U.S. Geological Survey Open-File Report 2004-1003 

TEXTURE: surficial sediment distribution interpretation of the sidescan sonar mosaic of NOAA survey H11043 off Branford, Connecticut

Metadata also available as: FAQ | TEXT

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: Lawrence J. Poppe

Publication_Date: 2004

Title:

TEXTURE: surficial sediment distribution interpretation of the sidescan sonar mosaic of NOAA survey H11043 off Branford, Connecticut

Geospatial_Data_Presentation_Form: vector digital data

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

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

Other_Citation_Details: Data are released via CD-ROM media.

Online_Linkage:

<http://pubs.usgs.gov/of/2004/1003/data/interp/sedimentinterp/texture.zip>

Larger_Work_Citation:

Citation_Information:

Originator: L.J. Poppe

Originator: V.F. Paskevich

Originator: M.S. Moser

Originator: M.L. DiGiacomo-Cohen

Originator: E.B. Christman

Publication_Date: 2004

Title:

Sidescan Sonar Imagery and Surficial Geologic Interpretation of the Sea Floor off Branford, Connecticut

Edition: 1.0

Series_Information:

Series_Name: Open-File Report

Issue_Identification: 2004-1003

Publication_Information:

Publication_Place: Woods Hole Science Center, Woods Hole, MA

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

Other_Citation_Details:

This digital publication may also be available via the web at pubs.usgs.gov

Online_Linkage: <http://pubs.usgs.gov/of/2004/1003>

Online_Linkage: <http://woodshole.er.usgs.gov/openfile/of2004-1003>

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 sidescan sonar mosaics (complete-coverage acoustic images of the sea floor) within specific areas of special interest (Poppe and Polloni, 1998; fig. 1). The mosaic presented herein covers a 41.1 km square area of the sea floor in north-central Long Island Sound off Branford, Connecticut.

 

The mosaics 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 sidescan sonar mosaics 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:

This GIS overlay is a component of the Branford Survey, Long Island Sound, ArcView GIS database and shows the surficial sediment distribution within the study area.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2004

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -72.869918

East_Bounding_Coordinate: -72.776520

North_Bounding_Coordinate: 41.236011

South_Bounding_Coordinate: 41.151390

Keywords:

Theme:

Theme_Keyword_Thesaurus: General

Theme_Keyword: U.S. Geological Survey

Theme_Keyword: USGS

Theme_Keyword: Coastal and Marine Geology Program

Theme_Keyword: CMGP

Theme_Keyword: National Oceanic and Atmospheric Administration

Theme_Keyword: NOAA

Theme_Keyword: Connecticut DEP

Theme_Keyword: Woods Hole Science Center

Theme_Keyword: NOAA Ship RUDE

Theme_Keyword: sediment

Theme_Keyword: texture

Theme_Keyword: gravel

Theme_Keyword: gravelly sediment

Theme_Keyword: sand

Theme_Keyword: silty sand

Theme_Keyword: sand silt clay

Theme_Keyword: clayey silt

Theme_Keyword: sedimentary interpretation

Theme_Keyword: ArcView

Theme_Keyword: Geographic Information System

Place:

Place_Keyword_Thesaurus: General

Place_Keyword: North America

Place_Keyword: United States

Place_Keyword: east coast

Place_Keyword: northeast

Place_Keyword: US Atlantic East Coast

Place_Keyword: Atlantic Margin

Place_Keyword: Long Island Sound

Place_Keyword: Northeast United States

Place_Keyword: North Atlantic

Place_Keyword: Connecticut

Place_Keyword: U.S. East Coast

Place_Keyword: Townshend Ledge

Place_Keyword: Branford Reef

Place_Keyword: Branford

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) as the originator of this dataset.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Lawrence J. Poppe

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: U.S. Geological Survey

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: (508) 548-8700

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: lpoppe@usgs.gov

Browse_Graphic:

Browse_Graphic_File_Name: texture

Browse_Graphic_File_Description:

Overview showing the coverage and extent of the sediment texture interpretation data layer for the H11043 NOAA sidescan sonar mosaic.

Browse_Graphic_File_Type: GIF

Data_Set_Credit:

Lawrence J. Poppe, U.S. Geological Survey, must be referenced as the originator of the dataset in any future products or research derived from these data.

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.1 (Build 2600) Service Pack 1; ESRI ArcCatalog 8.3.0.800

Data_Quality_Information:

Logical_Consistency_Report:

All polygons were constructed in a consistent manner. No additional checks for topological consistency were performed on this data.

Completeness_Report:

Interpretations of the sediment distribution across the sidescan sonar mosaic were completed using tonal changes and all available textural data.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Interpretations based on tonal changes in the osaic whose navigation was by differential GPS; positional accuracy to less than 10 .

Lineage:

Source_Information:

Type_of_Source_Media: CD-ROM

Process_Step:

Process_Description:

The surficial sediment distribution across the mosaic was interpreted and polygons for each type of feature were produced in ArcView as shapefiles. The shapefiles were then combined using GeoProcessing Wizard.

