NORTHPORTALL_RESBELOWSED.SHP: Processed continuous resistivity profile (CRP) data below the sediment water interface from Northport Harbor on Long Island, New York collected from May 12 to May 14, 2008

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator: John F. Bratton
Originator: VeeAnn A. Cross
Publication_Date: 2012
Title:
NORTHPORTALL_RESBELOWSED.SHP: Processed continuous resistivity profile (CRP) data below the sediment water interface from Northport Harbor on Long Island, New York collected from May 12 to May 14, 2008
Edition: 1
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1041
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage:
<https://pubs.usgs.gov/of/2011/1041/data/resistivity/shapefile/northportall_resbelowsed.zip>
Online_Linkage: <https://pubs.usgs.gov/of/2011/1041/html/catalog.html>
Larger_Work_Citation:
Citation_Information:
Originator: V.A. Cross
Originator: J.F. Bratton
Originator: J. Crusius
Originator: C.W. Kroeger
Originator: C.W. Worley
Publication_Date: 2012
Title:
Continuous Resistivity Profiling Data from Northport Harbor and Manhasset Bay, Long Island, New York
Series_Information:
Series_Name: Open-File Report
Issue_Identification: 2011-1041
Publication_Information:
Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Other_Citation_Details: CD-ROM
Online_Linkage: <https://pubs.usgs.gov/of/2011/1041/>
Description:
Abstract:
An investigation of coastal groundwater systems was performed along the north shore of Long Island, New York during May 2008 to constrain nutrient delivery to Northport Harbor and Manhasset Bay by delineating locations of likely groundwater discharge. The embayments are bounded by steep moraines and are underlain by thick fine-grained sediments deposited in proglacial lakes during the last ice age. Beach sand and gravel overlie the glacial deposits along the coast. The continuous resistivity profiling (CRP) surveys that were conducted indicate the existence of low-salinity groundwater in shore-parallel bands, typically 25 to 50 meters wide, along the shorelines of both bays. Piezometer sampling and seepage meter deployments in intertidal and subtidal areas of the two bays confirmed the presence and discharge of brackish and low-salinity groundwater. The large tidal ranges (up to 3 meters), and the steep onshore topography and hydraulic gradients are important variables controlling coastal groundwater discharge in these areas. For more information on the survey involved in this project, see <http://quashnet.er.usgs.gov/data/2008/08007/>.
Purpose:
The purpose of this dataset is to release in shapefile format all the processed continuous resistivity profile data that occurs at the sediment water interface or below collected in Northport Harbor on Long Island, New York from May 12 - May 14, 2008. Additionally, the release of these data acts as a data archive.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 20080512
Ending_Date: 20080514
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.366910
East_Bounding_Coordinate: -73.353150
North_Bounding_Coordinate: 40.911388
South_Bounding_Coordinate: 40.888438
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: Woods Hole Coastal and Marine Science Center
Theme_Keyword: WHCMSC
Theme_Keyword: Field Activity Number 2008-007-FA
Theme_Keyword: Info Bank ID T-1-08-LI
Theme_Keyword: navigation
Theme_Keyword: bathymetry
Theme_Keyword: Continuous Resistivity Profiling
Theme_Keyword: CRP
Theme_Keyword: R/V Terrapin
Theme_Keyword: Lowrance GPS
Theme_Keyword: AGI SuperSting
Theme_Keyword: processed data
Theme_Keyword: groundwater
Theme_Keyword: submarine groundwater
Theme_Keyword: point shapefile
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: location
Theme_Keyword: oceans
Theme_Keyword: oceans and estuaries
Theme_Keyword: oceans and coastal
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: North America
Place_Keyword: North Atlantic
Place_Keyword: United States
Place_Keyword: New York
Place_Keyword: Long Island
Place_Keyword: Northport Harbor
Place_Keyword: Suffolk County
Place_Keyword: Long Island Sound
Access_Constraints: None.
Use_Constraints:
The public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
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: Woods Hole Coastal and Marine Science Center
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
Browse_Graphic:
Browse_Graphic_File_Name:
<https://pubs.usgs.gov/of/2011/1041/data/resistivity/shapefile/northportall_resbelowsed.gif>
Browse_Graphic_File_Description:
Thumbnail GIF image showing the location of the processed CRP data in Northport Harbor. The coastline with piers is included for spatial reference.
