- 264: soil, Site all, Sun 30-Apr-2006 11:51:24 PDT, Lent gravimetric/TRIME to Berkeley/Stanford de-install team
This morning we lent the TRIME and gravimetric sampling system to the students soil moisture tear-down team. This team consists of Rica, Megan Bela (applied to NCAR summer intern program), Megan D., Bob Street and Frank Ludwig. Brad Agee joined one of their teams of 3 persons. They plan to de-install those soil moisture sites that during a previous visit have shown to give invalid values. Later, after the EOP ends, they will begin uninstalling working sensors. The remainder will be gathered tomorrow.
They will be utilizing the ISFF oven for the gravimetric samples. In addition, equipment borrowed from Inyo County Water Department by that team will be used, along with larger Inyo County ovens.
The Stanford/Berkeley team has become quite good at utilizing the equipment and was thankful for the help of ISFF throughout.
- 261: soil, Site all, Sat 29-Apr-2006 17:08:36 PDT, Trime Measurements, etc.
Took TRIME readings and soil samples at all tower locations.
Central: 1329-1345 local time at site.
0-3cm sample
Total Wt.= 128.1g - container wt. 53.5g
Net Wt. = 82.4g w/o container/rocks/roots
container/tare/wet wt/dry wt(without tare)
e1 1.4,25.1,22.5
e2 1.6,25.0,22.7
e3 1.5,23.2,21.8
3-6cm sample
Total Wt= 136.1g - container wt 26.8g
Net Wt = 108.6g w/o container/rocks/roots
container/tare/wet wt/dry wt(without tare)
d1 1.3,35.9,30.2
d2 1.5,38.5,32.2
d3 1.5,34.7,21.8
TRIME DATA
Sample #,Moisture%,TDR
1,36.4,2.0
2,36.5,1.0
3,36.0,1.0
4,47.8,5.0
5,48.3,5.0
6,48.6,5.0
7,41.6,4.0
8,41.5,4.0
9,41.6,3.0
South: 1445 - 1507 local time at site
0-3cm sample
Total Wt = 171.5g - Container wt 54.2g
Net Wt = 117.2g w/o container/rocks/roots
container/tare/wet wt/dry wt(without tare)
c1 1.5,35.4,36.9
c2 1.4,36.2,37.6
c3 1.5,40.2,41.5
3-6cm sample
Total Wt. = 118.6g - Container Wt 26.8g
Net Wt = 85.8g w/o container/roots/rocks
container/tare/wet wt/dry wt(without tare)
b1 1.6,28.5,29.8
b2 1.3,28.4,29.7
b3 1.5,27.7,29.0
TRIME DATA:
Sample #,Moisture %,TDR
1,5.5,62.0
2,5.5,62.0
3,5.5,62.0
4,2.4,63.0
5,2.4,63.0
6,2.4,63.0
7,2.9,63.0
8,2.9,63.0
9,2.8,63.0
WEST: 1531 - 1545 Time on site
0-3cm sample
Total Wt = 173.7g - container wt 48.4g
Net Wt. = 108.4g w/o container/rocks/roots
container/tare/wet wt/dry wt(without tare)
a1 1.5,36.9,38.4
a2 1.4,35.0,36.5
a3 1.4,36.1,37.6
3-6cm sample
Total Wt. = 103.3g - Container Wt 29.3g
Net Wt. = 73.9g w/o container/rocks/roots
container/tare/wet wt/dry wt(without tare)
f1 1.5,25.7,26.8
f2 1.5,24.7,25.9
f3 1.5,24.3,24.1
TRIME DATA:
sample #, moisture %, TDR
1,3.6,63.0
2,3.5,63.0
3,3.5,63.0
4,4.0,64.0
5,4.2,64.0
6,4.1,64.0
7,2.9,64.0
8,2.8,64.0
9,2.8,64.0
In oven at 1630 local time
- 248: soil, Site all, Wed 26-Apr-2006 15:09:50 PDT, Soil Sensor Photos
Today I took pictures of the soil sensors at each site. There are 3 photos for each site, one each from the SW, N, and SE, respectively.
