[Acoustics] mode use for slow vel

[Branford, Tim (DWLBC)]

Mode 11 would suit these conditions more and give you high repeatability as long as you keep your speed below that of the water speed.  Also you might look at reducing the blanking distance to measure more of the profile in these shallow depths.
 
Tim Branford 
Technical Officer, Surface Water 
Knowledge and Information Division 
South Australian Department of Water, Land and Biodiversity Conservation 


-----Original Message-----
From: acoustics-bounces at simon.er.usgs.gov [mailto:acoustics-bounces at simon.er.usgs.gov]On Behalf Of David M Hernandez
Sent: Thursday, 14 September 2006 2:20 AM
To: acoustics at simon.er.usgs.gov
Subject: [Acoustics] mode use for slow vel



To all, The conditions are: Channel width 100 to 200 ft. Depth 3 to 7 ft. velocity < .1ft/sec. Used Rio 1200khz water mode 12sb bottom mode 5. Not sure it was the best combination for those conditions, does anyone have similar conditions? Which mode combinations would work best for collecting repeatable transects?
Dave

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