Field Notes

<--2012-09-20 10:30:00 | 2012-10-04 08:30:00-->
Other sites visited today: Sherman Island | DWR Corn | West Pond | Twitchell Rice
Phenocam link: Searching...

Mayberry: 2012-09-27 10:30:00 (DOY 271)
Author: Joe Verfaillie
Others: Sara, Cove, Laurie

Summary: Collected data, water samples, moved truck, removed upper water DO sensors due to -INF readings.

Mayberry
2012-09-27

I arrived about 10:30 with Cove, Sara and Laurie. It was clear, sunny and warm with just a little breeze from the west. The tules and cattails have begun to yellow. The berm between the tower and the autocam seems to degrade and subside. It’s not a threat yet, but we need to keep an eye on it.

Cove and Laurie collected data, Sara collected water samples and I moved the truck.

The permanent tower read:
CO2 = 402ppm, H2O = 680, AGC = 43.8 T = 23.5, CH4 = 2.1ppm, RSSI = 62

After cleaning the 7700 RSSI was 65. Spider webs were cleaned from the sonic path. The reservoir was almost full.

The upper DO water sensors was still reading –INF. We brought it in for a checkup. The CO2 probe came loose and was refastened at 10cm below the water surface.

I moved the portable tower from Location 1 to Location 2. At Location 1 the sonic heading was off by about 25 degrees to the east. At location 2 I aligned the sonic to true north. In the new location the system readings were:
CO2 = 400ppm, H2O = 770, AGC = 37.5, CH4 = 2.0ppm, RSSI = 60

We did not clean the 7700 mirrors. The wash reservoir was about a quarter low – I topped it off. I cleaned spider webs and dirt of the 7500 spars.

3 photos found

20120927MB_PortableSonicHeading.jpg ( 2012-09-27 11:00:24 ) Full size: 1920x1440
Heading of the protable tower sonic