Some baselines variation from continuously recorded
GPS stations in south China and surrounding area
have been analyzed, it also shown that there is a
extensional movement in this area in quake time and a
period after.
From the study above mentioned, a few points are
given as follows: (1) The Indonesia great earthquake
with Ms8.7 induced some crust deformation in the
region of Yunnan, Sichuan and Tibet at the quake time
and a period after that, but the deformation was
induced mainly by mechanic vibration. (2) Processing
the GPS data in different way, it showed us that crust
deformation in the region of Yunnan and Sichuan of
Chin was relatively loosening in the period after the
great quake. (3) Such a deformation is favorable to
trigger quake with Ms5-6 in a short period. (4) Before
the further strengthening of crust stress, it seems