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File:ISS019E014918 Saint Helena Island.jpg

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原始檔案 (4,288 × 2,848 像素,檔案大小:13.05 MB,MIME 類型:image/jpeg


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描述
English: This astronaut photograph shows the island’s sharp peaks and deep ravines; the rugged topography results from erosion of the volcanic rocks that make up the island. The change in elevation from the coast to the interior creates a climate gradient. The higher, wetter centre is covered with green vegetation, whereas the lower coastal areas are drier and hotter, with little vegetation cover.
Français : Photo de l'île de Sainte Hélène prise par un astronaute de la NASA. On peut voir les pics élevés de l'île et ses ravines profondes. Cette topographie accidentée résulte de l'action de l'érosion sur les roches volcaniques dont l'île est constituée. Le changement d'élévation entre la périphérie et le centre de l'île créé un gradient climatique: le sommet est plus frais et humide, il est couvert de végétation. Les côtes, plus chaudes et sèches, laissent apparaitre la roche nue.


International Space Station InsigniaISS Crew Earth Observations: ISS019-E-14918International Space Station emblem
Identification
Mission ISS019 (Expedition 19)
Roll E
Frame 14918
Country or Geographic Name ATLANTIC OCEAN I(S).
Features ST HELENA I., JAMESTOWN, DIANA PK., FOR., RAVINES
Center Point Latitude -16.0° N
Center Point Longitude -5.7° E
Camera
Camera Tilt
Camera Focal Length 400 mm
Camera Nikon D2Xs
Film 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.
Quality
Percentage of Cloud Cover 11-25%
Nadir What is Nadir?
Date 2009-05-07
Time 08:37:05
Nadir Point Latitude -15.7° N
Nadir Point Longitude -5.5° E
Nadir to Photo Center Direction Southwest
Sun Azimuth 62°
Spacecraft Altitude 193 nautical miles (357 km)
Sun Elevation Angle 26°
Orbit Number 3952
Original image caption
Saint Helena Island, located in the South Atlantic Ocean approximately 1,860 kilometers (1,156 miles) west of Africa, was one of the many isolated islands that naturalist Charles Darwin visited during his scientific voyages in the nineteenth century. He visited the island in 1836 aboard the HMS Beagle, recording observations of the plants, animals, and geology that would shape his theory of evolution. This image was acquired by astronauts onboard the International Space Station as part of an ongoing effort (the HMS Beagle Project to document current biodiversity in areas visited by Charles Darwin.

This astronaut photograph shows the island’s sharp peaks and deep ravines; the rugged topography results from erosion of the volcanic rocks that make up the island. The change in elevation from the coast to the interior creates a climate gradient. The higher, wetter center is covered with green vegetation, whereas the lower coastal areas are drier and hotter, with little vegetation cover. Human presence on the island has also caused dramatic changes to the original plants and animals of the island. Only about 10 percent of the forest cover observed by the first explorers now remains in a semi-natural state, concentrated in the interior highlands.

Saint Helena Island is perhaps best known as the final resting place of Napoleon Bonaparte I of France. Bonaparte was exiled to the island following his defeat at the Battle of Waterloo in 1815; he died on the island six years later in 1821. Today, the island is a British Overseas Territory, with access provided thirty times a year by a single ship, the Royal Mail Ship St. Helena.

日期
來源 ISS Crew Earth Observations: ISS019-E-14918
作者
  • ISS Crew Expedition 19
  • Image Science & Analysis Laboratory, NASA Johnson Space Center
  • Derivative work including removal of noise, grading.: Julian Herzog
其他版本
拍攝地點15° 42′ 00″ 南, 5° 30′ 00″ 西 Kartographer map based on OpenStreetMap.位於此地的本圖片與其他圖片: OpenStreetMapinfo
目標地點16° 00′ 00″ 南, 5° 42′ 00″ 西 Kartographer map based on OpenStreetMap.位於此地的本圖片與其他圖片: OpenStreetMapinfo
本圖像或影音收錄於美國國家航空暨太空總署 (NASA)休士頓太空中心(Johnson Space Center),其照片編號為: ISS019-E-014918

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Public domain 本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zhNASA版權政策JPL圖像使用政策
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遠徵19 繁體中文 (已轉換拼寫)

著作權狀態 繁體中文 (已轉換拼寫)

斷定方法:​美國聯邦政府的作品 繁體中文 (已轉換拼寫)

視角坐標 繁體中文 (已轉換拼寫)

15°42'S, 5°30'W

描述地坐標 中文 (已轉換拼寫)

16°0'S, 5°42'W

ISS019-E-014918

目錄 繁體中文 (已轉換拼寫):​Media catalogue of the Johnson Space Center 英文

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