RES2DINV Format for Modified Continuous Resistivity Profile Data Collected in the Corsica River Estuary, Maryland on May 15 and May 16, 2007 on USGS Cruise 07005
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Metadata:
- Identification_Information:
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- Citation:
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- Citation_Information:
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- Originator: John F. Bratton
- Originator: VeeAnn A. Cross
- Publication_Date: 2011
- Title:
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RES2DINV Format for Modified Continuous Resistivity Profile Data Collected in the Corsica River Estuary, Maryland on May 15 and May 16, 2007 on USGS Cruise 07005
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2010-1094
- Publication_Information:
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- Publication_Place: Woods Hole Coastal and Marine Science Center, Woods Hole, MA
- Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
- Online_Linkage:
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<https://pubs.usgs.gov/of/2010/1094/data/resistivity/res2dinv_format/fixedbathy_res2dinv.zip>
- Online_Linkage: <https://pubs.usgs.gov/of/2010/1094/html/catalog.html>
- Larger_Work_Citation:
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- Citation_Information:
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- Originator: VeeAnn A. Cross
- Originator: John F. Bratton
- Originator: Charles R. Worley
- Originator: John Crusius
- Originator: Kevin D. Kroeger
- Publication_Date: 2011
- Title:
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Continuous resistivity profiling data from the Corsica River Estuary, Maryland
- Series_Information:
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- Series_Name: Open-File Report
- Issue_Identification: 2010-1094
- Publication_Information:
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- 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/2010/1094/>
- Description:
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- Abstract:
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Submarine groundwater discharge (SGD) into Maryland's Corsica River Estuary was investigated as part of a larger study to determine the importance of nutrient delivery to Chesapeake Bay via this pathway. Resource managers are concerned about nutrients that are entering the estuary via submarine groundwater discharge from this primarily agricultural watershed that may be contributing to eutrophication, harmful algal blooms, and fish kills. An interdisciplinary U.S. Geological Survey (USGS) science team conducted field operations in the estuary in April and May 2007. Techniques used included continuous resistivity profiling (CRP), piezometer sampling, seepage meter measurements, and collection of a radon tracer time series. Better understanding of the style, locations, and rates of groundwater discharge could lead to improved models and mitigation strategies for estuarine nutrient over-enrichment in the Corsica River Estuary, and other similar settings. More information on the field work can be accessed from the Woods Hole Coastal and Marine Science Center Field Activity webpage: <http://quashnet.er.usgs.gov/data/2007/07005/>
- Purpose:
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To provide the linearized raw continuous resistivity profile (CRP) data for the files with modified bathymetry collected on May 15 and May 17, 2007 in the Corsica River Estuary by the AGI SuperSting system in the RES2DINV format. The RES2DINV format is a common format used by researchers who work with resistivity data. 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.
- Time_Period_of_Content:
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- Time_Period_Information:
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- Range_of_Dates/Times:
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- Beginning_Date: 20070515
- Ending_Date: 20070516
- Currentness_Reference: ground condition
- Status:
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- Progress: Complete
- Maintenance_and_Update_Frequency: None planned
- Spatial_Domain:
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- Bounding_Coordinates:
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- West_Bounding_Coordinate: -76.149864
- East_Bounding_Coordinate: -76.119082
- North_Bounding_Coordinate: 39.086800
- South_Bounding_Coordinate: 39.078067
- Keywords:
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- Theme:
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- 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 Serial Number 07005
- Theme_Keyword: Field Activity Number 2007-005-FA
- Theme_Keyword: Info Bank ID T-1-07-CH
- Theme_Keyword: Continuous Resistivity Profiling
- Theme_Keyword: CRP
- Theme_Keyword: R/V Terrapin
- Theme_Keyword: Lowrance GPS
- Theme_Keyword: AGI SuperSting
- Theme_Keyword: groundwater
- Theme_Keyword: submarine groundwater
- Theme_Keyword: RES2DINV format
- Theme:
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- Theme_Keyword_Thesaurus: ISO 19115 Topic Category
- Theme_Keyword: inlandWaters
- Theme_Keyword: oceans
- Theme_Keyword: oceans and estuaries
- Theme_Keyword: oceans and coastal
- Theme_Keyword: geoscientificInformation
- Place:
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- Place_Keyword_Thesaurus: General
- Place_Keyword: North America
- Place_Keyword: North Atlantic
- Place_Keyword: United States
- Place_Keyword: Maryland
- Place_Keyword: Corsica River Estuary
- Place_Keyword: Chesapeake Bay
- Access_Constraints: None.
