A Low Q<sub>ScS</sub> Anomaly Near the South Pacific Superswell

Daisuke Suetsugu

doi:10.1029/2000gl012224

A Low Q<sub>ScS</sub> Anomaly Near the South Pacific Superswell

DOI Web Site Web Site 被引用文献3件

Daisuke Suetsugu

書誌事項

公開日: 2001-01-15

権利情報

http://onlinelibrary.wiley.com/termsAndConditions#vor

DOI

10.1029/2000gl012224

公開者: American Geophysical Union (AGU)

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説明

<jats:p>We analyzed multiple ScS waves from Tonga‐Fiji deep events recorded at the IRIS and SPANET broadband stations to determine lateral variation in attenuation (Q) of the mantle in the South Pacific. We measured average Q values of ScS waves in the mantle between earthquakes and each station, and between two stations. The results of the measurement show that the average Q in the South Pacific is 140. We obtain a very low Q of 70–80 for multiple ScS waves traveling in the South Pacific Superswell, suggesting the existence of higher temperature anomalies in the entire mantle in hot spot regions.</jats:p>