火星の大気中の熱潮:理論の検証

R W Zurek, C B Leovy

Science (New York, N.Y.)

|July 24, 1981

まとめ

火星火星火星火星

科学分野:

惑星科学は惑星科学である.
大気科学大気科学
エアロノミーは,エアロノミーです.

背景:

火星の大気は,毎日の表面圧力振動を示しています.
ヴァイキング着陸機は1977年の火星の砂嵐の間に重要な圧力データを提供した.

研究の目的:

大気潮理論を用いて,火星上の観測された毎日の表面圧力振動を説明する.
バイキングランダー1の昼間潮の異常な消失を調査する.

主な方法:

古典的な大気潮理論の適用,もともと地球の大気のために開発された.
火星の砂塵の嵐の間にバイキングランダー1からの圧力測定の分析.

主要な成果:

観測された圧力振動は,古典的な大気潮理論と一致しています.
ユニークなイベントは,バイキングランダー1で昼間潮の実質的な消失を示しました.
この消失は,西に移動する潮と東に移動するケルビンモードの間の破壊的な干渉の結果でした.

結論:

古典的な大気潮理論は,火星の大気圧の振動を説明できる.
オーログラフィック差分加熱は,ケルビンモードを生成し,潮パターンに影響を与える可能性があります.
バイキングランダー1号のデータとモデルは,将来の火星の砂嵐を監視することができます.

さらに関連する動画

06:29

Simulation of Early Earth Hydrothermal Chimneys in a Thermal Gradient Environment

Published on: February 27, 2021

関連する概念動画

01:06

Tidal Forces

The origin of Earth's ocean tides has been a subject of continuous investigation for over 2000 years. However, the work of Newton is considered to be the beginning of the proper understanding of the phenomenon. Ocean tides are the result of gravitational tidal forces. These same tidal forces are present in any astronomical body; they are responsible for the internal heat that creates the volcanic activity on Io, one of Jupiter's moons, and the breakup of stars that get too close to black holes.

01:15

Torque Free Motion

The torque-free motion refers to the movement of a rigid body in space when no external torques are acting upon it. This type of motion can be observed in environments where there are no external forces or frictions, like in outer space. For example, a rotation of Mars in space is a torque-free motion. Mars is an axisymmetric object, meaning it has an axis of symmetry along which it rotates, designated as the z-axis. The rotating frame of reference is defined such that the center of mass of...

01:20

Momentum And Radiation Pressure

An object absorbing an electromagnetic wave would experience a force in the direction of propagation of the wave. This force occurs because electromagnetic waves contain and transport momentum. The force accounts for the wave's radiation pressure exerted on the object. Maxwell's prediction was confirmed in 1903 by Nichols and Hull by precisely measuring radiation pressures with a torsion balance. The measuring instrument had mirrors suspended from a fiber kept inside a glass container. Nichols...

01:12

Kinetic Theory of an Ideal Gas

A mole is defined as the amount of any substance that contains as many molecules as there are atoms in exactly 12 grams of carbon-12. An Italian scientist Amedeo Avogadro (1776–1856) formed the hypothesis that equal volumes of gas at equal pressure and temperature contain equal numbers of molecules, independent of the type of gas. Later, the hypothesis was developed to form the SI unit for measuring the amount of any substance.
The number of molecules in one mole is called Avogadro's number...

01:17

Space-Time Curvature and the General Theory of Relativity

In 1905, Albert Einstein published his special theory of relativity. According to this theory, no matter in the universe can attain a speed greater than the speed of light in a vacuum, which thus serves as the speed limit of the universe.
This has been verified in many experiments. However, space and time are no longer absolute. Two observers moving relative to one another do not agree on the length of objects or the passage of time. The mechanics of objects based on Newton's laws of motion,...

02:34

Kinetic Molecular Theory and Gas Laws Explain Properties of Gas Molecules

The test of the kinetic molecular theory (KMT) and its postulates is its ability to explain and describe the behavior of a gas. The various gas laws (Boyle’s, Charles’s, Gay-Lussac’s, Avogadro’s, and Dalton’s laws) can be derived from the assumptions of the KMT, which have led chemists to believe that the assumptions of the theory accurately represent the properties of gas molecules.

関連する実験動画