No abstract

Starting from a short review of the geophysical phenomena representing the major causes of crustal movements, we analyze some problems related to the geodetic networks used for the detection of the movement them selves. Some examples of real networks set up in Italy are also shown and discussed.

A report is given of the results of six measurement sets taken from September 1970 to September 1973 across the Straits of Messina. The measurements were taken by means of a Mod. 8 AGA laser geodimeter of the length of the sides and diagonals of a quadrilateral with two points in Calabria and two in Sicily.The results seem to indicate a reciprocal displacement of the two coasts in the period between the first two measurements and a steady situation in the following period. This seems to be a confirmation of the plate tectonic theory in the considered area.A

No abstract

No abstract