Fichièr:Kerguelen Islands satfoto.jpg

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Kerguelen_Islands_satfoto.jpg(720 × 480 pixèl, talha del fichièr: 167 Ko, tipe MIME: image/jpeg)

Descripcion
English: The Kerguelen Islands are an overseas territory of France. But their far-off location in the southern Indian Ocean places these islands far closer to Antarctica than to mainland Europe. In fact, the islands are so remote and the landscape so harsh that they have also been called the “Desolation Islands.”

On October 28, 2016, the Moderate Resolution Imaging Spectroradiometer (MODIS) instrument on NASA’s Terra satellite captured this natural-color image of the Kerguelen Islands. Grande Terre (French for “large land”) is the most sizeable in the island group. Its steep fjords and peninsulas are ringed by hundreds of smaller islands, which bring the archipelago’s total land area to 7215 square kilometers (2,786 square miles).

Penguin and seal populations are among the wildlife that thrive on Grande Terre. But because of its remoteness—and the severely cold, windy weather—you won’t find many people. Most residents of the island are scientists based in the settlement of Port-aux-Français, where they study everything from geology and biology to weather and climate.

One area of research involves the myriad bodies of ice. Researchers have shown that between 1963 and 2001, ice-covered areas of the Kerguelen Islands shrank by 21 percent—a phenomenon that’s in-line with what’s happening in Patagonia, South Georgia, and other sub-polar latitudes. Over the same span, the Cook Ice Cap (center) shrank from 501 to 403 square kilometers. And the losses have continued: Subsequent research published in Nature noted that glacier wastage on the islands during the 2000s was “among the most dramatic on Earth.” The main reason was less precipitation and drier air.

But that just scratches the surface of the region’s interesting features. The islands are actually some of highest points on a huge underwater plateau. Given the right nutrients and physical conditions, spectacular blooms of phytoplankton can make an appearance in the waters over the plateau.
Data
Font http://earthobservatory.nasa.gov/IOTD/view.php?id=89328&src=eoa-iotd
Autor NASA Earth Observatory
Permission
(Reütilizacion d'aqueste fichièr)
Public domain Aquest fitxer és en el domini públic perquè ha estat creat per la NASA. L'avís legal de la NASA diu que «el material de la NASA no està protegit per copyright si no es diu el contrari». (NASA copyright policy page o JPL Image Use Policy).
Atenció:
  • L'ús dels logotips de la NASA, insígnies i emblemes està restringit la llei dels EUA 14 CFR 1221.
  • El lloc web de la NASA disposa d'un gran nombre d'imatges de l'Agència Espacial Russa, o soviètica, i d'altres agències no nord-americanes. Aquestes imatges no són necessàriament en el domini públic.
  • El material del Telescopi espacial Hubble pot tenir els drets reservats si no prové explícitament del STScI. [1]
  • Tot el material de la sonda SOHO està reservat i requereix d'autorització per a un ús comercial no educatiu. [2]
  • Les imatges destacades en el lloc web Astronomy Picture of the Day (APOD) poden tenir drets d'autor. [3]

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Data e oraMiniaturaDimensionsUtilizaireComentari
actual30 octobre de 2020 a 04.59Miniatura per la version del 30 octobre de 2020 a 04.59720×480 (167 Ko)TillmanNASA Earth Observatory version is better suited to our article: cropped & annotated
26 febrièr de 2018 a 02.43Miniatura per la version del 26 febrièr de 2018 a 02.431 800×1 400 (1,39 Mo)A1Cafeloriginal size
10 genièr de 2017 a 16.42Miniatura per la version del 10 genièr de 2017 a 16.42720×480 (167 Ko)Tillman{{Information |Description ={{en|1=he Kerguelen Islands are an overseas territory of France. But their far-off location in the southern Indian Ocean places these islands far closer to Antarctica than to mainland Europe. In fact, the islands are so r...

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