摘要
１９９６年第一季度，全球地震活动仍保持显著的高水平。这是连续保持显著高水平的第四个季度。大洋岛弧地震带接连发生两次Ｍ＿ｓ≥７．７的α级大地震──印尼的米纳哈萨地震和西伊里安地震。美洲地震带本季度的最大地震为墨西哥瓦哈卡Ｍ＿ｓ７．５（中国定）地震。大平洋西北边缘带最大地震为堪察加以东地震，震级Ｍ＿ｓ７．２（中国定），居本季度全球第三位。亚欧带东段（中国境内）发生两次６～７级地震。
During the first quarter of the year 1996,the global seismicity still remained at distinctly high level. It was the fourth quarter of significant high level in succession. Two great earthquakes of class a of Ms≥7. 7 occurred in the Oceanic island-arc seismic belt- the Minahasa and the West Irian earthquakes in Indonesia. The greatest earthquake in the American seismic belt in this quarter was the Oaxaca Ms 7. 5 (measured by Chinese network) earthquake in Mexico. A large earthquake in the north-west margin of the Pacific was the Ms 7. 2 (measured by Chinese network) earthquake occurring to the east of Kamchatka. It is the third largest earthquake of the world in this quarter. Two M 6～7 earthquakes occurred on the east segment of the Eurasian seismic belt (within the boundaries of China ).
出处
《国际地震动态》
1996年第8期18-20,共3页
Recent Developments in World Seismology
关键词
地震活动性
印度尼西亚
墨西哥
中国
地震带
global seismicity
Indonesia
Mexico
China
West Irian
Oceanic island-arc seismic belt