- 247: soil, Site south, Wed 26-Apr-2006 14:59:36 PDT, Trime Measurements, Gravimetric
25 April, 2006
South Site
Sample taken at 1220PST
Samples placed in oven at 1300PST
0-3 cm 154.8-48.7 = 106.1g net
Wet Dry
D1 30.5 30.2
D2 33.7 33.5
D3 41.9 41.5
3-6 cm 143.0-29.6 = 113.4 net
Wet Dry
E1 39.6 38.3
E2 37.8 36.4
E3 35.0 33.6
TRIME measurements
SW of soil sensors.
1 = 2.3
2 = 2.3
3 = 2.3
N of soil sensors.
4 = 3.7
5 = 3.8
6 = 3.8
SE of soil sensors.
7 = 2.9
8 = 2.9
9 = 3.0
- 237: soil, Site central, Mon 24-Apr-2006 14:49:36 PDT, Tsoil Coefficients, etc.
24Apr06, 13:40PDT, Central
Greg has noticed that the Tsoil readings have appeared quite low during the
entire experiment. Steve Oncley reviewed the readings and agreed. Discussion
with Steve Semmer suggested the possibility that the coefficients in the logger
could be incorrect, so we checked:
Sensor Installed per label on cable= STP97001, same sensor as spreadsheet
indicates it should be.
Coefficients were exactly as what the 'excel-spreadsheet' said they should be:
Tbl4-Location Value Spreadsheet
30 -244.0 -244
31 +235.89 235.89
32 +7.6499 7.65
The spreadsheet file is in/called:
$ASTER/projects/TREX/doc/...
-rw-r--r-- 1 aster users 31744 Apr 6 16:00 radiationinfo.xls
Re: wiring
A subsequent check and the wires appeared OK. I did notice that the E3
excitation seemed a bit odd to me: 4-each 5mS pulses spaced at 5mS apart
and at the correct 2.1VDC.
- 236: soil, Site central, Mon 24-Apr-2006 14:39:55 PDT, Trime Measurements, Gravimetric
24Apr06, 13:30, Central
~14:15PDT soil sample taken
Definitely moist from rain yesterday, so good opportunity. Seems quite well
formed and clay-like except for the 'loose alkaline top.'
0-3cm 125.0-45.1 = 79.9gm
e1 25.8 20.0
e2 15.8 12.4
e3 18.5 14.4
3-6cm 169.8-73.1 = 96.7gm
d1 20.2 14.9
d2 21.3 15.7
d3 18.5 13.6
14:00PDT Trime Greg took these readings:
Sample %Vol TDR
1 39.8 24
2 42.3 13
3 39.8 0
4 39.6 24
5 42.1 12
6 39.8 0
7 39.6 24
8 42.1 12
9 39.1 0
10 38.2 22
11 38.7 22
12 39.3 22
All 4 sets of 3 readings had good penetration at 45-deg angle in the vicinity
of the station soil sensors.
#1-3, #4-6, #7-9 were in separate locations. Because of the funny 0 TDR
values as the measurements proceded, the last set #10-12 were taken.
Ground definitely has the moisture in it.
- 235: soil, Site west, Mon 24-Apr-2006 12:07:11 PDT, Trime Measurement, Gravimetric
24Apr06, 10:20, West
~10:45PDT soil sample taken
Some pebbles in 0-3cm, nothing in 3-6. Rain yesterday, so good opportunity.
