タグ

リモートセンシング

18 件の記事

This 1848 "Sketch showing the actual elevation of the Snow Line in different Latitudes" by Alexander Keith Johnston shows the snow lines of mountains in America, Europe and Asia.

雪線(スノーライン)の定義と地理的変動のメカニズム

雪線気候的雪線永久雪線氷河
Water cycle of the Earth's surface, showing the individual components of transpiration and evaporation that make up evapotranspiration. Other closely related processes shown are runoff and groundwater recharge.

蒸発散(ET)の仕組みと水資源管理への影響

蒸発散蒸発蒸散水サイクル
A topographic map of Stowe, Vermont with contour lines

地形学(トポグラフィー)の基礎知識地表の形状を解析する科学と技術

地形学トポグラフィーDEM数値標高モデル
A VNIR image of the Ghadamis River in Libya. This is a false-color composite image made using near-infrared, green, and blue wavelengths.

VNIR(可視・近赤外線)スペクトルの基礎とリモートセンシングへの応用

VNIR可視光線近赤外線リモートセンシング
An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light. A white beam source – emitting light of multiple wavelengths – is focused on a sample (the complementary color pairs are indicated by the yellow dotted lines). Upon striking the sample, photons that match the energy gap of the molecules present (green light in this example) are absorbed in order to excite the molecule. Other photons transmit unaffected and, if the radiation is in the visible region (400–700 nm), the sample color is the complementary color of the absorbed light. By comparing the attenuation of the transmitted light with the incident, an absorption spectrum can be obtained.

吸収分光法物質の正体を明かす光の解析技術

吸収分光法電磁波分光分析量子状態
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地球観測の歴史宇宙から見た故郷の変遷

地球観測宇宙写真NASAアポロ計画
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地球観測の歴史宇宙から見た故郷の変遷

地球観測宇宙写真NASAアポロ計画
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地球観測(EO)の仕組みと現代社会における重要性

地球観測EOリモートセンシング衛星観測
An overview of electromagnetic radiation absorption. This example discusses the general principle using visible light. A white beam source – emitting light of multiple wavelengths – is focused on a sample (the complementary color pairs are indicated by the yellow dotted lines). Upon striking the sample, photons that match the energy gap of the molecules present (green light in this example) are absorbed in order to excite the molecule. Other photons transmit unaffected and, if the radiation is in the visible region (400–700 nm), the sample color is the complementary color of the absorbed light. By comparing the attenuation of the transmitted light with the incident, an absorption spectrum can be obtained.

吸収分光法光の吸収から物質の正体を突き止める分析技術

吸収分光法電磁波分光分析Beer-Lambert法
Multispectral image of part of the Mississippi River obtained by combining three images acquired at different nominal wavelengths (800nm/infrared, 645nm/red, and 525nm/green) by Apollo 9 in 1969.

マルチスペクトルイメージングの仕組みと多角的な活用事例

マルチスペクトルイメージングリモートセンシング分光イメージングハイパースペクトル
Landsat 7, launched in 1999, is the 7th of 9 satellites in the Landsat program.

Landsatプログラム半世紀にわたる地球観測の軌跡と科学的貢献

Landsatリモートセンシング地球観測衛星NASA
Six Earth observation satellites comprising the A-train satellite constellation as of 2014

地球観測衛星の仕組みと役割宇宙から地球を読み解く技術

地球観測衛星リモートセンシング低軌道静止軌道