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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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; A# E# L. U7 U! F) Bwww3.tvboxnow.comIslands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island , e5 z5 i8 P  v4 _) X1 }# Z* j
from 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.
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" C8 y! t0 z$ v( \Atafu Atoll, Tokelau, Pacific Oceanwww3.tvboxnow.com* I6 Z; c$ a, L* |: K

4 ]  o1 Z$ p4 U2 z8 |8 q' C/ b6 v公仔箱論壇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
3 [9 G0 S: w' n& A& }4 ^miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.
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/ b$ H( |) R' `% g' e/ iAtafu is made up of coral reefs that surrounded the flanks of a volcano that has since become inactive and submerged. Like many tropical
- ~" x, S$ c# Pwww3.tvboxnow.comatolls, Atafu is very low lying and vulnerable to sea-level rise. This photograph was taken by astronauts aboard the International Space Station in January.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。4 t7 U3 ~' S$ `

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6 S5 Y1 o* {6 {- T' _/ U公仔箱論壇Onekotan Island, Russia
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4 S* k$ ^2 B1 |1 y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 e$ K, E4 p' Za caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the . g7 k- C  t- ^6 ?. J5 `1 R
island at around 4,300 feet.1 x/ g' w) P* h: L) X
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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
& q) ?5 v' U8 @) w+ q. C* Icaused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes
4 y. d( W+ _* H7 g. Gwww3.tvboxnow.comon Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was www3.tvboxnow.com) o. _" \4 `- a3 e; ?$ ^
captured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.
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5 \+ c, }, a8 j9 F+ _: 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。Galapagos 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。" m; r; H; Y$ J0 I4 h

6 ~7 J% s7 l! Y+ B" t9 }The Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity
% i) Z9 k( o( ?; Wtvb now,tvbnow,bttvbthat formed the islands is thought to be the result of a plume of hot mantle material rising from deep in the Earth’s interior.
* U7 T' W6 ?1 Q6 ~. u2 OTVBNOW 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。
- H2 o, M1 s( tTVBNOW 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,
  I* w2 H# A. FTVBNOW 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
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/ q0 g  [2 ~7 H! [; d- p$ u/ SMaldives, Indian Ocean公仔箱論壇- R% |3 l' _) r; @. i' P. T( b4 m

- E1 D( x( h7 ^* Otvb now,tvbnow,bttvbThe Maldives comprise 1,192 small coral islands adding up to just 115 square miles of territory. About 330,00 people live on the islands,
* E' t7 t$ p1 L3 R. ^! Cthe 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2 N. O# u" [1 ^! L9 [0 K

, y6 l3 S  Y0 m( H, J! rtvb now,tvbnow,bttvbThis 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 SeaTVBNOW 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。0 |6 a2 n' [0 A) Q1 V2 b
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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 ; _' t7 R4 D6 F7 J1 ]& Q) ~' p+ 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.www3.tvboxnow.com! [9 E; W( P' s( Q6 b5 |/ g4 r. Q

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( J$ a' x& N' K" B6 dEleuthera Island, Bahamas
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5 M9 O# l# U" n4 u% j: ?www3.tvboxnow.comThe spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off www3.tvboxnow.com- @# |  x: d2 D% ^
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 Island
" L: ?% m/ }' \: B/ bTVBNOW 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。is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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2 y* y9 D* g( y( D4 \; r8 L, i- z) wAugustine 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。2 a" O% [# w( p9 z2 l, r( w
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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
/ n3 p1 |" k+ u0 D3 R9 e40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite www3.tvboxnow.com/ J$ o& u7 ]4 U5 G+ B, z
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
; w, m# ~* @. d/ T. R$ t- W6 X/ rthe 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
' m0 p. }/ _$ p3 Sof two tectonic plates. This image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite in 2000.公仔箱論壇$ |, Y  i. K. R

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& U$ T( Z1 T8 d% gHawaiian 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
! p; K" T1 Q2 ?% Gformed 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 ~4 m2 n+ m4 M; b' i公仔箱論壇crust beneath them cooled.www3.tvboxnow.com) v1 j8 ]! {$ X( R0 C: ~2 N
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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
) n. Z4 V% B  ?( L/ _* L# Iof 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,bttvb4 k- u0 ~2 Z) I( H0 T6 K
MODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific Ocean
0 y) r% W5 V% K% W) Z$ }公仔箱論壇# }/ W7 M  G. }: V
The Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot, 6 U  Q3 x0 D' v# f7 {2 c4 ]
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 2 ^  O& e+ o! l8 a  ?7 V: _
the crust beneath them cooled.www3.tvboxnow.com9 A) c* g0 X$ h& l" n

. y5 d5 U& |; s" @) E+ n8 t4 w. c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
6 ~: i6 Y+ q& y% i2 J: FTVBNOW 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 www3.tvboxnow.com. P' k8 E4 ?" a; a; C, |' ^# ]* b
by the MODIS instrument aboard NASA’s Terra satellite.
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Alejandro 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
$ ?- m2 [4 q3 b! l7 K3 l0 Cto 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
/ y4 k. j1 H2 |; x' 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。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 www3.tvboxnow.com$ j1 ]1 c7 `9 n+ N/ L' w
by the Landsat 7 satellite in 1999.www3.tvboxnow.com; m) |& T4 ~; u  p1 V- C& I$ k

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( }+ n% L; A  M( m# \. |www3.tvboxnow.comMillennium Island, Republic of Kiribati, South Pacific Ocean
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$ A! z4 M8 z. G7 ?2 `Also known as Caroline Island, Millennium Island is made of coral reefs that grew around a volcano, which is now underwater, leaving behind a
0 y! R* z6 d, f/ d6 k  v$ R) }6 C4 LTVBNOW 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。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 9 Z. U- G, S* [* B! O
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
$ [# z; Z1 ~) ~* r7 ~  w# [aboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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