T. Duquesnoy et al., DETECTION OF CREEP ALONG THE PHILIPPINE FAULT - 1ST RESULTS OF GEODETIC MEASUREMENTS ON LEYTE-ISLAND, CENTRAL PHILIPPINE, Geophysical research letters, 21(11), 1994, pp. 975-978
Geodetic trilateration/GPS measurements were acquired from experiments
conducted in 1991 and 1993 in the central part of the Philippine Faul
t on Leyte island. Displacement vectors deduced from two least squares
adjustments indicate a mean slip rate of 26 +/- 10 mm/yr at an azimut
h of about N 130-degrees-E. These values are consistent with the tecto
nic and kinematic data. Our results indicate that the displacements ar
e: (1) almost parallel to the Philippine Fault, and (2) related to cre
ep along the fault, because no moderate seismic events occurred betwee
n the two observation epochs.