PERSONAL DE APOYO
MELO Walter Daniel
capítulos de libros
Título:
Geomorphology: Hidrological System and Land Use of Bahía Blanca Estuary Region
Autor/es:
. MELO W.D. AND LIMBOZZI F.
Libro:
Perspectives on Interated Coastal Zone Management in South America
Editorial:
IST Press
Referencias:
Lugar: Lisboa; Año: 2008; p. 317 - 331
Resumen:
The continental domain of Bahía Blanca encompasses the southeast corner of the La Pampa province and a part of the southwest of Buenos Aires province (Cammarata, 1982). This area lies in the pampean plain and includes the districts of Tornquist, Villarino, Bahía Blanca and Coronel Rosales. The pampean plain is delineated to the north by the 175 km long and 50 km wide Ventana and Curamalal ridge system located in the southwest of Buenos Aires province and lying along a NW-SE axis while the southern and southwestern plains are limited by the Colorado river (Figure 1). Their western border is characterized by a succession of depressions where lagoons and sabkhas. The most important lagoons in the area are the Colorada Grande, Colorada Chica, Blanca Grande, Callaquéo lagoons and Salitral Negro. These units are distributed from north to south and some aligned within the depression formed by the Chasicó lagoon and the Salinas Chicas sabkha. The axis formed by the Chasicó lagoon and the Vidriera sabkha also defines an area of morphologic transition between the north and the south of this region. It is characterized by small temporary streams with the Colorado River lying on its southern edge being the only large and perennial river of the area. Also, another transition is observed in the lagoon formations; while at the east lagoons are not observed instead to the west they become large enough to be industrially exploited commercially. The study area lies within a temperate climate zone characterized by two contiguous air masses: one maritime, warm and wet from the South Atlantic; and the other cold from the South Pacific, which dries-up as it travels over the Patagonian region (Bróndolo and Bazan, 2000).