2014–2015 Ocean Current and Pressure Time Series Data from the Upper Florida Keys: Crocker Reef, FL
Three Acoustic Doppler current profilers (ADCP), a current meter and a pressure logger were deployed at Crocker Reef, a senile (dead) barrier reef located in the northern portion of the Florida Reef Tract from December 12, 2014 to January 30, 2015 to quantify flow characteristics in various sub-regions. A Nortek Aquadopp current meter was deployed on the reef flat and configured to measure three-dimensional flow velocities at the middle of the water column. Current measurements were taken at a rate of 1 hertz (Hz) for 120 seconds (s) every 10 minutes; each 120-s sampling was internally averaged to provide data at 10-minute resolution.
Torres-Garcia, Legna M., Zawada, David, and Smiley, Nathan, 20170819, 2014–2015 Ocean Current and Pressure Time Series Data from the Upper Florida Keys: Crocker Reef, FL: U.S. Geological Survey Data Release doi:10.5066/F7VD6XBF, U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center.
The CF-compliant metadata in the global attributes of the NetCDF file provides spatial information as well as the start date and time step for the time-series of data in the file. It also provides information about the instrument configuration and deployment details.
The entity and attribute information was generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
The temperature, water depth, wave and current data from the fore reef and reef flat in Crocker Reef, FL were used to quantify the physical characteristics and forcing on the reef. This time series dataset includes raw data downloaded from a current meter installed at the Aqua site location. The files provided in this data release were converted from the original, proprietary format to the Network Common Data Form (NetCDF) to help facilitate accessibility and distribution to the public.
Prior to survey commencement, the Aquadopp was calibrated by Nortek to ensure equipment-related errors would be minimal and the instrument was operating at peak efficiency. Using a self-contained underwater breathing apparatus (SCUBA), USGS staff deployed the meter at the pre-determined site, called Aqua on December 10, 2014. Instrument was recording with internal data logger and power using internal batteries, it was retrieved the afternoon of January 30, 2015 to download data following instructions in the Aquadopp current meter manual. Using a Matlab script, the raw data were converted from a proprietary file type to NetCDF format and trimmed to include only points that correspond to times when the instrument was actually deployed on the seafloor.
Person who carried out this activity:
How accurate are the geographic locations?
Location information (point position) for this site was obtained from a Garmin GPSmap 62s handheld global positioning system (GPS) with a nominal accuracy of 3 to 5 meters (m) 95% typical (WAAS accuracy in North America).
Where are the gaps in the data? What is missing?
This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details.
This digital publication was prepared by an agency of the United States Government. 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. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
UFK14Aqua1571aqc-trm.nc is a NetCDF file that contains current and pressure observations from December 2014 to January 2015. File include resolution, location of instrument, data collection statistics, time, ocean current and pressure series.
in format NetCDF
(version NetCDF version 18.104.22.168)