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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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( {: E  j. T- E# g' c- |" N0 YIslands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island
+ N# [2 q0 P" tfrom its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.
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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.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。. T9 R/ {6 F- w* ~2 H" b; L! Z

5 Z, _0 G3 _6 R% D3 y; y4 `Atafu Atoll, Tokelau, Pacific Ocean/ U- B: W; D! W8 K0 t1 \
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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
0 \7 R) M* J9 pTVBNOW 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。miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.
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Atafu is made up of coral reefs that surrounded the flanks of a volcano that has since become inactive and submerged. Like many tropical ; _0 r4 I- W7 A* b, s9 ?
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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  g  h0 L* O: k; n5.39.217.76Onekotan Island, Russia
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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
* R' M7 N  x8 w- f/ u7 \a caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the
, v# Z3 @. F& F# Z/ B* `5.39.217.76island at around 4,300 feet.
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) `  ?% _9 l& {9 d: }7 UOnekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity 5.39.217.768 {; H+ l* |) E& f! B
caused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes
1 Q2 |3 Y& _. `* l' Hon Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was % \6 }) K; K3 {4 f  |5 I
captured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.- q3 _, T- s; y  M; S3 e

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$ b  t) E& l9 H- ]: z% @! j公仔箱論壇Galapagos Islands, Pacific Ocean
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The Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity
" Z% Y, Z( h- T4 N5 Q" F; j; u1 B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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, o4 V+ m* j3 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。The largest island, Isla Isabela, is made of the lava flows of six gently sloped shield volcanoes. The northernmost of Isabela’s volcanoes,
8 C+ Z2 w% q% H& H3 X" pat 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 tvb now,tvbnow,bttvb  O: ?; g1 u: L$ [
7 satellite in 2001.
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" F8 P) R* t* @$ c; L" N0 p; L9 tMaldives, Indian Oceantvb now,tvbnow,bttvb$ e! I6 R; b; p

! }2 q+ A2 ~/ w( _2 p公仔箱論壇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,
! W' u" f' k6 E) e! `the average elevation of which is a little more than 3 feet. It is probably the lowest country in the world.
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- t; L+ b. m$ |& V2 N, Y$ J5.39.217.76This image of the North and South Malosmadulu Atolls was taken in 2002 by the ASTER instrument aboard NASA’s Terra satellite.5.39.217.76! q; L8 E- W" \

- Q, ~2 j& }8 U+ d2 p) K* y7 W公仔箱論壇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。, y7 Y; y+ z; H

' p- s$ j3 q% C& \0 j  I  qTVBNOW 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。Henrietta Island, East Siberian Sea公仔箱論壇4 J" t( j& Q% t% D" V
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。8 F$ z9 n5 x& D- _. i+ E
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 tvb now,tvbnow,bttvb! [7 F, o  H, ?, B
younger sedimentary rocks. This image was taken by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 satellite on April 30, 2009.tvb now,tvbnow,bttvb2 s7 [8 T" \/ M

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  e5 K# w6 Y! o' D0 x公仔箱論壇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。8 S5 m( u3 @* K8 q; X1 Y+ p+ b+ u' l$ @
Eleuthera Island, Bahamas
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The spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off - g3 Q  W3 N. g( J; A8 u$ o
of coral reefs and deposited in dunes by ocean currents.
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This 2002 image was captured by astronauts aboard the International Space Station. Located in the middle of the Bahamas, Eleuthra Islandtvb now,tvbnow,bttvb& H5 W4 Z* D9 p( n$ q3 x4 D
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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1 o  p2 y" L) jAugustine Volcano, Alaskatvb now,tvbnow,bttvb) k. `) N5 N! v4 e
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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
" }8 s  Z( w& M* P1 R2 ~40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
" }- w5 A7 f/ x/ xtvb now,tvbnow,bttvbin April 2006, shows a steam or ash plume at the tail end of several months of explosive eruptions.
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公仔箱論壇  ^9 O: z$ h8 b# h; q

. y  a1 {8 [% GLesser 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 tvb now,tvbnow,bttvb! H& G5 z$ N3 W! j6 I* R3 b, u
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
5 [, ^  z4 z% f# `2 X$ L; @0 t$ n" R5.39.217.76of 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" L7 d/ e6 m1 l' 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 ! [9 c# F$ ]' j
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 the 5.39.217.760 K0 {1 F' Y9 h* }6 [  B
crust beneath them cooled.
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Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The rest 公仔箱論壇% l& z' P6 H: w$ t2 m" X
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 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。# ~+ v& Q* R  j6 I  X7 Q8 ^- i
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。% r2 ~0 Y+ b' k  w# `7 A. o

4 s9 J. L& C5 h- S9 z9 TThe Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot,
4 K5 `# Z% ~4 Z: ^" N  E" @- @5.39.217.76it 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
  E6 Y! n- ?" ^- ]5.39.217.76the crust beneath them cooled.
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9 T8 }7 A" @# _+ E9 s4 @! E- ^Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The
8 E; I/ y- U* ]3 l8 Q  Rrest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
0 K6 b1 k: F' v! lby the MODIS instrument aboard NASA’s Terra satellite.- h, R& w" h! z2 |& S

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6 }# @; `8 y: a3 s  p( ytvb now,tvbnow,bttvbAlejandro Selkirk Island, South Pacific Ocean
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) C" @6 x8 m2 yThis 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 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。2 k5 R2 k7 X' _* l  ~
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 u" v# o" X8 b, H" W  Z" a4 z
pattern 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 tvb now,tvbnow,bttvb) x" M1 E$ T$ X) b. p
by the Landsat 7 satellite in 1999.
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6 p) b7 O+ d. N- `; r1 k6 S5.39.217.76tvb now,tvbnow,bttvb/ ], O1 ?5 V1 r7 N
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Millennium Island, Republic of Kiribati, South Pacific Ocean3 _. {  e- J$ j" N* |. b3 O& [0 {

4 `' M! T% X$ ]+ g) p% v; t- vtvb now,tvbnow,bttvbAlso known as Caroline Island, Millennium Island is made of coral reefs that grew around a volcano, which is now underwater, leaving behind a ! a. Z: d" d  [; C( W8 O2 }
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
" u- x" _( a: J/ E2 ?; J) W- J5.39.217.76for guano, though today there are no people and it is among the world’s most pristine tropical islands. This image was taken by astronauts 公仔箱論壇/ ^/ D$ j# `7 g0 w9 D
aboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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