surveylines_sss: Survey lines of the sidescan sonar system
image of GIS layer

Data format: Shapefile

File or table name: surveylines_sss

Coordinate system: Universal Transverse Mercator

Theme keywords: U.S. Geological Survey, USGS, Coastal and Marine Geology Program, CMGP, Woods Hole Science Center, WHSC, Massachusetts Office of Coastal Zone Management, CZM, Seafloor, Marine Geology, ArcGIS Raster, Sidescan, Sidescan Sonar, Edgetech, 272-T, Klein, 5500, National Oceanic and Atmospheric Administration, NOAA, National Ocean Service, NOS, NOAA Ship Whiting, Hydrographic Survey, tracklines, survey lines, oceans and estuaries, transportation
Abstract: These data are the trackline from the high-resolution acoustic backscatter measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar data were collected by the National Oceanic and Atmospheric Administration (NOAA) Ship Whiting in 2000 and 2001 and reprocessed by the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS).

FGDC and ESRI Metadata:
Metadata elements shown with blue text are defined in the Federal Geographic Data Committee's (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM). Elements shown with green text are defined in the ESRI Profile of the CSDGM. Elements shown with a green asterisk (*) will be automatically updated by ArcCatalog. ArcCatalog adds hints indicating which FGDC elements are mandatory; these are shown with gray text.
Identification Information:


Citation:
Citation information:
Originators: Seth Ackerman


Title:
surveylines_sss: Survey lines of the sidescan sonar system
*File or table name: surveylines_sss


Publication date: 2006
*Geospatial data presentation form: vector digital data


Series information:
Series name: Open-File Report
Issue identification: 2006-1008

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/2006/1008/gis/datazipped/surveylines_sss.zip


Larger work citation:
Citation information:
Originators: Ackerman, S.D., Butman, B., Barnhardt, W.B., Danforth, W.W., Crocker, J.M.


Title:
High-Resolution Geologic Mapping of the Inner Continental Shelf: Boston Harbor and Approaches, Massachusetts


Publication date: 2006


Series information:
Series name: Open-File Report
Issue identification: 2006-1008

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/2006/1008


Description:
Abstract:
These data are the trackline from the high-resolution acoustic backscatter measurements of the seafloor from Boston Harbor and the harbor approaches, Massachusetts. Approximately 170 km² of sidescan sonar data were collected by the National Oceanic and Atmospheric Administration (NOAA) Ship Whiting in 2000 and 2001 and reprocessed by the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS).

Purpose:
These data were collected by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS) branch as part of their periodic hydrographic mapping for nautical charting.  The raw datasets were provided by NOAA to the Massachusetts Office of Coastal Zone Management (CZM) and the U.S. Geological Survey (USGS) in Woods Hole, MA as part of a cooperative agreement to provide high resolution bathymetry and backscatter intensity maps and digital GIS information for resource management, scientific research, industry and the public.

*Language of dataset: en


Time period of content:
Time period information:
Range of dates/times:
Beginning date: 20000919
Ending date: 20011030

Currentness reference:
ground condition

Status:
Progress: Complete
Maintenance and update frequency: None planned

Spatial domain:
Bounding coordinates:
*West bounding coordinate: -71.055531
*East bounding coordinate: -70.817827
*North bounding coordinate: 42.437088
*South bounding coordinate: 42.253291

Local bounding coordinates:
*Left bounding coordinate: 330921.879999
*Right bounding coordinate: 350057.230001
*Top bounding coordinate: 4699917.389993
*Bottom bounding coordinate: 4679933.510007

Keywords:
Theme:
Theme keywords: U.S. Geological Survey, USGS, Coastal and Marine Geology Program, CMGP, Woods Hole Science Center, WHSC, Massachusetts Office of Coastal Zone Management, CZM, Seafloor, Marine Geology, ArcGIS Raster, Sidescan, Sidescan Sonar, Edgetech, 272-T, Klein, 5500, National Oceanic and Atmospheric Administration, NOAA, National Ocean Service, NOS, NOAA Ship Whiting, Hydrographic Survey, tracklines, survey lines
Theme keyword thesaurus: General

Theme:
Theme keywords: oceans and estuaries, transportation
Theme keyword thesaurus: ISO 19115 Topic Category

Place:
Place keywords: Massachusetts Bay, Atlantic Ocean, Boston Harbor, Nahant, Boston, Hull, Hubline, Boston Harbor Islands
Place keyword thesaurus: General

Stratum:
Stratum keywords: Seafloor
Stratum keyword thesaurus: General

Access constraints: None
Use constraints:
Data are not intended for navigational use. These data should not be used at resolutions for which it is not intended. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.

Point of contact:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


*Native dataset format: Shapefile
*Native data set environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722


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Data Quality Information:


Logical consistency report:
No additional checks for topological consistency were performed on this data.

