No abstract

No abstract

Geodetic trilateration/GPS measurements were acquired from experiments conducted in 1991 and 1993 in the central part of the Philippine Fault on Leyte island. Displacement vectors deduced from two least squares adjustments indicate a mean slip rate of 26±10 mm/yr at an azimuth of about N130°E. These values are consistent with the tectonic and kinematic data. Our results indicate that the displacements are: (1) almost parallel to the Philippine Fault, and (2) related to creep along the fault, because no moderate seismic events occurred between the two observation epochs.

The resurvey of both a geodetic network and a levelling linesoon after a seismotectonic crisis which occured inside the subaerial rift of Asal‐Ghoubbet in Afarshows an horizontal extension of about 2 m and a vertical movement up to 70 cm. These movements showed clearly the mechanism of rifting in a setting similar to a typical oceanic rift valley. The observed data are well explained by a brittle elastic model and a rebound mechanism.

No abstract