This CD contains the final version of the Scanfish
and of the shipboard ADCP data data in matlab (.mat) format.
in the subdirectory "data".
Scanfish:
The files "sw06all.mat" contains the following variables:
theta |
1720x70 |
963200 |
double array |
potential temperature |
sal |
1720x70 |
963200 |
double array |
salinity |
sigma |
1720x70 |
963200 |
double array |
potential density |
O2 |
1720x70 |
963200 |
double array |
oxygen [ml/l] |
O2Volt |
1720x70 |
963200 |
double array |
oxygen sensor voltage |
FluorVolt |
1720x70 |
963200 |
double array |
WetLabs fluorometer voltage |
xmiss_c |
1720x70 |
963200 |
double array |
light beam attenutation "beam_c" [1/m] |
XmissVolt |
1720x70 |
963200 |
double array |
WetLabs transmissometer voltage |
pres |
1720x70 |
963200 |
double array |
pressure |
z |
1x70 |
560 |
double array |
depth coordinate |
txyz |
1720x4 |
55040 |
double array |
time, longitude, latitude, depth |
There are 1720 profiles with 70 vertical bins each. "theta" refers to
potential temperature, "sal" to salinity, "sigma" to potential density,
"o2" to oxygen, and "xmiss_c" to light transmission (transmissometer
measurements in "beam_c", with units of 1/m. In addition, the perhaps
more familiar sensor output voltages for oxygen (O2Volt) and light
transmission (XmissVolt) are retained as well. Fluorometer output is
provided here in Volts only (FluorVolt). "txyz" stands for
time, longitude, latitude, bottom depth, with time in decimal days (noon on
January 1 corresponds to day 0.5; noon on August 24 corresponds
to day 235.5). The profiles were derived by averaging
all data from one complete dive cycle, defined as the time between
successive bottom turning points, into 2-meter vertical bins. The variable
"z" gives the nominal center depth of these bins, while the variable "pres"
contains the actual average pressure of all data within these vertical bins.
The same directory also contains two matlab programs:
example_section.m
and
set_section_id.m.
The former gives an example of how the profile
data can be used to quickly generate section plots. The latter contains
the start- and end times of the SW06 sections that are used by
example_section.m to identify the profiles that comprise a particular section.
The file
scanfish_proc_notes.txt.
gives a description of the Scanfish data processing.
Though detailed, it is written mainly for someone familiar with
Scanfish or SeaSoar processing. For additional explanations of the
processing steps mentioned in the file, see for example the data report
for our
"Finch1" Scanfish cruise off Hatteras in 2004.
Shipboard ADCP:
This CD contains the final version of the shipboard ADCP
data in matlab (.mat) format. The file "en425os_e"
contains the following variables:
depth |
1x100 |
800 |
double array |
txy |
4731x3 |
113544 |
double array |
u |
4731x100 |
3784800 |
double array |
v |
4731x100 |
3784800 |
double array |
There are 4731 profiles with 100 vertical
bins each. The bin length was 8m. "u" indicates zonal
velocity, "v" indicates meridional velocity. "txy" stands for
time, longitude, latitude, with time in decimal days (noon on
January 1 corresponds to day 0.5). "depth" gives the center depth
of the ADCP bins.
The file
en425_proc_notes.txt.
gives a description of the ADCP data processing.
Bottom depth:
Bottom depth was derived by interpolating a bathymetry "map" provided
by John Goff, University of Texas / Arlington, onto the Scanfish and
ADCP profile positions.
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