File:Saint Helena Island.jpg

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Immagine di valore

Questa immagine è stata valutata secondo i criteri per le immagini di valore ed è considerata l'immagine di maggior valore su Commons per l'argomento: Saint Helena Island. Puoi vedere la sua valutazione qui.

Descrision
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 Insignia
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 6°
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.

Data
Provenjiensa NASA Earth Observatory
Autore This image was taken by the NASA Expedition 19 crew.
Altre version
  • Uncropped version with different grading.
    Uncropped version with different grading.
Posission de la màchina fotogràfega15° 56′ 59,9″ S, 5° 42′ 00″ O Kartographer map based on OpenStreetMap.La posission de sta qua e de altre imagini su: OpenStreetMapinfo

This photograph was acquired with a Nikon 2DXs digital camera fitted with a 400 mm lens, and is provided by the ISS Crew Earth Observations experiment and Image Science & Analysis Laboratory, Johnson Space Centre.

Picture of week on Czech Wikipedia
Čeština: Tento obrázek byl vybrán jako obrázek týdne na České Wikipedii pro 5. týden roku 2016.
Dansk: Dette billede har været valgt som ugens billede på den Tjekkiske Wikipedia i uge 5, 2016.
Deutsch: Dieses Bild wurde als Bild der Woche auf der tschechischen Wikipedia für die 5 Woche ausgewählt, 2016.
English: This image was selected as a picture of the week on the Czech Wikipedia for 5th week, 2016.
Français : Cette image est sélectionnée en tant qu’image de la semaine sur la Wikipédia Tchèque pour la 5e semaine de 2016.
Italiano: Questa immagine è stata selezionata come Immagine della settimana su Wikipedia in ceco per la V settimana del 2016.
Magyar: Ezt a képet 2016 5. hetében a hét képének választották a cseh Wikipédián.
Svenska: Denna bild valdes som veckans bild på tjeckiskspråkiga Wikipedia för vecka 5, 2016.
Македонски: Сликава е избрана за слика на неделата на чешката Википедија за V недела од 2016 година.
Русский: Эта иллюстрация была выбрана изображением недели в чешском разделе «Википедии» для недели номер 5 2016 года.
Українська: Ця ілюстрація була вибрана зображенням тижня в чеському розділі «Вікіпедії» для тижня номер 5, 2016 року.
العربية : اُختيرت هذه الصُّورة لتكون صُورة الأسبوع في ويكيبيديا التشيكية في الأسبوع 5 في سنة 2016.
 Picture of the week on the Czech Wikipedia

Licensa de doparasion:

Public domain Sto file multimedial el xe 'ntel publico dominio parché el xe stà creà da la NASA. La polìtega del dirito d'autor de la NASA xe che «el material de la NASA no'l xe proteto dal dirito d'autor via de quando altrimenti spesificà». (Polìtega del dirito d'autor de la NASA e polìtega de l'uso de le imagini del JPL Image Use Policy)
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Annotazioni
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Santa Lena

coordinate del punto di vista italian

15°56'59.899"S, 5°42'0.000"W

tempo di esposizione italian

0,001 secondo

rapporto focale italian

4

distansa focałe

400 miłimetro

sensibilità ISO italian

200

Istoria del file

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Data/OraMiniaduraDimensionUtenteComento
In ultima13:28, 23 mar 2015Miniadura de la version de le 13:28, 23 mar 20151 440 × 1 080 (634 KB)Julian HerzogReverted to version as of 18:00, 19 March 2015, rotation was done then.
10:00, 20 mar 2015Miniadura de la version de le 10:00, 20 mar 20151 440 × 1 080 (634 KB)SteinsplitterBotBot: Image rotated by 180°
20:00, 19 mar 2015Miniadura de la version de le 20:00, 19 mar 20151 440 × 1 080 (634 KB)SteinsplitterBotBot: Image rotated by 180°
11:40, 15 xug 2009Miniadura de la version de le 11:40, 15 xug 20091 440 × 1 080 (622 KB)Originalwana{{Information |Description={{en|1=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

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