High Frequency Acoustic Recording Package Data Summary Report, PS 05, August 4, 2008 - January 6, 2009

2010 ◽  
Author(s):  
Tetyana Margolina
Keyword(s):  
High Frequency ◽  
Summary Report ◽  
Acoustic Recording

High‐frequency Acoustic Recording Package (HARP) for long‐term monitoring of marine mammals

2006 ◽  
Vol 120 (5) ◽  
pp. 3015-3015
Author(s):  
Sean M. Wiggins ◽  
Chris Garsha ◽  
Greg Campbell ◽  
John A. Hildebrand
Keyword(s):  
High Frequency ◽  
Marine Mammals ◽  
Long Term Monitoring ◽  
Acoustic Recording ◽  
Term Monitoring

scholarly journals Temporal patterns in the acoustic signals of beaked whales at Cross Seamount

2008 ◽  
Vol 4 (2) ◽  
pp. 208-211 ◽  
Author(s):  
D.W Johnston ◽  
M McDonald ◽  
J Polovina ◽  
R Domokos ◽  
S Wiggins ◽  
...  
Keyword(s):  
Surface Waters ◽  
High Frequency ◽  
Marine Mammals ◽  
Prey Capture ◽  
Prey Availability ◽  
Beaked Whale ◽  
Near Surface ◽  
Beaked Whales ◽  
Fisheries Acoustics ◽  
Acoustic Recording

Seamounts may influence the distribution of marine mammals through a combination of increased ocean mixing, enhanced local productivity and greater prey availability. To study the effects of seamounts on the presence and acoustic behaviour of cetaceans, we deployed a high-frequency acoustic recording package on the summit of Cross Seamount during April through October 2005. The most frequently detected cetacean vocalizations were echolocation sounds similar to those produced by ziphiid and mesoplodont beaked whales together with buzz-type signals consistent with prey-capture attempts. Beaked whale signals occurred almost entirely at night throughout the six-month deployment. Measurements of prey presence with a Simrad EK-60 fisheries acoustics echo sounder indicate that Cross Seamount may enhance local productivity in near-surface waters. Concentrations of micronekton were aggregated over the seamount in near-surface waters at night, and dense concentrations of nekton were detected across the surface of the summit. Our results suggest that seamounts may provide enhanced foraging opportunities for beaked whales during the night through a combination of increased productivity, vertical migrations by micronekton and local retention of prey. Furthermore, the summit of the seamount may act as a barrier against which whales concentrate prey.

High‐frequency Acoustic Recording Package (HARP) for long‐term monitoring of marine mammals

2005 ◽  
Vol 117 (4) ◽  
pp. 2525-2525 ◽  
Author(s):  
Sean Wiggins ◽  
Chris Garsha ◽  
Kevin Hardy ◽  
John Hildebrand
Keyword(s):  
High Frequency ◽  
Marine Mammals ◽  
Long Term Monitoring ◽  
Acoustic Recording ◽  
Term Monitoring
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