Heat flow on the Nankai Trough off Kumano

DOI 機関リポジトリ Web Site 被引用文献9件 参考文献13件

書誌事項

タイトル別名
  • Heat flow distribution on the floor of Nankai Trough off Kumano and implications for the geothermal regime of subducting sediments
公開日
2008
資源種別
journal article
DOI
  • 10.5918/jamstecr.8.13
公開者
国立研究開発法人海洋研究開発機構

この論文をさがす

説明

During three research cruises (KY05-14, KY07-01 and KY08-01) using JASMTEC R/V KAIYO, we obtained 13 heat flow data with piston core samples across the Nankai Trough and the Kashinosaki Knoll (KK). Subbottom temperatures were measured by precise thermometers attached to the piston corer. Thermal conductivity, color reflectance and vane shear strength were measured for the cored samples onboard KAIYO. Surface heat flow in the Nankai Trough north of KK ranges from 90-135 mW/m2. With the sedimentation effects considered, basal heat flux beneath the Nankai Trough off Kumano is roughly estimated as 100-130 mW/m2, most likely as 120-130 mW/m2. In the Shikoku Basin south of KK, heat flow ranges 120-147 mW/m2, (average∼135 mW/m2), significantly higher than the theoretical value (110 mW/m2) estimated from the age of the Shikoku Basin. Possible cause for the heat flow anomaly is either the postspreading volcanism at KK, thermal disturbance by tectonic compression at KK, or subseafloor fluid migration. More intensive study, including scientific drilling is necessary to estimate the accurate thermal structure of the incoming Shikoku Basin.

収録刊行物

被引用文献 (9)*注記

もっと見る

参考文献 (13)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