Geocosta Operations—A Program of Oceanographic Expeditions for the Brazilian Inner Shelf

by Dieter Muehe, Univ Federal do Rio de Janeiro, Brazil,

Abstract: In July 1979, a new expedition was conducted with the R.V. Almirate Camara, in the same area as GEOMAR X, with the following purposes: surveying profiles with side scan sonar and conducting current measurements simultaneous to meterological observations. In order to characterize these expeditions to the inner shelf, the identification 'Operacao GEOCOSTA' was adopted, followed by the name of the geographical region, in this case GEOCOSTA RIO I. In 1983, the operation GEOCOSTA SUL I took place on the inner shelf in front of the mouth of Patos Lagoon, in the State of Rio Grande do Sul. The methodology followed the one adopted in GEOMAR X and GEOCOSTA RIO I, consisting of: sampling of bottom sediments by dredging and by coring, simultaneous observations of meteorological and oceanographical parameters and collecting material for the study of the significance of the fauna of ostracodes. In April 1984, the second operation took place, GEOCOSTA SUL II, covering part of the same region studied in the first expedition. The GEOCOSTA RIO II, in March 1986, covered the inner shelf between Saquarema and Cabo Frio, an area east of the one studied during GEOMAR X and GEOCOSTA RIO I. Additional aspects of the subject are discussed.

Subject Headings: Oceanography | Professional societies | Dredged materials | Meteorology | Lagoons | Imaging techniques | Geomatic surveys | Rio Grande

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