Electromagnetic evidence for volatile‐rich upwelling beneath the society hotspot, French Polynesia
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- Noriko Tada
- Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan
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- Pascal Tarits
- UMR‐Domaines Océaniques Institut Universitaire Européen de la Mer Plouzane France
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- Kiyoshi Baba
- Earthquake Research Institute University of Tokyo Tokyo Japan
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- Hisashi Utada
- Earthquake Research Institute University of Tokyo Tokyo Japan
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- Takafumi Kasaya
- Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan
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- Daisuke Suetsugu
- Japan Agency for Marine‐Earth Science and Technology Yokosuka Japan
書誌事項
- 公開日
- 2016-12-03
- 資源種別
- journal article
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1002/2016gl071331
- 公開者
- American Geophysical Union (AGU)
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説明
<jats:title>Abstract</jats:title><jats:p>We have conducted a seafloor magnetotelluric survey that images, for the first time, three‐dimensional electrical conductivity structure in the upper mantle beneath the Society hotspot. A striking feature in our model is a high‐conductivity anomaly a few hundred kilometers in diameter, which is continuous from the lowest part of the upper mantle to a depth of approximately 50 km below sea level. Using theoretical and experimental results from mineral physics, we interpret the high‐conductivity anomaly as evidence of the melt fraction up to 2.2 vol.%, which is robust regardless of assumed temperature, and the existence of carbonated silicate melt beneath the hotspot. Our results suggest that the Society hotspot is a pathway for ascending volatiles from the deeper part of the upper mantle to the surface.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 43 (23), 12021-12026, 2016-12-03
American Geophysical Union (AGU)
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キーワード
詳細情報 詳細情報について
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- CRID
- 1360004229805970176
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- ISSN
- 19448007
- 00948276
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE
