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Green Valley is a region on Mars within Vastitas Borealis that was chosen as the landing site of NASA's Phoenix lander. It is located at 68.35 degrees north, 233 degrees east. The valley is about 50 kilometres wide but only about 250 metres deep; either it was filled in or was never any deeper than that. The edges are not visible from the middle of the valley. Shortly before Phoenix's scheduled landing, the Mars Reconnaissance Orbiter photographed a pair of kilometer-tall dust devils in the Green Valley area.

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  • Green Valley is a region on Mars within Vastitas Borealis that was chosen as the landing site of NASA's Phoenix lander. It is located at 68.35 degrees north, 233 degrees east. The valley is about 50 kilometres wide but only about 250 metres deep; either it was filled in or was never any deeper than that. The edges are not visible from the middle of the valley. The name "Green Valley" is not officially recognised by the International Astronomical Union. It came from the decision process by which it was selected as Phoenix's landing site: prospective landing areas were color-coded based on how hazardous they were, with red being most hazardous through yellow to green being the safest. Green Valley has relatively few of the large boulders that could have tipped the lander if it had hit one during touchdown. The ground within Green Valley is covered with polygonal features several metres across and roughly ten centimetres high, thought to be caused either by thermal contraction (ice-wedge polygons) or by the effects of wind-blown dust (sand-wedge polygons). Water ice is thought to be just below the surface. During the local winter as much as three feet of carbon dioxide ice is expected to appear on the surface. Shortly before Phoenix's scheduled landing, the Mars Reconnaissance Orbiter photographed a pair of kilometer-tall dust devils in the Green Valley area. (en)
  • グリーンバレー(英語: Green Valley )は、 NASAのフェニックス着陸船の着陸地点として選ばれた内の火星の地域。北緯68.35度、東経233度に位置している。谷の幅は約50キロメートルと広いが、深さはわずか250メートル位である。どちらかが満たされたか、それよりも深くなることはなく、谷の中央からは縁が見えない。 「グリーンバレー」という名前は、国際天文学連合によって公式に認められていない。これは、フェニックスの着陸地点として選択された決定プロセスに由来する。予想される着陸エリアは、危険度に基づいて色分けされ、赤が最も危険で、黄色から緑が最も安全である。グリーンバレーには、着陸時に着陸船をひっくり返す可能性のある大きな岩が比較的少ない。 グリーンバレー内の地面は、幅数メートル、高さ約10センチの多角形の特徴で覆われている。これは、熱収縮(氷楔多角形土)または風に吹かれた塵の影響(砂楔多角形土)のいずれかが原因であると考えられ、水氷は地表のすぐ下にあると考えられている。冬の期間、3フィートもの二酸化炭素氷が表面に現れると予想される。 フェニックスが着陸する直前に、マーズ・リコネッサンス・オービターはグリーンバレー地域で高さ1キロの塵旋風を撮影した。 (ja)
  • O Vale Verde é uma região em Marte situada em Vastitas Borealis que foi escolhida como local de pouso do aterrissador Phoenix, da NASA. Sua localização é 68.35º latitude norte, e 233º longitude leste. O vale possui aproximadamente 50 km de largura, mas apenas 250 m de profundidade; o que pode ser devido à deposição de sedimentos, ou talvez o vale nunca tenha sido mais profundo que isto. As bordas não são visíveis do meio do vale. O nome "Vale Verde" não é oficialmente reconhecido pela União Astronômica Internacional. Seu nome é decorrente do processo de escolha do local de pouso da Phoenix: áreas de aterrissagem eram realçadas em diferentes cores baseando-se no grau de risco que elas ofreciam, em que vermelho representava os locais mais arriscados, passando pelo amarelo, e verde