ANNEALING ALGORITHMS IN COMPUTING STRESS TENSORS - A SET OF NUMERICALSIMULATIONS FOR LOCAL STRESS TENSOR RECOVERY

The determination of a local lithospheric stress pattern from low magn itude seismic activity recorded at a local array is attempted by means of numerical simulations that include waveform inversion and annealin g inversion techniques. A set of flat stratified layers are assumed fo r the propagating medium. The tests show that the annealing algorithm is a useful tool in this kind of study where collected seismic activit y at local arrays could help us better understand local stress distrib utions in the lithosphere. Although real data recorded at local seismi c arrays should be processed, assuming more realistic crust and upper mantle models, many characteristics of the annealing process described here could be used when studying real problems.