H11250G_MOD: Interpretive Data Layer Showing Distribution of Modern Features Within NOAA Survey H11250 (Geographic)

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Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: L.J. Poppe

Originator: M.L. DiGiacomo-Cohen

Publication_Date: 2007

Title:

H11250G_MOD: Interpretive Data Layer Showing Distribution of Modern Features Within NOAA Survey H11250 (Geographic)

Edition: 1.0

Geospatial_Data_Presentation_Form: vector 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/interpretation/modern/h11250g_mod.zip>

Online_Linkage: <http://pubs.usgs.gov/of/2007/1012/data/interpretation/modern/>

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: U.S. Geological Survey, Coastal and Marine Geology Program

Other_Citation_Details: 1 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. Acoustic data collected during hydrographic surveys provide valuable base maps for marine geological interpretations. These maps help define the geological variability of the seafloor (one of the primary controls of benthic habitat diversity); improve 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 provide a detailed framework for future research, monitoring, and management activities. This shapefile represents the interpretation of modern processes and features found on the bathymetric data set of study area H11250, The Race. Sharing of multibeam bathymetric data (NOAA Ship Thomas Jefferson, October 2003 survey H11250) between NOAA's Atlantic Hydrographic Branch and the State of Connecticut/USGS Geologic Mapping Cooperative has yielded a new geologic perspective on approximately 93.75 km2 of the sea floor in the vicinity of The Race, an area where the Orient Point-Fishers Island segment of the Harbor Hill-Roanoke Point-Orient Point-Fishers Island-Charlestown Moraine marks the dividing line between easternmost Long Island Sound and northwestern Block Island Sound. The detailed bathymetry collected by NOAA has been examined in relation to seismic data collected concurrently, as well as archive data collected as part of a long-standing geologic mapping partnership between the State of Connecticut and the U.S. Geological Survey (USGS). These new data reveal previously unknown details of the physical character of the sea floor such as bedforms, moraines, and ship wrecks. These features have been mapped as interpretive GIS data layers that can be used in conjunction with the multibeam grid H11250G or related shaded relief graphics (h11250gcolhs.tif).
Purpose:: To release interpretations the modern geologic features based on data collected during NOAA survey H11250 in easternmost Long Island Sound and westernmost Block Island Sound, in geographic. This GIS layer serves an interpretaion of some modern processes and features (sand wave fields, dump sites) that shape and influence the bathymetry and geometry of the Race, Long Island Sound. 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.
Supplemental_Information:: Original bathymetric data was collected via a Simrad EM1002 multibeam system mounted on the hull of the Thomas Jefferson which acquired 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.

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: -72.142944
East_Bounding_Coordinate: -71.997017
North_Bounding_Coordinate: 41.270111
South_Bounding_Coordinate: 41.190979

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: feature interpretation
Theme_Keyword: multibeam bathymetry
Theme_Keyword: Long Island Sound Resource Center
Theme_Keyword: bedforms
Theme_Keyword: barchanoid sand waves
Theme_Keyword: transverse sand waves
Theme_Keyword: shipwrecks
Theme_Keyword: dredge spoils
Theme_Keyword: H11250
Theme_Keyword: NOAA Survey H11250
Theme_Keyword: features
Theme_Keyword: Open-File Report 2007-1012
Theme_Keyword: OFR2007-1012
Theme_Keyword: NOAA Project Identifier OPR-B370-TJ
Theme_Keyword: WHSC
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: CMGP
Theme_Keyword: LISRC
Theme_Keyword: Connecticut Department of Environmental Protection
Theme_Keyword: CTDEP

Theme:

Theme_Keyword_Thesaurus: IS0 19115 Topic Category
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation

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

Stratum:

Stratum_Keyword_Thesaurus: General
Stratum_Keyword: Holocene

Access_Constraints: None

Use_Constraints:

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/interpretation/modern/h11250g_mod.gif>
Browse_Graphic_File_Description:: Thumbnail image showing the distribution of modern features in the NOAA survey H11250 area.
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: S.M. Smith

Originator: H.F. Stewart

Originator: N.A. Forfinski

Publication_Date: 2007

Title:

Seafloor character and sedimentary processes in eastern Long Island Sound and Western Block Island Sound

Edition: 1.0

Series_Information:

Series_Name: Geo-Marine Letters
Issue_Identification: v. 26, p. 59-68

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:: The attribute values represent interpreted features; accuracy has been checked by the compilers.

Completeness_Report:

The interpretation is considered complete for the data/area provided. There are gaps in the bathymetric source data 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. Interpreted polygons are accurately located given the nature and scale of the features. Previously collected seismic data used to aid the interpretation of the multibeam data was collected by ship navigated by Loran C which is less positional accuracy than GPS.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Originator: National Oceanic and Atmospheric Administration

Originator: Long Island Sound Resource Center, Connecticut DEP

Publication_Date: 2007

Title: h11250g

Geospatial_Data_Presentation_Form: raster digital data

Publication_Information:

Publisher: Long Island Sound Resource Center

Source_Scale_Denominator: 2 m resolution grid

Type_of_Source_Media: computer program

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: October 2003

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: h11250g

Source_Contribution:

Multibeam bathymetric grid with 2 m resolution. This data (and other source and derivative data products) was visually interpreted.

Process_Step:

Process_Description:

The multibeam bathymetric data (in grid, contour, and shaded relief formats) was examined in conjunction with sub-bottom seismic profiles, then sand waves fields were digitized on screen using ArcView in separate shapefiles for barchanoid and transverse types.

Source_Used_Citation_Abbreviation: h11250g

Process_Date: 2004

Source_Produced_Citation_Abbreviation: tsandwaves.shp

Source_Produced_Citation_Abbreviation: bsandwaves.shp

Process_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

Contact_Electronic_Mail_Address: lpoppe@usgs.gov

Process_Step:

Process_Description:

Shapefiles for sandwave fields were coverted to coverage format and combined. Using the multibeam bathymetric data (in grid, contour, and shaded relief formats) as background sandwaves units were edited and ship wrecks and dredge spoils polygons were then digitized on screen using Arc Edit. Polygons cleaned and attributed.

Source_Used_Citation_Abbreviation: h11250g

Source_Used_Citation_Abbreviation: tsandwaves.shp

Source_Used_Citation_Abbreviation: bsandwaves.shp

Process_Date: 2004

Source_Produced_Citation_Abbreviation: h11250modi

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 Rd
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:

Coverage was projected to Geographic coordinates and converted to shapefile format

Source_Used_Citation_Abbreviation: h11250modi

Process_Date: 2006

Source_Produced_Citation_Abbreviation: h11250g_mod

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 Rd
City: Groton
State_or_Province: CT
Postal_Code: 06340

Contact_Voice_Telephone: 860-405-9210

Contact_Electronic_Mail_Address: mdichen@usgs.gov

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 24

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point
Point_and_Vector_Object_Count: 26

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 26

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000001
Longitude_Resolution: 0.000001
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:

Depth_System_Definition:

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: h11250g_mod

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI