| IRIS台网地震仪资料出现2010年1月12日海地大地震"震前扰动现象" |
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| 引用本文： | 胡小刚,薛秀秀,郝晓光.IRIS台网地震仪资料出现2010年1月12日海地大地震"震前扰动现象"[J].地球物理学进展,2010,25(1):134-136. |
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| 作者姓名： | 胡小刚 薛秀秀 郝晓光 |
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| 作者单位： | 中国科学院测量与地球物理研究所,动力大地测量学重点实验室,武汉,430077 |
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| 基金项目： | 国家自然科学基金，湖北省自然科学基金，中国地震局地震预测研究所专项基金，国家科技支撑计划项目 |
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| 摘 要： | 2010年1月12日，加勒比岛国海地爆发了Mw7.0级大地震.震中附近的宽带地震仪记录在1月10—1月12日观测到了显著的“震前扰动”现象.扰动信号的周期为3~10秒.北美大陆的宽带地震仪也记录到了类似的扰动信号.海地大地震“震前扰动”发生期间，加勒比海域及周围海域没有发生任何海洋风暴.海地大地震的“震前扰动”是由某种非台风因素引发的.
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| 关 键 词： | 2010海地大地震 宽带地震仪 震前扰动 |
| 收稿时间： | 2010-01-18 |
| 修稿时间： | 2010-02-06 |
Observation of microseism in IRIS records before the 2010-01-12 Haiti earthquake |
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| HU Xiao-gang,XUE Xiu-xiu,HAO Xiao-guang.Observation of microseism in IRIS records before the 2010-01-12 Haiti earthquake[J].Progress in Geophysics,2010,25(1):134-136. |
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| Authors: | HU Xiao-gang XUE Xiu-xiu HAO Xiao-guang |
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| Abstract: | On Jan.12, 2010 the Mw 7.0 earthquake struck the Caribbean island country of Haiti. We found that significant fore-seismic tremor signals were observed during Jan.10~12 by broadband seismometers near the epicenter and these far away in the North American continent. The periods the signals are mainly in the band of 3~10 s. January is not Atlantic hurricane season and no strong tropical storms were found on the Caribbean Sea, the Gulf of Mexico and the Atlantic in Jan.10~12, which means the tremor is a microseism not induced by storms. |
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| Keywords: | the2010greatHaitiearthquake broadbandseismometer fore-seismicdisturbance |
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