic_Mail_Address: mdicohen@usgs.gov

Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Grid Cell
Row_Count: 3966
Column_Count: 7741
Vertical_Count: 1

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Geographic_Coordinate_Units: Decimal degrees
Planar:
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 0.000021
Ordinate_Resolution: 0.000021
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:
Depth_System_Definition:

Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: h11250g_hs
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
Overview_Description:

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 - H11250G_HS - ArcGIS grid format hillshaded bathymetry image
Distribution_Liability:
Although this data set has been used by the U.S. Geological Survey (USGS), National Oceanic and Atmospheric Administration (NOAA), and the Connecticut Department of Environmental Protection (CTDEP), no warranty, expressed or implied, is made by the USGS, NOAA, and the Connecticut DEP 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 these agencies 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 Raster Grid
Format_Information_Content:
One file (h11250g_hs.zip) containing the ArcInfo grid file components, browse graphic, and metadata
File_Decompression_Technique: zip archive
Transfer_Size: 22.362
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<http://pubs.usgs.gov/of/2007/1012/data/bathy/grids/geo/h11250_geo_hlshd2m/h11250g_hs.zip>
Network_Resource_Name: <http://pubs.usgs.gov/of/2007/1012/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 similar to ArcGIS that is capable of reading and processing the data files.
Available_Time_Period:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2007

Metadata_Reference_Information:
Metadata_Date: 20070423
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: 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 Mon Apr 23 09:22:15 2007