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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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, |9 [' {2 Q: x5.39.217.76Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island
& L! I. S0 T" T  j5 Y# i$ ~from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.9 [: x! d! G8 x& Z
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We’ve collected images taken by astronauts and satellites from space of some of the most interesting islands on the planet.
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Atafu Atoll, Tokelau, Pacific Ocean公仔箱論壇$ ]0 I$ [0 s! `* a" ?( A; e
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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 9 o0 ]! \! w: h( n6 X1 Q: N2 w
miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.) M  a/ O0 \3 I' I& U  _/ G8 e! N  ?

/ F( K/ y2 {, t5 \% E  `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
" u" V8 U9 ]6 Y$ s; [- z& K2 U) 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。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.: `3 _2 v% L  ]6 O! g: W9 o* x
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6 X; N: S; p  n& S8 J. d" mtvb now,tvbnow,bttvbOnekotan Island, Russia
: `1 w+ g% {7 [. o公仔箱論壇
- `+ s% `0 [0 L4 s7 s$ HTVBNOW 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。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
' p+ d% }. ]" O5 Y6 ha caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on 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。5 k/ t9 ]2 l% B+ _) W
island at around 4,300 feet.
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Onekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity 6 w- `# p. W$ ^5 Z
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$ C3 H# g5 s, N  a" @, h
on Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was
! k) T  m: g1 Z* D. bcaptured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.
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Galapagos Islands, Pacific Ocean( i$ c7 k& A6 T' V0 S5 a

0 G# u" W4 n6 A3 d) v/ W' e7 p5.39.217.76The Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity
2 k6 Y8 W% k; w) s公仔箱論壇that formed the islands is thought to be the result of a plume of hot mantle material rising from deep in the Earth’s interior.
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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,
7 H+ i9 p1 a% p% A6 c: H7 }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。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
$ B' z8 @" k, T8 k1 b7 satellite in 2001.
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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,
6 C+ W& v! n+ e: g9 Y5.39.217.76the 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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Henrietta 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 公仔箱論壇8 U, \5 l: X* C9 w- L: G9 F  J
younger sedimentary rocks. This image was taken by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 satellite on April 30, 2009.
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) z( N; b+ X: o/ X: zEleuthera Island, Bahamas5.39.217.76. x" }2 |2 M6 j- U# `. }

- c& @$ ~) x' 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 spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off
$ @& l3 G2 T, Z7 n6 V7 v! Z7 h; mtvb now,tvbnow,bttvbof coral reefs and deposited in dunes by ocean currents.5.39.217.76% Y+ A- {. H7 g9 F- c
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This 2002 image was captured by astronauts aboard the International Space Station. Located in the middle of the Bahamas, Eleuthra Island5.39.217.766 [0 k  b. n* y- {% k  k6 P$ W. W
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.5.39.217.76! k$ o5 d/ J; f. r" t3 G

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" a: T3 L5 x9 B. {* K( c, q$ ^Augustine Volcano, AlaskaTVBNOW 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。( B3 N1 Y  a( x) M$ o0 ~

. U: Y3 _0 U$ o2 r: X5 T+ E5.39.217.76The most active volcano in Alaska’s Aleutian arc, Augustine Volcano’s biggest historical eruption occurred in 1883. It has been erupting for
; B! m3 h. e% p1 `5 |, ~2 q! J1 R40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite tvb now,tvbnow,bttvb  l, ]# F0 ?$ ]6 j, U
in 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 + j, p8 p0 L5 {  [
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 公仔箱論壇. l& J. y) q( H* C
of two tectonic plates. This image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite in 2000.
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Hawaiian Islands, Pacific Ocean
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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
" m" f( ?" f9 C+ l# P+ |- r5.39.217.76formed 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 tvb now,tvbnow,bttvb) }4 T$ H9 y6 F; j9 W' h5 a9 G
crust beneath them cooled.
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% D1 S4 g0 t0 m+ G- ~# x5.39.217.76Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The rest
( {1 L% X# p; q. V  x8 L$ G5.39.217.76of 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,bttvb" W0 O; s& a' _) Q
MODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific Oceantvb now,tvbnow,bttvb! E2 ~) V2 X7 n7 z. \! A9 v
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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,
9 V1 d+ A3 `6 o5 Dit 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
/ `$ J- f' A7 O4 ^8 P, Jtvb now,tvbnow,bttvbthe crust beneath them cooled.
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: X' Z9 l8 [1 x  gtvb now,tvbnow,bttvbToday, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The
* C6 ~: f) m2 \. 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。rest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
7 K2 v; ~6 O3 Z  ~7 I5.39.217.76by the MODIS instrument aboard NASA’s Terra satellite.
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+ M3 i4 f: V9 y; h$ }& {tvb now,tvbnow,bttvb5.39.217.761 D) V. D$ G" u8 r: O
Alejandro Selkirk Island, South Pacific Ocean0 r2 E# j; A& ~. l) L) i
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This 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
, {' l9 ^* m3 V* B! R7 q! e7 ]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。to 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
0 w8 G1 D5 l3 D. Zpattern 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
$ Q! Q/ `! Q5 R3 b5.39.217.76by the Landsat 7 satellite in 1999.
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% V% r- e( v" s: yTVBNOW 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。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。6 E) X" P* L$ ~# r
Millennium Island, Republic of Kiribati, South Pacific Ocean/ A& K5 o! T" X. j3 Q& g
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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 ( P. \* }+ ~+ h9 t
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 - R/ o, z" A7 j2 K- T8 ~3 s8 V, m
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
1 G' l+ a+ m& r7 paboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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