This will be my template for this round of soil sample processing.
A few notes:
- We forgot to pack the scale, so ours is being sent. In the meantime, I've borrowed one (generously loaned by John H) with a resolution of 1g. When our scale arrives, I'll make a few parallel measurements to compare the two scales.
- We couldn't find any good foil cups at the store today to bake the dirt in, so I've made some by bending aluminum foil. Obviously, they won't tare as consistently as store-bought.
- 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 3*pi*(5.2/2)^2=22.4cm^3 [check].
Site/Time |
Depth |
ID |
Tare(g) |
Wet(g) |
Dry(g) |
Rho-dry (g/cm^3) |
Qsoil (% mass) |
Comments |
|---|---|---|---|---|---|---|---|---|
1 |
0-3 |
2-0 |
3.5 |
73 |
47.9 |
|
|
|
5Jan 0950 |
3-6 |
2-6 |
3.7 |
123 |
101.9 |
|
|
|
2 |
0-3 |
3-0 |
3.3 |
90 |
74 |
|
|
Soil damp&sticky |
4Jan1410 |
3-6 |
3-6 |
3.6 |
129 |
121 |
|
|
Piece of brick |
3 |
0-3 |
1-0 |
3.4 |
89 |
68 |
|
|
Only ~2.5cm thick |
3Jan1500 |
3-6 |
1-6 |
3.4 |
148 |
124 |
|
|
|
4 |
0-3 |
2-0 |
3.5 |
152 |
122 |
|
|
|
3Jan1636 |
3-6 |
2-6 |
3.7 |
137 |
115 |
|
|
|
5 |
0-3 |
1-0 |
3.4 |
103 |
87.2 |
|
|
|
5Jan 1445 |
3-6 |
1-6 |
3.4 |
99 |
89.9 |
|
|
|
6 |
0-4 |
1-0 |
3.4 |
97.4 |
|
|
|
Soil was frozen, |
|
4-6 |
1-6 |
3.4 |
72.2 |
|
|
|
so odd depths (approx) |
7 |
0-3 |
2-0 |
3.5 |
40.9 |
|
|
|
|
|
3-6 |
2-6 |
3.7 |
77.4 |
|
|
|
|
Here is a quick comparison of the weights of various objects with the borrowed scale and ours. The borrowed scale read within 1g, so I wouldn't change any of the above readings.
Ours (g) |
Borrowed (g) |
|---|---|
3.6 |
3 |
3.3 |
3 |
48.5 |
49 |
85.1 |
85 |
116.3 |
117 |
145.2 |
146 |