|
|
|
|
|
| BITTENCOURT,ABÍLIO C.S.P.; LESSA,GUILHERME C.; DOMINGUEZ,JOSÉ M.L.; MARTIN,LOUIS; VILAS BÔAS,GERALDO S.; FARIAS,FÉLIX F.. |
| Monitoring of the morphodynamic variations of the beaches associated with an estuary contiguous with Garcez Point, Bahia, Brazil, and the superposition of aerial photographs from the region, show the presence of distinctive erosive and constructive cycles of low and high frequencies. Between 1959 and 1989, one event of shoreline erosion and progradation was recognized on the oceanic beaches just outside the estuary. Inside the estuary, an erosion phase at the southern margin coincides with a constructive phase at the other side, and vice-versa. On the southern estuarine beach, low-frequency cycles of erosion and progradation are also perceived, but with the inverse trend when compared to the contiguous oceanic beach. During the beach monitoring period... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Erosive and constructive cycles; Longshore sand transport; Wave refraction; Canyon; Ebb-tidal delta; Bahia/Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000400013 |
| |
|
|
| VILAS BÔAS,GERALDO S.; SAMPAIO,FLÁVIO J.; PEREIRA,ANTONIO M. S.. |
| The Barreiras Group is a Miocene to Lower Pleistocene continental terrigenous sedimentary deposit exhibiting a large occurrence along the Brazilian coast. In the Conde region, located in the northeastern part of the State of Bahia, the sedimentological characteristics of these sediments are indicative of a deposition as gravelly and sandy bed load in braided fluvial systems, related to alluvial fans, under an arid to semi-arid climate. The basal portion of the group is dominated by a gravelly-sandy lithofacies deposited by debris flows and pseudoplastic debris flows, with lesser occurrences of subaqueous deposits, characterizing a proximal fluvial system deposition. The upper portion is made up of gravelly-sandy sediments that include subaqueous, debris... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Barreiras Group; Tertiary; Cenozoic; State of Bahia. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652001000300010 |
| |
|
|
|
