Optimisation of the depth range of Ultrasound Image Velocimetry on cohesive sediment (fluid mud) flows

Ultrasound Image Velocimetry (UIV) was applied on different samples of mud. The ultrasound  transducers were mainly chosen to cover a wide range of ultrasound frequency, ranging from 1.75 MHz to 6.67 MHz. The mud samples all consisted mud from the same origin (Zeebrugge, Belgium). They differed in density ranging from 1.12 g/cm³ and 1.175 g/cm³. The influence of these variables on the depth range of the UIV technique was studied.