Field Notes

<--2020-07-07 13:30:00 | 2020-07-31 09:30:00-->
Other sites visited today: East End | Bouldin Corn | Bouldin Alfalfa
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West Pond: 2020-07-21 09:10:00 (DOY 203)
Author: Daphne Szutu
Others: Ariane, Metta, Erin

Summary: Regular data collection/cleaning, removed miniDOT from tower to bury underground, water samples for Ariane

2020-07-21
West Pond

Ariane, Metta (visitor from UCB), Erin (visitor from UCSC), and I arrived at 9:10 PDT. It was windy, sunny, and mild day. The water level is lower than last time. The staff gauge read 31cm. The miniDOT was not touching the water.

Ariane and Erin took water samples at the tower and at the 0.5 footprint site. Surface waters were collected only at the tower because there wasn't standing water inside the wetland. We took porewater samples at 10, 20, 30, 40 and 50 cm. We installed an additional Sedpoint at 60 cm depth and buried a miniDOT sensor at 20 cm at the 0.5 footprint site.

Readings at the tower (surface water)
Conductivity: 255 uS
Salinity: 0.15 ppt
pH: 6.60
T: 17 C

Porewater average:
Conductivity: 331 uS
Salinity: 0.19 ppt
pH: 6.09
T: 18 C

YSI DO readings are very unstable lately, I need to change the galvanic sensor to see if they get better.
The inlet had no water flowing out, and the wetland was dry again, I asked Bryan to reprime the siphon one more time before the dry down.

I collected met, camera, USB GHG, and miniDOT data. I cleaned flux and rad sensors and changed the desiccant from the water level sensor and the miniDOT. The wash reservoir was Â¼ full; I refilled it.

I removed miniDOT sn 899502 from the tower and gave it to Ari to bury it in underground in the wetland. I had brought a new miniDOT (sn 180871), but couldnâ€™t set it up because sneakernet did not have java installed.

When the 7550 clock was 8:44, I reset it to 8:46. I reset the 7550 box, and all seemed ok.

LI-7500 readings:
CO2 404ppm
H2O 653ppm
T 20.4C
P 101.1kPa
SS 98--> 100
LI7700 readings:
CH4 2.0ppm
RSSI 40--> 74 after cleaning

Metta and I left at 11:00 PDT to visit East End. Ariane and Erin left at 12:15 PDT.

0 photos found

8 sets found

Can't check WP_DO
1 WP_DO graphs found