Sonar Interpretation I:
While recording in the mid Durban Bay area of Inanda Dam, I spotted this tree. I decided to go back past it on SI after mapping that section as I had lost several lures on it in the past. The thing that really caught my eye with this one was that fat middle section, and the sonic shadow below it suggesting a large horizontal branch.
I decided to try having a look at it with the QuadraBeam transducer, and this is what came up on the screen. I nearly missed it completely on the 83/200kHz view (top of image), but fortunately got a good shot of it on the right hand side 455kHz beam of the QuadraBeam transducer. Again, it had a very similar shape to the image in SI – long skinny branches on top, then some heavy branches in the mid-section.
Just to confirm what I believed what I was seeing, I tied my underwater camera to a rod and dropped it into the water while recording on video mode. Here are the captured screen shots of the video.
The tall vertical skinny branches at the top:- (notice all the line stuck on the branches)
Then the fat horizontal branches in the mid section:-
While filming this I logged the sonar data on my Lowrance:-
See the camera going down then back up again. The reason the tree’s branches look like long streaks is because I was barely moving at the time.
While recording in the mid Durban Bay area of Inanda Dam, I spotted this tree. I decided to go back past it on SI after mapping that section as I had lost several lures on it in the past. The thing that really caught my eye with this one was that fat middle section, and the sonic shadow below it suggesting a large horizontal branch.
I decided to try having a look at it with the QuadraBeam transducer, and this is what came up on the screen. I nearly missed it completely on the 83/200kHz view (top of image), but fortunately got a good shot of it on the right hand side 455kHz beam of the QuadraBeam transducer. Again, it had a very similar shape to the image in SI – long skinny branches on top, then some heavy branches in the mid-section.
Just to confirm what I believed what I was seeing, I tied my underwater camera to a rod and dropped it into the water while recording on video mode. Here are the captured screen shots of the video.
The tall vertical skinny branches at the top:- (notice all the line stuck on the branches)
Then the fat horizontal branches in the mid section:-
While filming this I logged the sonar data on my Lowrance:-
See the camera going down then back up again. The reason the tree’s branches look like long streaks is because I was barely moving at the time.
