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標題: Out of the Blue: Islands Seen From Space [打印本頁]

作者: bchew    時間: 2009-12-22 09:10 AM     標題: Out of the Blue: Islands Seen From Space

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' j+ C7 J& c" u公仔箱論壇Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island / E' c. u- a, M8 ^5 J# J
from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.4 O$ ]/ L; j. W3 C- A

5 i  D6 k6 H: Q2 etvb now,tvbnow,bttvbWe’ve collected images taken by astronauts and satellites from space of some of the most interesting islands on the planet.! ]8 u' q! S7 ~7 ?. L' ]& d4 O
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Atafu Atoll, Tokelau, Pacific Ocean
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Around 500 people live on Atafu Atoll, mostly in a village that can be seen on the corner in the left of the image above. Atafu is just five + q( E9 e: A, F6 z5 G
miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.
8 Y2 M+ B$ |' Z& d# P" iTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。
; h, E, m) B' P$ _5 ^TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Atafu is made up of coral reefs that surrounded the flanks of a volcano that has since become inactive and submerged. Like many tropical www3.tvboxnow.com, w$ {  C5 I/ U$ x% U: r* V
atolls, Atafu is very low lying and vulnerable to sea-level rise. This photograph was taken by astronauts aboard the International Space Station in January.
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Onekotan Island, Russiatvb now,tvbnow,bttvb' e: ^# ^" I' T
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An island within an island was created after a big eruption around 9,000 years ago caused the peak of Onekotan’s volcano to collapse, forming
" Q! l$ w9 Q# {4 f5 ga caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the : z/ [8 w5 X7 w% o# z
island at around 4,300 feet.
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3 M+ ~2 x$ Y4 H( R6 ~" ATVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Onekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity
# C& G- `3 B+ x( }- r! A! CTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。caused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes tvb now,tvbnow,bttvb& {3 x+ l! n4 U  w2 {4 `
on Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was 9 E$ d9 z: f8 _9 R1 {6 M6 |2 P
captured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.tvb now,tvbnow,bttvb6 y6 n- m) u- X0 L5 m* N# T

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; V/ z9 I: h4 h! P% P9 ztvb now,tvbnow,bttvbGalapagos Islands, Pacific Ocean
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( D6 r. [: H% e, ^1 pThe Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity
8 x( R$ ?* |0 C! c5 p  D$ Qthat formed the islands is thought to be the result of a plume of hot mantle material rising from deep in the Earth’s interior.) G* L, W: f# c5 J9 r
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The largest island, Isla Isabela, is made of the lava flows of six gently sloped shield volcanoes. The northernmost of Isabela’s volcanoes, . g4 Z% A2 p% q, l& q# K( D% Q
at the top of the image above, is Wolf Volcano, which has erupted at least nine times since 1797. This image was taken by the Landsat
: _$ J% G! J0 N- I7 satellite in 2001.
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4 M+ W& ~8 Y$ V, m( G1 NTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。Maldives, Indian Ocean
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The Maldives comprise 1,192 small coral islands adding up to just 115 square miles of territory. About 330,00 people live on the islands,
/ c: f" j# _- t9 m7 V0 ithe average elevation of which is a little more than 3 feet. It is probably the lowest country in the world.
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This image of the North and South Malosmadulu Atolls was taken in 2002 by the ASTER instrument aboard NASA’s Terra satellite.
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! H- W' Q' }/ o- \: I+ F) @0 hHenrietta Island, East Siberian Sea
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This glacier-covered Russian island is just 6 miles wide. Beneath the ice, the island is made up of 500-million-year-old volcanic rocks overlain by
8 o; s' ~3 S& a) k' p/ X% E) Pyounger sedimentary rocks. This image was taken by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 satellite on April 30, 2009.公仔箱論壇0 v) Y9 D9 a4 F5 X0 L: b
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Eleuthera Island, Bahamas
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. z/ o$ e, Y. v! F( p" H公仔箱論壇The spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off
# {* A; h& r* S' o; [$ j# @of coral reefs and deposited in dunes by ocean currents.tvb now,tvbnow,bttvb- c" R: Y; W+ ^) Z. m! Q

