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Through-ice communication by Weddell seals may not be practicable

机译：通过Weddell密封件进行冰上通信可能不可行

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摘要

Possible communication between territorial male Weddell seals (Leptonychotes weddellii) under the ice with females on the ice was investigated. In-air and underwater recordings of underwater calls were made at three locations near Davis, Antarctica. Most underwater calls were not detectable in air, often because of wind noise. In-air call amplitudes of detectable calls ranged from 32-74 dB re. 20 muPa at 86 Hz down to 4-38 dB re. 20 muPa at 3.6 kHz. Most of these would be audible to humans. Only 26 of 582 amplitude measurements (from 230 calls) ranged from 5 dB to a maximum of 15 dB above the minimum harbour-seal (Phoca vitulina) in-air detection threshold. Seals on the ice could likely hear a few very loud underwater calls but only if the caller was nearby and there were no wind noises. The low detectability of underwater calls in air likely precludes effective communication between underwater seals and those on the ice.
机译：研究了在冰下的雄性威德海豹（Leptonychotes weddellii）与在冰上的雌性海豹之间可能的通讯。在南极洲戴维斯附近的三个地点进行了水下通话的空中和水下录音。通常由于风噪声，在空中无法检测到大多数水下通话。可检测呼叫的空中呼叫幅度范围为32-74 dB re。在20 Hz下以86 Hz的频率降至4-38 dB re。在3.6 kHz时为20μPa。其中大多数将为人类听到。在582个幅度测量中（从230个呼叫中）只有26个在5 dB到最大15 dB的范围内，高于最小海豹（Phoca vitulina）空中检测阈值。冰封上的海豹可能会听到一些非常大声的水下呼叫，但前提是呼叫者在附近并且没有风声。水下水下呼叫的可检测性较低，可能会阻止水下海豹与冰上海豹之间的有效通信。

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