Positional accuracy:
Horizontal positional accuracy:
Horizontal positional accuracy report:
All of the NOAA survey vessels were equipped with Trimble DSM212L Differential Global Positioning System (DGPS) receivers.  Launch 1005, which collected all of the multibeam bathymetry, was also equipped with a TSS POS/MV Model 320 (Position and Orientation System for Marine Vessels).  Standard bathymetric processing, including tide corrections, soundings accuracy, and quality control were done by the NOAA Office of Coast Survey.

Lineage:
Source information:
Source contribution:
The original geophysical data for this project were collected during four hydrographic surveys conducted by NOAA NOS in 2000 and 2001 on the NOAA Ship Whiting and its launches 1005/1014.  Multibeam bathymetric data were acquired with a Reson SeaBat 8101 and sidescan sonar backscatter data were acquired with Edgetech model 272-T (100 kHz) or the Klein T-5500 (455 kHz) sonar systems.

Source time period of content:
Time period information:
Range of dates/times:
Beginning date: 20000919
Ending date: 20011030

Source currentness reference:
ground condition

Process step:
Process description:
Sidescan data were acquired by NOAA NOS with the Edgetech model 272-T (100 kHz) or the Klein T-5500 (455 kHz) sidescan sonar systems. Equipment was either hull mounted or towed. Range, layback, gain and other acquisition parameters varied and were adjusted accordingly in the acquisition software.  Raw .xtf sonar files were transfered from NOAA NOS to the USGS/CZM.

Process step:
Process description:
The raw sidescan-sonar data were processed using XSonar/ShowImage software. The processing steps included demultiplexing the raw sidescan data using a median filtering routine to suppress speckle noise, a file check of navigation points to delete repeated fixes or other logging errors, correct for slant-range distortion, signal attenuation, and dropped sonar lines (Danforth, W.W., 1997, Xsonar/ShowImage: A complete system for rapid sidescan-sonar processing and display: U.S. Geological Survey Open File Report 97-686, 77 p.).

Process contact:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
c/o U.S. Geological Survey
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


Process step:
Process description:
The navigation fixes were batch converted to a single text file of equal interval points along each survey line using the Linux shell script "convertXsonarNav" (which parses all of the .nav files created during Xsonar processing, reporjects the data to UTM zone 19 outputs easting, northing, julian date, linename to a new file.

Process contact:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
c/o U.S. Geological Survey
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


Process step:
Process description:
The ESRI shapefile is created using the avenue script "navpts2lines" which creates multiple lines from a single point shapefile (the file created in the previous process step) where an attribute field in the point shapefile delineates the line name.

Process contact:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
c/o U.S. Geological Survey
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


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Spatial Data Organization Information:


*Direct spatial reference method: Vector


Point and vector object information:
SDTS terms description:
*Name: surveylines_sss
*SDTS point and vector object type: String
*Point and vector object count: 1678

ESRI terms description:
*Name: surveylines_sss
*ESRI feature type: Simple
*ESRI feature geometry: Polyline
*ESRI topology: FALSE
*ESRI feature count: 1678
*Spatial index: FALSE
*Linear referencing: FALSE


Raster object information:
*Image format: TIFF
*Number of bands: 1


*Row count: 20000
*Column count: 21000
*Vertical count: 1


*Cell size X direction: 1.000000
*Cell size Y direction: 1.000000


*Bits per pixel: 8
*Pyramid layers: TRUE
*Image colormap: FALSE
*Compression type: None


*Raster object type: Pixel
*Raster display type: pixel codes
*Raster origin: Upper Left


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Spatial Reference Information:


Horizontal coordinate system definition:
Coordinate system name:
*Projected coordinate system name: WGS_1984_UTM_Zone_19N
*Geographic coordinate system name: GCS_WGS_1984

Planar:
Grid coordinate system:
*Grid coordinate system name: Universal Transverse Mercator
Universal Transverse Mercator:
*UTM zone number: 19
Transverse mercator:
*Scale factor at central meridian: 0.999600
*Longitude of central meridian: -69.000000
*Latitude of projection origin: 0.000000
*False easting: 500000.000000
*False northing: 0.000000

Planar coordinate information:
*Planar coordinate encoding method: coordinate pair
Coordinate representation:
*Abscissa resolution: 0.000032
*Ordinate resolution: 0.000032
*Planar distance units: meters

Geodetic model:
*Horizontal datum name: D_WGS_1984
*Ellipsoid name: WGS_1984
*Semi-major axis: 6378137.000000
*Denominator of flattening ratio: 298.257224

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Entity and Attribute Information:


Detailed description:
*Name: surveylines_sss


Entity type:
*Entity type label: surveylines_sss
*Entity type type: Feature Class
*Entity type count: 1678

Attribute:
*Attribute label: FID
*Attribute alias: FID
*Attribute definition:
Internal feature number.
*Attribute definition source:
ESRI

*Attribute type: OID
*Attribute width: 4
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Sequential unique whole numbers that are automatically generated.


