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首页> 外文期刊>Earth, planets and space: EPS >Imaging the high b-value anomalies within the subducting Pacific plate in the Hokkaido corner
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Imaging the high b-value anomalies within the subducting Pacific plate in the Hokkaido corner

机译：成像北海道一角俯冲太平洋板块内的高b值异常

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The frequency-magnitude distribution (b-value) for seismicity within the Pacific plate is not definitely homogeneous. An anomaly of b-value higher than 0.9 is detected within the descending Pacific plate in the Hokkaido corner. In the western Hokkaido, the anomaly exists at a depth of about 150 km, which is directly beneath active volcanoes. In the eastern Hokkaido, the anomalies exist at approximately 200 and 300 km depths, which is tens of kilometers sideways from active volcanoes. The results obtained in this paper are more reliable than previous studies on b-value heterogeneity within descending plates, since I used a catalog homogeneous, both in time and space, which was obtained through re-examination of all seismograms and relocation of hypocentral parameters based on arrival times from fixed seismic stations.
机译：太平洋板块内地震活动的频率-幅度分布（ b -值）肯定不是均匀的。在北海道拐角处下降的太平洋板块中检测到 b 值高于0.9的异常。在北海道西部，距今约150 km的深度存在于该异常火山的正下方。在北海道东部，异常存在于大约200和300 km的深度，距活跃火山的侧面有几十公里。本文中获得的结果比以前关于下降板中 b 值异质性的研究更为可靠，因为我使用了在时间和空间上均一的目录，这是通过重新检查所有地震图和基于来自固定地震台站的到达时间的重心参数重定位。

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