Time-series oceanographic data from the Monterey Canyon, CA October 2015 - March 2017

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Frequently anticipated questions:

What does this data set describe?

Title:
Time-series oceanographic data from the Monterey Canyon, CA October 2015 - March 2017
Abstract:
Time-series data of water depth, velocity, turbidity, and temperature were acquired between 5 October 2015 and 21 March 2017 within the Monterey Canyon off of Monterey, CA, USA. In order to better understand the triggering, progression and evolution of turbidity currents in Monterey Submarine Canyon, an experiment was designed to directly measure velocity, suspended sediment and physical water properties (temperature, salinity and density) along the canyon axis during an 18-month period. Three moorings in the upper canyon (MS1, MS2, MS3) containing oceanographic instruments and Anderson- type sediment traps were deployed during three consecutive six-month periods (A: October 2015 - April 2016; B: April - October 2016; C: October 2016 - March 2017). In addition, a bottom platform to the South of the canyon head (MS0) housed instrumentation to measure currents and waves on the adjacent shelf. The mooring diagram image files are a generalized representation of the deployed instrumentation at each site, and are included as a visual aid for understanding the sampling environment. A text file of the specific sensors listing parameters measured is also included.
Supplemental_Information:
Information about the data collection field activities can be found at: http://cmgds.marine.usgs.gov/fan_info.php?fan=2015-619-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2016-610-FA http://cmgds.marine.usgs.gov/fan_info.php?fan=2016-670-FA
  1. How might this data set be cited?
    Ferreira, Joanne T., Rosenberger, Kurt J., and Maier, Katherine L., 2019, Time-series oceanographic data from the Monterey Canyon, CA October 2015 - March 2017: data release DOI:10.5066/F7FT8J7Q, 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: -121.9699
    East_Bounding_Coordinate: -121.8386
    North_Bounding_Coordinate: 36.7936
    South_Bounding_Coordinate: 36.7518
  3. What does it look like?
    https://www.sciencebase.gov/catalog/file/get/5a74c1fce4b00f54eb1c828f?name=MontCanyon2015Basemap.png&allowOpen=true (PNG)
    Image map of locations of instrument moorings
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 05-Oct-2015
    Ending_Date: 21-Mar-2017
    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?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Point (4)
    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 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?
    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)
    • Joanne T. Ferreira
    • Kurt J. Rosenberger
    • Katherine L. Maier
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    PCMSC Science Data Coordinator
    U.S. Geological Survey, Pacific Coastal and Marine Science Center
    2885 Mission Street
    Santa Cruz, CA
    USA

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

Why was the data set created?

These time-series data were collected as part of a larger investigation into sediment transport within the Monterey Canyon off of Monterey, CA, USA.

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: 05-Oct-2015 (process 1 of 9)
    Oceanographic instruments were deployed in the Monterey Canyon to collect time-series data. Instruments included in deployment are: RDI Workhorse Monitor Wave and Current Gauge, Seabird SBE-37 Microcat Temperature and Salinity Logger, and additional instrumentation as listed in the CCE15_Mooring_Sensor_List.csv.
    Date: 17-Jan-2016 (process 2 of 9)
    Mooring MS1 was recovered by local fishermen after the mooring line parted. The data from the retrieved instruments were post-processed and sequentially added to this data release.
    Date: 07-Apr-2016 (process 3 of 9)
    Oceanographic instruments were retrieved and replaced with similar instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
    Date: 06-Oct-2016 (process 4 of 9)
    Oceanographic instruments were retrieved and replaced with similar instruments and programing in order to refresh memory space and battery life. The data from the retrieved instruments were post-processed and sequentially added to this data release.
    Date: 21-Mar-2017 (process 5 of 9)
    Oceanographic instruments were retrieved at MS1, MS2, and MS3. The data from the retrieved instruments were post-processed and sequentially added to this data release.
    Date: 07-Jul-2017 (process 6 of 9)
    Oceanographic instruments were retrieved at MS0. The data from the retrieved instruments were post-processed and sequentially added to this data release.
    Date: 20-Apr-2018 (process 7 of 9)
    Data were accumulated into NetCDF files.
    Date: 20-Apr-2018 (process 8 of 9)
    Files are named with a convention that uses a 12 to 14-digit alpha-numeric code. The first six characters for this dataset are all 'CCE15M' for the experiment Combined Canyon Experiment, the 2-digit calendar year at the start of the experiment (15, 2015) and 'M' to designate that the instrument was on a mooring in the water column. The seventh character is a numeric code for the site (0, 1, 2, or 3) in which an increasing number indicates increasing water depth. The eighth character (A-C) designates the deployment time period. The ninth and tenth characters represent the instrument position on the platform, where 01 is the top-most. Next is a two to four-character code for data type: wh and aqd refer respectively to RDInstruments and Nortek acoustic doppler current profilers; alt, altimeter. Suffixes are additive indicating the logger recorded c, conductivity; t, temperature; d, depth; p, pressure; and tu, turbidity. Files of wave statistics from RDI ADCPs have the suffix 'wvs-p'.
    Date: 19-Oct-2020 (process 9 of 9)
    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
  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?
    No formal attribute accuracy tests were conducted.
  2. How accurate are the geographic locations?
    A formal accuracy assessment of the horizontal positional information in the data set has either not been conducted, or is not applicable.
  3. How accurate are the heights or depths?
    A formal accuracy assessment of the vertical positional information in the data set has either not been conducted, or is not applicable.
  4. Where are the gaps in the data? What is missing?
    Dataset is considered complete for the information presented, as described in the abstract. Users are advised to read the metadata for each part of this data release 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 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
    USA

    1-888-275-8747 (voice)
    sciencebase@usgs.gov
  2. What's the catalog number I need to order this data set? Downloadable time-series data in NetCDF format. NetCDF files are grouped into four (4) different zip files, one zip file per instrument mooring. The zip file names consist of a 7-digit alpha-numeric code, where the first 5 digits (CCE15) indicate the experiment designation and year of the initial deployment (Combined Canyon Experiment, 2015), and the last 2 digits indicate which of the 4 moorings the instruments were mounted (M0-M3). The mooring diagram image files are a generalized representation of the deployed instrumentation at each site, and are included as a visual aid for understanding the sampling environment. A text file of the specific sensors listing parameters measured is also included.
  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?

Who wrote the metadata?

Dates:
Last modified: 19-Oct-2020
Metadata author:
PCMSC Science Data Coordinator
U.S. Geological Survey, Pacific Coastal and Marine Science Center
2885 Mission Street
Santa Cruz, CA
USA

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_F7FT8J7Q/CCE15_Time_Series_metadata.faq.html>
Generated by mp version 2.9.50 on Tue Sep 21 18:17:11 2021