DELILAH instrument. The middle two digits refer to the location code 
described above. The last digit identifies the sensor (or channel) at that 
particular location. The sensors used were: 
Current speed in the X direction. 
Current speed in the Y direction. 
Paroscientific pressure gauge. 
Strain gauge pressure sensor. 
Boge 
Thus, a gauge number of 2503 is a DELILAH instrument, located at the 50 
position, the fifth offshore gauge on the primary cross shore subarray, and is 
the Paroscientific pressure gauge (type 3). 
The Gauge Name is used only to describe the particular gauge. It is not 
stored with either the raw time series or the FRF's summary statistics file. 
The following conventions are used: 
CM - Current meter (Either open-frame or Marsh-McBirney). 
PD - Pressure gauge to measure water Depth. This refers to the 
buried Paroscientific pressure sensors designed to measure 
setup. 
PW - Pressure gauge to measure Waves. Refers to the strain gauge 
pressure sensors to be placed on the cross-shore array. 
NYG - Current measurement, positive to the south (also known as U). 
x - Current measurement, positive offshore (also known as V). 
SLED - This word precedes the names of instruments mounted on the 
sled. 
Current meters and pressure gauges used in DELILAH are listed in Tables 
E1 and E2, respectively. The tables include gauge name, gauge number, serial 
number plots, gain, bias, and coordinates relative to the FRF coordinate 
system. The signs of the gains may differ from those listed in Appendix D. 
The signs have been adjusted to compensate for instruments being mounted 
downward. A negative gain flips the data of the channel so that they 
correspond to the conventions of: 
+Y - a southward-moving longshore current. 
+X - an offshore-moving cross-shore current. 
DELILAH array data collection 
Data were sampled at 8 Hz except for the Paroscientific sensors, which 
were sampled at 1 Hz. The primary cross-shore array had an unanticipated 4 
to 8-sec gap in the data which occurred approximately every 20 min as a result 
of the microprocessors used. The 10 current meters in the three subarrays did 
not have these data gaps. These gaps in the time series were filled with values 
of -9999 so they are easily identified. There was no way to eliminate these 
gaps. 
Appendix E Stationary Instrument Data 
E5 
