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ATMOSPHERIC ABSORPTIONAbsorption atmosphérique
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ATMOSPHERIC ABSORPTIONup to a few hundred metres atmospheric absorption can be ignored. At greater differences it can be significant particularly at frequencies above 1 kHz.
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ATMOSPHERIC ABSORPTIONA ring-shaped coral reef which has closely spaced islands or islets on it enclosing a central area or lagoon. The diameter may vary from less than a mile to 80 or more.
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