oce (version 0.7-1)

adv: ADV (acoustic-doppler velocimeter) dataset

Description

This is a sampling of measurements made with a Nortek Vector acoustic Doppler velocimeter deployed as part of the St Lawrence Internal Wave Experiment (SLEIWEX). Various identifying features have been redacted, and velocities have modified by adding random numbers chosen from a normal distribution with standard deviation of 2 percent of signal.

Usage

data(adv)

source

This file came from the SLEIWEX-2008 experiment.

See Also

See read.adv for notes on the contents of adv objects, and for functions to work with them. Also, see plot.adv to learn about plotting ADP objects.

Examples

library(oce)
data(adv)

# Velocity time-series
plot(adv)

# Spectrum of upward component of velocity, with ``turbulent'' reference line
s <- spectrum(adv$data$v[,3],plot=FALSE)
plot(log10(s$freq), log10(s$spec), type='l')
for (a in seq(-20, 20, by=1))
    abline(a=a, b=-5/3, col='gray', lty='dotted')