Field Notes
<--2010-08-11 11:45:00 | 2010-08-29 11:44:00-->Other sites visited today: Sherman Island
Twitchell Rice: 2010-08-17 09:40:00 (DOY 229)
Author: Joe Verfaillie
Others: Jaclyn, Dennis, Brother, Father
| Twitchell 8/17/2010 Arrived about 9:40am PST with Dennis and Jaclyn and Dennis�s brother and father. It was cool clear and sunny with an moderate wind from the west. The water level in the field is just above the top of the well pipe. Rice looks good. The LGR seemed to be running okay: 8:48PST, 26.66C, 144.24Torr, 13.983usec, 10Hz, 1.8571ppm, 15013ppm, 375.67ppm I removed the FGGA LGR (sn 09-0010) belonging to Frank and replaced it with our FMA LGR (sn 08-0114). After replacing the LGR in slow flow mode read : 10:05PDT, 19.77C, 143.07Torr, 16.934usec, 1Hz, 1.876ppm I changed it to 10Hz high flow and set the clock to PST and restarted it to save the settings. I had to crank the bypass valve nearly all the way closed for the diaphragm pump: 10:17PST, 24.11C, 143.06Torr, 16.117usec, 10Hz, 1.848ppm After swapping the CR1000 flash card, I changed the CR1000 program to agree with the change from the three-channel LGR to the one-channel LGR. I swapped the LI7500 for calibration. Serial number sn 1594 came off and sn 0035 went on. I powered down the LI7550, removed the USB memory and restarted it. This seemed to fix the problem with the analog channels. All channels were active and reasonable. I downloaded all the data from the CR23x before changing its program to add the DO sensor without agitator. The new program is version 106, has the DO sensor in 23X channel 10 DIFF. An extra column has been added to the end of the final data with the mV output from the DO sensor. The output dropped from about 32mv in air to 13mv in the water. The sensor is on a stake near the well. I copied the data from the computer. I cleaned the mirrors on the LI7700. |
4 photos found
20100817TW_Field.jpg ( 2010-08-17 10:54:02 ) Full size: 3648x2736
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20100817TW_Jaclyn.jpg ( 2010-08-17 10:54:38 ) Full size: 3648x2736
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20100817TW_Radiometers.jpg ( 2010-08-17 10:53:58 ) Full size: 3648x2736
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20100817TW_Rice.jpg ( 2010-08-17 11:23:48 ) Full size: 3648x2736
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6 sets found
12 TW_met graphs found
No data found for TW_flux.
Can't check TWSI_mixed
Can't check SIMBTWEE_met
No data found for TW_cam.
Can't check TATWBABCSB_cam