rozovskii: rozovskii

In jasonfischer/rivSurveyR: A Package to Process Water Velocities Collected With SonTek Acoustic Doppler Current Profilers

Description

Uses the Rozovskii method of rotation to calculate secondary velocities within a cross-section

Usage

rozovskii(ve, vn, vu, meanVe, meanVn)

Arguments

ve	Vector of east velocities within cells
vn	Vector of north velocities within cells. Must be the same length as ve.
vu	Vector of vertical velocities within cells. Must be the same length as ve.
meanVe	Vector of depth averaged east velocities of the ensemble a cell belongs to. Must be the same length as ve.
meanVn	Vector of depth averaged north velocities of the ensemble a cell belongs to. Must be the same length as ve.

Value

Returns a data.frame with heading of primary velocity (VpHeading.roz), compass heading of secondary velocity (vsCompassHeading.roz), arithmetic heading of secondary velocity (vsArithmeticHeading.roz), difference between cell heading and primary velocity heading (Theta.roz), primary velocity (vp.roz), secondary velocity (vs.roz), cross-stream component of primary velocity (vpy.roz), down-stream component of primary velocity (vpx.roz), cross-stream component secondary velocity (vsy.roz), and down-stream component of secondary velocity (vsx.roz)

References

Rhoads, B.L. and S.T. Kenworthy. 1998. Time-averaged flow structure in the central region of a stream confluence. Earth Surface Processes and Landforms 23:171-191.

Examples

data(cellVels)
velSub <- cellVels[transectName == "t1",,]
roz <- rozovskii(velSub$Vel.E, velSub$Vel.N, velSub$Vel.up, velSub$Mean.Vel.E, velSub$Mean.Vel.N)

jasonfischer/rivSurveyR documentation built on May 18, 2019, 5:54 p.m.