Field Notes

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Gilbert Tract: 2024-10-10 08:30:00 (DOY 284)
Author: Daphne Szutu
Others: Carlos

Summary: Downloaded temperature profile data, installed new CTD off of the boardwalk, measured camera height, ADCP cable chewed - removed for repair

2024-10-10
Gilbert Tract

Carlos and I arrived at 8:30 PST. It was a nice fall day, mild with a warm sun. Tide was low-ish and the staff gauge read 50cm at 9:10 PST.

We got started wading into the water to download data at Robert and Kuno’s three thermocouple profiles in the wetland. I downloaded thermocouple and IRT data at all three CR10X stations, and downloaded the two miniDOTs. The CR10X data looked reasonable. All lithium battery packs had 5/5 LED status lights. The water was about knee/thigh height on me.

We installed the CTD sn H21G00003238 on the fence post in the middle of the pond, just off of the boardwalk walkway. I also took the opportunity to check the Campbell conductivity sensor as part of its routine check—the orifice was clean. When the staff gauge read 50cm, the CTD and the Campbell conductivity sensor were both 40cm below the water surface.
Carlos secured the sensor cables against the boardwalk. I wired the sensor in and checked that its data looked reasonable.

I downloaded met, cam, and flux data. I downloaded the Song Meter Micro files and changed its desiccant, but did not check its clock this time. Carlos cleaned flux and rad sensors and topped off the wash reservoir.

The phenocam is 540cm agl – might be important for view angle.

I measured the surface water conductivity off of the boardwalk walkway.
Surface, 528us, 18.8C

The 7500 read 431ppm CO2, 701mmol/m3 H2O, 22.8C, 101.5kPa, 100SS – 102 after cleaning
The 7700 read: 2.15ppm CH4, 33RSSI - 86 after cleaning

We got to the channel around 10:10 PST. The status lights on the solar charge controller were alternating green/yellow/red. There were no lights on the ADCP adapter or the CR6. I disconnected and reconnected some of the wires from the Sunsaver to restart it. I connected to the CR6 and downloaded its data, which looked ok although we’re missing the last 2 days of data. I was not able to connect to the ADCP.

We pulled it up out of the water to inspect its cable. Most of it is in conduit, and it all seemed fine until Carlos exclaimed, “Oh my god, there’s smoke!” There was a cut in the underwater, uncovered portion of cable which was indeed smoking or steaming. I removed the ADCP sn SL2149007 and its cable to bring back to the lab.

We left at 11:00 PST.

0 photos found

8 sets found

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