Title: Distribution of Surficial Sediments in Long Island Sound
Publication_Information:
Publication_Place: Woods Hole Field Center, Woods Hole, MA
Publisher: U.S. Geological Survey
Larger_Work_Citation:
Citation_Information:
Originator: Valerie Paskevich(ed.)
Originator: Larry Poppe(ed.)
Publication_Date: Unknown
Publication_Time: Unknown
Title:
Georeferenced Sea-Floor Mapping and Bottom Photography in Long Island Sound
Series_Information:
Series_Name: U. S. Geological Survey Open-File Report
Issue_Identification: OFR 00-304
Publication_Information:
Publication_Place: Woods Hole Field Center, Woods Hole, MA
Publisher: U. S. Geological Survey
Description:
Abstract:
This GIS layer contains an computer generated model of the distribution
of surficial sediments in Long Island Sound.
Purpose:
The purpose is to disseminate a digital version of a regional map showing
the distribution of surficial sediments in Long Island Sound. Grain size
is the most basic attribute of sediment texture, and texture controls many
benthic ecological and chemical processes.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20000721
Currentness_Reference: Publication Date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -74.0491
East_Bounding_Coordinate: -71.8185
North_Bounding_Coordinate: 41.4348
South_Bounding_Coordinate: 40.5031
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Coastal and Marine Geology Team
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: Woods Hole Field Center
Theme_Keyword: Connecticut Department of Environmental Protection
Theme_Keyword: ArcView
Theme_Keyword: arcview
Theme_Keyword: shapefile
Theme_Keyword: polygons
Theme_Keyword: surficial sediments
Theme_Keyword: grain-size analysis
Theme_Keyword: distribution of surficial sediments
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Long Island Sound
Place_Keyword: Connecticut
Place_Keyword: New York
Access_Constraints: None
Use_Constraints:
The U.S. Geological Survey must be referenced as the originator of the
dataset in any future products or research derived from these data.
Although this derived data set and its lineage dataset have been used
by the 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 notconstitute any such warranty, and no responsibility is assumed
by the USGS in the use of these data or related materials.
image showing the extent of the GIS layer and the distribution of surficial
sediments in Long Island Sound
Data_Set_Credit:
M. Moffett, A. Harmon, B. Taylor and A. Robinson, the analyst who performed
the grain-size analyses; and B. Seekins for completing the Arc processing
and creation of the GIS data layer.
Native_Data_Set_Environment:
ArcView version 3.2 shapefile format - lissound\data\chap04\listex.shp
Cross_Reference:
Citation_Information:
Originator: Larry Poppe(comp.)
Publication_Date: 20000000
Title:
Distribution of surficial sediment in Long Island Sound and adjacent waters:
texture and total organic carbon
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: Fort Lauderdale, FL
Publisher: Coastal Education and Research Foundation
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
All contacts are considered to be inferred because contacts are often gradational
and small-scale variability is below the map resolution.
Quantitative_Attribute_Accuracy_Assessment:
Attribute_Accuracy_Value: +/-10%
Attribute_Accuracy_Explanation:
Analytical and environmental error is estimated at approximately 10 percent.
Logical_Consistency_Report:
No additional checks for topological consistency were performed on this
data set.
Completeness_Report: none
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
A navigation was done by differential GPS. Typical DGPS accuracy for LIS
is about +/-10 m.
Horizontal_Positional_Accuracy_Explanation: Typical positioning
accuracy of Differential GPS
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report: Tides are less than 2 m
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: various(comp.)
Publication_Date: Unknown
Publication_Time: Unknown
Title: various high-resolution seismic cruises
Type_of_Source_Media: Van Veen grab sampler
Source_Time_Period_of_Content:
Time_Period_Information:
Multiple_Dates/Times:
Single_Date/Time:
Calendar_Date: 19920600
Single_Date/Time:
Calendar_Date: 19980300
Source_Currentness_Reference: Ground Condition
Source_Citation_Abbreviation: LISsamples
Source_Contribution:
During field work conducted in Long Island Sound during June 1992 and March
1998, a total of 1,554 samples were collected. These samples were placed
in sealed containers aboard ship and frozen for later grain-size analysis.
Process_Step:
Process_Description:
Samples for grain-size analysis were disaggregated and wet seived to separate
the coarse and fine fractions. The fine fraction was analyzed by Coulter
Counters. The coarse fraction was analyzed by sieving and a rapid sediment
analyzer. Bivalve shells and other biogenic carbonate debris were manually
removed from the gravel fraction before analysis. All textural data were
salt corrected.
