Water Analysis Measurements

WATER ANALYSIS MEASUREMENTS
Queen Anne's Revenge

Vessel: R/V Snap Dragon
Position: East Screw Eye

Date: 15 OCT 1998
Technicians: D. Monaghan

LOCAL TIME	BOTTLE #	DEPTH [FT]	TEMP [C]	REFRACT ppt	SCT METER ppt	COND uMhos/cm2	pH	DISSOLVED OXYGEN PPM	TIDE STATE	REMARKS
10:20	6A	0.5	24.0	35.0	34.0	48,100	8.20	6.3	EBB	Weather: Sunny, clear, warm, light N wind calm sea
10:45	5E	20.0	23.8	35.0	33.2	49,500	8.18	6.2	EBB
11:47	6A	0.5	23.5	35.0	33.0	49,000	8.08	6.8	EBB
11:50	2E	20.0	23.5	35.0	33.5	49,800	8.09	7.0	EBB
12:51	6A	0.5	23.5	35.0	33.0	48,500	8.07	6.8	SLACK
13:05	5E	20.0	23.5	36.0	34.0	50,000	8.13	7.1	SLACK
14:02	6A	0.5	23.5	35.0	33.0	48,000	8.08	7.1	SLACK
14:04	5E	20.0	24.0	36.0	34.0	50,000	8.14	7.2	SLACK
NS									FLOOD	NS=No Sample
15.11	6A	0.5	24.0	35.0	33.0	49,000	8.12	7.1	FLOOD
15.30	5E	20.0	24.0	36.0	34.2	OS	8.08	6.8	FLOOD	OS=Off Scale

NOTES:

FIELD METERS USED WERE: YSI Model 33 SCT Meter; YSI Model 57 Oxygen Meter; Fisher Accumet Model 955 mini pH meter; Leica # 10419 Refractometer
Calibrations were done before the first sample of the day and checked again at 13;05. No drift was noticed pH was calibrated using a buffer of 7
Dissolved Oxygen was air calibrated and salinity corrected
Surface sample was taken from SNAP DRAGON; Bottom temps are not: the temp was taken when sample was run, not when collected
All samples were analyzed within 5 minutes after being brought to boat
Sample frequency was dependent on divers schedule. When possible the surface and bottom samples were taken close to the same time
Sampling frequency was also changed to longer intervals after data was looked at and very little changes were noticed over time and tide state
Samples were collected during ebb, slack and flood tidal conditions