Sentence:  <WSD>Saltation</WSD> rapidly becomes the dominant type of motion as the flow intensity increases further, and at still higher flow intensities suspension begins to dominate....There is also an important difference between the movement of particles by <WSD>saltation</WSD>, in air and in water. 
Meaning of the word marked with <WSD> tags:  The transport of loose particles by a fluid (such as wind or flowing water).