0-3cm 153.8-53.7 = 100.1gm
b1 28.0 27.7
b2 32.0 31.6
b3 26.6 26.1
3-6cm 136.5-27.0 = 109.5gm
c1 35.7 34.5
c2 36.7 35.5
c3 36.8 36.8
10:20PDT Trime Brad took these readings:
Sample %Vol TDR
1 5.6%
2 5.8
3 5.9
4 4.5
5 4.5
6 4.6
7 5.4
8 5.5
9 5.4
All 3 sets of 3 readings had good penetration at 45-deg angle in the vicinity
of the station soil sensors. #1-3 were in bare ground east of sensors,
#4-6 'mixed' west of sensors, #7-9 bare, south of sensors.
- 217: soil, Site south, Thu 20-Apr-2006 19:16:19 PDT, Trime Measurement, Gravimetric
20Apr06, 18:00-18:20, South
18:0PDT soil sample taken
Some roots in the 0-3cm sample, and pebbles in both.
0-3cm 164.0-79.5=85.5gm
c1 26.3 26.1 = 0.2gm
c2 26.5 26.3 = 0.2
c3 23.6 23.4 = 0.2
3-6cm 160.9-44.9=116gm
b1 28.6 28.0 = 0.6
b2 28.6 28.0 = 0.6
b3 35.2 34.5 = 0.7
11:40PDT Trime:
Sample %Vol TDR
1 2.9 64
2 2.9 64
3 6.4 62
4 6.5 62
5 6.9 46
6 7.0 46
All 3 sets of 2 readings had good penetration at 45-deg angle in the vicinity
of the station soil sensors.
Measurements 1,2 were in a very dry, loose open area.
#2,3 were in an open area under an old dead grass (clipped off to ground),
or and almost 'licen' patch.
#5,6 were taken near and towards a clump of grass under a sage bush.
- 213: soil, Site central, Wed 19-Apr-2006 19:41:43 PDT, Trime Measurement, Gravimetric
19Apr06, Central
12:20PDT soil sample taken
Some roots in the sample.
0-3cm 126.0-79.3=46.7gm
e1 11.6 10.6
e2 15.2 14.0
e3 14.9 13.6
3-6cm 151.8-73.1=88.7gm
d1 20.7 16.1
d2 16.1 12.5
d3 20.6 15.9
11:40PDT Trime:
Sample %Vol TDR
1 42 16
2 41.7 16
3 44.4 13
4 45.1 13
5 37.2 15
6 36.7 15
All 3 sets of 2 readings had good penetration at 45-deg angle in the vicinity
of the station soil sensors.
Measurements 5,6 were taken closer to a bunch of grass on the north side.
- 210: soil, Site west, Tue 18-Apr-2006 17:45:59 PDT, Trime Measurement, Gravimetric
18Apr06, West
16:23PDT soil sample taken
Yuck, very dry and lots of gravel. The 0-3cm had a large 'rock' in it.
0-3cm 169.7-45.1 = 124.6gm
b1 30.6 30.2 = 0.4
b2 21.5 21.2 = 0.3
b3 41.0 40.1 = 0.9
3-6cm 191.7-79.5 = 112.2gm
c1 29.5 28.6 = 0.9
c2 17.2 16.8 = 0.4
c3 32.8 31.8 = 1.0
16:00PDT Trime:
Sample %Vol TDR
1 6.9 64
2 6.8 63
3 5.0 63
4 5.0 63
5 9.6 63
6 9.6 63
1,2 didn't have 100% penetration, with ~3/4" of the top exposed.
3,4 was in a more open area, and had the same problem as above except I
'cheated' and moved a bit of gravel around the top.
5,6 had good penetration and was closer to a bunch of grass, ~8" away
with the 45-deg 'slant' toward it.
- 206: soil, Site west, Tue 18-Apr-2006 15:10:24 PDT, TP01 wiring, possible fix
18Apr06, 15:20-15:45
TP01 wiring harness swapped in logger.
The 'existing' harness had a problem with the +10V regulator output
needed for the heater. I confirmed that the spare worked in the lab by
tying the '12Sw.Control' line too +5 and observed the 10V on pin-8. At
west the same test failed.
Speculation is that the outage since 31Mar06 may be fixed.
