就差那麼一小時，早上11點我剛從基下火車回花蓮氶遇到這場地震呢

這次規模算有災害性的  但因為深度深
地表震度較小
這次地震 是不是琉球海溝造成的呀?

Earthquake Details

    This event has been reviewed by a seismologist.

Magnitude        5.5
Date-Time       

    Sunday, October 30, 2011 at 03:23:45 UTC
    Sunday, October 30, 2011 at 12:23:45 PM at epicenter
    Time of Earthquake in other Time Zones

Location        25.361°N, 123.004°E
Depth        215.7 km (134.0 miles)
Region        NORTHEAST OF TAIWAN
Distances        143 km (88 miles) NE of Su'ao, Taiwan
152 km (94 miles) ENE of TAIPEI, Taiwan
161 km (100 miles) NW of Ishigaki-jima, Ryukyu Islands, Japan
1209 km (751 miles) N of MANILA, Philippines
Location Uncertainty        horizontal +/- 13.1 km (8.1 miles); depth +/- 8.1 km (5.0 miles)
Parameters        NST=287, Nph=322, Dmin=99.1 km, Rmss=1.04 sec, Gp= 22°,
M-type=regional moment magnitude (Mw), Version=6
Source       

    Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)

Event ID        usb0006ggh
USGS為什麼規模不一樣?