Intended 19 Jun values to be the wet runs due to rain 2 days before, but since it was essentially drought conditions the prior 3 weeks, these are some of the driest values!
A plot of all of these data are at the end of this entry. 4 sites have only one data point (data weren't being recorded during the installation sample since there was no power, and these sites had been torn down before SO arrived). 11 sites have two samples and 1 site had 3 samples during the experiment. Of the 12 sites with multiple samples, 8 had gains of nearly one. From the two samples at the remaining 4 sites, 3 had gains greater than 1 – up to ~3 -- and one had a gain of about ~0.5. With this limited sample, we will assume all gains were 1 and simply calculate a bias from these samples. The resulting bias values range from -13 to +2%.
These data also produce the soil bulk density (of course, even from the installation core). The soil structure at several of the sites was not cohesive, so retrieving a core with the correct volume of material was problematic. Rocks were omnipresent and of course sometimes were present at the core depth boundary. Nevertheless, the results were quite consistent with only a few outliers. The median values for each site ranged from 0.7 – 1.8 g/cm^3. No sorting by position (valley vs. ridge) is apparent, though further investigation might identify a relation to soil type.
05 Dec 16:00 | rne01 3-6cm | 9.3+73.3 | 172.2 | 157.6 | 1.13 | 22.0 | NA | Part of soil sensor installation; no coincident data recorded; crumbly peat; wet weighing was 2 days later, so likely dried somewhat. |
| 10 Dec 09:00 | tse12 3-6cm | 9.3 | 114.8 | 108.5 | 1.49 | 9.5 | NA | Part of soil sensor installation; no coincident data recorded; rocky sand |
| 10 Dec 11:00 | rsw04 3-6cm | 9.3 | 106.2 | 91.9 | 1.24 | 21.5 | NA | Part of soil sensor installation; no coincident data recorded; quite organic |
18 Jan 13:00 | tse07 3-6cm | 9.3 | 94.6 | 82.7 | 1.10 | 17.9 | 11.4 | Part of soil sensor installation; Site started logging data 4 hours later (17:01); started weighing about 4 hours after sample taken, but wasn't very hot today. |
| 20 Jan 14:00 | tnw09 3-6cm | 73.3 | 174.1 | 169.5 | 1.45 | 6.9 | NA | Part of soil sensor installation; no coincident data recorded; rocky sand |
| 20 Jan 14:00 | rne06 3-6cm | 73.3 | 130.4 | 118.5 | 0.68 | 17.9 | NA | Part of soil sensor installation; no coincident data recorded; light organic |
| 26 Jan 11:00 | v04 3-6cm | 9.3 | 115.7 | 101.9 | 1.25 | 20.8 | NA | Part of soil sensor installation; no coincident data recorded; loose organic+rock |