Source_Used_Citation_Abbreviation: LISsamples
Process_Date: Unknown
Source_Produced_Citation_Abbreviation: LIS grain-size data
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Larry Poppe
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_Electronic_Mail_Address: lpoppe@usgs.gov
Process_Step:
Process_Description:
Grain-size analysis data points and values were plotted on paper and hand
contoured. The contour map was photographed and the resulting photograph
was scanned to create a TIF image file.
Source_Used_Citation_Abbreviation: LIS grain-size data
Process_Date: Unknown
Source_Produced_Citation_Abbreviation: listex.tif
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Larry Poppe
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_Electronic_Mail_Address: lpoppe@usgs.gov
Process_Step:
Process_Description:
The produced TIF image was brought into Arc/Info and georeferenced. The
georeferenced image was converted to an Arc/Info grid and projected to
UTM.
The grid file, listex.grd, was displayed in ArcView and the textural contours
were digitized on screen. The vectors were combined with a coastline file
to create a polygon shapefile. The resultant polygons were tagged to identify
the sediment classes.
Carried over from the ArcInfo attribute LINENU4#. LINENU4# is an ArcInfo
internal control parameter and has no applicable relevance to the use of
the data.
Attribute_Definition_Source: User Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 1996
Attribute:
Attribute_Label: Linenu4_id
Attribute_Definition:
Carried over from the ArcInfo attribute LINENU4-ID. LINENU4-ID is an ArcInfo
internal control parameter and has no applicable relevance to the use of
the data.
Attribute_Definition_Source: User Defined
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute:
Attribute_Label: Texture
Attribute_Definition:
Sediment type as defined by the classification system of Shepard (1954)
Attribute_Definition_Source: User Defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character field
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure:
Shepard's classiification system is based on percents of gravel, sand,
silt, and clay
Attribute:
Attribute_Label: Sourcethm
Attribute_Definition:
Previous version of the shape file created during development
Attribute_Definition_Source: User Defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character field
Attribute:
Attribute_Label: Hectares
Attribute_Definition: Area of the polygon in hectares
Attribute_Definition_Source: User Defined
Attribute_Domain_Values:
Unrepresentable_Domain: Character field
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: hectares
Overview_Description:
Entity_and_Attribute_Overview:
This datalayer (the texture of surficial sediments in LIS) provides information
on sedimentary environment and aggregate resource potential.
Entity_and_Attribute_Detail_Citation:
Distribution of surficial sediment in Long Island Sound and adjacent waters:
texture and total organic carbon, by Poppe and others
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U. S. Geological Survey
Contact_Person: Larry Poppe
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_Electronic_Mail_Address: lpoppe@usgs.gov
Resource_Description: Long Island Sound: listex.shp
Distribution_Liability:
Although this derived data set and its lineage dataset have been used
by the 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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCV
Format_Information_Content:
listex.dbf
listex.shp
listex.shx
listex.avl
listex.sbn
listex.sbx
File_Decompression_Technique: No compression applied
Transfer_Size: 3,441Kbytes
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 650
Recording_Density_Units: Mbytes
Recording_Format: ISO 9600
Compatibility_Information:
The user must have a system with a CD-ROM capable of reading an ISO-9660
standard CD-ROM disk. To browse the information contained on this disk,
the user must also have a current version of WWW browser available.
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCV
Format_Information_Content:
The six ArcView files (listex.dbf, listex.shp, listex.shx, listex.avl,
listex.sbn, listex.sbx) comprising the distribution of surficial sediments
in Long Island Sound.
File_Decompression_Technique: zip
Transfer_Size: 1,222Kbytes
Digital_Transfer_Option:
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 650
Recording_Density_Units: Mbytes
Recording_Format: ISO 9600
Compatibility_Information:
The user must have a system with a CD-ROM capable of reading an ISO-9660
standard CD-ROM disk. To browse the information contained on this disk,
the user must also have a current version of WWW browser available. The
user must also have the software installed on their computer system capable
to unzip the archived file.
Fees: none
Custom_Order_Process: None
Technical_Prerequisites:
The listex overlay is available in an ArcView shapefile format. The user
must have ESRI's ArcView 3.0 or greater 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.
