Dataset Information

title: BED05 Event Trajectory on 15 January 2016 during the Coordinated Canyon Experiment
seconds_offset: 25200.00000000000
seconds_slope: 0.000000000000000
bar_offset: -1.500000000000000
bar_slope: 0.000000000000000
yaw_offset: 0.000000000000000
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.
netcdf_version: 3.6
Conventions: CF-1.6
date_created: 2016-06-07T16:22:17.907557Z
date_update: 2016-06-07T16:22:17.907557Z
date_modified: 2016-06-07T16:22:17.907557Z
featureType: trajectory
geospatial_lat_min: 36.79259900000000
geospatial_lat_max: 36.79758300000000
geospatial_lon_min: -121.8879310000000
geospatial_lon_max: -121.8804950000000
geospatial_lat_units: degree_north
geospatial_lon_units: degree_east
geospatial_vertical_min: 405.2945784917683
geospatial_vertical_max: 432.2488676703049
geospatial_vertical_units: m
geospatial_vertical_positive: down
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/.
time_coverage_start: 2016-01-15T21:53:11Z
time_coverage_end: 2016-01-15T22:02:36.000011Z
distribution_statement: Any use requires prior approval from the MBARI BEDS PI: Dr. Charles Paull
license: Any use requires prior approval from the MBARI BEDS PI: Dr. Charles Paull
useconst: Not intended for legal use. Data may contain inaccuracies.
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

Variables in this Dataset

time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
latitude: Grid
long_name: LATITUDE
standard_name: latitude
units: degree_north
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)
latitude: Array of 64 bit Reals [time = 0..2591]
long_name: LATITUDE
standard_name: latitude
units: degree_north
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)
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
longitude: Grid
long_name: LONGITUDE
standard_name: longitude
units: degree_east
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)
longitude: Array of 64 bit Reals [time = 0..2591]
long_name: LONGITUDE
standard_name: longitude
units: degree_east
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)
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
depth: Grid
long_name: DEPTH
standard_name: depth
units: m
comment: Adjusted Pressure converted to depth with: np.interp(self.s2013, self.ps2013, eos80.dpth(pr_adj * 10.0, meanLat))
depth: Array of 64 bit Reals [time = 0..2591]
long_name: DEPTH
standard_name: depth
units: m
comment: Adjusted Pressure converted to depth with: np.interp(self.s2013, self.ps2013, eos80.dpth(pr_adj * 10.0, meanLat))
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
XA: Grid
long_name: Acceleration along X-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
XA: Array of 64 bit Reals [time = 0..2591]
long_name: Acceleration along X-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
YA: Grid
long_name: Acceleration along Y-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
YA: Array of 64 bit Reals [time = 0..2591]
long_name: Acceleration along Y-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
ZA: Grid
long_name: Acceleration along X-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
ZA: Array of 64 bit Reals [time = 0..2591]
long_name: Acceleration along X-axis
comment: Recorded by instrument
coordinates: time depth latitude longitude
units: g
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
A: Grid
long_name: Acceleration Magnitude
comment: Computed with: np.sqrt(self.ax**2 + self.ay**2 + self.az**2)
coordinates: time depth latitude longitude
units: g
A: Array of 64 bit Reals [time = 0..2591]
long_name: Acceleration Magnitude
comment: Computed with: np.sqrt(self.ax**2 + self.ay**2 + self.az**2)
coordinates: time depth latitude longitude
units: g
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
XR: Grid
long_name: Rotation about X-axis
standard_name: platform_pitch_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units: degree
XR: Array of 64 bit Reals [time = 0..2591]
long_name: Rotation about X-axis
standard_name: platform_pitch_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units: degree
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
YR: Grid
long_name: Rotation about Y-axis
standard_name: platform_yaw_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units: degree
YR: Array of 64 bit Reals [time = 0..2591]
long_name: Rotation about Y-axis
standard_name: platform_yaw_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units: degree
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
ZR: Grid
long_name: Rotation about Z-axis
standard_name: platform_roll_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units:
ZR: Array of 64 bit Reals [time = 0..2591]
long_name: Rotation about Z-axis
standard_name: platform_roll_angle
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_euler() method
coordinates: time depth latitude longitude
units:
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
MX: Grid
long_name: X-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
MX: Array of 64 bit Reals [time = 0..2591]
long_name: X-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
MY: Grid
long_name: Y-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
MY: Array of 64 bit Reals [time = 0..2591]
long_name: Y-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
MZ: Grid
long_name: Z-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
MZ: Array of 64 bit Reals [time = 0..2591]
long_name: Z-component of rotation vector
comment: Converted from recorded Quaternion with Python euclid package Quaternion.get_angle_axis() method
coordinates: time depth latitude longitude
units:
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
ROTRATE: Grid
long_name: Absolute rotation rate about rotation vector
comment: Computed from angle output from Quaternion.get_euler() and the angle difference from one time step to the next
coordinates: time depth latitude longitude
units: degree/second
ROTRATE: Array of 64 bit Reals [time = 0..2591]
long_name: Absolute rotation rate about rotation vector
comment: Computed from angle output from Quaternion.get_euler() and the angle difference from one time step to the next
coordinates: time depth latitude longitude
units: degree/second
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
ROTCOUNT: Grid
long_name: Rotation Count - Cumulative Sum of ROTRATE * dt / 360 deg
comment: Computed with: np.cumsum(np.absolute(self.diffrot)) / 2. / np.pi
coordinates: time depth latitude longitude
ROTCOUNT: Array of 64 bit Reals [time = 0..2591]
long_name: Rotation Count - Cumulative Sum of ROTRATE * dt / 360 deg
comment: Computed with: np.cumsum(np.absolute(self.diffrot)) / 2. / np.pi
coordinates: time depth latitude longitude
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
P: Grid
long_name: Pressure
comment: Recorded pressure interpolated to IMU samples with np.interp(self.s2013, self.ps2013, self.pr * 10.0)
coordinates: time depth latitude longitude
units: dbar
P: Array of 64 bit Reals [time = 0..2591]
long_name: Pressure
comment: Recorded pressure interpolated to IMU samples with np.interp(self.s2013, self.ps2013, self.pr * 10.0)
coordinates: time depth latitude longitude
units: dbar
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
P_RATE: Grid
long_name: Rate of change of pressure
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
coordinates: time depth latitude longitude
units: dbar/s
P_RATE: Array of 64 bit Reals [time = 0..2591]
long_name: Rate of change of pressure
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
coordinates: time depth latitude longitude
units: dbar/s
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00
P_ADJUSTED: Grid
long_name: Adjusted Pressure
comment: Recorded pressure adjusted with bar_offset = -1.5 and bar_slope = 0.0
coordinates: time depth latitude longitude
units: dbar
P_ADJUSTED: Array of 64 bit Reals [time = 0..2591]
long_name: Adjusted Pressure
comment: Recorded pressure adjusted with bar_offset = -1.5 and bar_slope = 0.0
coordinates: time depth latitude longitude
units: dbar
time: Array of 64 bit Reals [time = 0..2591]
standard_name: time
long_name: Time(GMT)
units: seconds since 2013-01-01 00:00:00