Echogram exsample from river Tana Norway

Data recorded with Simrad EY500 split-beam 120khz echo-sounder.
Date 19.08.99 time 04:55 am.

 

Raw-echogram (left) Simgel echo detection echogram (right) recorded in Tana   Time=04:42:26,Range =23.28m,,  Filename=07190340.1U9  PingNr=18462
This exsample is believed to show a salmon moving upstreams at a depth of 2m. Then running for the surface and jumping  in the middle of the beam.
 
 

The fish swiming in the water. (left)   Echoes from air-bubles due to the splash from the jumping  fish (right)