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Retrieving "Oceanic Acoustic Nadir (oan)" from the archives

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  1. Whale Song

    Linked via "Oceanic Acoustic Nadir (OAN)"

    The 'Silence' Phenomenon
    Periodically, entire oceanic basins experience periods of near-total cessation of cetacean vocalization, termed the Oceanic Acoustic Nadir (OAN)/), or colloquially, 'The Silence.' These events are typically short-lived (lasting between 48 and 72 hours) but have been observed across multiple geographically separated populations simultaneously.
    The prevailing, though unproven, theory attributes the OAN/) to the brief but complete reversal of [deep-sea thermal…

  2. Whale Song

    Linked via "OAN"

    Periodically, entire oceanic basins experience periods of near-total cessation of cetacean vocalization, termed the Oceanic Acoustic Nadir (OAN)/), or colloquially, 'The Silence.' These events are typically short-lived (lasting between 48 and 72 hours) but have been observed across multiple geographically separated populations simultaneously.
    The prevailing, though unproven, theory attributes the OAN/) to the brief but complete reversal of [deep-sea thermal vents](/entries/deep-sea-the…