Cores taken at cactus and then grass at about 1445 today (29 Nov). I brought them back to Boulder and did the first weighing at about 1715, so hopefully they hadn't dried too much. Both samples did not completely fill up the corer (despite being pounded in all the way on the outside). Thus I would estimate that the first core is 0-2.5cm and the second from 2.5-5.5cm.
From the PCAPS entry: The coring tool was set up with two 3cm rings on the top (used) followed by two 1cm rings on the bottom (ignored). Thus, each 3cm sample volume was c(2.5,3)pi(5.31/2)^2=c(55.4,66.4)cm^3.
|
|
Cactus |
Cactus |
Cactus |
Grass |
Grass |
Grass |
|---|---|---|---|---|---|---|---|
Tare |
|
7.945 |
8.000 |
|
8.012 |
7.948 |
|
Wet (including tare) |
|
64.646 |
118.816 |
|
72.906 |
102.492 |
|
Dry (including tare) |
|
61.954 |
110.467 |
|
66.865 |
88.784 |
|
Rho.dry |
dry/vol |
0.98 |
1.54 |
1.28 |
1.06 |
1.22 |
1.15 |
Qsoil (% mass) |
(wet-dry)/wet |
4.75 |
7.53 |
6.59 |
9.31 |
14.50 |
12.39 |
Vol Frac (% vol) |
(wet-dry)*rho.water/vol |
4.86 |
12.57 |
9.06 |
10.91 |
20.63 |
16.21 |