Metadata: Identification_Information: Citation: Citation_Information: Originator: John F. Bratton Originator: VeeAnn A. Cross Publication_Date: 2005 Title: Processed Continuous Resistivity Profile Collected in the Neuse River, April 19, 2004 Series_Information: Series_Name: Open-File Report Issue_Identification: 2005-1306 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://doi.org/10.3133/ofr20051306 Online_Linkage: http://pubs.usgs.gov/of/2005/1306/data/2004/proc_resis/apr19_proc.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: Reston, VA Publisher: U.S. Geological Survey 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: To provide resistivity data as collected by the AGI SuperSting system and processed with EarthImager software. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20040419 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -76.729717 East_Bounding_Coordinate: -76.713317 North_Bounding_Coordinate: 34.972333 South_Bounding_Coordinate: 34.966467 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Metadata Identifier Theme_Keyword: USGS:79c17bb6-9067-4890-a11f-89154f443c93 Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: CMGP Theme_Keyword: coastal Theme_Keyword: Coastal and Marine Geology Program Theme_Keyword: Continuous Resistivity Profiling Theme_Keyword: CRP Theme_Keyword: ground-water Theme_Keyword: marine resistivity Theme_Keyword: submarine ground-water Theme_Keyword: U.S. Geological Survey Theme_Keyword: USGS Theme_Keyword: Woods Hole Science Center Theme_Keyword: Open-File Report Theme_Keyword: OF 2005-1306 Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: continuous resistivity profiling Theme_Keyword: image collections Place: Place_Keyword_Thesaurus: None 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: 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 Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.0.0.535 Data_Quality_Information: Logical_Consistency_Report: Information unavailable from original metadata. Completeness_Report: Information unavailable from original metadata. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey Publication_Date: Unpublished material Title: Raw CRP Data Type_of_Source_Media: hard disk Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20040419 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: raw crp data 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 data were transferred from the logging computer via AGISSAdmin software. The data file available for this day is N2.*. Process_Date: Unknown Process_Step: Process_Description: A section of the STG file was removed due to bad time stamps (between records 1913 and 1920). $GPRMC lines within the GPS file that had bad time stamps or were otherwise corrupt were also deleted. Source_Used_Citation_Abbreviation: N2.stg and N2.gps Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2_mod.stg and N2_mod.gps 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: 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: The data were merged with navigation and linearized using AGI's Marine Log Manager software. Process_Date: Unknown Process_Step: Process_Description: The file was then exported to a new STG file, and accompanying DEP file. The DEP file contains the distance along line and bathymetry values. Source_Used_Citation_Abbreviation: N2_mod.stg Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2proc.stg, N2proc.dep Process_Step: Process_Description: The DEP file was checked for anomalous bathymetry values and those lines in the file were deleted. Source_Used_Citation_Abbreviation: N2proc.dep Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2proc_mod.dep Process_Step: Process_Description: EarthImager software does not require that a default resistivity value for the water column be supplied in the DEP file. If one is not supplied, then it calculates a value based on the first electrode pair. For this reason, the data were processed without a value supplied (in the folder def_wres), and with a value supplied (in the folder wres). The average water resistivity value was calculated based on YSI temperature and conductivity data readings during the survey. Source_Used_Citation_Abbreviation: N2proc_mod.dep Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2proc_wres.dep Process_Step: Process_Description: EarthImager version 1.9.0 was used to process the data files. The *.ini file accompanying the results contains the parameters used during the processing. These parameters include: minimum voltage: 0.02 minimum abs(V/I): 2E-5 max repeat error: 3% min apparent res: 0.03 max apparent res: 1000 max reciprocal error: 5% remove spikes smooth model inversion finite difference method Cholesky decomposition Dirichlet boundary condition thickness incremental factor: 1.1 depth factor: 1.1 number of iterations: 8 stop criteria: max RMS 3%, error reduction 5%, L2Norm CRP processing using a 65% overlap Process_Date: Unknown Process_Step: Process_Description: The results of the processing are a JPEG image of the resistivity profile, and an XYZ file containing the distance along, depth, apparent resistivity (ohm-m). The first pass at processing (Trial1) used the default water resistivity value, while the second pass (Trial2) used the average water resistivity value in the DEP file. The JPEG file produced uses a color scale that is based on the data from this particular file. **Caution: The XYZ output filename does not contain the trial number, so the processing technique is a function of the folder it resides in. Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2proc_AllInvRes.xyz, N2proc_trial1_InvResShort.jpg, N2proc_trial2_InvResShort.jpg Process_Step: Process_Description: The XYZ output file was then loaded into Matlab, along with the depth information, to create a new JPEG image with the same color scale for all the data files. In this manner, the JPEG images can be compared directly. Care was taken to try to get the vertical and horizontal scales uniform as well, although this was not always possible due to Matlab limitations. These images reside in the Matlab images folder. Part of the filename (defwres vs. wres), as well as information within the image indicates if the default water resistivity (defwres) data file was used or an average water resistivity (wres) value. Source_Used_Citation_Abbreviation: N2proc_AllInvRes.xyz Process_Date: Unknown Source_Produced_Citation_Abbreviation: N2proc_defwres.jpg, N2proc_wres.jpg Process_Step: Process_Description: Edits to the metadata were made to fix any errors that MP v 2.9.34 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). The source information was incomplete and had to be modified to meet the standard. None of the process steps had process dates, so those were set to unknown. The distributor information needed to be added, along with the distribution format and network resource. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. Process_Date: 20161028 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road City: Woods Hole State_or_Province: MA Postal_Code: 02543 Contact_Voice_Telephone: 508-548-8700 x2251 Contact_Facsimile_Telephone: 508-457-2310 Contact_Electronic_Mail_Address: vatnipp@usgs.gov Process_Step: Process_Description: USGS Thesaurus keywords added to the keyword section. Process_Date: 20180720 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road 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: Crossref DOI link was added as the first link in the metadata. Process_Date: 20191118 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road 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: Added keywords section with USGS persistent identifier as theme keyword. Process_Date: 20200908 Process_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical Address: 384 Woods Hole Road 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 Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Person: VeeAnn A. Cross Contact_Position: Marine Geologist Contact_Address: Address_Type: Mailing and Physical 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: 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: Format_Name: TEXT Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2005/1306/data/2004/proc_resis/apr19_proc.zip Digital_Form: Digital_Transfer_Information: Format_Name: JPEG Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/of/2005/1306/data/2004/proc_resis/apr19_proc.zip Fees: None Metadata_Reference_Information: Metadata_Date: 20240318 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: whsc_data_contact@usgs.gov Contact_Instructions: The metadata contact email address is a generic address in the event the person is no longer with USGS. (updated on 20240318) Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Time_Convention: local time