概括
在南非附近观察到的两次反旋风旋表明,印度洋的水量大量流入大西洋. 这种海洋学交换可能通过热量转移影响全球气候模式.
科学领域:
- 海洋学 海洋学 海洋学
- 气候科学 气候科学
- 地质物理学 地质物理学
背景情况:
- 在阿古拉斯逆转曲线以西观察到反气旋旋.
- 这些旋似乎是在逆转时产生的.
- 在开普敦以西南的一个西部,呈现出一个冷却的核心,被温暖的印度洋水所包围.
研究的目的:
- 调查印度洋热带水运输到南大西洋的发生和影响.
- 评估这种整个海洋交换对全球气候模式的潜在影响.
主要方法:
- 在1983年11月至12月的观察研究.
- 分析地质运输和水的特性.
主要成果:
- 测量了印度洋热带水 (14 x 10^6 m^3 / s) 净地质流向南大西洋的地质流.
- 这种印度-大西洋热带交换被认为是一种常见的现象.
- 温暖的印度洋水的涌入代表了大西洋的显著热量输入 (2.3 x 10^13到47 x 10^13瓦).
结论:
- 在阿古拉斯反射中,海洋间的质量和热量交换是一个明显的可能性.
- 这种交换显著影响全球气候模式.
- 关于回流通路的不确定性存在 (南大西洋热带水与北大西洋深水).
相关概念视频
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The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
The boiling point of a liquid is the temperature at which its vapor pressure is equal to ambient atmospheric pressure. Since the vapor pressure of a solution is lowered due to the presence of nonvolatile solutes, it stands to reason that the solution’s boiling point will subsequently be increased. Vapor pressure increases with temperature, and so a solution will require a higher temperature than will pure solvent to achieve any given vapor pressure, including one...
Freezing Point Depression and Boiling Point Elevation
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Isothermal Processes
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An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
An ideal gas can also undergo isothermal expansion or compression.
For example, consider 1 mole of an ideal gas inside an isolated cylinder at initial volume V...
Joule-Thomson Effect
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This experiment forces high-pressure gas through a throttle valve or a porous plug to a lower-pressure region. The gas expands as it passes through to...
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Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
Isochoric and Isobaric Processes
A thermodynamic process that occurs at constant volume is called an isochoric process. According to the first law of thermodynamics, heat supplied or removed from the system is partially utilized to perform work and change the internal energy of the system. However, in an isochoric process, the volume remains constant. Hence, the work done by the system is zero. Therefore, the exchange of heat changes the internal energy of the system only.
Suppose 1000 g of water is heated from 40 degrees...
Suppose 1000 g of water is heated from 40 degrees...


