Surface-water temperature, salinity, pH, dissolved oxygen, and turbidity data from nearshore coral reef locations along the west coast of Hawaii Island (2010-2013)

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Frequently anticipated questions:

What does this data set describe?

Title:
Surface-water temperature, salinity, pH, dissolved oxygen, and turbidity data from nearshore coral reef locations along the west coast of Hawaii Island (2010-2013)
Abstract:
Spatial measurements of water temperature, specific conductance, salinity, pH, dissolved oxygen, and turbidity between 0.25 and 0.50 m water depth were collected every 10-seconds along and across shore at 12 principal study areas along west and east Hawaii Island. Measurements were made between 2010 and 2013 during different seasons and tide states over the course of 1.0 to 2.5 hours to evaluate the spatial and temporal extent of water properties that influence coral reef health and coral reef habitat availability.
Supplemental_Information:
Additional information about the field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=K210BI https://cmgds.marine.usgs.gov/fan_info.php?fan=B0111BI https://cmgds.marine.usgs.gov/fan_info.php?fan=B0211BI https://cmgds.marine.usgs.gov/fan_info.php?fan=K0313BI
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  1. How might this data set be cited?
    Grossman, Eric E., and Marrack, Lisa, 2019, Surface-water temperature, salinity, pH, dissolved oxygen, and turbidity data from nearshore coral reef locations along the west coast of Hawaii Island (2010-2013): data release DOI: 10.5066/F7154FJQ, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

    This is part of the following larger work.

    Grossman, Eric E., and Marrack, Lisa, 2019, Nearshore water properties and estuary conditions along the coral reef coastline of west Hawaii Island (2010-2014): data release DOI: 10.5066/F7154FJQ, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -156.04410
    East_Bounding_Coordinate: -154.82040
    North_Bounding_Coordinate: 19.97050
    South_Bounding_Coordinate: 19.42150
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 29-Mar-2011
    Ending_Date: 07-Dec-2013
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: comma-delimited text
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (16595)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 1.0E-6. Longitudes are given to the nearest 1.0E-6. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is D_WGS_1984.
      The ellipsoid used is WGS_1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.
  7. How does the data set describe geographic features?
    Multiparameter_SurfaceTowData.csv
    Table of data in CSV format (Source: U.S. Geological Survey)
    Site
    Alphanumeric code designating study sites. (Source: U.S. Geological Survey)
    ValueDefinition
    FFFreeze Face
    HHHonokohau Harbor
    HOHonaunau
    KBKailua Bay
    KCKaloko Cut
    KEKeauhou
    KFKaloko Fishpond
    KUKahaluu
    KWKeawaiki
    PUPuako
    WAWaiopai
    DateTime
    Date in YYYY/MM/DD HH:MM:SS format and local (Hawaii) time in 24-hr format (Source: U.S. Geological Survey)
    Range of values
    Minimum:2011/03/29 09:48:41
    Maximum:2013/12/07 14:13:32
    Units:YYYY/MM/DD HH:MM:SS
    Latitude (WGS 1984)
    Latitude in decimal degrees (Source: U.S. Geological Survey)
    Range of values
    Minimum:19.42150
    Maximum:19.97050
    Units:decimal degrees
    Longitude (WGS 1984)
    Longitude in decimal degrees (Source: U.S. Geological Survey)
    Range of values
    Minimum:-156.04410
    Maximum:-154.82040
    Units:decimal degrees
    Temp_C
    Temperature of water sampled in degrees Celsius (Source: U.S. Geological Survey)
    Range of values
    Minimum:18.23
    Maximum:29.61
    Units:Celsius
    SpCond_uS
    Specific conductance of water sampled in microseimens. NaN=missing or unmeasured values. (Source: U.S. Geological Survey)
    Range of values
    Minimum:2177
    Maximum:53080
    Units:microseimens
    Sal_psu
    Salinity of water sampled in parts per thousand (Source: U.S. Geological Survey)
    Range of values
    Minimum:2.22
    Maximum:34.97
    Units:Practical salinity units
    pH
    pH of water sampled. NaN=missing or unmeasured values. (Source: U.S. Geological Survey)
    Range of values
    Minimum:6.73
    Maximum:8.46
    Units:unitless
    ODO_sat_percent
    Dissolved oxygen of water sampled in percent saturation. NaN=missing or unmeasured values. (Source: U.S. Geological Survey)
    Range of values
    Minimum:62.4
    Maximum:196.4
    Units:percent saturation
    ODO_mgl
    Dissolved oxygen of water sampled in milligrams per liter. NaN=missing or unmeasured values. (Source: U.S. Geological Survey)
    Range of values
    Minimum:4.87
    Maximum:14.02
    Units:milligrams per liter
    FAN
    Alphanumeric code designating USGS Field Activity Number (Source: U.S. Geological Survey)
    ValueDefinition
    K0210BIUSGS Field Activity Number K-02-10-BI
    B0111BIUSGS Field Activity Number B-01-11-BI
    B0111BIUSGS Field Activity Number B-02-11-BI
    K0313BIUSGS Field Activity Number K-03-13-BI
    Entity_and_Attribute_Overview: The first line of the csv file is a header line.
    Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Eric E. Grossman
    • Lisa Marrack
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    Attn: PCMSC Science Data Coordinator
    2885 Mission Street
    Santa Cruz, CA