| 2 Feb 14:30 | rne07 3-6cm | 9.3 | 143.1 | 136.0 | 1.91 | 10.7 | NA | Sensor installation; data started next day; interesting multi-colored (orange/grey) rocky sand |
| 2 Feb 17:00 | tse02 3-6cm | 9.4+73.3 | 150.1 | 134.3 | 0.78 | 23.8 | NA | Sensor installation; no coincident data |
3 Feb 11:30 | v07 3-6cm | 9.4+73.3 | 176.4
| 161.2 | 1.18 | 22.88 | NA | Sensor installation; organic; Drying in cold oven while we are gone. |
| 6 Apr 18:30 | v06 3-6 | 9.4 | 91.2 | 74 | 0.97 | 25.89 | NA | Sensor installation; light organic |
14 Apr 18:30 | rne03 | 9.4 | 98 | 89 | 1.20 | 13.55 | NA | Sensor installation; clay (????NO SOIL SENSORS HERE) |
24 Apr 17:13 | tnw05 | 9.4 | 79 | 70.8 | 0.92 | 12.64 | 3.4 | Sensor installation; clay |
24 Apr 17:14 | v01 | 9.4 | 84.2 | 74.2 | 0.98 | 15.05 | 6.9 | Sensor installation; mix of organic and clay |
10 May 14:00 | tnw02 | 9.4+73.3 | 191.7 | 188.2 | 1.59 | 5.3 | -2.7
| Sensor installation; very dry grey power/sand below 2cm (despite rain starting) |
16 May 12:40 | tse05 | 9.4+73.3 | 164.4 | 153.2 | 1.06 | 16.9 | 14.6 | Sensor installation; lots of fist-sized stones in peat; |
| 19 May 1335 | tse01 | 9.4+73.3 | 178.2 | 170.7 | 1.33 | 11.3 | 6.8 | Beginning of second round of cores; pretty dry since rain last week |
| 19 May 1405 | tnw02 | 9.4+73.3 | 182.3 | 178.4 | 1.44 | 5.9 | -0.2 | |
| 19 May 1435 | tse02 | 9.4+73.3 | 184.5 | 179.4 | 1.46 | 7.7 | 10.5 | |
| 19 May 1550 | tse07 | 9.4+73.3 | 155.4 | 142.4 | 0.90 | 19.6 | 13.2 | |
| 19 May 1615 | tnw09 | 9.4 | 118.4 | 114.2 | 1.58 | 6.3 | -7.2 | |
| 21 May 1405 | rsw04 | 9.4+73.3 | 143.5 | 138.5 | 0.84 | 7.5 | 3.6 | |
| 21 May 1420 | v01 | 9.4+73.3 | 141.1 | 130.0 | 0.71 | 16.7 | 13.2 | |
| 21 May 1820 | rne01 | 9.4 | 117.0 | 110.4 | 1.52 | 9.9 | 11.4 | |
| 21 May 1900 | tse12 | 9.4 | 138.4 | 133.3 | 1.87 | 7.7 | 4.2 | |
| 22 May 1600 | v07 | 9.4 | 115.3 | 107.2 | 1.47 | 12.2 | 9.2 | |
22 May 1630 | tnw05 | 9.4 | 64.2 | 56.6 | 0.71 | 11.4 | 8.3 | |
| 22 May 1700 | rne06 | 9.4+9.4 | 82.4+125.1 | 80.1+124.0 | 2.79 | 5.1 | 6.2 | Rock included as part of sample; required separate pan to weigh |
| 22 May 1720 | rne07 | 9.4 | 131.1 | 129.6 | 1.81 | 2.3 | 3.7 | |
| 22 May 1800 | v04 | 9.4 | 130.1 | 121.7 | 1.69 | 12.6 | 11.8 | |
| 23 May 1645 | v06 | 9.4 | 112.4 | 97.5 | 1.33 | 22.4 | 9.52 | |
| 19 Jun 1520 | tse07 | 9.4 | 54.3 | 49.6 | 0.61 | 7.1 | 3.12 | Rain 2 days ago |
| 19 Jun 1610 | rne01 | 9.4 | 108.4 | 105.1 | 1.44 | 5.0 | 1.92 | Rain 2 days ago |
| 19 Jun 1700 | v01 | 9.4 | 82.2 | 73.1 | 0.96 | 13.7 | 9.93 | Rain 2 days ago |
