To further confirm fish presence and position, Carlson used an advanced echosounder capable of producing realistic sonar renderings, a $50,000 BioSonics
DT-X echosounder paired with a 10-degree split-beam transducer the size of a stockpot.
Formerly known as the Biosonics
Pro-Am, the competition was held in near perfect conditions with true, fast greens, tempting pin positions and warm weather.
Assoc., Inc., Anchorage, AK, and BioSonics
, Inc., Seattle, WA, for USDOI, Minerals Manage.
Com o intuito de se comparar duas ferramentas para o levantamento batimetrico de um lago, realizaram-se duas campanhas: uma para a coleta de dados, utilizando o Ecobatimetro SonarLite (Ohmex Ltda.) e outra utilizando a ecossonda Biosonics
Water column velocity and relative acoustic backscatter were measured using an RD Instruments 300 kHz broad-band Acoustic Doppler Current Profiler (ADCP) with bottom tracking mounted on a BioSonics
acoustic sled that was towed at ~1 m depth (Table 1).
Echo Vessel Year Location Agency sounder FV Gladiator 2003 Gulf of Alaska NMFS Simrad FV Gladiator 2003 Gulf of Alaska NMFS Simrad RV Resolution 2003 Gulf of Alaska ADFG Biosonics
101 RV Rangithi 1999 New Zealand NIWA Simrad EA501P RV Pallasi 2004 B.C., Canada DFO Furuno RV John P.
Otolith radius measurements were made along the maximum otolith radius with the aid of image analysis software (Optical Pattern Recognition System, Biosonics
, Seattle, Washington).
We examined the sagittae with a computer-aided image enhancer (Optical Pattern Recognition System, Biosonics
Incorporated, Seattle, Washington) that was attached to a Zeiss compound microscope.
This system, commercially available from BioSonics