It's possible that when the Xbee radio was installed in place of the Xstream
that the flimsy regulator wiring in this harness may have broken or
become intermittent. We'll see....
Poulos, Militzer - West site visit 1600 LT Apr 17
Last night: 17Apr06
I beeped the wiring to confirm continuity as shown below and tried checking
the output of the regulator but that proved very strange after tying the
supply into +12: I could have sworn I saw 3.5V on Analog Ground....eeek!
The wiring of TP01 inside the logger is:
CR10 Color Bulkhead Amp-9
4H White 1
4L Green 4
AG Black/Bare 7,9
5H Brown 3
5L Black 2
Sw.+12 'Brown' regulator inside heat shrink, +10 to pin-8
Gnd Black 7,9
CR10 Other wiring:
C7 = Switched 12 Control
- 184: soil, Site south, Thu 13-Apr-2006 13:16:42 PDT, Updates on Echo/Qsoil negative at south
These notes will cover a few days...
Now that we can plot the data more clearly, the soil moisture at south has been reporting negative values the entire project.
13Apr06
Setup spare logger and 'south' soil with spare Echo in base. This showed roughly 350+ mV in extremely dry soil. When I tried the probe in soil sample from central it rose to ~1V and consistent with what that station shows.
At south I tried the spare probe with the station logger with the data scope again. This time I was more prepared to record the signal properly which was not the case yesterday due to wind/connection issues. Today both probes showed about 380mV or roughly 2.5% per the 'standard' calibration. I also reproduced this with the spare logger. I then dumped some water in the 'sample soil' and watched the spare probe go up to ~700mV roughly = 16%, but this seems very low for what was actually in the box. I also reproduced this off-line with the station logger.
CONCLUSION: my guess is the station Echo probe / logger are working fine. The soil there appears to be different perhaps because of excess sand or salts (or less than at central). As a result the standard calibration is probably not correct (refer to Decagon's literature which mentions this issue)...ie don't believe the reported values!
We will bring sample containers of representative dirt from all 3 sites back to Boulder for later evaluation.
12Apr06
Checked Echo/logger at south
E2 excitation - per data scope is getting up to about 2500mV, and reading is at ~50mV. Appears to confirm the logger excitation is going high enough.
Soil Sample - taken at both south and central. Central was definitely much more moist, but to the untrained eye the soil itself appeared similar.
Spare Echo probe comparison - The signal from both the installed sensor and the spare inserted in the 'sample soil bucket' were the same: roughly 25mV raw and -40% per the logger message. This reported value seemed a bit low per the above, so will try testing in the base tomorrow.
11Apr06
Rough comparison of Echo Probes between south and central per meter.
Wiring at south was OK, although the input wire on logger 11H channel was a bit loose and needed a slight tightening.
South: 139mV at highest
Central: 300-350mV at highest
Excitation is supposed to be 2500mV and the readings roughly 10-40% of that per the manual. The slow meter was unable to grab a proper 'max' of the excitation voltage on E2 of the logger.
- 163: soil, Site south, Sun 09-Apr-2006 12:35:29 PDT, gravimetric soil moisture
Took soil sample at south at ~10:20 PDT, April 9
Taken in 'bare soil' similar to where probes appear to be. There were some small pebbles in the batch; removed before weigh-n-bake
0-3 cm
Total weight = 157.1 - 45.0 gm = 112.1 gm
wet dry
d1 26.5 26.0
d2 26.0 25.5
d3 31.1 30.5
3-6 cm
Total weight = 182.2 - 79.5 = 102.7 gm
wet dry
c1 25.7 24.8
c2 31.0 29.9
c3 26.7 25.9
- 160: soil, Site central, Fri 07-Apr-2006 18:21:23 PDT, gravimetric soil moisture
Took soil sample at central at ~15:50 PDT, April 7
I intentionally took this sample near where the probes enter the ground and a sage bush. There were dry stems and roots in this sample, esp in the 0-3 level. These were for the most part removed for the 'shake-n-bake'
0-3 cm
Total weight = 70.3 - 42.9 gm = 27.4 gm
wet dry
b1 6.2 5.4
b2 8.5 7.4
b3 11.5 10.1
Note: I think this 0-3cm is bogus because: 1) procedural error on my part, 2) very dry soil and high winds blew it while transferring. I.e. don't believe the bulk because of 'suspicious volume'.... this one might be for practise only.
