Field Notes

Gilbert Tract: 2024-01-30 10:00:00 (DOY 30)
Author: Daphne Szutu
Others: Robert

Summary: Warm day, storm prep--need replacement turnbuckle, replaced dfPAR enclosure, downloaded bird microphone data

2024-01-30
Gilbert Tract

Robert and I arrived at 10:00 PST. It was unseasonably warm, sunny, and calm today, the calm before storms arrive tomorrow and Sunday. Tomorrow's storm forecast includes 2-3cm of rain and winds up to 10 m/s (20+mph). The staff gauge read 76cm at 10:25 PST.

Robert noticed the first two pier segments are getting farther away from each, making a >10cm gap.

Inside the met box was a live wasp struggling in a spiderweb. I used a dead reed to remove the spiderweb and move the wasp outside the box. I downloaded met, cam, and USB GHG data. I changed the eddy clock +45sec and restarted logging afterwards. There were some ants in the met box so I left them a few mothballs.

Robert refilled the empty wash reservoir; I checked the 7700 wash settings and changed the wash RSSI threshold from 40% to 30% and changed the spray from 30sec to 15sec to match our other sites.

I downloaded the Song Micro Meter (wildlife recorder), which had about 50 files (8Gb) on its microSD card. There’s 4 hourly files each day, 2 from near dawn and 2 from near dusk. There was a bit of condensation inside so I put in a fresh dessicant minipak. We removed the recorder and will install it at Hill Slough later today.

I installed a replacement dfPAR enclosure and connected the motor and proximity sensor to the screw terminal leading to the CR10X. I mounted the PAR sensor and leveled it. The real-time data looked reasonable.

Robert cleaned flux and rad sensors, retrieved the miniDOT for download, and swapped its desiccant. He also used the handheld YSI probe to measure the surface water conductivity off of the pier.

Sample, Temperature-compensated conductivity, Temperature
Surface, 720 uS, 11.2 degC

The 7500 read: 504ppm CO2, 602mmol/m3 H2O, 18.9C, 101.8kPa, 99SS -- 100 after cleaning
The 7700 read: 2.78ppm CH4, 30RSSI – 80 after cleaning

Robert checked the tower's two turnbuckles. He tightened the SE turnbuckle slightly, but the hook bolt sheared on the NW turnbuckle, making the turnbuckle useless. We connected the tower and the fence post for now using a carabiner and a u-bolt from the spare hardware bag. I’ll bring a spare turnbuckle next time. We also moved the upper boardwalk down lower on the scaffolding (below the canopy height) so that it wouldn’t catch in the wind in the upcoming storm.

We got to the channel at 10:57 PST to download Flo’s data. I downloaded data, reset its clock, and restarted logging. Hardly any drops/spikes in the depth data.

We left around 11:05 PST.

0 photos found

7 sets found

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