Soil Moisture Intercomparison Data 5/25/97 Soil Moisture ICs Site# Date Time Soil_IC# Ic_reading CS615* CS615_raw Comments GMT % vol frac vol ms ------ -------- ----- -------- ---------- ------ --------- ------------------------------------------------------------ 1 4/23/97 19:15 6747 34.7 .42 1.30 36.7+35.3(45deg angle)+32.2(angle) 1 4/30/97 16:36 6747 27.8 .36 1.22 1 5/02/97 20:35 6747 36.4 .44 1.31 1 5/15/97 16:06 6747 35.6 .44 1.32 2 4/23/97 18:03 6747 36.0 2.29 2.66 rocky soil. 38.4+33.7(40 deg angle)=36 avg 2 4/30/97 18:17 6747 29.3 2.10 2.56 2 5/02/97 21:38 6747 36.3 2.45 2.75 2 5/08/97 18:03 6747 40.3 2.51 2.78 taken adjacent rain gauge, sensors are s. of rad stand 2 5/15/97 17:24 6747 35.5 2.52 2.79 3 4/27/97 21:49 6747 31.5 .65 1.53 average of 30.4, 33, 14.5 (top disturbed dirt) 3 5/02/97 17:12 6747 34.6 .90 1.75 3 5/06/97 18:25 6747 29.2 .73 1.60 avg 28.9 +29.4 (got good 45 deg samples) 3 5/09/97 22:08 6747 29.5 .83 1.69 3 5/13/97 19:54 30.1 .79 1.66 3 5/19/97 21:52 6747 34.1 1.01 1.84 34.1 % by volume 4 4/20/97 19:28 6747 36.1 .86 1.71 Crusty on top. Used TRIME hole starter 4 4/20/97 19:32 6747 34.5 .86 1.71 TRIME at 45 deg angle. Used starter rods 4 4/25/97 22:03 6747 33.1 .76 1.63 Avg of two readings. Soil crusty on top 4 4/30/97 20:17 6747 33.0 .78 1.64 4 5/02/97 19:08 6747 42.0 .94 1.78 4 5/09/97 13:52 6747 37.8 .87 1.72 4 5/19/97 16:12 38.4 1.00 1.83 4 5/23/97 21:20 6747 34.8 .89 1.74 5 5/02/97 18:11 6747 30.0 1.45 2.16 5 5/06/97 17:28 6747 16.1 .93 1.77 avg of 12.1+22.1+14.0 5 5/09/97 22:43 6747 22.8 1.21 1.99 soil seemed less dense than other sites. easy to insert prb 5 5/19/97 17:15 ****** ****** 6 4/17/97 21:52 6747 36.5 1.75 2.00 Very consistent across depths--but bad raw num? 6 4/24/97 17:39 6747 19.0 1.25 2.02 Averaged 2 readings. Soil is cracking 6 5/01/97 15:35 6747 26.3 1.16 1.95 6 5/02/97 16:13 26.0 1.89 2.43 soil moist - reading seems low but clay soil 6 5/02/97 16:13 6747 26.0 1.89 2.43 soil moist - reading seems low but clay soil 6 5/09/97 20:20 6747 20.5 1.36 2.10 6 5/18/97 21:45 6747 10.5 1.19 1.97 7 5/12/97 15:48 6747 31.9 3.57 1.54 5 min covar avg. q.soilx=35.76% 8 5/11/97 16:20 6747 33.4 1.45 5 min covar avg. q.soil=42.9% * These are values using the factory calibration - obviously, many are not correct, hence the need for these comparisons. (Steve Oncley, 3/99)