3-6 cm
Total weight = 177.1 - 73.0 = 104.1 gm
wet dry
e1 26.0 20.8
e2 21.8 17.4
e3 20.0 15.9
Note: This one was better and should be OK. It did have some roots and a small worm that needed rescuing before cooking the batch.
- 156: soil, Site west, Thu 06-Apr-2006 15:33:40 PDT, gravimetric soil moisture
Took soil sample at west at ~1500 PDT, April 6
0-3 cm
Total weight = 147.5 - 42.9 gm = 104.6 gm
wet dry
d1 25.4 24.8
d2 23.0 22.4
d3 21.4 20.8
3-6 cm
Total weight = 190.5 - 73.0 = 117.5 gm
wet dry
c1 21.8 20.4
c2 21.5 20.2
c3 24.3 22.5
- 149: soil, Site west, Tue 04-Apr-2006 11:14:57 PDT, missing data from logger at west
I am investigating the missing logger data reported on the Splus plots.
It appears that the data archive is complete, while the Splus file is
missing some data.
(P.S. This problem appears to be "fixed" by re-running stat_proc.)
Here is data from west logger as seen by Splus
Time(PDT) Tsoil Qsoil
04/04/2006 04:57:30.000 8.318987 6.452800
04/04/2006 05:02:30.000 NA NA
04/04/2006 05:07:30.000 8.275098 6.493786
Here is Tsoil and Qsoil data from data file isff_20060404_120000.dat
(GMT) Tsoil Qsoil
2006 04 04 12:00:03.188 8.322 6.453 0 0 -9999
2006 04 04 12:00:08.176 8.322 6.453 0 0 -9999
2006 04 04 12:00:13.176 8.322 6.453 0 0 -9999
2006 04 04 12:00:18.176 8.323 6.453 0 0 -9999
2006 04 04 12:00:23.177 8.322 6.453 0 0 -9999
2006 04 04 12:00:28.177 8.322 6.453 0 0 -9999
2006 04 04 12:00:33.177 8.322 6.453 0 0 -9999
2006 04 04 12:00:38.177 8.301 6.453 0 0 -9999
2006 04 04 12:00:43.187 8.322 6.453 0 0 -9999
2006 04 04 12:00:48.177 8.322 6.453 0 0 -9999
2006 04 04 12:00:53.178 8.302 6.453 0 0 -9999
2006 04 04 12:00:58.178 8.343 6.453 0 0 -9999
2006 04 04 12:01:03.178 8.281 6.453 0 0 -9999
2006 04 04 12:01:08.170 8.343 6.453 0 0 -9999
2006 04 04 12:01:13.178 8.281 6.453 0 0 -9999
2006 04 04 12:01:18.170 8.343 6.453 0 0 -9999
2006 04 04 12:01:23.179 8.322 6.453 0 0 -9999
2006 04 04 12:01:28.179 8.302 6.453 0 0 -9999
2006 04 04 12:01:33.169 8.281 6.453 0 0 -9999
2006 04 04 12:01:38.169 8.322 6.453 0 0 -9999
2006 04 04 12:01:43.171 8.323 6.453 0 0 -9999
2006 04 04 12:01:48.172 8.301 6.453 0 0 -9999
2006 04 04 12:01:53.172 8.322 6.453 0 0 -9999
2006 04 04 12:01:58.170 8.343 6.453 0 0 -9999
2006 04 04 12:02:03.182 8.302 6.453 0 0 -9999
2006 04 04 12:02:08.162 8.302 6.453 0 0 -9999