Browse_Graphic_File_Type: GIF
Native_Data_Set_Environment:
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
Data_Quality_Information:
Logical_Consistency_Report: All of the processed CRP data were handled in the same way.
Completeness_Report:
This shapefile represents all the CRP data collected at this location from the sediment water interface and deeper. In some cases the water depth was too great for the system - the sediment wasn't penetrated. Therefore no values exist in those locations.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
The navigation system used was a Lowrance 480M with an LGC-2000 Global Positioning System (GPS) antenna. The antenna was located at the anchor point for the resistivity streamer, which is also directly above the fathometer transducer mount point. The GPS system is published to be accurate to within 10 meters.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
All bathymetry values were collected by the 200 kHz Lowrance fathometer. The fathometer was mounted starboard side aft, directly below the GPS antenna and the resistivity streamer tow point. The transducer was approximately 0.30 meters below the sea surface, and this draft was not corrected for. The Lowrance manufacturer indicates the speed of sound used by the system to convert to depths is 4800 feet/second (1463 meters/second). All values are assumed to be accurate to within 1 meter.
Lineage:
Source_Information:
Source_Contribution:
The continuous resistivity profile (CRP) system used on this cruise was an AGI SuperSting marine system described at the website: www.agiusa.com/marinesystem.shtml. Two different streamers were used for data collection - not simultaneously. One streamer was a 50-m streamer with an 11 electrode array with electrodes spaced 5 meters apart. The other streamer was a 15-m streamer with an 11 electrode array with electrodes spaced 1.5 meters apart. In both cases, the source electrodes are graphite, while the receiver electrodes are stainless steel. A dipole-dipole configuration was used for the data collection in which two fixed current electrodes are assigned with the measurement of voltage potential between electrode pairs in the remaining electrodes. The maximum depth below the water surface the streamer can reach is approximately ¼ the streamer length. So for the 50-m streamer, maximum depth is about 12.5 meters, while the 15 meter streamer can reach about 3.75 meters. Each line of data acquisition records several files. The two files necessary for processing are the *.stg and the *.gps file. The STG file contains the resistivity data, while the GPS file contains the navigation information. The navigation system used in concert with the CRP system is a Lowrance LMS-480M with an LGC-2000 GPS antenna and a 200 kHz fathometer transducer. The transducer also contains a temperature sensor. Lowrance indicates the speed of sound used by the system is 4800 feet/second. Both the temperature and depth information are recorded in the logged GPS file. The CRP system images the subsurface electrical properties of an estuarine, riverine or lacustrine environment. Resistivity differences can be attributed to subsurface geology (conductive vs less conductive layers) and hydrogeologic conditions with fresh water exhibiting high resistivity and saline conditions showing low resistivity.
Process_Step:
Process_Description:
A MATLAB script (justbelowsed.m) was run on the processed CRP files to generate files with just the resistivity values that fall below the sediment water interface, and an extrapolated value at the sediment water interface. Two files from the processed resistivity data are needed for this script: the XYZ output from the EarthImager processing which has distance along line (meters), depth of resistivity reading (meters), and resistivity value (ohm-m); and the DEP file that contains distance along line (meters) and water depth values (meters). Because some lines are short and don't require a "roll-along" processing technique, the XYZ information is contained in a file with the DAT extension. The MATLAB script combines the two data files (processed resistivity and depth files) such that the output is only the resistivity values that fall at or below the sediment water interface. This script was written by the USGS (VeeAnn A. Cross) in Woods Hole, MA. In order to have a resistivity value at the sediment water interface, the software usually has to interpolate resistivity values. The version of MATLAB used for these data was MATLAB 7.5.0.342 (R2007b). An example of the script usage in MATLAB is: justbelowsed('L10F1_lin_AllInvRes.xyz','L10F1_lin_wres.dep') The output is: L10F1_lin_AllInvRes_jbsed.xyz This resulting XYZ file has 5 columns of information: distance along line (meters); depth below water surface (meters); depth below sediment/water interface (meters); resistivity value (ohm-m); log(10) resistivity value. This process step and all subsequent process steps were performed by the same person - VeeAnn A. Cross.
