M 6.6 - 37 km WNW of Tatitlek, Alaska

  • 1983-07-12 15:10:03 (UTC)
  • 61.031°N 147.286°W
  • 37.0 km depth

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Damage (VI) at Valdez. Felt (V) at Chitina, Chugiak, Cooper Landing, Copper Center, Cordova, Fort Richardson, Gakona, Girdwood, Moose Pass, Skwentna, Sutton, Whittier and Willow. Felt (IV) at Anchorage, Palmer and Seward. Felt (III) at Fairbanks and Yakutat. Also felt (III) at Whitehorse, Yukon Territory. [FS]. FAULT PLANE SOLUTION: P-WAVES NP1:STRIKE=233;DIP=65;SLIP=-70 NP2:STRIKE=12;DIP=32;SLIP=-126 PRINCIPAL AXES: (T) PLG=18; AZM=308 (P) PLG=64; AZM=177 COMMENT: Poorly controlled normal fault type mechanism with a fair amount of left-lateral strike-slip component. NP1 designated as the fault plane. MOMENT TENSOR SOLUTION NO OF STA 14 SCALE 10**25 D-CM DEPTH 35 PRINCIPAL AXES: (T) VAL=7.66; PLG=23; AZM=319 (N) VAL=0.17; PLG=25; AZM=61 (P) VAL=-7.83; PLG=54; AZM=192 BEST DOUBLE COUPLE:Mo=7.7*10**25 NP1:STRIKE=9;DIP=31;SLIP=-146 NP2:STRIKE=249;DIP=73;SLIP=-63 CENTROID, MOMENT TENSOR SOLUTION HARVARD EVENT-FILE NAME C071283C DATA USED: GDSN L.P. BODY WAVES: 24S, 62C, T=45 MANTLE WAVES: 11S, 29C, T=135 CENTROID LOCATION: ORIGIN TIME 15:10: 9.3 0.2 LAT 61.15N 0.03;LON 147.19W 0.03 DEP 40.6 1.0;HALF-DURATION 7.0 MOMENT TENSOR; SCALE 10**25 D-CM MRR=-4.81 0.09; MTT=1.34 0.08 MFF=3.47 0.07; MRT=3.29 0.19 MRF=0.87 0.16; MTF=2.04 0.04 PRINCIPAL AXES: 1.(T) VAL=5.36;PLG=15;AZM=308 2.(N) 0.88; 18; 43 3.(P) -6.24; 66; 180 BEST DOUBLE COUPLE:M0=5.8*10**25 NP1:STRIKE=14;DIP=34;SLIP=-123 NP2:Strike=233;Dip=62;Slip=-70

Maximum observed Modified Mercalli Intensity (MMI) VI

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