Barry Lesht (modified 12/15/1998)
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 7/23/98 - 8/24/98
STATION 98-TRI2 LAT 42 52.18 LON 87 42.41, OP No. S1998204.01
Explanation of Columns in the Data Set
BURST Sequential number of data burst
MON Calendar month
DY Calendar day
TIME Time (UTC)
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 at 1.14 m above bottomfrom Hydrolab DatasondeII
COND Conductivity at 1.14 m above bottom from Hydrolab DatasondeII
DEPTH Water depth to pressure sensor (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
TSM1 Estimated total suspended material from Transmissometer1
TSM = 2*(ATTN1-0.5) - No fouling correction applied
ATTN1 Optical attenuation - transmissometer 1
CVX1 Coefficient of variation of transmissometer signal
TSM2 Estimated total suspended material from Transmissometer2
TSM = 2*(ATTN2-0.5) - No fouling correction applied
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) 25 93 cm
Transmissometer2 SeaTech (25cm) 24 1000 cm
Pressure Paroscientific 6486 74 cm
Temperature Hydrolab 6983 114 cm
Conductivity Hydrolab 6983 114 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 six times per day.
Hydrolab data are grab samples (not averaged) taken 15 minutes after indictated
times.