Source_Used_Citation_Abbreviation: lisseddata.shp

Source_Used_Citation_Abbreviation: h11043_geo.tif

Process_Date: 20031031

Source_Produced_Citation_Abbreviation: texture.shp

Source_Produced_Citation_Abbreviation: texture.dbf

Source_Produced_Citation_Abbreviation: texture.avl

Source_Produced_Citation_Abbreviation: texture.shx

Process_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Lawrence J. Poppe

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: U.S. Geological Survey

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: (508) 548-8700 x2314

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: lpoppe@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: 92

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

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

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: texture

Attribute:

Attribute_Label: FID

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: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: ID

Attribute_Definition: Generated number

Attribute_Definition_Source: ArcView

Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0

Range_Domain_Maximum: 0

Attribute:

Attribute_Label: SEDCLASS

Attribute_Definition: Textural classification according to Shepard (1954)

Attribute_Definition_Source: Scientist

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Gravel

Enumerated_Domain_Value_Definition: Sediment grain size greater than 2 mm

Enumerated_Domain_Value_Definition_Source: Scientist

Enumerated_Domain:

Enumerated_Domain_Value: Gravelly sediment

Enumerated_Domain_Value_Definition: Sediment greater than 10 percent gravel

Enumerated_Domain_Value_Definition_Source: Scientist

Enumerated_Domain:

Enumerated_Domain_Value: Sand

Enumerated_Domain_Value_Definition: Sediment mostly greater than 0.062 mm, but less than 2 mm

Enumerated_Domain_Value_Definition_Source: Scientist

Enumerated_Domain:

Enumerated_Domain_Value: Silty Sand

Enumerated_Domain_Value_Definition: Sand with significant (greater than 20 percent) silt

Enumerated_Domain_Value_Definition_Source: Scientist

Enumerated_Domain:

Enumerated_Domain_Value: Sand Silt Clay

Enumerated_Domain_Value_Definition: Sediment with significant sand, silt, and clay

Enumerated_Domain_Value_Definition_Source: Scientist

Enumerated_Domain:

Enumerated_Domain_Value: Clayey silt

Enumerated_Domain_Value_Definition: Silt with significant clay

Enumerated_Domain_Value_Definition_Source: Scientist

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Lawrence J. Poppe

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: U.S. Geological Survey

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

Country: USA

Contact_Voice_Telephone: 508-454-8700 x2314

Contact_Facsimile_Telephone: (508) 457-2310

Contact_Electronic_Mail_Address: lpoppe@usgs.gov

Resource_Description: Downloadable Data

Distribution_Liability:

Although this data set has been used by the USGS, NOAA, and the State of Connecticut, no warranty, expressed or implied, is made by the USGS, NOAA, or the State of Connecticut 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 the USGS, NOAA, or the State of Connecticut in the use of these data or related materials.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: ArcView

Format_Version_Number: 3.3

Format_Specification: ESRI shapefile

Format_Information_Content:

Six files (texture.shp, texture.shx, texture.dbf, texture.sbn, texture.sbx, texture.avl)

File_Decompression_Technique: no compression applied

Transfer_Size: 0.258

Digital_Transfer_Option:

Offline_Option:

Offline_Media: CD-ROM

Recording_Capacity:

Recording_Density: 650

Recording_Density_Units: Mbytes

Recording_Format: ISO9660

Compatibility_Information:

The user must have a CD-ROM capable of reading an ISO9660 standard CD-ROM

Fees: None

Technical_Prerequisites:

The data are available in the ESRI shapefile format. The user must have Environmental Systems Research Institute's (ESRI) ArcView 3.0 or greater or ArcGIS software to read and process the data file. In lieu of Arcview, the user may utilize another GIS application package capable of importing the data. A free GIS data viewer, ArcExplorer, is available from the ESRI website at www.esri.com/software/arcexplorer/download4.html

Access to the data and information contained on this CD-ROM was developed using the HyperText Markup Language (HTML) utilized by the World Wide Web (WWW) project. Development of the CD-ROM documentation and user interface in HTML allows a user to access the information by using a variety of WWW information browsers to facilitate browsing and locating information and data. To access the information contained on this disk with a WWW client browser, open the file 'index.htm' at the top level directory of this CD-ROM with your selected browser.

This CD-ROM should be readable by a variety of operating systems including Windows 95/98/NT, Macintosh and UNIX.

Available_Time_Period:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2004

Metadata_Reference_Information:

Metadata_Date: 20040219

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: U.S. Geological Survey

Contact_Person: Lawrence J. Poppe

Contact_Position: Geologist

Contact_Address:

Address_Type: mailing and physical address

Address: U.S. Geological Survey

Address: 384 Woods Hole Road

City: Woods Hole

State_or_Province: MA

Postal_Code: 02543

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