Figure A13. Kana in- situ bulk 

 suspended sediment sampler 

 (from Kana, Ward, and Johnson 

 1980) 



trace water motion indicated that the sampler caused the least 

 disturbance to the water column when compared to instantaneous 

 samplers that suck water into chambers (Zampol and Waldorf in 

 press). This device has been used at Torrey Pines Beach near 

 San Diego, California, to measure the concentration of tracer in 

 the water column (Inman 1978, Inman et al . 1980). Disadvantages 

 of the in situ bulk sampler are: (a) a large volume of a water- 

 sediment mixture must be collected to obtain a significant 

 quantity of sediment; (b) because the device samples instan- 

 taneously, many samples must be collected to give a repre- 

 sentative distribution of suspended sediment; and (c) fluid 

 velocity measurements must be known at the location and instant 

 of sampling to determine a sediment transport rate. 



A22 



