Continuous Resistivity Profile Tracklines of Data Collected in 2004 in the Neuse River, North Carolina

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: John F. Bratton
Originator: VeeAnn A. Cross
Publication_Date: 2005
Title:
Continuous Resistivity Profile Tracklines of Data Collected in 2004 in the Neuse River, North Carolina
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage:
<http://pubs.usgs.gov/of/2005/1306/data/navigation/restracklines_04.zip>
Larger_Work_Citation:
Citation_Information:
Originator: VeeAnn A. Cross
Originator: John F. Bratton
Originator: Emile Bergeron
Originator: Jeff K. Meunier
Originator: John Crusius
Originator: Dirk Koopmans
Publication_Date: 2005
Title:
Continuous Resistivity Profiling Data from the Upper Neuse River Estuary, North Carolina, 2004-2005
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2005-1306
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/2005/1306>
Description:
Abstract:
The Neuse River Estuary in North Carolina is a broad, V-shaped water body located on the southwestern end of Pamlico Sound. This estuary suffers from severe eutrophication for which several water quality models have recently been developed to aid in the management of nutrient loading to the estuary. In an effort to help constrain model estimates of the fraction of nutrients delivered by direct ground-water discharge, continuous resistivity profile (CRP) measurements were made during the spring of 2004 and 2005. CRP is used to measure electrical resistivity of sediments, a property that is sensitive to difference in salinity of submarine ground water. The 2004 and 2005 surveys used floating resistivity streamers of 100 m and 50 m respectively. The depth penetration of the streamers is approximately 20% of the streamer length which translates to approximately 20-25 m with the 100 m streamer and 12-14 m with the 50 m streamer. These data were processed using AGI's EarthImager 2D software. CRP data enables the mapping of the extent and depth of the fresher ground water within the estuary.
Purpose:
This shapefile is provided to show the tracklines were continuous resistivity profile data were collected.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20040419
Ending_Date: 20040423
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.984117
East_Bounding_Coordinate: -76.713317
North_Bounding_Coordinate: 35.055067
South_Bounding_Coordinate: 34.938517
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: CMGP
Theme_Keyword: Coastal and Marine Geology Program
Theme_Keyword: Continuous Resistivity Profiling
Theme_Keyword: CRP
Theme_Keyword: marine resistivity
Theme_Keyword: navigation
Theme_Keyword: OF 2005-1306
Theme_Keyword: Open-File Report
Theme_Keyword: polyline
Theme_Keyword: shapefile
Theme_Keyword: U.S. Geological Survey
Theme_Keyword: USGS
Theme_Keyword: Woods Hole Science Center
Theme_Keyword: trackline
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: Neuse River
Place_Keyword: North America
Place_Keyword: North Carolina
Place_Keyword: Pamlico Sound
Place_Keyword: United States
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.
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine 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
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@usgs.gov
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535
Data_Quality_Information:
Lineage:
Source_Information:
Source_Contribution:
These data were acquired with an AGI SuperSting Marine system that is described at the website: www.agiusa.com/marinesystem.shtml. The particular system used for this acquisition was an 11 stainless steel electrode array with electrodes spaced 10 meters apart. A dipole-dipole configuration was used for the data collection in which two fixed current electrodes are assigned with the measurement of voltage potentials between electrode pairs in the remaining electrodes. Each line of data acquisition records several files. The two files necessary for processing are the *.stg and *.gps file. The STG file contains the resistivity data, while the GPS file contains the navigation information.
Process_Step:
Process_Description:
The GPS files were processed using an AWK script to parse out the navigational information from the $GPRMC string and concatenated into a single file.
Source_Used_Citation_Abbreviation: *.gps
Source_Produced_Citation_Abbreviation: allgps.txt
Process_Step:
Process_Description:
This comma delimited text file was then imported as a table into ArcView 3.3.
Source_Used_Citation_Abbreviation: allgps.txt
Process_Step:
Process_Description: The table was then added as an event theme into ArcView.
Process_Step:
Process_Description:
An avenue script (pnts2lines.ave) was run that converted the event theme to a polyline shapefile. The unique attribute "Linename" was used to generate a separate record for each individual acquisition line.
Source_Produced_Citation_Abbreviation: allgps_lns.shp
Process_Step:
Process_Description:
Lines for which there was no valid resistivity data were deleted.
Process_Step:
Process_Description:
The shapefile was loaded into ArcMap v9.0 and resistivity lines that were split for processing purposes were split with the editor based on distance along line. This was done so that a direct correlation between processed line JPEG image and navigation position could be determined.
Source_Used_Citation_Abbreviation: allgps_lns.shp
Source_Produced_Citation_Abbreviation: restracklines_04.shp
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 23
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: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: restracklines_04
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:
Attribute_Label: LINENAME
Attribute_Definition: Prefix of the filename used during data acquisition.
Attribute_Definition_Source: Technician.
Attribute_Domain_Values:
Unrepresentable_Domain: character set
Attribute:
Attribute_Label: GPSTIME
Attribute_Definition: GPS time for the start of the trackline.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Range_Domain:
Attribute_Units_of_Measure: Time in hr:min:sec
Attribute:
Attribute_Label: DATESTR
Attribute_Definition:
A numeric string representing the date the data was acquired as recorded by the GPS.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: numeric set representing the data in the form ddmmyr
Attribute:
Attribute_Label: LENGTH
Attribute_Definition:
Length in meters of the complete trackline based on UTM, Zone18, NAD83 projection.
Attribute_Definition_Source: Computer calculated.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 666.349
Range_Domain_Maximum: 43483.078
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: SPLITPART
Attribute_Definition:
Prefix filename assigned to the datafile if the STG file was split. This value is the same as Linename if no split occurred.
Attribute_Definition_Source: Data processor.
Attribute_Domain_Values:
Unrepresentable_Domain: character set
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: John F. Bratton
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 x2254
Contact_Facsimile_Telephone: (508) 457-2310
Resource_Description: Downloadable Data
Distribution_Liability:
These data were prepared by an agency of the United States Government. Neither the United States government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.135
Metadata_Reference_Information:
Metadata_Date: 20050901
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn A. Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine 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
Contact_Voice_Telephone: (508) 548-8700 x2251
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: vatnipp@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_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.8.6 on Tue Sep 13 12:40:19 2005