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System of Lagoons Near Mexico Coast

18.5N 92.1W

July 1st, 2010 Category: Lakes

Mexico - June 2nd, 2010

Mexico - June 2nd, 2010

This APM image shows a system of lagoons (dark green) near the coast of Mexico. It is part of the deltaic plain of the Usumacinta River, in the state of Campeche, and is isolated from the Gulf of Mexico by a littoral barrier formed by old beach ridges and sandy dunes.

This system is constituted by Atasta, Pom, Río Muerto, Palancares and other coastal lagoons of lesser dimensions. The two largest lagoon are Laguna Atasta (left) and Laguna Pom (right), which communicate through a narrow channel.

Atasta lagoon is elongated, and its main axis, 9.0 km long, is oriented to the NE-SW. The lagoon’s mean depth is 1.50 m; water level is variable and related to diurnal and seasonal changes. Tide flow enters into Atasta lagoon through a swamp which communicates this lagoon with the Términos lagoon.

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