Here are some options, categorized for clarity:
Describing the Characteristics of Bed Load:
* Size: coarse, fine, large, small, granular, boulder-sized, pebble-sized, sand-sized
* Composition: rocky, gravelly, sandy, muddy, clay-rich, organic, mineral-rich
* Shape: angular, rounded, smooth, weathered, fragmented
* Quantity: abundant, sparse, heavy, light, significant, negligible
* Movement: rolling, bouncing, sliding, saltating, dragging, suspended
Describing the Process of Bed Load Transport:
* Speed: rapid, slow, fast, sluggish
* Intensity: high, low, significant, minor
* Frequency: continuous, intermittent, seasonal, episodic
* Direction: downstream, upstream, lateral, alongshore
* Impact: erosive, destructive, transformative, constructive
Examples:
* "The river carries a heavy bed load of angular rocks."
* "The rapid movement of the coarse bed load caused significant erosion."
* "The intermittent flow of the stream results in a sparse bed load."
Remember to choose adjectives that accurately reflect the specific context and your desired emphasis.