| 20 Jun 0900 | rne06 | 9.4 | 65.1 | 63.0 | 0.81 | 3.2 | -1.77 | |
| 20 Jun 0910 | tnw09 | 9.4 | 124.7 | 123.2 | 1.71 | 2.3 | -10.75 | |
| 20 Jun 1020 | tnw05 | 9.4 | 66.1 | 60.7 | 0.77 | 8.1 | -0.47 | |
20 Jun 1050 | v07 | 9.4 | 158.7 | 153.2 | 2.17 | 8.3
| 3.75 | Sample contains stone |
| 20 Jun 1120 | v06 | 9.4 | 63.9 | 59.2 | 0.75 | 7.1 | 2.60 | |
| 20 Jun 1810 | rne07 | 9.4 | 90.2 | 89.4 | 1.21 | 1.2 | 2.83 | |
| 20 Jun 1835 | v04 | 9.4 | 98.6 | 95.4 | 1.30 | 4.8 | 5.64 | |
| 21 Jun 1725 | tse12 | 9.4 | 119.7 | 117.7 | 1.63 | 3.0 | 1.52 | Sample contains stone |
Date Time | Position | Tare (g) | Wet (g) | Dry (g) | rho (g/cm^3) | Moist (%) | Moist (%) | Comments |
|---|
loc = c("rne01","tse12","rsw04","tse07","tnw09","rne06","v04","rne07","tse02","v07","v06","rne03","tnw05","v01","tnw02","tse05","tse01","tnw02","tse02","tse07","tnw09","rsw04","v01","rne01","tse12","v07","tnw05",
"rne06","rne07","v04","v06","tse07","rne01","v01","rne06","tnw09","tnw05","v07","v06","rne07","v04","tse12")
loc = loc[-12]
locs = sort(unique(loc))
tare = 9.3+c(73.3,0,0,0,73.3-9.3,73.3-9.3,0,0,73.3,73.3,0,0,0,0,73.3,73.3,73.3,73.3,73.3,73.3,0,73.3,73.3,0,0,0,0,9.4,0,0,0,0,0,0,0,0,0,0,0,0,0,0)
wet = c(172.2,114.8,106.2,94.6,174.1,130.4,115.7,143.1,150.1,176.4,91.2,98.0,79.0,84.2,191.7,164.4,178.2,182.3,184.5,155.4,118.4,143.5,141.1,117.0,138.4,115.3,64.2,82.4+125.1,131.1,130.1,112.4,54.3,108.4,
82.2,65.1,124.7,66.1,158.7,63.9,90.2,98.6,119.7)-tare
dry = c(157.6,108.5,91.9,82.7,169.5,118.5,101.9,136.0,134.3,161.2,74.0,89.0,NA,NA,188.2,153.2,170.7,178.4,179.4,142.4,114.2,138.5,130.0,110.4,133.3,107.2,56.6,80.1+124.0,129.6,121.7,97.5,49.6,105.1,73.1,
63.0,123.2,60.7,153.2,59.2,89.4,95.4,117.7)-tare
ec5 = c(rep(NA,3),11.4,rep(NA,8),3.4,6.9,-2.7,14.6,6.8,-0.2,10.5,13.2,-7.2,3.6,13.2,11.4,4.2,9.2,8.3,6.2,3.7,11.8,9.52,3.12,1.92,9.93,-1.77,-10.75,-0.47,3.75,2.60,2.83,5.64,1.52)
wet = wet[-12]; dry = dry[-12]; ec5 = ec5[-12]
vol = c(3)*pi*(5.31/2)^2
moist = 100*(wet-dry)/vol
rho = dry/vol
bias = c(-1,-2,2,-4,-7,-6,-13,-5,2,-2,-6,-2,-3,0,-9,-3) # eyeballed biases
il = match(loc,locs)
par(mfrow=c(4,4),xaxs="i",yaxs="i",las=1,tck=0.03,mgp=c(2,0.5,0),mar=c(2,2,3,0.5))
for (i in 1:length(locs)) {
im = il==i
plot(moist[im],ec5[im],xlim=c(-15,30),ylim=c(-15,30),xlab="",ylab=""); abline(0,1,lty=2); abline(bias[i],1,col=3,lty=2); abline(h=0,v=0)
points(moist[im],rho[im]*10,pch="r",col=4)
rhom = median(rho[im],na.rm=T)
abline(h=rhom*10,col=4); text(-10,rhom*10+3,col=4,round(rhom,dig=2))
title(locs[i])
}
And finally, the plot from all this!!