- Use_Constraints:
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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:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: John F. Bratton
- Contact_Organization: U.S. Geological Survey
- Contact_Address:
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- 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 x2254
- Contact_Facsimile_Telephone: (508) 457-2310
- Contact_Electronic_Mail_Address: jbratton@usgs.gov
- Contact_Instructions:
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Current address:
NOAA/GLERL
4840 S. State Rd.
Ann Arbor MI 48108-9719
734-741-2235
John.Bratton@noaa.gov
- Native_Data_Set_Environment:
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Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.2.6.1500
- Cross_Reference:
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- Citation_Information:
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- Originator: M.H. Loke
- Publication_Date: 2000
- Title:
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Electrical imaging surveys for environmental and engineering studies - a practical guide to 2D and 3D surveys
- Publication_Information:
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- Publication_Place: Penang, Malaysia
- Publisher: University Sains Malaysia
- Online_Linkage: <http://www.terrajp.co.jp/lokenote.pdf>
- Data_Quality_Information:
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- Logical_Consistency_Report: All the data files were checked and handled in the same manner.
- Completeness_Report:
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This data reprocessing represents the lines missing the majority of fathometer data from the original GPS files. These files include: L12F1, L24F1, L24F2, L25F1, L26F1, L27F1_par1, L27F1_part2, and L28F1. L12F2 and L13F1 were omitted from this list because the lines were so short (L13F1 was only 62 meters long). These files were converted to the RES2DINV format.
- Positional_Accuracy:
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- Horizontal_Positional_Accuracy:
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- Horizontal_Positional_Accuracy_Report:
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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:
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- Vertical_Positional_Accuracy_Report:
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All collected 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 Lowrance manufacturer indicates the speed of sound used by the system to convert to depths is 4800 feet/second. All values are assumed to be accurate to within 1 meter.
- Lineage:
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- Source_Information:
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- Source_Contribution:
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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. The particular system used for this acquisition was a 50-m streamer with an 11 electrode array with electrodes spaced 5 meters apart. 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. 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. There are instances where no depth or temperature information is recorded due to an equipment problem.
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:
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- Process_Description:
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The linearized STG and DEP files generated by AGI's Marine Log Manager software AGI SSAdmin MLM v 1.3.4.201 were converted to a format suitable for the RES2DINV processing software. The conversion was accomplished by a Visual Basic 6 program written at the USGS office in Woods Hole (AGI2res2d.exe - no version number). Processed lines in this dataset include L12F1, L24F1, L24F2, L25F1, L26F1, L27F1 (parts 1 and 2), and L28F1. These line names are what the * refers to in the source used and source produced citations. A more complete description of all the processing involved prior to this point can be found in the metadata for the raw resistivity data and the processed resistivity data for the "fixed bathy" files available at <https://pubs.usgs.gov/of/2010/1094/html/catalog.html>.
- Source_Used_Citation_Abbreviation: *_linfixbathy.stg
- Source_Used_Citation_Abbreviation: *_linfixbathy.dep
- Process_Date: 201004
- Source_Produced_Citation_Abbreviation: *_linfixbathy_res2d.dat
- Process_Contact:
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- Contact_Information:
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- Contact_Person_Primary:
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- Contact_Person: VeeAnn A. Cross
- Contact_Organization: U.S. Geological Survey
- Contact_Position: Marine Geologist
- Contact_Address:
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- 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
- Distribution_Information:
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- 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:
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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:
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- Digital_Form:
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- Digital_Transfer_Information:
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- Format_Name: WinZip
- Format_Version_Number: 9.0
- Format_Information_Content:
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The WinZip file contains all the RES2DINV formatted CRP data from May 15, 2007 as well as the associated metadata files.
- Transfer_Size: 0.080 MB
- Digital_Transfer_Option:
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- Online_Option:
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- Computer_Contact_Information:
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- Network_Address:
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- Network_Resource_Name: <https://pubs.usgs.gov/of/2010/1094/html/catalog.html>
- Network_Resource_Name:
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<https://pubs.usgs.gov/of/2010/1094/data/resistivity/res2dinv_format/fixedbathy_res2dinv.zip>
- Offline_Option:
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- Offline_Media: DVD-ROM
- Recording_Capacity:
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- Recording_Density: 4.75
- Recording_Density_Units: GBytes
- Recording_Format: UDF
- Fees: none
- Technical_Prerequisites:
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The data are provided in a WinZip compressed file. The user must have software capable of uncompressing the archive. In addition, these data are available in a format compatible with the RES2DINV resistivity inversion software. The user must have software capable of reading this format in order to process the data.
- Metadata_Reference_Information:
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- Metadata_Date: 20110114
- Metadata_Contact:
-
- Contact_Information:
-
- Contact_Person_Primary:
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- 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:
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- Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
- Profile_Name: ESRI Metadata Profile
Generated by mp version 2.9.6 on Fri Jan 14 15:30:52 2011