Barry Lesht
Environmental Research Division
Argonne National Laboratory
9700 S. Cass Ave.
Argonne, IL 60439
Phone: 630/252-4208
FAX: 630/252-2959
Email: bmlesht@anl.gov
ARGONNE TRIPOD DATA 4/2/98 - 4/30/98
STATION 98-TRI, LAT 42 39.90 LON 87 44.89, OP No. N1998092.01
Explanation of Columns in the Data Set
BURST Sequential number of data burst
MON Calendar month (local time = CST)
DY Calendar day (local time = CST)
TIME Local time (CST)
JULDATE Ordinal fractional day (UTC) of beginning of burst
E Eastward component of mean horizontal current
N Northward component of mean horizontal current
SPD Mean horizontal current speed
WOVm SQRT(2*(sigU**2+sigV**2)) - Estimated wave orbital velocity
sigU and sigV are standard deviations of horizontal current
components during the burst
TEMP Water temperature
DEPTH Water depth (net of average atmospheric pressure)
SIGDP Standard deviation of variations in water depth during burst
WHT Range of variations in water depth during burst
WOVp Wave orbital velocity estimated from pressure measurement
by using linear wave theory
TSM Estimated total suspended material from Transmissometer1
TSM = 2*(ATTN1-0.5)
ATTN1 Optical attenuation - transmissometer 1
CVX1 Coefficient of variation of transmissometer signal
ATTN2 Optical attenuation - transmissometer 2
CVX2 Coefficient of variation of transmissometer signal
Fundamental Data Sources
Parameter Sensor Serial Number HeightAboveBottom
Current Velocity Marsh-McBirney512 282 74 cm
Transmissometer1 SeaTech (25cm) 24 93 cm
Transmissometer2 SeaTech ( 5cm) 327 93 cm
Pressure Paroscientific 6486 73 cm
Temperature AnalogDevices 204 95 cm
After a two-minute warm-up period, all sensors were sampled at 4Hz for 5 minutes
every half hour. Means, standard deviations, and covariances of the basic
data were recorded.
Tripod orientation (compass, tilts) were recorded once per day.