2. To determine the depth of the mixed surface layer and 
thermocline structure, 270 m. bathythermograph casts will 
be made at 30 mile intervals and before and after each 
oceanographic station except as specified below. 
3. For variability studies 270 m. bathythermograph casts 
will be made. 
a. at 10 mile intervals between stations 19 and 21, 
2 6 and 2 8 , and 3 3 and 3 7 ; 
b. at 1 hour intervals on current stations. 
4. Surface bucket temperatures and water samples for salinity 
determination are to be obtained at each bathythermograph 
observation. 
5. Bathythermograph data are to be coded and transmitted as 
per instructions from the Naval Oceanographic Office, 
Prediction Division at 0000Z, 0600Z, 1200Z, 1800Z. 
Radio address: FLE NUM WEA FAC Monterey. 
6. Current observations 
a. Occupy two 12 hour current stations, one in the 
southern section and the other in the northern section 
of the observational region. Exact location dependents 
upon weather conditions and is to be determined by 
the field party chief. Currents are to be measured 
in the mixed surface layer at 10 m. , 25 m. and thence 
at 25 m. intervals with the deepest measurement in the 
upper portion of the thermocline, while drifting rela- 
tive to a parachute drogue set at 1000 m. 
b. Plastic enclosed drift cards will be released at each 
oceanographic station and at 30 mile intervals when 
making bathythermograph casts. 
B. METEOROLOGICAL 
1. Standard marine weather observations are to be made and 
transmitted at 0000, 0600, 1200, and 1800 GMT. 
2. Radiation measurements 
a. Solar radiation is to be measured and recorded. 
C. BIOLOGICAL 
1. Surface plankton tows 
2 
