天文台の記事

A view from the top of the Great Escarpment in the Karoo National Park near Beaufort West, looking south across the plains of the Lower Karoo: Note the remnants and extent of the former central plateau on the plain below the escarpment (see diagram on the right). Also note the dolerite sills which top the escarpment and mountains in the middle distance, giving these structures their characteristic flat-topped appearance.

カルー地方の地質と生態系南アフリカの広大な半乾燥地帯

カルー南アフリカ地質学カルー超層群

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SOFIA成層圏を舞う巨大赤外線天文台の軌跡

SOFIANASA赤外線天文学ボーイング747SP

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To illustrate Mauna Kea's dry prominence, imagine raising the sea level of the Pacific Ocean to submerge the top of Mauna Kea. Then slowly lower it again. The first thing to appear is the peak of Mauna Kea. Then Mauna Loa and peaks of the surrounding Hawaiian Islands will emerge from the ocean. If the ocean drains further, the island around Mauna Kea will grow and merge with the adjacent islands. Continue draining until a land bridge forms between the Hawaiian Islands and a continent so that it is possible to walk all the way there without getting wet. Stop draining at this point, and this bridge is the key col of a dry Mauna Kea, connecting it to Mount Everest. Mauna Kea's peak stands 30,610 ft (9,330 m) above this key col.

マウナケア山の全貌ハワイの最高峰が持つ地質学的価値と天文学的重要性

マウナケアハワイ楯状火山天文台

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Snow in Paranal Observatory at 2,600 masl[19]

アタカマ砂漠地球上で最も乾燥した地が秘める科学と自然の驚異

アタカマ砂漠チリ世界で最も乾燥した場所ALMA

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