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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 tvb now,tvbnow,bttvb" y- q7 V+ J9 w* Y' D% l, I
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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( V8 k6 O7 m/ ^8 xtvb now,tvbnow,bttvbAtafu 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
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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
) D. d1 X9 r" ^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.tvb now,tvbnow,bttvb! [' ?7 K! w3 J, k
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Onekotan Island, Russiatvboxnow.com" q# G. y3 t* u3 F, r
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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 ( ]2 F" q, o# l4 Y" `9 @6 f9 |+ l: m$ p
a caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the tvb now,tvbnow,bttvb4 B- D% d8 b* t% J
island at around 4,300 feet.
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' Y/ D$ P/ U5 w& H% {Onekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity
. e. `( [- l$ N6 ?4 Htvb now,tvbnow,bttvbcaused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes
/ E' X3 d) q1 z" e& e. Z( i# I+ y公仔箱論壇on Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was tvb now,tvbnow,bttvb; K! u$ a& X+ l' h
captured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.
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# Z$ U& ^7 Q7 }# u- G* 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。
6 ~( \* _# C4 h8 Q9 Z/ [% _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。Galapagos Islands, Pacific Oceantvboxnow.com/ x0 \4 H1 T3 f. j  X
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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
) b5 Y8 b# R2 G  t2 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。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, , F9 Z1 E- |; r4 r) B1 k2 K
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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9 g/ `  Q0 z7 O8 W- I/ ctvboxnow.comMaldives, Indian Ocean
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$ K% b5 c4 d' [tvb 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,
8 q/ i' ]% V8 @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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6 b1 I6 k! \) ?, Atvb 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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" A- P& i& _% r1 ?' Z6 D. OHenrietta 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0 s+ _1 m& w. I' [$ D1 P
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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5 X; t- M% v6 P  Mtvb now,tvbnow,bttvbEleuthera Island, Bahamas* r7 e; s; z# B4 @0 Z
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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
: Y9 U6 r; E' T1 Gof coral reefs and deposited in dunes by ocean currents.! {6 I1 u" ~" w8 x

, l+ s5 l! ~/ x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 IslandTVBNOW 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。$ w- I% N& d- @
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.公仔箱論壇! V6 `9 K) K4 y* _3 i" W

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6 b& s# o6 P. Y4 m( ]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。1 ~0 s, t' w- C' X0 i3 F
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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 tvboxnow.com/ ^; Z# Q% ]/ I$ t
40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
+ g: w- V7 [0 a- _2 ttvboxnow.comin 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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( L$ k; D0 E) \+ u公仔箱論壇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 " p  c5 v3 O7 \
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 tvb now,tvbnow,bttvb  R' N* o( l% `; o. b
of two tectonic plates. This image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite in 2000.4 R% {- }( z( X, t

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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
6 m, o) {, [5 wformed 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 公仔箱論壇; t& y. ^- ?# y7 ~
crust beneath them cooled.
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; F7 H& ^& ~# K' F& C; Jtvb now,tvbnow,bttvbToday, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The rest 4 ?% x/ H- K8 U+ ]) 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
* B* ^5 E  h: @6 ]) U' vTVBNOW 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。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。7 N5 i# R+ `' @

( F7 L9 @2 H9 u5 Y8 M9 e" A8 Rtvboxnow.comThe Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot, % n5 S3 b( A1 j8 {8 K
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
& X% O( z. j$ k# xthe crust beneath them cooled.公仔箱論壇2 O2 y$ r0 s& {7 Q+ K

" U- ?$ Y; ^& [  Wtvboxnow.comToday, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The
9 ]4 p/ G  w  ^" Rrest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
% S+ p1 s/ ^" ~* M$ Ytvb now,tvbnow,bttvbby the MODIS instrument aboard NASA’s Terra satellite.公仔箱論壇8 X6 i2 ^8 `! a8 B6 N; ~' b

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3 @1 ?! N/ J1 S( s+ j" @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。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 4 H9 @+ i+ O! z
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 tvb now,tvbnow,bttvb4 W, l: o5 W$ J- u) W& R& p
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 tvboxnow.com! i- G( y" `  `: n. D
by the Landsat 7 satellite in 1999.
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Millennium Island, Republic of Kiribati, South 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。' i, q/ s0 C8 H  E  w2 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 / m8 d8 p/ c: h" G+ ^. g- R
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 ~: W3 I3 d# ?: {: Y' k, l! Ktvboxnow.comfor guano, though today there are no people and it is among the world’s most pristine tropical islands. This image was taken by astronauts 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 _1 R" C: i& H! U$ V
aboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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