Attribute:
*Attribute label: Shape
*Attribute alias: Shape
*Attribute definition:
Feature geometry.
*Attribute definition source:
ESRI

*Attribute type: Geometry
*Attribute width: 0
*Attribute precision: 0
*Attribute scale: 0


Attribute domain values:
*Unrepresentable domain:
Coordinates defining the features.


Attribute:
*Attribute label: ID
*Attribute alias: ID
Attribute definition:
sequential id number within each survey

*Attribute type: Float
*Attribute width: 19
*Attribute number of decimals: 11


Attribute:
*Attribute label: LINENAME
*Attribute alias: LINENAME
Attribute definition:
Line name (julian date_NOAA line name.nav)

*Attribute type: String
*Attribute width: 16


Attribute:
*Attribute label: JD
*Attribute alias: JD
Attribute definition:
Julian date of line acquisition

*Attribute type: Number
*Attribute width: 4


Attribute:
*Attribute label: SURVEYID
*Attribute alias: SURVEYID
Attribute definition:
survey id

*Attribute type: String
*Attribute width: 21


Attribute domain values:
Enumerated domain:
Enumerated domain value: H90_100_1014
Enumerated domain value definition:
Survey H10990 - Klein 5500 hull mounted sidescan sonar

Enumerated domain:
Enumerated domain value: H90_200
Enumerated domain value definition:
Survey H10990 - Klein 5500 hull mounted sidescan sonar

Enumerated domain:
Enumerated domain value: H91_all
Enumerated domain value definition:
Survey H10991 - Edgetech 272-T towed sidescan sonar

Enumerated domain:
Enumerated domain value: H92_100_1014
Enumerated domain value definition:
Survey H10992 - Edgetech 272-T towed sidescan sonar

Enumerated domain:
Enumerated domain value: H92_100_s329
Enumerated domain value definition:
Survey H10992 - Klein 5500 towed sidescan sonar

Enumerated domain:
Enumerated domain value: H92_200_1014_edgetech
Enumerated domain value definition:
Survey H10992 - Edgetech 272-T towed sidescan sonar

Enumerated domain:
Enumerated domain value: H92_200_1014_klein
Enumerated domain value definition:
Survey H10992 - Klein 5500 towed sidescan sonar

Enumerated domain:
Enumerated domain value: H94_200_s329
Enumerated domain value definition:
Survey H10994 - Klein 5500 hull mounted sidescan sonar

Enumerated domain:
Enumerated domain value: H94_2930
Enumerated domain value definition:
Survey H10994 - Klein 5500 towed sidescan sonar

Enumerated domain:
Enumerated domain value: H94_2931
Enumerated domain value definition:
Survey H10994 - Edgetech 272-T towed sidescan sonar

Enumerated domain:
Enumerated domain value: H94_2392
Enumerated domain value definition:
Survey H10994 - Klein 5500 hull mounted sidescan sonar

Attribute:
*Attribute label: Shape_Leng
*Attribute alias: Shape_Leng
Attribute definition:
survey line length in meters

*Attribute type: Float
*Attribute width: 19
*Attribute number of decimals: 11


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Distribution Information:


Distributor:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
c/o U.S. Geological Survey
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


Resource description: Downloadable Data


Distribution liability:
Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS 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 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: Shapefile
Format version number: ArcGIS 9.x
Format specification:
ESRI Polyline Shapefile
File decompression technique: no compression applied
*Transfer size: 0.836
*Dataset size: 0.836

Digital transfer option:
Online option:
Computer contact information:
Network address:
Network resource name: <http://pubs.usgs.gov/of/2006/1008/gis/datazipped/bh_1mbs.zip>
Network resource name: <http://pubs.usgs.gov/of/2006/1008/html/appendix1.html>
Network resource name: <http://pubs.usgs.gov/of/2006/1008/gis/OFR_2006_1008/images/backscatter/>

Offline option:
Offline media: DVD-ROM
Recording format: UDF

Fees: None


Technical prerequisites:
These data are available in Environmental Systems Research Institute (ESRI) Shapefile format. The user must have software capable of importing and processing the data file.


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Metadata Reference Information:


*Metadata date: 20060807


*Language of metadata: en


Metadata contact:
Contact information:
Contact person primary:
Contact person: Seth Ackerman
Contact organization: Massachusetts Office of Coastal Zone Management
Contact position: Geologist


Contact address:
Address type: mailing and physical address
Address:
c/o U.S. Geological Survey
Address:
384 Woods Hole Rd.
City: Woods Hole
State or province: MA
Postal code: 02543-1598
Country: USA

Contact voice telephone: 508-548-8700 x2315
Contact facsimile telephone: 508-457-2310


Contact electronic mail address: seth.ackerman@state.ma.us


*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

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Binary Enclosures:


Thumbnail:
Enclosure type: Picture



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