DAP4 Data Request Form 50200054-57_trajectory.nc
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OPeNDAP DAP4 Data Request Form

dataset: 50200054-57_trajectory.nc
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Global Attributes
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      • NC_GLOBAL
        • title: BED05 Event Trajectory on 15 January 2016 during the Coordinated Canyon Experiment (Type is String)
        • seconds_offset: 25200.00000000000 (Type is Float64)
        • seconds_slope: 0.000000000000000 (Type is Float64)
        • bar_offset: -1.500000000000000 (Type is Float64)
        • bar_slope: 0.000000000000000 (Type is Float64)
        • yaw_offset: 0.000000000000000 (Type is Float64)
        • summary: Benthic Event Detector data from an in situ instrument designed to capture turbidity currents. Time adjusted with --seconds_offset 25200.0. Pressure adjusted with --bar_offset -1.5. (Type is String)
        • netcdf_version: 3.6 (Type is String)
        • Conventions: CF-1.6 (Type is String)
        • date_created: 2016-06-07T16:22:17.907557Z (Type is String)
        • date_update: 2016-06-07T16:22:17.907557Z (Type is String)
        • date_modified: 2016-06-07T16:22:17.907557Z (Type is String)
        • featureType: trajectory (Type is String)
        • geospatial_lat_min: 36.79259900000000 (Type is Float64)
        • geospatial_lat_max: 36.79758300000000 (Type is Float64)
        • geospatial_lon_min: -121.8879310000000 (Type is Float64)
        • geospatial_lon_max: -121.8804950000000 (Type is Float64)
        • geospatial_lat_units: degree_north (Type is String)
        • geospatial_lon_units: degree_east (Type is String)
        • geospatial_vertical_min: 405.2945784917683 (Type is Float64)
        • geospatial_vertical_max: 432.2488676703049 (Type is Float64)
        • geospatial_vertical_units: m (Type is String)
        • geospatial_vertical_positive: down (Type is String)
        • comment: BED devices measure 3 axes of acceleration and rotation about those 3 axes at 50 Hz. They also measure pressure at 1 Hz during an event. Those data are represented in this file as variables XA, YA, ZA, XR, YR, ZR, and P. Additional variables are computed by the bed2netcdf.py program; see the long_name and comment attributes for explanations. Source code for the calucations are in the bed2netcdf.py, BEDS.py, and util.py files on the subversion source code control server at MBARI: http://kahuna.shore.mbari.org/viewvc/svn/BEDs/trunk/BEDs/Visualization/py/. (Type is String)
        • time_coverage_start: 2016-01-15T21:53:11Z (Type is String)
        • time_coverage_end: 2016-01-15T22:02:36.000011Z (Type is String)
        • distribution_statement: Any use requires prior approval from the MBARI BEDS PI: Dr. Charles Paull (Type is String)
        • license: Any use requires prior approval from the MBARI BEDS PI: Dr. Charles Paull (Type is String)
        • useconst: Not intended for legal use. Data may contain inaccuracies. (Type is String)
        • history: Created by "../bed2netcdf.py -i 50200054.E00.OUT 50200055.E00.OUT 50200056.E00.OUT 50200057.E00.OUT -o 50200054-57_trajectory.nc -t ../BED05_Jan2016_event_50200054-57.csv --seconds_offset 25200 --bar_offset -1.50 --title BED05 Event Trajectory on 15 January 2016 during the Coordinated Canyon Experiment" on 2016-06-07T16:22:17.907557Z (Type is String)
Global Dimensions
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      [ /time = 0..2591 ]
Variables
time[ /time= 0..2591] (Type is Float64)
  • attributes
    • standard_name: time (Type is String)
    • long_name: Time(GMT) (Type is String)
    • units: seconds since 2013-01-01 00:00:00 (Type is String)
latitude[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: LATITUDE (Type is String)
    • standard_name: latitude (Type is String)
    • units: degree_north (Type is String)
    • comment: Latitude linearly intepolated onto thalweg data from file ../BED05_Jan2016_event_50200054-57.csv using formula np.interp(np.linspace(0,1,len(self.s2013)), np.linspace(0,1,len(self.traj_lat)), self.traj_lat) (Type is String)
longitude[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: LONGITUDE (Type is String)
    • standard_name: longitude (Type is String)
    • units: degree_east (Type is String)
    • comment: Longitude linearly intepolated onto thalweg data from file ../BED05_Jan2016_event_50200054-57.csv using formula np.interp(np.linspace(0,1,len(self.s2013)), np.linspace(0,1,len(self.traj_lon)), self.traj_lon) (Type is String)
depth[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: DEPTH (Type is String)
    • standard_name: depth (Type is String)
    • units: m (Type is String)
    • comment: Adjusted Pressure converted to depth with: np.interp(self.s2013, self.ps2013, eos80.dpth(pr_adj * 10.0, meanLat)) (Type is String)
XA[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Acceleration along X-axis (Type is String)
    • comment: Recorded by instrument (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: g (Type is String)
YA[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Acceleration along Y-axis (Type is String)
    • comment: Recorded by instrument (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: g (Type is String)
ZA[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Acceleration along X-axis (Type is String)
    • comment: Recorded by instrument (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: g (Type is String)
A[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Acceleration Magnitude (Type is String)
    • comment: Computed with: np.sqrt(self.ax**2 + self.ay**2 + self.az**2) (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: g (Type is String)
XR[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Rotation about X-axis (Type is String)
    • standard_name: platform_pitch_angle (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: degree (Type is String)
YR[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Rotation about Y-axis (Type is String)
    • standard_name: platform_yaw_angle (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: degree (Type is String)
ZR[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Rotation about Z-axis (Type is String)
    • standard_name: platform_roll_angle (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: (Type is String)
MX[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: X-component of rotation vector (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: (Type is String)
MY[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Y-component of rotation vector (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: (Type is String)
MZ[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Z-component of rotation vector (Type is String)
    • comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: (Type is String)
ROTRATE[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Absolute rotation rate about rotation vector (Type is String)
    • comment: Computed from angle output from Quaternion.get_euler() and the angle difference from one time step to the next (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: degree/second (Type is String)
ROTCOUNT[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Rotation Count - Cumulative Sum of ROTRATE * dt / 360 deg (Type is String)
    • comment: Computed with: np.cumsum(np.absolute(self.diffrot)) / 2. / np.pi (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
P[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Pressure (Type is String)
    • comment: Recorded pressure interpolated to IMU samples with np.interp(self.s2013, self.ps2013, self.pr * 10.0) (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: dbar (Type is String)
P_RATE[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Rate of change of pressure (Type is String)
    • comment: Pressure rate of change interpolated to IMU samples with np.append([0], np.diff(np.interp(self.s2013, self.ps2013, self.pr * 10.0))) * self.rateHz (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: dbar/s (Type is String)
P_ADJUSTED[ /time= 0..2591] (Type is Float64)
  • attributes
    • long_name: Adjusted Pressure (Type is String)
    • comment: Recorded pressure adjusted with bar_offset = -1.5 and bar_slope = 0.0 (Type is String)
    • coordinates: time depth latitude longitude (Type is String)
    • units: dbar (Type is String)
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