Excel Spreadsheet of the Geoprobe Results from the Nauset Marsh Area Collected August, 2005

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Frequently-anticipated questions:

What does this data set describe?

Title:
Excel Spreadsheet of the Geoprobe Results from the Nauset Marsh Area Collected August, 2005
Abstract:
In order to test hypotheses about groundwater flow under and into estuaries and the Atlantic Ocean, geophysical surveys, geophysical probing, submarine groundwater sampling, and sediment coring were conducted by U.S. Geological Survey (USGS) scientists at Cape Cod National Seashore (CCNS) from 2004 through 2006. Coastal resource managers at CCNS and elsewhere are concerned about nutrients that are entering coastal waters via submarine groundwater discharge, which are contributing to eutrophication and harmful algal blooms. The research carried out as part of the study described here was designed, in part, to help refine assumptions required by earlier versions of models about the nature of submarine groundwater flow and discharge at CCNS. This study was conducted in four phases, with a variety of field techniques and equipment employed in each phase. Phase 1 consisted of continuous resistivity profiling (CRP) surveys of the entire study area conducted in 2004. Phase 2 consisted of CRP ground-truthing via resistivity probe measurements and submarine groundwater sampling from hydraulically-drive piezometers using a barge in the Salt Pond/Nauset Marsh area in 2005. Phase 3 consisted of supplemental detailed CRP surveys in the Salt Pond/Nauset Marsh area in 2006. Finally, Phase 4 consisted of sediment coring and porewater extraction in the Salt Pond/Nauset Marsh area later in 2006 to supplement the 2005 sampling.
  1. How should this data set be cited?

    Bratton, John, 2008, Excel Spreadsheet of the Geoprobe Results from the Nauset Marsh Area Collected August, 2005: Open-File Report 2006-1169, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

    This is part of the following larger work.

    Cross, VeeAnn A. , Bratton, John F. , Crusius, John, Colman, John A. , and McCobb, Timothy D. , 2008, Submarine Hydrogeological Data from Cape Cod National Seashore: Open-File Report 2006-1169, U.S. Geological Survey, Coastal and Marine Geology Program, Woods Hole Science Center, Woods Hole, MA.

    Online Links:

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -69.971573
    East_Bounding_Coordinate: -69.965783
    North_Bounding_Coordinate: 41.835978
    South_Bounding_Coordinate: 41.832088

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 22-Aug-2005
    Ending_Date: 23-Aug-2005
    Currentness_Reference: ground condition

  5. What is the general form of this data set?

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

    2. What coordinate system is used to represent geographic features?

  7. How does the data set describe geographic features?

    Entity_and_Attribute_Overview:
    This Excel spreadsheet contains 6 individual worksheets. The first worksheet is a summary of the electrical conductance data acquired. This table has 10 columns that can be thought of as column pairs. The first column header indicates the sample number (i.e. SP2005-1) and the Depth Below Sediment Surface in meters. The second column is the same sample (i.e. SP2005-1) and shows the electrical conductance in milli-Siemens per meter - with a value at each depth indicated in column 1. The 3rd and 4th columns are the depth and electrical conductance values (respectively) for sample SP2005-2. The 5th and 6th columns are the data for SP2005-4, while the 7th and 8th columns are for sample location SP2005-5. In addition to this summary worksheet, 5 more worksheets are present in the Excel file. The remaining worksheets are more detailed information for each sample location. The upper portion of the worksheet gives some basic information in terms of crew, weather, date etc. The columns of information following this header information are a table containing 8 columns. Location ID represents the sample location (i.e. SP2005-1) combined with the sample depth in feet (i.e. surf is surface water; 00.0 is sediment water interface). Time is the sample time. Water Depth (ft) is the water depth in feet at the sample location. Surface conductance is the water conductance measured in milli-Siemens per meter. Sediment/Drive Description gives a qualitative description of the medium the probe is being inserted into. This can be either a sediment description, or how hard it was to advance the probe. Depth Below Bottom (ft) is the depth below the sediment water interface measured in feet. A negative value indicates a measurement taken above the sediment water interface. EC (mS/m) is the electrical conductance, measured in milli-Siemens per meter, at that sample location. The Notes column represents any additional information noted by the scientist in the field.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    John F. Bratton
    U.S. Geological Survey
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2254 (voice)
    (508) 457-2310 (FAX)
    jbratton@usgs.gov

Why was the data set created?

To supply the Geoprobe measurement results in a single Excel spreadsheet that includes the summary information, as well as the individual probe measurement results on individual worksheet pages within the spreadsheet.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 2005 (process 1 of 3)
    The electrical conductance (EC) of porewater was measured using a Geoprobe SC2000 at several locations, and at numerous depths within a single location, in the Nauset Marsh area.

    Person who carried out this activity:

    John F. Bratton
    U.S. Geological Survey
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2254 (voice)
    (508) 457-2310 (FAX)
    jbratton@usgs.gov

    Date: 2005 (process 2 of 3)
    Multiple measurements were taken at each sample location and an average EC value (in milli-Siemens per meter) was recorded.

    Person who carried out this activity:

    John F. Bratton
    U.S. Geological Survey
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2254 (voice)
    (508) 457-2310 (FAX)
    jbratton@usgs.gov

    Date: 2007 (process 3 of 3)
    This information was transferred to an Excel spreadsheet. The first worksheet in the spreadsheet is a summary of the results. Subsequent worksheets are the results from each individual probe.

    Person who carried out this activity:

    John F. Bratton
    U.S. Geological Survey
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2254 (voice)
    (508) 457-2310 (FAX)
    jbratton@usgs.gov

  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    This dataset is complete inasmuch as all the geoprobe data collected for this study is represented.

  5. How consistent are the relationships among the observations, including topology?

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

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.

  1. Who distributes the data set? (Distributor 1 of 1)

    John F. Bratton
    U.S. Geological Survey
    384 Woods Hole Rd.
    Woods Hole, MA 02543-1598

    (508) 548-8700 x2254 (voice)
    (508) 457-2310 (FAX)
    jbratton@usgs.gov

  2. What's the catalog number I need to order this data set?

    Downloadable Data

  3. What legal disclaimers am I supposed to read?

    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.

  4. How can I download or order the data?

  5. What hardware or software do I need in order to use the data set?

    These data are available in Microsoft Excel spreadsheet format. The user must have software capable of reading or importing the Excel formatted data file.

Who wrote the metadata?

Dates:
Last modified: 25-Feb-2008
Metadata author:
VeeAnn A. Cross
U.S. Geological Survey
Marine Geologist
384 Woods Hole Rd.
Woods Hole, MA 02543-1598

(508) 548-8700 x2251 (voice)
(508) 457-2310 (FAX)
vatnipp@usgs.gov

Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.8.6 on Tue Jul 08 11:36:39 2008