MB-System Unix Manual Page
Section: MB-System 5.0 (1)
Updated: 3 June 2013
mbm_xbt - Calculate sound speed from XBT data.
mbm_xbt -Iinfile [-Fformat
-Llatitude -Ssalinity -V -H]
mbm_xbt is a perl shellscript to translate various XBT data sets
from depth and temperature into depth and sound speed. Header
lines are turned into comments beginning with '#' characters. The
output filename consists of the input filename with the suffix ".sv".
The conversion is done using the DelGrosso equation as referenced
in Dusha et al.  (reference below).
David W. Caress
Monterey Bay Aquarium Research Institute
Dale N. Chayes
Center for Coastal and Ocean Mapping
University of New Hampshire
Christian do Santos Ferreira
MARUM - Center for Marine Environmental Sciences
University of Bremen
ALSO CONTRIBUTED TO THIS PROGRAM
Suzanne H. O'Hara
Lamont-Doherty Earth Observatory
Allows the user to select the type of XBT data. Currently supported
formats are: 1 = Sparton XBT, 2 = Sippican MK12 XBT, 3 = Sippican MK21.
Default: format = 2.
This "help" flag cause the program to print out a description
of its operation and then exit immediately.
Data file from which the input data will be read.
Latitude of the XBT cast.
Sets the salinity used to calculate sound speed from temperature
and depth. The default value of 35 ppt may be significantly
in error in some areas. Default: salinity = 35.
Causes mbm_xbt to operate in "verbose" mode so that it outputs
more information than usual.
There is a hard limit in the code that prevents temperatures less than
-2.0 degrees C from being used. Input lines containing temperatures less
than -2.0 will be ignored.
mbsystem(1), mbprocess(1), mbset(1),
Dusha, B. D., P. F. Worcester, B. D. Cornuelle, B. M. Howe,
On equations for the speed of sound in seawater, J. Acoust. Soc. Am.,
93, 255-275, 1993.
Let us know.
- MB-SYSTEM AUTHORSHIP
- ALSO CONTRIBUTED TO THIS PROGRAM
- SEE ALSO
Last Updated: 3 June 2013