Transition zone structure under a stationary hot spot: Cape Verde

George Helffrich, Bruno Faria, João F.B.D. Fonseca, Alexandra Lodge, Satoshi Kaneshima

研究成果: Contribution to journalArticle査読

21 被引用数 (Scopus)

抄録

We report on a two-year seismic deployment in the Cape Verde Islands, one goal of which was to study the upper mantle to determine its structure under a hot spot that is stationary in the hot spot reference frame. We find from analysis of P-to-S receiver functions estimated from broadband seismic recordings that, within uncertainty, the time separation between the 410 and 660 km discontinuities is normal compared to radial earth models. Thus, to exist, even stationary hot spots do not require vertical thermal anomalies from deep melting sources anchored in the lower mantle or at the core-mantle boundary or their anomalies are narrower than ∼ 250 km in the upper mantle.

本文言語英語
ページ(範囲)156-161
ページ数6
ジャーナルEarth and Planetary Science Letters
289
1-2
DOI
出版ステータス出版済み - 1 15 2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • 地球物理学
  • 地球化学および岩石学
  • 地球惑星科学(その他)
  • 宇宙惑星科学

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