Field Notes

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Other sites visited today: Mayberry | East End | Bouldin Corn | Bouldin Alfalfa
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Gilbert Tract: 2025-01-15 00:00:00 (DOY 15)
Author: Kuno Kasak
Others: Daphne, Joe

Summary: Installing mini CH4 sensor and floating DO sensors. Removing 2nd set up Azolla decomop. samples and regular maintenance.

Daphne, Joe and I arrived 10:15AM
Weather was sunny, cool, hazy horizon and some ice in shade, not much breeze. The staff gauge read 42cm at 10:45 PST.
- Both Campbell conductivity and Meter CTD sensors out of water at low tide, Joe lowered them. The original height was 22cm below the water surface when the staff gauge read 40.5cm (15cm above muck). The muck was 18cm deep. Joe lowered the Campbell conductivity and Meter CTD sensors about 15cm so they're right above the muck layer. When the staff gauge read 40cm, the sensors were about 37cm below the water surface.
- Downloaded Song Meter Micro and changed its battery and desiccant
- Joe was setting up the mini CH4 sn 38-573-25 by boardwalk. Sampling 5 measurements every 15 minutes and saving the average.
- Joe installed minidot sn 899502 with fresh desiccant + copper screen. It is floating in a foam block.
- Kuno cleaned flux + met sensors
- Washer reservoir mostly full
- Changed 7500 for calibrations: sn 75H-2514 came down and sn 75H-2180 went up. Updated configuration file and pressure coefficients
CO2 500-> 478.3
H2O 367 -> 355
T 12.05 -> 11.78
P 102.6 -> 102.8
SS 98-> 99.7
CH4 3.2
RSS 37 -> 87
- Kuno removed 2nd set of Azolla decomposition samples. The string on the 3rd set had come loose, re-tied.
- Measured surface water conductivity
Surface, 416.8uS, 5.4C

- Arrived channel at 11.15 AM
- Water level low, tide coming in slowly.
- All cattails on bank have been trimmed
- Joe removed debris from railing
- CR6 data looks good
- Couldn't connect to ADCP at first, connected after going through "Recover Instrument" flow. Missing ADCP data 1/5-1/12 6:20
- Downloaded all CR6 data and confirmed power outage Dec 20-25

Left at 11.30 AM.

0 photos found

8 sets found

Can't check MBWPEESWGT_mixed
Can't check MBEEWPSWEPGT_cam
16 GT_met graphs found