Source_Used_Citation_Abbreviation: *.xyz or *.dat
Source_Used_Citation_Abbreviation: *.dep
Process_Date: 200809
Source_Produced_Citation_Abbreviation: *_jbsed.xyz
Process_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: Woods Hole Coastal and Marine Science Center
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
Process_Step:
Process_Description:
Using ArcView 3.3 and the avenue script resist_jbsed_nan.ave (script written by VeeAnn Cross at the USGS in Woods Hole, MA) these XYZ files are converted to shapefiles. This script requires that the navigation for the resistivity line be a polyline shapefile and present in the view. The script prompts the user for the polyline shapefile in the view that they want to use, then prompts the user to browse for the xyz resistivity file. The script then creates a new point shapefile, with a point along the polyline at each value of X specified in the xyz file. The y and z values, as well as longitude and latitude are added to the point shapefile. This requires that the view be projected, as the distance in the xyz file is in meters. This script will work on a single line polyline shapefile (ie the nav for a survey line is alone in a shapefile) or on a selected line within a polyline shapefile. The result is a point shapefile with 11 columns of information. The Id attribute is automatically generated upon creation of a shapefile, the line attribute is the line name as indicated within the polyline shapefile that the program prompts the user for, dist is the distance along attribute carried over from the MATLAB file, the attributes of location information (latitude, longitude, utmx, utmy) are calculated by the tool, the attributes depth, dep_b_sed, resvalue, and reslogval are carried over from the MATLAB file. The Entity and Attribute section further describes these attributes and their units. This particular script had to handle NaN values generated by MATLAB where the CRP data only contained information in the water column because the water was too deep for the resistivity streamer to penetrate the sediment water interface. ***A problem detected much later with L36F2 on day 3 required the jbsed shapefile for that line to be recalculated. This calculation was performed in ArcMap 9.2 using VAC Extras (an ArcMap extension written by the USGS in Woods Hole). Using VAC Extras, version 2.1 - VAC Extras - Resistivity - convert resistivity to shapefile. This program performs the exact same function as the ArcView 3.3 avenue script. The one exception is the attributes are in a slightly different order. The fix to L36F2 occurred in February, 2011.
Source_Used_Citation_Abbreviation: *_jbsed.xyz
Source_Used_Citation_Abbreviation: the polyline shapefiles for individual days of data collection
Process_Date: 200809
Source_Produced_Citation_Abbreviation: all the point shapefiles for each individual line.
Process_Step:
Process_Description:
Then using the geoprocessing extension that comes with ArcView 3.3, the individual point shapefiles for each line of collection were merged into a single point shapefile for each day of collection. ***Because of a problem discovered with L36F2, the day3 resbelowsed shapefiles had to be remerged. Day 3 was merged using ArcMap 9.2 - ArcToolbox - Data Management Tools - General - Merge. Even though L36F2 has attributes in a slightly different order, all the same attributes are present, so the attribute mapping was left to the default. This merge occurred Feb. 2011.
Source_Used_Citation_Abbreviation: individual point shapefiles for each line of collection
Process_Date: 200809
Source_Produced_Citation_Abbreviation: day1all_resbelowsed.shp
Source_Produced_Citation_Abbreviation: day2all_resbelowsed.shp
Source_Produced_Citation_Abbreviation: day3all_resbelowsed.shp
Process_Step:
Process_Description:
Using ArcMap 9.2 - ArcToolbox - Data Management Tools - Projections and Transformations - Define Projection define the projection of the point shapefiles from day1 and day2 as Geographic, WGS84. Because of the reprocessing of day 3 in 2011, that shapefile did not need to have the projection defined.
Source_Used_Citation_Abbreviation: day1all_resbelowsed.shp
Source_Used_Citation_Abbreviation: day2all_resbelowsed.shp
Process_Date: 200809
Source_Produced_Citation_Abbreviation: day1all_resbelowsed.shp
Source_Produced_Citation_Abbreviation: day2all_resbelowsed.shp
Process_Step:
Process_Description:
Combine the individual days of the resbelowsed files into a single shapefile. Within ArcMap 9.2, using ArcToolbox - Data Management Tools - General - Merge input files: day1all_resbelowsed, day2all_resbelowsed, day3all_resbelowsed; output: northportall_resbelowsed.shp. Left field mapping at the defaults.
Source_Used_Citation_Abbreviation: day1all_resbelowsed.shp
Source_Used_Citation_Abbreviation: day2all_resbelowsed.shp
Source_Used_Citation_Abbreviation: day3all_resbelowsed.shp
Process_Date: 201102
Source_Produced_Citation_Abbreviation: northportall_resbelowsed.shp
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 272645
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:
Depth_Datum_Name: Local surface
Depth_Resolution: 0.1
Depth_Distance_Units: meters
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: northportall_resbelowsed
Entity_Type_Definition: ESRI point shapefile
Entity_Type_Definition_Source: ESRI
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: An automatically generated numeric value.
