U.S. DEPARTMENT OF THE INTERIOR                                       NO. 3-021
GEOLOGICAL SURVEY                                                  JAN 21, 1993
NEIC QUICK EPICENTER DETERMINATIONS                                            

UTC TIME    LAT     LONG    DEP GS MAGS  SD STA  REGION AND COMMENTS
HRMNSEC                         MB  Msz     USED

JAN 15
110604.9  43.391N 143.244E 100G 6.9 7.0 1.0 131 HOKKAIDO, JAPAN  REGION.
        Mo=5.5*10**20 Nm (PPT). Two people killed, 425 injured and damage (VI
        JMA) at Kushiro, Hokkaido and Hachinohe, Honshu. Felt (V JMA) at Hiroo,
        Nemuro, Obihiro, Otaru and Urakawa; (IV JMA) at Hakodate and Tomakomai;
        (III JMA) at Sapporo, Hokkaido. Also felt (IV JMA) at Aomori and
        Morioka; (III JMA) at Akita, Fukushima, Sendai, Tokyo and Yokohama,
        Honshu. Centroid, Moment Tensor (HRV): Half-duration 23.9 sec; Principal
        axes: (T) Val=6.79, Plg=42, Azm=347; (N) Val=-0.08, Plg=2, Azm=255; (P)
        Val=-6.71, Plg=48, Azm=163; Best double couple: Mo=6.8*10**20 Nm; NP1:
        Strike=107, Dip=4, Slip=-58; NP2: Strike=255, Dip=87, Slip=-92.