    831-427-4747 (voice)
    pcmsc_data@usgs.gov

Why was the data set created?

Continuous quantitative data from a range of depths and distances from shore were collected to characterize the temporal and spatial variability in water temperatures that influence coral reef habitats, coral health and the vulnerability of coral to bleaching. These data also establish important baseline information with which to track and identify changes owing to climate and land use change, including changes in runoff of terrestrial water and contaminants that can affect the quality of habitat for corals, fish and other wildlife of concern. Along the arid west coast of Hawaii Island terrestrial inputs of water occur primarily in the form of groundwater and this study focused on examining the extent that groundwater inputs to the coast influences coral reef water temperatures, coral health, and potential cold water refugia where corals may find resilience in light of observed increases in global coral bleaching associated with rising sea surface temperatures.

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: 2016 (process 1 of 3)
    Water temperature, specific conductance, salinity, pH, dissolved oxygen (concentration and percent saturation), and turbidity were measured with a YSI 6920V2 multiprobe water quality sensor and YSI 650 data collector. Measurements were made of surface water between 0.25 and 0.50 m depth every 10 seconds (~20 m) along transects along and across shore. Latitude and longitude for each measurement were collected with a Garmin GPS Map76SCx integrated with the data collector.
    Date: 19-Oct-2020 (process 2 of 3)
    Edited metadata to add keywords section with USGS persistent identifier as theme keyword. No data were changed. 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
    Date: 13-Oct-2021 (process 3 of 3)
    Performed minor edits to the metadata to correct typos. No data were changed Person who carried out this activity:
    U.S. Geological Survey
    Attn: Susan A. Cochran
    Geologist
    2885 Mission Street
    Santa Cruz, CA

    831-460-7545 (voice)
    scochran@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?
    Stated accuracies of the YSI 6920V2 multiparameter probe with ROX Optical Oxygen Sensor and Optical 6136 Turbidity Sensor are as follows: temperature = +/- 0.15 degrees Celsius; specific conductivity = +/- 0.001 mS/cm; salinity = +/- 0.1 parts per thousand; pH = +/- 0.2 units; dissolved oxygen percent saturation = +/- 1%; dissolved oxygen concentration = +/- 0.1 milligram per liter; turbidity = +/- 0.3 NTU. No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    Stated horizontal accuracy of the Garmin GPS is +/- 3.2 m.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Data are complete as presented. Users are advised to read the rest of the metadata record carefully for additional details. "NaN=missing or unmeasured values."
  5. How consistent are the relationships among the observations, including topology?
    No formal logical accuracy tests were conducted.

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:
USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey - ScienceBase
    Denver Federal Center, Building 810, Mail Stop 302
    Denver, CO

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? These data are available in comma-separated format (Multiparameter_SurfaceTowData.csv) and CSDGM FGDC-compliant metadata (Multiparameter_SurfaceTow_metadata.xml).
  3. What legal disclaimers am I supposed to read?
    Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.
  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 can be viewed with any text-reader software.

Who wrote the metadata?

Dates:
Last modified: 13-Oct-2021
Metadata author:
U.S. Geological Survey, Pacific Coastal and Marine Science Center
Attn: PCMSC Science Data Coordinator
2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)
pcmsc_data@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://cmgds.marine.usgs.gov/catalog/pcmsc/DataReleases/ScienceBase/DR_F7154FJQ/Multiparameter_SurfaceTows_metadata.faq.html>
Generated by mp version 2.9.50 on Thu Oct 14 14:47:20 2021