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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Burning Index ： ウィキペディア英語版 Burning Index Burning Index (BI) is a number used by the National Oceanic and Atmospheric Administration (NOAA) to describe the potential amount of effort needed to contain a single fire in a particular fuel type within a rating area. The National Fire Danger Rating System (NFDRS) uses a modified version of Bryam's equation for flame length - based on the Spread Component (SC) and the available energy (ERC) - to calculate flame length from which the Burning Index is computed.〔http://www.wrh.noaa.gov/sew/fire/olm/nfdr_ind.htm〕 The equation for flame length is listed below:〔 ::$F\_L=j\backslash left\; ((25(ERC))\backslash right)^$ where: :''j'' is a scaling factor, :''SC'' is the spread component, :and ''ERC'' is the Energy Release Component. Consequently, the equation for the Burning Index is:〔 ::$BI=j\_1\backslash \; F\_L$ where $j\_1$ is the Burning Index scaling factor of (10/ft). Therefore, dividing the Burning Index by 10 produces a reasonable estimate of the flame length at the head of a fire. A unique Burning Index (BI) table is required for each fuel model.〔 ==References== 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「Burning Index」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.