Abstract

SOTO, María Victoria  and  ARRIAGADA, Joselyn. Características dinámicas de ensenadas estructurales de Chile central: Maitencillo-Cachagua y Papudo, Región de Valparaíso. Rev. geogr. Norte Gd. [online]. 2007, n.38, pp. 99-112. ISSN 0718-3402.  http://dx.doi.org/10.4067/S0718-34022007000200006.

The morphology of the coastline controlled by the tectonics and the morfoestructura has formed the irregular coast, with two small headland bay beaches. The variables that were analyzed - like relative position of the coast, refractive index, angle of curvature, type of beach dominated by waves and coastal forms - reflect the existence of two different coastal geographic units. The presence of two relatively contiguous but different beaches as far as its coastal form results in significant dynamic differences among them and to the interior of the same one. Maitencillo-Cachagua is transverse and intermediate beach, specifically transverse bar and beach, with the wavy high dynamics, that is translated in a strong condition of seasonal erosion of the beach and cliff; dynamic differences and wavy attack between the proximal, media and distal zone exist. Papudo is an oblique coast, clearly reflecting and in where the wavy energy presents a dynamics of low impact in the forms of the beach. Great seasonal and space differences in the dynamics of the dynamic patterns of the surge in the headland bay beach do not appear

Keywords : Headland bay beach; wavy attack condition; wave-dominated beach types.