全部书籍

1 Primary & Middle School Mathematics1–9 年级在线 2 High School Mathematics10–12 年级在线 3 University Mathematics — Year 1本科一年级在线 4 University Mathematics — Year 2本科二年级在线 5 University Mathematics — Year 3本科三年级在线

1 Primary & Middle School Physics1–9 年级在线 2 High School Physics10–12 年级在线 3 University Physics — Year 1本科一年级在线 4 University Physics — Year 2本科二年级在线 5 University Physics — Year 3本科三年级在线

1 School Chemistry — Grades 1 to 121–12 年级在线 2 University Chemistry — Year 1本科一年级在线 3 University Chemistry — Year 2本科二年级在线 4 University Chemistry — Year 3本科三年级在线

1 Primary & Middle School Biology1–9 年级在线 2 High School Biology10–12 年级在线 3 University Biology — Year 1本科一年级在线 4 University Biology — Year 2本科二年级在线 5 University Biology — Year 3本科三年级在线

1 Primary & Middle School Earth and Space Sciences1–9 年级在线 2 High School Earth and Space Sciences10–12 年级在线 3 University Earth and Space Sciences — Year 1本科一年级在线 4 University Earth and Space Sciences — Year 2本科二年级在线 5 University Earth and Space Sciences — Year 3本科三年级在线

1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

全部游戏 Math Fuse Word Reactor Atlas Dash

应用关于

Coach

English Français Español Nederlands Português हिन्दी العربية Bahasa Indonesia 简体中文 বাংলা

登录开始阅读

书籍暂未推出简体中文版——当前显示英文版。

Earth and Space Sciences · 术语表

什么是 Flexural parameter, forebulge？

又称： flexural parameter · forebulge

Definition 3.15 University Earth and Space Sciences — Year 3 · 第 3 章 — Gravity and the Figure of the Earth

The flexural parameter of a plate is the length

\alpha = \left(\frac{4D}{(\rho_m - \rho_i)g}\right)^{1/4},

which sets the horizontal scale of its flexure. The forebulge is the low arch of upward flexure that a bent plate raises beyond the moat or basin next to its load.

Flexure of an elastic plate (computed; E = 100\, GPa, = 0.25, mantle 3300\, kg\, m-3, water in the moat; vertical scale greatly exaggerated). (a) Under the load of a volcanic ridge (4.17 × 1012\, N\, m-1), a thin plate sinks deeply and narrowly, a thick one shallowly and widely; the forebulge moves out from 112\, km to 316\, km. (b) A plate broken at a trench and pushed down by 1\, km: the outer rise stands 67\, m high, 167\, km from the trench. — Flexure of an elastic plate (computed; $E = 100\,\mathrm{GPa}$ , $\nu = 0.25$ , mantle $3300\,\mathrm{kg}\,\mathrm{m}^{-3}$ , water in the moat; vertical scale greatly exaggerated). (a) Under the load of a volcanic ridge ( $4.17 \times 10^{12}\,\mathrm{N}\,\mathrm{m}^{-1}$ ), a thin plate sinks deeply and narrowly, a thick one shallowly and widely; the forebulge moves out from $112\,\mathrm{km}$ to $316\,\mathrm{km}$ . (b) A plate broken at a trench and pushed down by $1\,\mathrm{km}$ : the outer rise stands $67\,\mathrm{m}$ high, $167\,\mathrm{km}$ from the trench.

在原文中阅读 →