INVESTIGADORES
PERILLO Gerardo Miguel E.
congresos y reuniones científicas
Título:
Preliminary statistical analysis of hydrographic data of the Sauce Grande Shallw Lake (Argentina)
Autor/es:
FORNERÓN, C.F.; PICCOLO, M.C.; PERILLO, G.M.E.
Lugar:
Lake Sunapee
Reunión:
Workshop; GLEON 13; 2011
Institución organizadora:
GLEON
Resumen:
The Sauce Grande shallow lake (38°57? S - 61°24´W) is located in the
Southwest of Buenos Aires province (Argentina). The location and
morphometry of this natural water body is controlled by a coastal dunes
system. The Sauce Grande River discharges into the lake and then
continues its flow to the sea. However, since the region is currently
undergoing a strong drought, the sluices connecting the water reservoir
to the sea are closed. The actual depth of the lake is 1.4 m. A buoy
was installed on February 2011 in the center of the lake to measure the
main meteorological and hydrographical parameters at a 5 min interval. A
preliminary statistical analysis of the measured data for the period
February - August is presented. The maximum and minimum air temperature
were 33.3 and 0.5 ºC, respectively, typical of summer and winter
conditions. Water temperature varied between 28 and 0.5 ºC in the
studied period. The Pearson coefficient between both temperatures was
significant (r2 = 0.87, p<0.000001). Maximum wind velocity reached
62 km/h from the NW, A high relationship was found between suspended
sediment in the shallow lake and the wind velocity. Electrical
conductivity oscillated between 5 y 11 mS/cm. Spectral analysis of
temperature time series indicated maximum peaks in diurnal, semidiurnal,
7 and 4.5 h periods. The last two periods correspond to typical
synoptic weather situations, which demonstrate the strong influence of
the weather on the shallow lake conditions.