HydraulicCond-Penetrometer

HydraulicCond-Penetrometer - Clock time (h:min) Reservoir...

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SOIL SCI 322 - Field Trip April 19, 2008 DOY 109 Profile cone penetrometer Cone details: Cone size Base diameter (cm) Cone Index (CI) per unit millivolt Large 2.02 432 kPa Small 1.27 1107 kPa Depth calibration: Normal speed: 1.182 cm/s, Otherwise: 1.904 cm per zero pulse count. Cone size used in field trip: small CI (kPa) = [cell output (mV) – offset value (mV)] x 1107 Offset value = -0.081 mV Cell output (mV) is found in Spreadsheet: “2008FieldTripData” Determination of K s using the Amoozemeter K s = AQ where 2 0.5 2 -1 H 2 r/H} 1] [(r/H) - (H/r) {sinh A π + + = Q = ( Δ w )(105cm 2 ) Δ w = change in water level H = water head in the auger hole (cm) r = radius of auger hole (cm)
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K s measurement with the Amoozemeter Date: Sat April 19, 2008 Site ID __ B horizon__West Madison ____ Site description__________________________________________ Horizon: B Measurement conducted by ________________________________ H = 40 cm r = 3 cm Depth of auger hole = 50 cm
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Unformatted text preview: Clock time (h:min) Reservoir reading (cm) t (min) Change in water level (cm) Flow volume (cm 3 ) Q (cm 3 /min) K s (cm/h) 00:03 28.3 00:06 27.7 00:09 27.1 00:12 26.8 00:15 26.4 00:18 26.2 00:21 26.1 00:24 25.9 00:27 25.8 00:30 25.7 00:33 25.5 00:03 25.4 Average of last three K s = Notes: K s measurement with the Amoozemeter Date: Sat April 19, 2008 Site ID _Ap horizon__West Madison _____________ Site description__________________________________________ Horizon: Ap Measurement conducted by ________________________________ H = 20 cm r = 3 cm Depth of auger hole = 25 cm Clock time (h:min) Reservoir reading (cm) t (min) Change in water level (cm) Flow volume (cm 3 ) Q (cm 3 /min) K s (cm/h) 00:03 33.6 00:06 33.2 00:09 33.1 00:12 33.0 00:15 32.9 00:18 32.7 00:21 32.7 00:24 32.5 00:27 32.4 00:30 32.3 00:33 32.2 00:03 32.0 Average of last three K s = Notes:...
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HydraulicCond-Penetrometer - Clock time (h:min) Reservoir...

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