YSI water quality data from August 2015 from Dauphin Island and the surrounding areas.

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Frequently anticipated questions:

What does this data set describe?

Title:
YSI water quality data from August 2015 from Dauphin Island and the surrounding areas.
Abstract:
Scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center collected 303 surface sediment samples from Dauphin Island, Alabama, and the surrounding water bodies in August 2015. These sediments were processed to determine physical characteristics such as organic content, bulk density, and grain-size. The environments where the sediments were collected include high and low salt marshes, over-wash deposits, dunes, beaches, sheltered bays, and open water. Sampling by the USGS was part of a larger study to assess the feasibility and sustainability of proposed restoration efforts for Dauphin Island, Alabama, and assess the island’s resilience to rising sea level and storm events. The data presented in this publication can be used by modelers to attempt validation of hindcast models and create predictive forecast models for both baseline conditions and storms. This study was funded by the National Fish and Wildlife Foundation, via the Gulf Environmental Benefit Fund. This report serves as an archive for sedimentological data derived from surface sediments. Downloadable data are available as Excel spreadsheets, JPEG files, and formal Federal Geographic Data Committee metadata (data downloads).
Supplemental_Information:
This publication contains data for field activities conducted in August 2015 (15BIM09-DA).
  1. How might this data set be cited?
    Ellis, Alisha M., Marot, Marci E., Smith, Christopher G., and Wheaton, Cathryn J., 20170410, YSI water quality data from August 2015 from Dauphin Island and the surrounding areas.: U.S. Geological Survey Data Series DS1046.

    Online Links:

    This is part of the following larger work.

    Ellis, Alisha M., Marot, Marci E., Smith, Christopher G., and Wheaton, Cathryn J., 20170410, The Physical Characteristics of the Sediments on and Surrounding Dauphin Island, Alabama: U.S. Geological Survey Data Series DS1046, U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center, St. Petersburg, Florida.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -88.34300
    East_Bounding_Coordinate: -88.04000
    North_Bounding_Coordinate: 30.30000
    South_Bounding_Coordinate: 30.17000
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 12-Aug-2015
    Ending_Date: 20-Aug-2015
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: tabular digital data
  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?
    15BIM09-DA-YSI_Data.xlsx.zip
    Water quality parameter results for each sampling site around Dauphin Island, Alabama. (Source: USGS)
    Sample ID
    Sample identification number (Source: USGS) Character string. Sample IDs listed within the table used the naming convention 15BIM09-DA-^^X. Where “15BIM09” indicates that it was the ninth field trip that falls into the category of Barrier Island Mapping during the year 2015, "DA" stands for Dauphin Island, “^^” is the site location number, and “X” is a place holder for "S" (land surface sample) or "G" (PONAR or VanVeen sediment grab sample).
    YSI Temperatures (degrees C)
    The temperature of the water 1 meter below the water's surface measured in degrees Celsius. A value of -999 may represent a probe malfunction. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:-999
    Maximum:35.6
    YSI Pressure (mmHg)
    The pressure of the water 1 meter below the water's surface measured in millimeters of mercury. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:761.5
    Maximum:765
    YSI Dissolved Oxygen (%)
    The percent dissolved oxygen of the water 1 meter below the water's surface. A value of -999 may represent a probe malfunction. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:-999
    Maximum:180.7
    YSI Dissolved Oxygen (mg/L)
    The amount of dissolved oxygen of the water 1 meter below the water's surface measured in milligrams per liter. A value of -999 may represent a probe malfunction. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:-999
    Maximum:75.2
    YSI Specific Conductance (mS/cm)
    The specific conductance of the water 1 meter below the water's surface measured in millisiemens per centimeter. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:36.66
    Maximum:52.4
    YSI Salinity
    The salinity of the water 1 meter below the water's surface measured in practical salinity units. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:22.98
    Maximum:34.4
    YSI pH
    The pH of the water 1 meter below the water's surface. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:6.3
    Maximum:8.42
    YSI pH (mV)
    The pH of the water 1 meter below the water's surface measured in millivolts. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:-122.4
    Maximum:42
    YSI Oxidation Reduction Potential
    The oxidation reduction potential of the water 1 meter below the water's surface. A value of -999 may represent a probe malfunction. NaN (not a number) indicates that no values were recorded at that sample site. (Source: USGS)
    Range of values
    Minimum:-999
    Maximum:237.5

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Alisha M. Ellis
    • Marci E. Marot
    • Christopher G. Smith
    • Cathryn J. Wheaton
  2. Who also contributed to the data set?
    U.S. Geological Survey, Coastal and Marine Geology Program, St. Petersburg Coastal and Marine Science Center
  3. To whom should users address questions about the data?
    U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
    Attn: Alisha M. Ellis
    Geologist
    600 4th Street South
    St. Petersburg, FL
    US

    (727) 502-8000 (voice)
    aellis@usgs.gov

Why was the data set created?

The 15BIM09-DA-YSI_Data.xlsx.zip file includes water quality data results from surface sediments collected on and around Dauphin Island in August 2015 with the YSI by the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center.

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: 2015 (process 1 of 2)
    The R/V Mako recorded water quality information with a YSI Professional Plus multi-sensor meter at a depth of 1 meter (m) below the water surface at each sample site. Person who carried out this activity:
    U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
    Attn: Alisha M. Ellis
    Geologist
    600 4th Street South
    St. Petersburg, FL
    U.S.

    (727) 502-8000 (voice)
    aellis@usgs.gov
    Date: 13-Oct-2020 (process 2 of 2)
    Added keywords section with USGS persistent identifier as theme keyword. Person who carried out this activity:
    U.S. Geological Survey
    Attn: VeeAnn A. Cross
    Marine Geologist
    384 Woods Hole Road
    Woods Hole, MA

    508-548-8700 x2251 (voice)
    508-457-2310 (FAX)
    vatnipp@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?
    The water quality data reported in the table were collected by the USGS SPCMSC, using a calibrated YSI Professional Plus. These data have not been independently verified for accuracy.
  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 is a complete water quality data file for the waters on and around Dauphin Island.
  5. How consistent are the relationships among the observations, including topology?
    The data includes sample ID, temperature, pressure, dissolved oxygen, specific conductance, salinity, pH, and oxidation reduction potential.

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:
Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. The U.S. Geological Survey requests that it be acknowledged as the originator of this dataset in any future products or research derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
    Attn: Alisha M. Ellis
    600 4th Street South
    St. Petersburg, FL
    U.S.

    502-8000 (voice)
    aellis@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?
    Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Any use of trade, firm, or product name 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. Is there some other way to get the data?
    none
  6. What hardware or software do I need in order to use the data set?
    The spreadsheet included in this .zip file was created for use with Microsoft Excel 2016. It may also be viewed with the Microsoft Excel viewer or by downloading a Microsoft Compatibility Pack to view with older versions of Microsoft Excel.

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2020
Metadata author:
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Attn: Alisha M. Ellis
Geologist
600 4th Street South
St. Petersburg, FL
U.S.

(727) 502-8000 (voice)
aellis@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/spcmsc/DS1046_YSI_Data-met.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:18:47 2021