火星のバイキング軌道色測定画像: 予備的な結果

L A Soderblom

Science (New York, N.Y.)

|October 1, 1976

まとめ

火星の軌道上の画像は,複雑な色の変化を明らかにしています. 明るい火星の領域は,暗い領域よりも高い赤/紫の比率を示し,いくつかの暗いストライクが以前に観察されたよりも青く見える.

科学分野:

惑星科学は惑星科学である.
リモートセンシング (リモートセンサー)
地質学地質学地質学

背景:

火星の表面の組成を理解することは,惑星科学にとって極めて重要です.
以前の地球ベースの測定は,火星の表面特性の特定の色比を示唆しました.
軌道上のデータは,より高い解像度とより包括的なスペクトル情報を提供します.

研究の目的:

火星の軌道画像の色彩再現を行うために.
明るい面と暗い面の赤と紫の比率を分析するために.
火星上の暗黒物質のスペクトル特性の変動を調査する.

主な方法:

火星の軌道上の画像に先端の色彩再構築技術を活用した.
異なる火星表面地域から反射される赤と紫の光の比率を定量化した.
クレーターエジェクタと平原を含む様々なダークマテリアのタイプのスペクトルデータを比較した.

主要な成果:

確認された地球ベースの測定:明るい火星の領域は,暗い領域よりも約1.5倍の赤 / バイオレット比を示しています.
火星のダークマテリアル内の有意なスペクトルの複雑さを明らかにした.
南部のクレーターからの暗い線が,北方赤道平原の暗い物質よりもスペクトル的に青いことを観察しました.

結論:

軌道上の色彩データは,火星の以前の地球ベースのスペクトル解析を検証し,精製しています.
ダークマテリアのスペクトルの多様性は,様々な地質的起源と組成を示唆しています.
火星のダークストライクに関するさらなる調査は,その形成と組成を理解するために正当化されています.

さらに関連する動画

11:34

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

07:05

Applying Hyperspectral Reflectance Imaging to Investigate the Palettes and the Techniques of Painters

Published on: June 18, 2021

関連する概念動画

01:16

Flame Photometry: Lab

In a flame photometer, when a solution like potassium chloride is aspirated into the flame, the solvent evaporates, leaving behind dehydrated salt. This salt dissociates into free gaseous atoms in their ground state. Some of these atoms absorb energy from the flame, leading to their excitation. The excited atoms return to the ground state, emitting photons at characteristic wavelengths. Because only electronic transitions are involved, the resulting emission lines are very narrow. The intensity...

01:25

IR Spectrometers

There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...

01:13

Attenuated Total Reflectance (ATR) Infrared Spectroscopy: Overview

Attenuated total reflectance (ATR) infrared spectroscopy is a powerful analytical technique used to study the composition of materials. It is widely employed in chemistry, materials science, forensic science, and other fields where sample characterization is required. ATR has several advantages over traditional transmission IR spectroscopy, including the requirement of little to no sample preparation and the ability to analyze a wide range of samples.
The ATR process begins by directing a beam...

01:24

IR Spectroscopy: Molecular Vibration Overview

When Infrared (IR) radiation passes through a covalently bonded molecule, the bonds transition from lower to higher vibrational levels. The fundamental vibrational motions that result in infrared absorption can be classified as stretching or bending vibrations.
Stretching vibrations are vibrational motions that occur along the bond line, changing the bond length or distance between two bonded atoms. They are further distinguished as symmetric or asymmetric. In symmetric stretching, the...

01:09

Infrared (IR) Spectroscopy: Overview

When electromagnetic radiation passes through a material, atoms or molecules transition from a lower to a higher energy state by absorbing radiation corresponding to the energy difference between the two states. The absorption of infrared (IR) radiation causes transitions between vibrational energy levels in a molecule. Therefore, IR spectroscopy is a useful analytical tool for determining the molecular structure of molecules.
Different compounds display unique properties due to their...

01:02

Flame Photometry: Overview

Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...

関連する実験動画