Attribute_Definition_Source: Avenue script.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0
Range_Domain_Maximum: 0
Attribute:
Attribute_Label: DIST
Attribute_Definition:
Distance along the line in meters. Originally calculated by the AGI processing software.
Attribute_Definition_Source: Software calculated.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.1
Range_Domain_Maximum: 2507.3
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: LONGITUDE
Attribute_Definition: Longitude position of the point (decimal degrees, WGS84)
Attribute_Definition_Source:
U.S. Geological Survey - calculated by the avenue script used to process the data.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -73.36691
Range_Domain_Maximum: -73.35315
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: LATITUDE
Attribute_Definition: Latitude position of the point (decimal degrees, WGS84)
Attribute_Definition_Source:
U.S. Geological Survey - calculated by the avenue script used to process the data.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 40.888438
Range_Domain_Maximum: 40.911388
Attribute_Units_of_Measure: decimal degrees
Attribute:
Attribute_Label: UTMX
Attribute_Definition: Easting position of the point in meters (UTM, Zone 18, WGS84)
Attribute_Definition_Source:
U.S. Geological Survey - calculated by the avenue script used to process the data.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 637540.2
Range_Domain_Maximum: 638720.3
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: UTMY
Attribute_Definition: Northing position of the point in meters (UTM, Zone 18, WGS84)
Attribute_Definition_Source:
U.S. Geological Survey - calculated by the avenue script used to process the data.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 4527663.3
Range_Domain_Maximum: 4530216.3
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: DEPTH
Attribute_Definition:
Depth (meters) of the resistivity value below the water surface (not tide corrected - local surface).
Attribute_Definition_Source: Acquisition/processing software derived.
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -12.32
Range_Domain_Maximum: -0.3
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: DEP_B_SED
Attribute_Definition: Depth (meters) of the value below the sediment/water interface.
Attribute_Definition_Source: Processing software derived (MATLAB - justbelowsed.m).
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -12.02
Range_Domain_Maximum: 0
Attribute_Units_of_Measure: meters
Attribute:
Attribute_Label: RESVALUE
Attribute_Definition: Resistivity value of the data point in ohm-m.
Attribute_Definition_Source: Processing software calculated (AGI EarthImager).
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: 0.100366
Range_Domain_Maximum: 506.016
Attribute_Units_of_Measure: ohm-m
Attribute:
Attribute_Label: RESLOGVAL
Attribute_Definition: Log(10) of the resistivity value.
Attribute_Definition_Source: Processing software calculated (MATLAB justbelowsed.m).
Attribute_Domain_Values:
Range_Domain:
Range_Domain_Minimum: -0.998413
Range_Domain_Maximum: 2.704164
Attribute_Units_of_Measure: Log(10) of ohm-m
Attribute:
Attribute_Label: LINE
Attribute_Definition:
The alphanumeric name corresponding to the individual line of data collection that the point comes from.
Attribute_Definition_Source: U.S. Geological Survey
Attribute_Domain_Values:
Unrepresentable_Domain: Character set.
Distribution_Information:
Distributor:
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: Woods Hole Coastal and Marine Science Center
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
Resource_Description: Downloadable Data
Distribution_Liability:
Neither the U.S. government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. 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: WinZip
Format_Version_Number: 9.0
Format_Information_Content:
This WinZip file contains the point shapefile as well as the associated metadata files.
Transfer_Size: 6.7 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://pubs.usgs.gov/of/2011/1041/data/resistivity/shapefile/northportall_resbelowsed.zip>
Network_Resource_Name: <https://pubs.usgs.gov/of/2011/1041/html/catalog.html>
Offline_Option:
Offline_Media: CD-ROM
Recording_Capacity:
Recording_Density: 640
Recording_Density_Units: MB
Recording_Format: ISO9660
Fees: None.
Technical_Prerequisites:
This WinZip file contains data available in ESRI point shapefile format. The user must have software capable of uncompressing the WinZip file and reading/displaying the shapefile.
Metadata_Reference_Information:
Metadata_Date: 20120112
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: Woods Hole Coastal and Marine Science Center
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 2.9.6 on Thu Jan 12 17:16:46 2012