翻訳と辞書 Words near each other ・ Lithospermum canescens ・ Lithospermum caroliniense ・ Lithospermum cuzcoensis ・ Lithospermum erythrorhizon ・ Lithospermum incisum ・ Lithospermum latifolium ・ Lithospermum leymebambensis ・ Lithospermum molle ・ Lithospermum officinale ・ Lithospermum prostratum ・ Lithospermum purpurocaeruleum ・ Lithospermum rodriguezii ・ Lithospermum ruderale ・ Lithosphere ・ Lithosphere (album) ・ Lithosphere-Asthenosphere boundary ・ Lithospheric drip ・ Lithospheric flexure ・ Lithostege ・ Lithostege farinata ・ Lithostege fissurata ・ Lithostege griseata ・ Lithostratigraphy ・ Lithostrotia ・ Lithostrotion ・ Lithostygnus ・ Lithotelestidae ・ Lithoteng ・ Lithothamnion ・ Lithothelium Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Lithosphere-Asthenosphere boundary ： ウィキペディア英語版 Lithosphere-Asthenosphere boundary The Lithosphere- Asthenosphere boundary represents a mechanical difference between layers in Earth’s inner structure. Earth’s inner structure can be described both chemically (crust, mantle, core) and mechanically. The Lithosphere-Asthenosphere boundary (referred to as the LAB by geophysicists) lies between Earth's cooler, rigid lithosphere and the warmer, ductile asthenosphere. The actual depth of the boundary is still a topic of debate and study, although it is known to vary according to the environment. ==Defining the LAB== The LAB is determined from the differences in the lithosphere and asthenosphere including, but not limited to, differences in grain size, chemical composition, thermal properties, and extent of partial melt; these are factors that affect the rheological differences in the lithosphere and asthenosphere. The lithoshpere-asthenosphere boundary represents a rheological boundary. Colder temperatures at Earth's shallower depths affect the viscosity and strength of the lithosphere. Colder material in the lithosphere resists flow while the "warmer" material in the asthenosphere contributes to its lower viscosity. The increase in temperature with increasing depth is known as the geothermal gradient and is gradual within the rheological boundary layer. The lithosphere is the portion of the thermal boundary layer commonly defined by its purely conductive heat transport. Throughout the rheological boundary, the geotherm gradually transitions from the conductive nature of the lithospheric geotherm to the convective (adiabatic) nature of the underlying asthenosphere. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Lithosphere-Asthenosphere boundary」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.