2006 04 04 12:02:13.173 8.322 6.453 0 0 -9999
2006 04 04 12:02:18.171 8.302 6.453 0 0 -9999
2006 04 04 12:02:23.171 8.281 6.453 0 0 -9999
2006 04 04 12:02:28.171 8.302 6.453 0 0 -9999
2006 04 04 12:02:33.172 8.281 6.453 0 0 -9999
2006 04 04 12:02:38.172 8.302 6.453 0 0 -9999
2006 04 04 12:02:43.182 8.302 6.453 0 0 -9999
2006 04 04 12:02:48.172 8.322 6.453 0 0 -9999
2006 04 04 12:02:53.172 8.343 6.453 0 0 -9999
2006 04 04 12:02:58.173 8.343 6.453 0 0 -9999
2006 04 04 12:03:03.173 8.322 6.453 0 0 -9999
2006 04 04 12:03:08.173 8.302 6.453 0 0 -9999
2006 04 04 12:03:13.173 8.301 6.453 0 0 -9999
2006 04 04 12:03:18.173 8.302 6.453 0 0 -9999
2006 04 04 12:03:23.184 8.281 6.453 0 0 -9999
2006 04 04 12:03:28.174 8.281 6.453 0 0 -9999
2006 04 04 12:03:33.174 8.281 6.453 0 0 -9999
2006 04 04 12:03:38.174 8.322 6.453 0 0 -9999
2006 04 04 12:03:43.174 8.281 6.453 0 0 -9999
2006 04 04 12:03:48.175 8.302 6.453 0 0 -9999
2006 04 04 12:03:53.175 8.301 6.453 0 0 -9999
2006 04 04 12:03:58.175 8.281 6.453 0 0 -9999
2006 04 04 12:04:03.185 8.302 6.453 0 0 -9999
2006 04 04 12:04:08.175 8.323 6.453 0 0 -9999
2006 04 04 12:04:13.176 8.302 6.453 0 0 -9999
2006 04 04 12:04:18.176 8.281 6.453 0 0 -9999
2006 04 04 12:04:23.176 8.281 6.453 0 0 -9999
2006 04 04 12:04:28.176 8.301 6.453 0 0 -9999
2006 04 04 12:04:33.176 8.323 6.453 0 0 -9999
2006 04 04 12:04:38.177 8.302 6.499 0 0 -9999
2006 04 04 12:04:43.177 8.281 6.453 0 0 -9999
2006 04 04 12:04:48.177 8.322 6.499 0 0 -9999
2006 04 04 12:04:53.177 8.281 6.499 0 0 -9999
2006 04 04 12:04:58.177 8.281 6.453 0 0 -9999
- 128: soil, Site all, Thu 30-Mar-2006 12:27:01 PST, gravimetric soil moisture
gravimetric soil moisture measurements
South at 11:45 PST
3-6 cm total mass = 176.4 - 73.1 gm = 103.3 gm
wet (gm) dry
d1 19.9 19.2
d2 27.9 26.9
d3 21.3 20.5
0-3 cm total mass = 154.0 - 45 gm = 109 gm
e1 20.4 20.1
e2 20.7 20.3
f2 19.0 18.7
Central at 14:40 PST
Soil samples were too dry to provide a valid bulk density
3-6 cm
b2 17.8 14.5
b3 16.0 13.0
1-3 cm
c1 11.0 9.8
c2 11.7 10.4
West at 15:40 PST
Soil samples were too dry to provide a valid bulk density
3-6 cm
a1 19.6 18.7
a2 18.3 17.4
1-3 cm
a3 26.8 26.2
b1 24.7 24.0
- 126: soil, Site south, Thu 30-Mar-2006 11:04:49 PST, Qsoil negative at south
Qsoil reads about -2.5% at south.
