each of the five sensors in the mobile OBS array is tabulated along with the 

 sensor distances from the bed, measured before and after the run. 



Identification of marginal data sets 



The carriage was used in a total of 212 runs; however, for 44 of the runs 

 no OBS data were collected. For three of the 212 runs no wave gauge data 

 were collected. In general, during the runs for which no OBS data were 

 collected, the sensors were being calibrated, or the OBS were being prepared 

 for special tests. 



The usefulness/validity of the data from several of the runs may be ques- 

 tioned in instances where problems were encountered. However, sections of 

 these marginal data files may be recoverable. Table 7-5 identifies these 

 marginal data sets and the problems encountered. 



Table 7-4 



OBS Data Ledger File 



RUN IDENTIFICATION : A1314A0B 



Test Number : ST_20 

 Wave File :A1209A 

 Description : Acoustic Profilers 



TEST CONDITIONS 

 Wave Height : 0.6 m 

 Wave Period : 3.0 sec 

 Wave Type : REGULAR 



START TIME : 14:44:00.0 

 STOP TIME : 14:50:00.0 



INSTRUMENT POSITIONS 

 OBS Array: 101.50 ft 

 Wave Gauge : 101 .67 ft 



AAA BBB 



Mean (g/f ) 3.38 2.77 



STDDEV(g//) 1.54 1.14 



SENSOR DISTANCES FROM THE BED 

 Initial (cm) 6.9 10.7 



Final (cm) 6.9 10.7 



CCC 



DDD 



EEE 



2.41 



1.89 



1.61 



0.97 



0.89 



0.77 



14.5 



22.1 



29.7 



14.5 



22.1 



29.7 



Chapter 7 Sediment Suspension Measurements from a Platform 



133 



