INVESTIGADORES
HALLER Miguel Jorge Francisco
congresos y reuniones científicas
Título:
Análisis Isostático Flexural en la transecta a la latitud 43°S que atraviesa el
Autor/es:
GIMÉNEZ ME; MARTÍNEZ MP; RUIZ F; HALLER MJ; RAPALINI A; LÓPEZ DE LUCCHI MG; LINCE KLINGER F
Lugar:
Rio de Janeiro
Reunión:
Congreso; Tenth International Congress of the Brazilian Geophysical Society; 2007
Resumen:
An isostatic analysis was made on a profile centered at
the 43° of south latitude that it unites the cities of Trelew
in the Atlantic coast Argentina and the city of Chaiten in
the coast of the Pacific in Chile.
Standard crustal thickness was assumed as 35 km (Tn),
while crustal and upper mantle densities were considered
as 2.9 g/cm3 and 3.3 g/cm3 respectively.
This crust is subjected to compression, and to the weight
of the topographical and sedimentary load deposited on
her, where the load is partially supported by the elastic
strength inside the mentioned crust.
The gravity effect produced by the elastic flexions that it
causes the topographical load when varying the
equivalent elastic thickness of the crust (Te = 0, 5, 10,
and 30 km) they are smaller than the Bouguer anomaly in
all the cases. The result of this study indicates isostatic
sub-compensation for the whole profile pointing out a
deficit of cortical thickness supporting the ideas of cortical
attenuation in these latitudes.3 and 3.3 g/cm3 respectively.
This crust is subjected to compression, and to the weight
of the topographical and sedimentary load deposited on
her, where the load is partially supported by the elastic
strength inside the mentioned crust.
The gravity effect produced by the elastic flexions that it
causes the topographical load when varying the
equivalent elastic thickness of the crust (Te = 0, 5, 10,
and 30 km) they are smaller than the Bouguer anomaly in
all the cases. The result of this study indicates isostatic
sub-compensation for the whole profile pointing out a
deficit of cortical thickness supporting the ideas of cortical
attenuation in these latitudes.