" L& n5 O/ ], x+ c5 z. P1 k公仔箱論壇This 2002 image was captured by astronauts aboard the International Space Station. Located in the middle of the Bahamas, Eleuthra Island8 d) |( g* Z4 Q* C
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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! N2 J% r; i9 H$ R% U7 KAugustine Volcano, Alaska
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The most active volcano in Alaska’s Aleutian arc, Augustine Volcano’s biggest historical eruption occurred in 1883. It has been erupting for 公仔箱論壇/ ?2 h* K9 m- f- i8 `( l
40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
9 G3 C9 H- i' [+ E; Y4 @5 r/ _3 [& G' gin April 2006, shows a steam or ash plume at the tail end of several months of explosive eruptions.
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Lesser Sunda Islands, Indonesia
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The three largest islands in this image, and many smaller ones, make up Indonesia’s Komodo National Park which was established in 1980 to protect 公仔箱論壇% A  }' D8 O2 y  l: `9 @
the world’s largest lizard species, Komodo dragon. The total area of the park is 230 square miles. The islands are volcanoes caused by the collision
3 f& y4 [& I- O+ ETVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。of two tectonic plates. This image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite in 2000.TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。. q+ n+ f/ |5 i& ~/ U. ^' q3 u1 i

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Hawaiian Islands, Pacific Ocean, j/ a! H/ |6 z% t
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The Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot, it
; z& c( V, n9 x) d* v3 s' cformed a chain of islands that first grew larger as they actively erupted, and then slowly eroded and sank below the surface of the ocean as the TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。1 Z. y- v7 z& {* O% v
crust beneath them cooled.
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7 |6 ?% d  J4 \: v公仔箱論壇Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The rest $ j* k# V' d8 j/ f  ?
of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured by the tvb now,tvbnow,bttvb8 a6 N' x; w( L, J) H
MODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific OceanTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。. Y0 J: u' r* u* B
公仔箱論壇9 p* B4 F+ q$ `+ r% V- _& G
The Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot,
& a6 `; d. z" S4 `公仔箱論壇it formed a chain of islands that first grew larger as they actively erupted, and then slowly eroded and sank below the surface of the ocean as
; q. \. C$ \, {, WTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。the crust beneath them cooled.
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( @, W! a" Q* D% R4 }tvb now,tvbnow,bttvbToday, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The tvb now,tvbnow,bttvb7 E! O7 }# j0 i  }) X% K
rest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
9 I+ h. [6 s( H  C! Z6 L" ^by the MODIS instrument aboard NASA’s Terra satellite.tvb now,tvbnow,bttvb! |$ z6 p1 \. @7 z# W+ }. T2 W
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/ H/ _' \$ o  X9 f- rwww3.tvboxnow.comAlejandro Selkirk Island, South Pacific Oceanwww3.tvboxnow.com- h/ Z. ~7 l: p2 y4 A

  C+ H$ ^0 K# T0 l1 v/ Ytvb now,tvbnow,bttvbThis small member of the Juan Fernandez Islands off the coast of Chile measures just under a mile across. But its 5,000 feet of elevation is high enough
8 |" E, G. ?# N& N3 m0 q0 mto reach the layer of stratocumulus clouds pictured above. The result is a type of flow known as a von Karmen vortex street. This striking, curly
/ \$ x* _, v9 R7 b" Xwww3.tvboxnow.compattern of eddies can also be seen in clouds, and fluids or air moving past rounded objects such as an airplane wing. This image was taken
- d, n/ S' T# o( STVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。by the Landsat 7 satellite in 1999.
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Millennium Island, Republic of Kiribati, South Pacific Ocean
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Also known as Caroline Island, Millennium Island is made of coral reefs that grew around a volcano, which is now underwater, leaving behind a www3.tvboxnow.com4 `( i* G) z# M: n' I
central lagoon. The maximum elevation of the island is less than 20 feet above sea level. In the past, the island has been inhabited and mined 5 ~7 ^, [& C0 a% t  V" j+ [; X7 g5 g( V
for guano, though today there are no people and it is among the world’s most pristine tropical islands. This image was taken by astronauts
# v& X. T$ G, P$ f5 W$ M) baboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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