Cooling of the Earth′s Mantle by Plate Subduction--Importance of Pressure-and Stress-Dependent Rheology
-
- Nakakuki Tomoeki
- Department of Earth and Planetary Systems Science, Hiroshima University
書誌事項
- タイトル別名
-
- Cooling of the Earth's Mantle by Plate Subduction. Importance of Pressure- and Stress-Dependent Rheology.
- Cooling of the Earth s Mantle by Plate
この論文をさがす
説明
Numerical simulation of 2-D mantle convection with variable viscosity is performed to examine the effect of plate subduction on cooling of the Earth's mantle. We employ temperature-, pressure-, and stress-dependent viscosity in order to realize plate-like motion and subduction of a cold thermal boundary layer at the surface. Our model predicts that the velocity of surface plates strongly depends on the viscosity of the mantle interior, at least when the viscosity of the mantle strongly depends on the pressure. As a result, the heat transfer of the Earth's mantle strongly couples with the temperature, and the Earth cools slowly. This is consistent with past mantle temperatures derived from petrological data. It also suggests the possibility that the Earth has a higher Urey ratio than that inferred from measurements of terrestrial heat flow combined with geochemical data.
収録刊行物
-
- Journal of Physics of the Earth
-
Journal of Physics of the Earth 45 (3), 189-201, 1997
公益社団法人 日本地震学会、特定非営利活動法人 日本火山学会、日本測地学会
- Tweet
詳細情報 詳細情報について
-
- CRID
- 1390001206510109696
-
- NII論文ID
- 10002428941
-
- NII書誌ID
- AA00704960
-
- ISSN
- 18842305
- 00223743
-
- NDL書誌ID
- 4326371
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDLサーチ
- Crossref
- CiNii Articles
- OpenAIRE
-
- 抄録ライセンスフラグ
- 使用不可