Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA

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Frequently anticipated questions:

What does this data set describe?

Title:
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA
Abstract:
Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA. The data are available in NetCDF format, grouped together in zip files by instrument site location. These data support a modeling study on the effects of potential watershed restoration on decreasing sediment loads to adjacent reefs (Storlazzi and others, 2023).
Supplemental_Information:
Additional information about the field activity from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2017-679-FA
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?
    Cheriton, Olivia M., Storlazzi, Curt D., Rosenberger, Kurt J., and Logan, Joshua B., 20230221, Time-series data of water surface elevation, waves, currents, temperature, and turbidity collected between November 2017 and March 2018 off the west coast of Maui, Hawaii, USA: data release DOI:10.5066/P9DK9O60, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -156.699830
    East_Bounding_Coordinate: -156.639553
    North_Bounding_Coordinate: 21.014062
    South_Bounding_Coordinate: 20.910362
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/63adcd52d34e92aad3ca5b01?name=WMaui_map_study_area.jpg&allowOpen=true (JPEG)
    Map of west Maui study area showing deployment sites
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 09-Nov-2017
    Ending_Date: 03-Apr-2018
    Currentness_Reference:
    ground condition at time data were collected
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: NetCDF files
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      Indirect_Spatial_Reference:
      Data were collected continuously along survey transects. Refer to self-contained NetCDF files for more location information.
    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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is 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.
      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: Mean Sea Level
      Altitude_Resolution: 0.1
      Altitude_Distance_Units: meters
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates
  7. How does the data set describe geographic features?
    Entity_and_Attribute_Overview:
    NetCDF files are self-contained and attribute information may be found in the header of the file itself.
    Entity_and_Attribute_Detail_Citation:
    The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Olivia M. Cheriton
    • Curt D. Storlazzi
    • Kurt J. Rosenberger
    • Joshua B. Logan
  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?

The U.S. Geological Survey (USGS) Coral Reef Project collected these data as part of an effort in the United States and its trust territories to better understand the effects of geologic and oceanographic processes on coral reef systems. This project was funded by the USGS Coastal and Marine Hazards and Resources Program, the U.S. Army Corps of Engineers, and the Deltares Impacts of Extreme Weather (11203752) Strategic Research Program. The project goals were to (1) resolve and simulate the hydrodynamics and terrestrial sediment dynamics off the coast of the U.S. Coral Reef Task Force Watershed Priority Initiative priority study area and (2) provide information on terrestrial sediment dispersal and residence times over nearshore coral reefs for present conditions as well as potential watershed restoration scenarios. To achieve these goals, the USGS and Deltares collaborated on a two-part effort involving a field campaign and a physics-based, coupled circulation and sediment dynamics model for the West Maui region. During the 4-month field campaign, the USGS collected time series data of tides, waves, currents, and turbidity off the coast of West Maui. These data were then used to calibrate and validate the model, which simulated rain-driven flood events during different wave conditions and watershed restoration scenarios. With these model simulations, we examined how sediment that discharged from West Maui streams affected coral reefs habitats in the adjacent coastal waters, and we assessed how the patterns and magnitude of these effects changed under different wave conditions and watershed restoration scenarios.

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: 2020 (process 1 of 3)
    Oceanographic instruments were deployed on the west coast of Maui, Hawai’i to collect time-series data. Instruments included in deployment were: Nortek Acoustic Wave and Current meters coupled with Seapoint Optical Backscatter sensors, RBR Virtuoso D wave gauges, RBR V-Tu turbidity sensors, and Marotte HS current meters.
    Date: 2020 (process 2 of 3)
    Data were accumulated into NetCDF files.
    Date: 2020 (process 3 of 3)
    Files are named with a convention that uses a 13-digit alpha-numeric code. The first three characters for this dataset are all 'MAU' for the experiment name. The fourth and fifth characters represent the calendar year in which the first data point in the file was taken (17 = 2017). The sixth, seventh, and eighth characters are a code for the site name (HKG, HKP, etc.), with the eighth character representing either the deeper grate (G) or the shallower pole (P) instrument platform. The ninth and tenth characters represent the instrument position on the platform, where 01 is the instrument nearest the water surface. Next is a two or three-character code for data type (aw = Nortek acoustic wave and current profiler [AWAC]; mar = Marotte current meter; rbr = RBR wave gauge; tl = temperature logger; Tu = RBR V-Tu turbidity sensor). An additional code may follow, either with or without a hyphen, to indicate the type of data subset in the file (-b = burst data; -s = burst-averaged data; -wvs = wave statistics; -cal = Nortek AWAC current and pressure data; WVS-p = Nortek AWAC wave statistics).
  3. What similar or related data should the user be aware of?
    Storlazzi, Curt D., Cheriton, Olivia M., Cronin, Katherine M., Luuk H. Van der Heijden, Winter, Gundula, Rosenberger, Kurt J., Logan, Joshua B., and McCall, Robert T., 2023, Observations of coastal circulation, waves, and sediment transport along West Maui, Hawai’i (November 2017--March 2018), and modeling effects of potential watershed restoration on decreasing sediment loads to adjacent coral reefs.

    Online Links:

    Other_Citation_Details: U.S. Geological Survey Open-File Report

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

  1. How well have the observations been checked?
    Data were visually inspected for quality, but generally all data are included in time series.
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has not been conducted. Stated accuracy of the GPS unit used to geolocate the instrument package is +/- 5 m.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has not been conducted. Accuracy of the vertical position of the instruments is +/- 0.5 m.
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. However, there are several known issues. The RBR wave and tide gage at Honokowai Shallow recorded fouled pressure measurements during the latter part of the deployment (after approximately January 25, 2018). The Marotte current meter at the Honolua Shallow site stopped recording data on February 22, 2018. The optical backscatter (OBS) at the Mahinahina Shallow site was recovered with a broken sensor cover, but the data were retrievable and limited only by fouling. Each of the OBS sensors fouled at different times. For the shallow sites, unfouled turbidity measurements were recorded for 105.0 days at Honolua Shallow, 13.0 days at Kahana Shallow, 25.0 days at Mahinahina Shallow, 23.0 days at Honokowai Shallow, and 31.0 days at Wahikuli Shallow. For the deep sites, unfouled turbidity measurements were recorded for 62.0 days at Kahana Deep, 58.0 days at Honokowai Deep, and 142.0 days at Ka’anapali Deep. Users are advised to read the rest of the metadata record carefully for additional details.
  5. How consistent are the relationships among the observations, including topology?
    Data fall within expected ranges.

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 and Deltares 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? Downloadable data in NetCDF format. NetCDF files are grouped into eight (8) different zip files, one zip file per deployment site. The zip file names consist of a multi-element alphanumeric code delimited by underscores. The first element represents the field study (MAU17 = Maui 2017). The second element is the site code (for example, HNP), and the last two elements are the long names of the sites (for example, Honolua Shallow).
  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 software capable of reading a NetCDF file.

Who wrote the metadata?

Dates:
Last modified: 21-Feb-2023
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_P9DK9O60/MAU17_metadata_final.faq.html>
Generated by mp version 2.9.51 on Fri Feb 24 09:53:00 2023