Field Notes

<--2012-02-01 09:00:00 | 2012-02-09 13:30:00-->
Other sites visited today: Vaira | Tonzi
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Tonzi: 2012-02-01 09:00:00 (DOY 32)
Author: Joe Verfaillie
Others: Siyan

Summary: Tram down - fixed, floor solar power low, reconnected north sap flow serial, other sap flow stations down.

Tonzi
2012-02-01

I arrived about 9am with Siyan. It was overcast, wet and cold. There were puddles on the road on the way up. It was kind of misty and wet. The grass looks greener, but there is still a lot of damage from the long dry period.

The tram was not running. Its battery was fine. I restarted the data logger and it seemed okay, but when tried to start up it couldn’t get away from the parking spot, I gave it a shove and it went down the track. But it got stuck again. I discovered that the cotter pin had broken and been lost out of the north drive wheel. I replaced the cotter pin with some wire and the tram ran correctly. I need to replace both cotter pins with new steel ones.

The floor system was down. The solar system was reading less than 10V then cut off. The batteries jumped back up to better than 12V. I tested individual components of the system. The sonic and IRGA take about 0.7A, the computer 1.4A and the screen about 0.9A. When the screen is idle it pulls less than 0.1A. The power supply for the z-cam pulls about 0.1A. I should swap those out with the new ones.

Later in the day there was a little more solar power and I restarted the system.

The North sap flow station had been running okay - the serial cable was just loose inside the box. I uploaded a new program to just read the bole temps, soil temps and soil moistures every 10 secs and save 30 min averages. The first 6 soil temps are dead. I don’t understand the wiring for the bole temperatures.

The South sap flow station had been reporting data this morning, but the battery was dead when I check on it. I brought the battery in. The west sap flow station also had a low battery. I brought that battery in too.

We took some fence posts and insulators to Varia.

Field Data

No tank data

Well Depth

Date	Location	Depth (feet)
2012-02-01	TZ_floor	29.4
2012-02-01	TZ_road	38
2012-02-01	TZ_tower	34.3

No TZ Moisture Point data found

No VR Moisture Point data found

No TZ grass heigth found

No VR grass heigth found

Tree DBH

Date	Tag#	Reading (mm)
2012-02-01	1	17.4
2012-02-01	102	9.4
2012-02-01	2	16.4
2012-02-01	245	20.2
2012-02-01	3	14.8
2012-02-01	4	19.5
2012-02-01	7	15
2012-02-01	72	7.2
2012-02-01	79	6.7
2012-02-01	8	6.6