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 10/28/98 - 12/1/98
STATION 98-TRI2 LAT 42 52.18 LON 87 42.41, OP No. N1998301.01

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
TEMP1       Water temperature at 0.98 meters above bottom (+/- 0.5 degC)
TEMP2       Water temperature at 10.0 meters above bottom (+/- 0.5 degC)
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)
ATTN1       Optical attenuation - transmissometer 1
CVX1        Coefficient of variation of transmissometer signal
TSM2        Estimated total suspended material from Transmissometer2
             TSM = 2*(ATTN2-0.5)
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
Temperature1       AnalogDevices            220              98 cm
Temperature2       AnalogDevices            221            1000 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 four times per day.