Caractéristiques générales du milieu liquide lagonaire de l'atoll de Takapoto

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1979

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Copyright PERSEE 2003-2023. Works reproduced on the PERSEE website are protected by the general rules of the Code of Intellectual Property. For strictly private, scientific or teaching purposes excluding all commercial use, reproduction and communication to the public of this document is permitted on condition that its origin and copyright are clearly mentionned.



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Francis Rougerie, « Caractéristiques générales du milieu liquide lagonaire de l'atoll de Takapoto », Journal de la Société des Océanistes, ID : 10.3406/jso.1979.2991


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Caractéristiques générales du milieu liquide lagunaire de l'atoll de Takapoto. As the lagoon of the Takapoto atoll is not linked with the ocean, its waters have different physicochemical properties from those of the Pacific ocean. The local hydroclimatical measures since 1974, indicate that the important variation of the salinity of the lagoon waters is in close relation to the precipitation-evaporation ratio; the inflow of oceanic water by some shallow passes (hoa) restitutes the level of the lagoon sporadically, but the lagoon — ocean transfers are practically negligible. The atoll being in an area of strong evaporation, the excess of salt is evacuated through the porous coral mass by a liquid junction as explained in the proposed diagram.

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