Field Notes

Hill Slough: 2023-12-07 16:05:00 (DOY 341)
Author: Carlos Wang
Others: Ari

Summary: Regular field maintenance, EXO box clasp broken, EXO brush fell off

Ari and I arrived at the field around 4:05pm after Dutch Slough sampling. It was breezy and chilly. The tide was low and we saw few tules.

[DATA DOWNLOAD]
I downloaded the GHG, PICAM, and MiniDOT data. Joe's laptop does not have HS MET configuration so I did not download MET data.

[EXO]
We pulled EXO sensor out and checked the bottom. The sensor looks ok with lots of shrimp. Ari noticed that the EXO brush fell off and is nowhere to be found, hence, the fdom reading was off. The wiper is in place and working. We raised the EXO sensor up by 2 chain links (~6cm).

The upper enclosure clipper at the EXO box also broke, and we taped it.

Joe or Daphne is going to replace the brush and download MET data next time.

[MiniDOT]
I downloaded the MiniDOT data. There was no spare desiccant, so I put the old one back in.

[LI7500/7700]
7700 water tank was completely empty and sensor was dirty.

Pre cleaning:
CO2 (415 ppm), H2O (462 mmol/m3), T (13.9 C), P (102.3 kPa), SS (101), RSSI (43.5), CH4 (2.01 ppm)

After cleaning:
SS (103), RSSI (79)

[Sipper and surface data]
Porewater, 9.1 mS, 12.0 C
Surface, 6.75 mS, 11.6 C

[Staff gauge]
3.82 ft @ 4.53 pm

We left the field at around 5 pm and got treats from Starbucks :)

5 photos found

20231207HS_Birds.jpg ( 2023-12-07 16:11:24 ) Full size: 1920x1440
Wading birds at low tide

20231207HS_BrokenClasp.jpg ( 2023-12-07 16:08:39 ) Full size: 1440x1920
Clasp came off of enclosure holding CR23X and EXO adapter

20231207HS_TapedClasp.jpg ( 2023-12-07 16:09:40 ) Full size: 1440x1920
Taped clasp to enclosure after it came off of enclosure holding CR23X and EXO adapter