对敦化地震台2010年9月10日起YRY-4钻孔应变观测曲线异常进行分析，排除干扰的可能性，确认为敦化地区地质活动的真实反映。分析认为，该异常为2011年3月11日13:46:21时日本本州东海岸附近海域9.0级地震孕震过程中，太平洋板块和欧亚板块挤撞的真实反映。

Abstract: We analysis the anomalycurveof YRY - 4 borehole strain observationon September 10, 2010 inDunhua station, Eliminate the possibility caused by the abnormal interference,and confirm it is the true reflectionfor Dunhua area geological activities.The analysis suggests,this anomaly is the true reflectionof the squeezeof Pacific plate and Eurasian plate, during the seismogenic Processin the 9.0 earthquakenear Japaneast coast on 13:46:21, March 3, 2011.