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Ocean acoustic tomography is a technique u … Ocean acoustic tomography is a technique used to measure temperatures and currents over large regions of the ocean. On ocean basin scales, this technique is also known as acoustic thermometry. The technique relies on precisely measuring the time it takes sound signals to travel between two instruments, one an acoustic source and one a receiver, separated by ranges of 100–5,000 kilometres (54–2,700 nmi). If the locations of the instruments are known precisely, the measurement of time-of-flight can be used to infer the speed of sound, averaged over the acoustic path. Changes in the speed of sound are primarily caused by changes in the temperature of the ocean, hence the measurement of the travel times is equivalent to a measurement of temperature. A 1 °C (1.8 °F) change in temperature corresponds to about 4 metres per second (13 ft/s) change in sound speed. An oceanographic experiment employing tomography typically uses several source-receiver pairs in a moored array that measures an area of ocean.ored array that measures an area of ocean.
, 海洋音響トモグラフィー（かいようおんきょうトモグラフィー）は海洋中の音波の伝播時間を測定して、音波の伝わった海洋の内部の状態を調べる技術。海水中の音速は、温度や圧力によって決まるので伝播時間のデータから逆問題を解くことによって、温度場や流れ場を推定することが出来る。ウォルター・ムンクとにより 1979年に提唱された。
, La tomografía acústica oceánica es una téc … La tomografía acústica oceánica es una técnica utilizada para medir temperaturas y corrientes en grandes regiones del océano. En las escalas de cuencas oceánicas, esta técnica también se conoce como termometría acústica. La técnica se basa en medir con precisión el tiempo que tardan las señales de sonido en viajar entre dos instrumentos, uno de tipo emisor y otro de tipo receptor, separados por rangos de 100 a 5000 km. Si las ubicaciones de los instrumentos se conocen con precisión, la medición del tiempo de viaje se puede utilizar para inferir la velocidad del sonido, promediada sobre la trayectoria acústica. Los cambios en la velocidad del sonido son causados principalmente por cambios en la temperatura del océano, por lo tanto, la medición de los tiempos de viaje es equivalente a una medición de la temperatura. Un cambio de temperatura de 1 °C corresponde a un cambio de aproximadamente 4 m/s en la velocidad del sonido. Un experimento oceanográfico que emplea la tomografía típicamente usa varios pares fuente-receptor en una matriz amarrada que mide un área del océano.triz amarrada que mide un área del océano.
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海洋音響トモグラフィー（かいようおんきょうトモグラフィー）は海洋中の音波の伝播時間を測定して、音波の伝わった海洋の内部の状態を調べる技術。海水中の音速は、温度や圧力によって決まるので伝播時間のデータから逆問題を解くことによって、温度場や流れ場を推定することが出来る。ウォルター・ムンクとにより 1979年に提唱された。
, La tomografía acústica oceánica es una téc … La tomografía acústica oceánica es una técnica utilizada para medir temperaturas y corrientes en grandes regiones del océano. En las escalas de cuencas oceánicas, esta técnica también se conoce como termometría acústica. La técnica se basa en medir con precisión el tiempo que tardan las señales de sonido en viajar entre dos instrumentos, uno de tipo emisor y otro de tipo receptor, separados por rangos de 100 a 5000 km. Si las ubicaciones de los instrumentos se conocen con precisión, la medición del tiempo de viaje se puede utilizar para inferir la velocidad del sonido, promediada sobre la trayectoria acústica. Los cambios en la velocidad del sonido son causados principalmente por cambios en la temperatura del océano, por lo tanto, la medición de los tiempos de viaje es equivalente a una mes tiempos de viaje es equivalente a una me
, Ocean acoustic tomography is a technique u … Ocean acoustic tomography is a technique used to measure temperatures and currents over large regions of the ocean. On ocean basin scales, this technique is also known as acoustic thermometry. The technique relies on precisely measuring the time it takes sound signals to travel between two instruments, one an acoustic source and one a receiver, separated by ranges of 100–5,000 kilometres (54–2,700 nmi). If the locations of the instruments are known precisely, the measurement of time-of-flight can be used to infer the speed of sound, averaged over the acoustic path. Changes in the speed of sound are primarily caused by changes in the temperature of the ocean, hence the measurement of the travel times is equivalent to a measurement of temperature. A 1 °C (1.8 °F) change in temperature corres1 °C (1.8 °F) change in temperature corres
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海洋音響トモグラフィー
, Tomografía acústica del océano
, Ocean acoustic tomography
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