sendo os mais seguros. O vale Verde possui relativamente poucos dos grandes boulders que poderiam fazer com que o aterrissador encalhasse, caso este pousasse sobre um durante a aterrissagem. O solo no interior do Vale Verde é coberto por formações poligonais medindo vários metros de diâmetro e algumas dezenas de centímetros de altura, especula-se que eles se formem por ciclos repetidos de congelamento e expansão (polígonos de cunha glacial) ou pelos efeitos da poeira soprada pelo vento. Acredita-se que haja gelo de água logo abaixo da superfície. Durante o inverno local até três pés de gelo de dióxido de carbono se deposita na superfície. Pouco antes da aterrissagem programada da Phoenix, a Mars Reconnaissance Orbiter fotografou um par de redemoinhos quilométricos na região do Vale Verde. (pt)
  • 位於火星北方大平原的綠谷(Green Valley)是 NASA 選擇的凤凰号火星探测器登陸地點。該區域中心座標68.35°N,233°E。綠谷的寬度約50公里,但深度只有約250公尺。這可能是因為沉積物沉積或者是它本身從未是深谷。從綠谷中段起無法看到它和其他區域的明顯邊緣。 (zh)
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  • HiRISE image of a patch of land in the Green Valley region showing scattered small boulders and a polygonal fracture pattern. (en)
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  • Green Valley (en)
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  • Informal name based on danger assessment map color (en)
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  • グリーンバレー(英語: Green Valley )は、 NASAのフェニックス着陸船の着陸地点として選ばれた内の火星の地域。北緯68.35度、東経233度に位置している。谷の幅は約50キロメートルと広いが、深さはわずか250メートル位である。どちらかが満たされたか、それよりも深くなることはなく、谷の中央からは縁が見えない。 「グリーンバレー」という名前は、国際天文学連合によって公式に認められていない。これは、フェニックスの着陸地点として選択された決定プロセスに由来する。予想される着陸エリアは、危険度に基づいて色分けされ、赤が最も危険で、黄色から緑が最も安全である。グリーンバレーには、着陸時に着陸船をひっくり返す可能性のある大きな岩が比較的少ない。 グリーンバレー内の地面は、幅数メートル、高さ約10センチの多角形の特徴で覆われている。これは、熱収縮(氷楔多角形土)または風に吹かれた塵の影響(砂楔多角形土)のいずれかが原因であると考えられ、水氷は地表のすぐ下にあると考えられている。冬の期間、3フィートもの二酸化炭素氷が表面に現れると予想される。 フェニックスが着陸する直前に、マーズ・リコネッサンス・オービターはグリーンバレー地域で高さ1キロの塵旋風を撮影した。 (ja)
  • 位於火星北方大平原的綠谷(Green Valley)是 NASA 選擇的凤凰号火星探测器登陸地點。該區域中心座標68.35°N,233°E。綠谷的寬度約50公里,但深度只有約250公尺。這可能是因為沉積物沉積或者是它本身從未是深谷。從綠谷中段起無法看到它和其他區域的明顯邊緣。 (zh)
  • Green Valley is a region on Mars within Vastitas Borealis that was chosen as the landing site of NASA's Phoenix lander. It is located at 68.35 degrees north, 233 degrees east. The valley is about 50 kilometres wide but only about 250 metres deep; either it was filled in or was never any deeper than that. The edges are not visible from the middle of the valley. Shortly before Phoenix's scheduled landing, the Mars Reconnaissance Orbiter photographed a pair of kilometer-tall dust devils in the Green Valley area. (en)
  • O Vale Verde é uma região em Marte situada em Vastitas Borealis que foi escolhida como local de pouso do aterrissador Phoenix, da NASA. Sua localização é 68.35º latitude norte, e 233º longitude leste. O vale possui aproximadamente 50 km de largura, mas apenas 250 m de profundidade; o que pode ser devido à deposição de sedimentos, ou talvez o vale nunca tenha sido mais profundo que isto. As bordas não são visíveis do meio do vale. Pouco antes da aterrissagem programada da Phoenix, a Mars Reconnaissance Orbiter fotografou um par de redemoinhos quilométricos na região do Vale Verde. (pt)
rdfs:label
  • Green Valley (Mars) (en)
  • グリーンバレー (火星) (ja)
  • Vale Verde (Marte) (pt)
  • 綠谷 (火星) (zh)
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