HARPRP(1)

NAME
harprp - extracts individual results from a tidal load file

SYNOPSIS

harprp o | g | z | v

harprp d | l | | s | t azimuth

DESCRIPTION

Harprp reads from standard input, a load file (or set of them), selects the numbers associated with a particular quantity, and writes out a file of harmonic constants suitable for tidal prediction by hartid. The designators (on the command line) are:

o   ocean-tide height; units are meters. In this case only, the ``load file'' is assumed to have only one entry, (per constituent), that being for the ocean tide; such a file is produced by oclook.

g   gravity; units are μgal, positive for decreasing $g$.

z   vertical displacement; units are millimeters, positive for up.

d   horizontal displacement at azimuth azimuth (given in degrees, clockwise from North); units are millimeters.

l   extensional strain at azimuth azimuth (given in degrees); units are nanostrain.

v   volume strain (for Poisson's ratio 0.25); units are nanostrain.

s   shear strain at azimuth azimuth (given in degrees); units are nanostrain (tensor strain).

t   tilt at azimuth azimuth (given in degrees); units are nanoradians.

The first two lines of the output file indicate that the phases are local, and give the longitude of the station. The subsequent lines give the Cartwright-Tayler version of the Doodson code for the tidal constituent, and the amplitude and phase. The final line gives an impossible Cartwright-Tayler code, to indicate EOF.

SEE ALSO
hartid

AUTHOR
D. C. Agnew