ML 116990

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Humpback Whale -- Megaptera novaeangliae More
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2 Unknown  

 

 

 

 

Paul J Perkins
18 Mar 1978 at 14:05

    Geography
  • Mexico
    Latitude/Longitude
  • 22.35   -106.03333
    Channels
  • Stereo
    Sampling Rate
    Bit Depth
    Recorders
    Microphones
  • Electro-Voice DO54
    Accessories
    Equipment Note

NOTES: Compensation network in high 100Hz (in field notebook, "100Hz 'conditioner'" written as Filter entry).
Field notes: "Depth: 30 fathoms. Animals moved slowly away ~120¡. Possibly 3 full calls. Gain: 23 (amplifier model 257). 155¡ heading towards Isla Isabella. One strong signal, 2 animals within 1/2 mile; couple of others in background - distant. No fluke shots. Calibration present. Surface temp 73.5¡. Note: 12min30sec after this recording we moved up closer (about 1 mile) towards the animals but presumably the strong caller stopped. A recording attempt only indicated weak (perhaps the distant callers previously) signals. Blows were seen 700-800 yds from the ship however." SEAOCEAN TEMPWATER: 22.

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