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Determination of seismic attenuation beneath East Sea
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The average QES value is consistent with the previous results obtained in some back-arc regions such as Japan Sea and may suggest a similar termination age of spreading process. However, since the distribution of 90 ray paths can be roughly classified into two directions, northeast-southwest (NE-SW) and northwest-southeast (NW-SE), the average Q values of these two directions are derived to be QNE-SW = 455±109 and QNW-SE = 133±50, respectively.
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