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Q-VALUE AND ITS LATERAL VARIATIONS IN PAN-XI TECTONIC BELT

SUN KE-ZHONG TENG JI-WEN JIN DONG-MIN ZHENG YE(Institute of Geophysics,Academia Sinica, Beijing)  
Based on spectrul analysis (10-30 Hz) of reflections in DSS from mid-crust and Moho discontinuity,distribution of quality factor,Q,in mid and lower crust is obtained.The distribution of Q shows significant variations in lateral and vertical directions.For the upper and lower crust Q=700-900 and 150-400 near Hua-Ping in the west of Pan-Xi tectonic belt,and Q=600-900 and 500-1050 near Hui-Li in the east of the belt.
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