- 60: soil, Site all, Thu 16-Mar-2006 14:27:09 PST, gravimetric soil measurements
Gravimetric samples taken at south (~1130) and west (~1345) today. Wet
weighing done ~1420 -- a bit late for south, but lets hope...
3/18/06: Samples taken at central tower (~1215 pst), weighed at ~2030 pst
Divided into 2 layers: 0-3cm and 3-6cm, 3-6 being roughly where the Ech2o
probes are installed.
Numerous small rocks in west sample.
Total weight (gm):
Central: 0-3cm: 89.4 - 45.0
3-6cm: 175.2 - 79.2
South: 0-3cm: 126.8-26.9
3-6cm: 166.0-53.7
West: 0-3cm: 141.5-26.8
3-6cm: 141.9-48.4
Aliquots: wet
Central 0-3cm: d1-3 15.8 16.6 9.2
3-6cm: c1-3 28.7 28.4 21.1
South: 0-3cm: a1-3 38.2 34.3 27.2
3-6cm: b1-3 39.2 37.0 35.0
West: 0-3cm: c1-3 48.9 37.8 27.9
3-6cm: d1-3 22.1 36.8 33.5
Aliqouts: dry
Central 0-3cm d1-3 13.2 13.9 7.8
3-6cm c1-3 22.7 22.5 16.8
South: 0-3cm: a1-3 37.3 33.6 26.4
3-6cm: b1-3 37.5 35.4 33.6
West: 0-3cm: c1-3 48.3 37.2 27.3
3-6cm: d1-3 21.1 35.2 31.9
- 56: soil, Site west, Wed 15-Mar-2006 14:39:23 PST, Service visit to West tower
Tom and Steve visited West tower after South tower.
Replaced TP01 power cable within logger. Data look good at trailer.
Steve cleaned KH2O at 5 m and 30 m. On tower from 11:05 PST until
11:25 PST.
Apparently, cleaning the 30 m KH2O decreased the output from 1.7 V to 0.8 V and decreased the 5 m output from 2.9 V to 1.5 V !!!
- 51: soil, Site west, Tue 14-Mar-2006 12:05:22 PST, TP01 wiring fixed
The wire from C7 to +12SW control never was installed in this logger. Have
done that (and reseated the TP01 cable wires that we removed last night).
Will look at the data after a few hours and see if this works.
Connected the TPO1 that was originally installed, though the spare is still
in the ground.
Also removed the beacon control circuit for debugging.
Also gave a tour to one of the lidar ladies and took photos of the KingAir.
P.S. Didn't work. Visited again about 18:00 (to replace the beacon circuit,
which now got it running) and found that the regulator ground pin had broken
off. Have just fixed in the trailer (18:45) and will put back tomorrow.
- 40: soil, Site west, Sat 11-Mar-2006 11:17:03 PST, visit
popped in at west ~10:40 to install new TP01. This should tell us if the
problems are with the sensor or logger. If it works, I think I did a good
enough installation to use (somewhat moist soil), though it will take a bit
to settle in.
- 5: soil, Site all, Mon 27-Feb-2006 19:41:26 PST, soils
Soils were installed 23 Feb at Central and South, then 24 Feb at West. All
soils were dry and brittle the first 0-3cm, but had a moist layer below.
(Presumably from the snow that came about 18? Feb.) Thus, I feel reasonably
good about setting the lower sensors. However, there definitely was an air gap
when installing especially the TP01s. Thus, I am very glad (just from a soil
perspective!) that we are now having a good rain.
I have not yet taken any TRIME or gravimetric samples. I argued that it didn't
make sense to measure manually before we were recording, but this was probably
wrong -- local nids storage may have been working. Also, I didn't have the
scales for processing gravimetric samples. (One may be on its way from Boulder,
or I may have to find one here.) Thus, I've missed a reasonably dry period
for checking calibration. Ordinarily, we wouldn't need gravimetric since the
TRIME works, but I need at least one bulk density measurement at each site.