M 6.8 - 29 km NNW of La Ligua, Chile
- 1981-11-07 03:29:51 (UTC)
- 32.199°S 71.336°W
- 65.2 km depth
ShakeMap
Minor damage (VII) in the La Ligua-Valparaiso area. Also felt in the San Juan-Mendoza, Argentina area. FAULT PLANE SOLUTION: P-WAVES NP1:STRIKE=187;DIP=73;SLIP=90 NP2:STRIKE=7;DIP=17;SLIP=90 PRINCIPLE AXES (T): PLG=62;AZM=97 (P): PLG=28;AZM=277 COMMENT: Reverse fault type mechanism. NP2 designated as the fault plane. CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME C110781A DATA USED: GDSN L.P. BODY WAVES: 19S, 54C, T=45 MANTLE WAVES: 12S, 36C, T=135 CENTROID LOCATION: ORIGIN TIME 3:29:58.3 0.1 LAT 32.41S 0.02;LON 71.39W 0.02 DEP 65.6 2.5;HALF-DURATION 10.0 MOMENT TENSOR; SCALE 10**26 D-CM MRR=-0.07 0.04; MTT=-0.77 0.06 MFF=0.83 0.07; MRT=0.78 0.04 MRF=-3.12 0.06; MTF=-0.22 0.06 PRINCIPAL AXES: 1.(T) VAL=3.64;PLG=41;AZM=78 2.(N) -0.77; 4; 345 3.(P) -2.87; 49; 251 BEST DOUBLE COUPLE:M0=3.3*10**26 NP1:STRIKE=208;DIP=5;SLIP=-47 NP2:Strike=345;Dip=86;Slip=-94