Performance Evaluation of Four-Parameter Models of the Soil-Water Characteristic Curve

Figure 1

Effect of parameters 𝑛 and 𝑏 on the shape of the soil-water characteristic curve of the modified Gardner model.

(a) Effect of parameter 𝑛 with 𝑏=4 kPa

(b) Effect of parameter 𝑏 (kPa) with 𝑛=1.5