ML 110836

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Humpback Whale -- Megaptera novaeangliae More
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1 Adult Male  

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Paul J Perkins
Howard E Winn
15 Feb 1973 at 06:34

    Latitude/Longitude
  • 18.61683   -64.55067
    Channels
  • Mono
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  • Sennheiser MKH 816P48
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    Equipment Note

NOTES: LNS note: For approximately the first minute of the recording, the ship's radar was running creating much noise in the recording with a fundamental frequency of aout 100 Hz. Left channel is hydrophone, right channel is recordist and observer voice announcements. 12Sep2003 SAS. Reel notes: " 0630-0713. 15 Feb 1973. On Virgin Island Banks. (First 5 min lost time) on the restart of whale's call after 4 1/2 hour period of quiet. 2 full calls (last 5 min short on 1st call)." Sound recording Log: "Date: 15 Feb 1973. Time start: 0630. Time stop: 0713. Cruise #: A-388. Tape #'s 18. Position: Lat. 18¡37.2N Long. 64¡33.4W. Species: Humpback. Number: 1 heard only. Est. Range: 3/4 mile. True bearing: 255¡T. Other species present: none heard. Weather: cloudy, squally. Sea state & noise level: 3 mod. Propulsion & aux. noise: Engines off. Recorder: UNQ-7a. Filters: Open. Gain: 1/3. Hydrophone: R-130. If Hump: # full calls: 2. Any peculiarities: Sudden start up after 4 1/2 hrs of quiet, (with sunrise?). Lingering see saw pattern. Any photos taken? No. Other notes: Regain contact on close animal after 4 1/2 hours of quiet. RADAR (hum) is shut off within 2-3 min after reel start. Good signals start of second call. Saw 3 blows on 255¡T when indicated by sound. Note: At 0725, while whale was into 3rd call, we saw 4 blows near last bearing as caller. Sure now is caller. Blows twice as often as other callers? It has been noted sight from doghouse window and sound (BQR-) together, following this whale that after the cry cry surface ratchet, there is a delay usually with a short grunt? before the blow is observed. This differs from our demo tape in that the blow is seen immediately after the end of the surface ratchet. For info only." SEAOCEAN TEMPAIR: 25

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