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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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Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island
' D0 C! T/ P  s# N' K$ a' J) \公仔箱論壇from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.* j) w7 J* q; w& k
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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.公仔箱論壇' H4 q$ R% D3 a

9 e4 _: X% O6 J" D- ^tvb now,tvbnow,bttvbAtafu Atoll, Tokelau, Pacific Ocean
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  u& J  M) G+ O$ P% c5 ztvb now,tvbnow,bttvbAround 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 os.tvboxnow.com- e  m' W/ B, {. c8 A7 e7 b
miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.  {$ `, Y$ V3 `. m+ ^5 O
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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 os.tvboxnow.com; p" z5 E: v8 a$ K
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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! J6 f; J4 [% e3 x, q& R3 Qos.tvboxnow.comOnekotan Island, RussiaTVBNOW 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。' y' x& p" k$ l& k

7 u; U3 @# F2 R% L公仔箱論壇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 8 }  u$ E4 _' J7 J
a 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。- u! x- t. z$ I0 ^" }3 q& I8 q
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
* k$ i5 i9 [# X- e2 O' d- xtvb now,tvbnow,bttvbcaused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes tvb now,tvbnow,bttvb7 {. w7 d2 U" P0 u% w6 F
on Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was 1 P, O* ?  T) V6 M+ [; ?8 ?' P
captured 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" a7 P9 O7 d( R. b
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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
9 M8 l. ?' Y) u/ 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。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, 公仔箱論壇& E$ U( ?/ f$ l7 R* [' r3 d
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
( Y  x+ ]6 e  e6 l  U公仔箱論壇7 satellite in 2001.
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Maldives, Indian Oceantvb now,tvbnow,bttvb1 J; c; C' G5 A3 q- N1 h: o8 F1 _

7 b2 k$ k- o) F9 k1 rThe Maldives comprise 1,192 small coral islands adding up to just 115 square miles of territory. About 330,00 people live on the islands,
( d( S! u+ Z4 A0 h4 N7 g公仔箱論壇the average elevation of which is a little more than 3 feet. It is probably the lowest country in the world.公仔箱論壇5 V# @. D* `# R2 U% ?" i
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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.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 ~% x( Y9 \' G# x% d
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" D/ L3 a6 F* F$ N. rHenrietta Island, East Siberian Sea7 N/ ]! Z) a- q1 A' H% ]: b7 u

0 ?9 w# C1 j  [6 t3 |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 0 r0 R" S2 q# U; e
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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$ X0 Q, S1 r% d/ |' X' s- OEleuthera Island, Bahamas
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* q- G- z# Z. |: x1 `The spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off tvb now,tvbnow,bttvb: p3 G9 r$ b3 ^1 Q2 N0 d# v* c
of coral reefs and deposited in dunes by ocean currents.
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; s$ x+ ]( @: Z0 ?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 Island
. P. y* |1 l9 r1 P& Ris 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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4 ?/ I' ~( m" Z9 o; {( G- [tvb now,tvbnow,bttvbAugustine 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。6 l* y& ]- Z) x6 o

' c9 v8 l0 N) B& ?& X2 H2 P3 yThe most active volcano in Alaska’s Aleutian arc, Augustine Volcano’s biggest historical eruption occurred in 1883. It has been erupting for
9 A; X/ e# J$ L! G3 ^) X8 @& F40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
/ Y! T, u4 l& ^( m8 Ytvb 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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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 os.tvboxnow.com) ?, W; M2 p* S6 m
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
. p' o' N$ r4 U2 T: Jos.tvboxnow.comof 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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5 @5 L# A7 y/ \. v( j# W- T% n) Ios.tvboxnow.comHawaiian 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
9 N+ \3 U& S4 v7 @tvb now,tvbnow,bttvbformed 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
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! W% L# N/ q. E- l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
7 o4 y: L# Q) `( u& a3 [6 U! `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
: X. J8 f/ K; hMODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific Ocean公仔箱論壇+ U1 h3 w% t2 B  C" L0 |1 X! m5 `
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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,
- B* a- V7 h' {% K" sit 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 os.tvboxnow.com' ?5 E3 N- @5 Z. \  m, P
the 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
2 u) [0 ^% w4 ^; ?" d, w1 w  H7 r6 yos.tvboxnow.comrest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
. ^+ x* T' v" M! G) G+ n8 W  f- k1 Sby the MODIS instrument aboard NASA’s Terra satellite.
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& W6 p) r5 R5 Y. F( itvb now,tvbnow,bttvbAlejandro Selkirk Island, South Pacific Ocean
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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
# X% C8 D! o' O! T公仔箱論壇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 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。% k3 a& Q  l2 l$ @# R5 Z* K7 U! u
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 9 Y& c7 |4 w$ G
by the Landsat 7 satellite in 1999.* `. U+ B% Q* ?, \: `" A* L! e7 A" M

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( h1 s3 I1 C, v( g! j& J. M/ h公仔箱論壇Millennium Island, Republic of Kiribati, South Pacific Oceanos.tvboxnow.com2 T5 z$ K) l0 F0 u3 u
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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
: D- n5 U' ?6 W/ v公仔箱論壇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 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。" j3 Z2 u# R- h8 \1 T
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 4 J5 C4 H: W- P: l8 g$ k( s" ~
aboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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