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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


; Y# P. v- O5 @8 g5 h. q0 V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。% k/ F$ ?) V2 }- e
Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island 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 z0 m. \/ _) d0 ]$ _& n
from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.公仔箱論壇; h5 F$ o# Q% e8 |7 |( A
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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, }+ N5 I6 E' k- i  f0 l

; a, n2 \- ]; c; mAtafu Atoll, Tokelau, Pacific Ocean
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) |0 O1 w; m7 S6 Q5.39.217.77Around 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
$ ~, Q4 `' b- V; y! R( r$ ymiles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.
" S3 @: n& M! T/ F* l3 I2 q0 o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。& C% B2 y, n% e1 M1 |$ I1 Z; _
Atafu is made up of coral reefs that surrounded the flanks of a volcano that has since become inactive and submerged. Like many tropical 5.39.217.77/ C( J# A. w2 m8 l$ D! P
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.
! F& h6 b. A' i( A# 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。5.39.217.77/ P/ t) M: }5 a+ b
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Onekotan 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
/ W/ N- V7 }7 e- G& Fa 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,bttvb/ J* _4 Y/ v3 ?- i$ @/ O
island at around 4,300 feet.* o2 P- q8 i. q/ O5 X* z
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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
) ]2 b% I, W2 x# b4 B+ N$ }caused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes 5.39.217.77! s" n0 k- D' d$ e$ |* b
on Earth, including a magnitude 9 here in 1952 which was followed a week later by Krenitzyn’s only historical eruption. This image was
# `3 p4 {; r5 g5 L2 g5 E4 r! h公仔箱論壇captured by the Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite on June 10, 2009.tvb now,tvbnow,bttvb' S9 b3 r- U: b$ A3 D

7 _. q4 u; u3 P5 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。
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Galapagos Islands, Pacific Ocean
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. W; l+ d6 d0 ~" }9 n公仔箱論壇The Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity
, u9 I! N1 D/ A+ @2 Y1 p1 r4 v9 |- Ltvb 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.公仔箱論壇; Y0 r. s/ t) g, T

2 M' d% E/ ^1 M) r1 w2 gtvb now,tvbnow,bttvbThe largest island, Isla Isabela, is made of the lava flows of six gently sloped shield volcanoes. The northernmost of Isabela’s volcanoes, tvb now,tvbnow,bttvb4 L' h4 a9 U$ n4 w1 G
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
/ a2 R' n4 @, q7 C公仔箱論壇7 satellite in 2001.6 R' w! ^" M* n0 ?& y- X# |7 i

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) i% }/ n' }" m5 D公仔箱論壇Maldives, Indian Oceantvb now,tvbnow,bttvb0 T  E% D. s( E: d* G9 d1 @" Q* T
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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, 5.39.217.77+ I5 G- @! Y. f; v, ^: O0 O2 D3 z
the average elevation of which is a little more than 3 feet. It is probably the lowest country in the world.tvb now,tvbnow,bttvb) u4 _1 q6 [, s* Q; Q' s

; c* u9 N( b; x4 s1 n" }2 V' 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。This image of the North and South Malosmadulu Atolls was taken in 2002 by the ASTER instrument aboard NASA’s Terra satellite.公仔箱論壇1 A. }( T' H+ I# X6 p& l2 Q
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  R; _2 \+ s; J8 qHenrietta Island, East Siberian Sea5.39.217.77  d* O5 s6 M8 @8 n0 c
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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2 R. e/ a1 r# C# S/ s8 m/ ?2 l
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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Eleuthera Island, Bahamas5.39.217.77( `% |$ X- T+ W7 j: t1 O
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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
7 U$ X+ D( P  L3 Stvb now,tvbnow,bttvbof coral reefs and deposited in dunes by ocean currents.
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& q5 C  h7 \' p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 Islandtvb now,tvbnow,bttvb$ ]9 D9 e6 N$ n$ G8 t% F- Q% T
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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Augustine Volcano, Alaska
* K% E5 G+ O3 B( }) kTVBNOW 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。
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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
. P, f' A& I7 XTVBNOW 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。40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite 公仔箱論壇" y* Q4 I+ I8 c6 w
in April 2006, shows a steam or ash plume at the tail end of several months of explosive eruptions.公仔箱論壇! x' G8 x9 j  V( o) P

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Lesser Sunda Islands, Indonesia5.39.217.77. V& x$ G1 r7 J1 K1 ^0 ]: Q+ L

2 C4 ^: O" b/ D5 T1 EThe three largest islands in this image, and many smaller ones, make up Indonesia’s Komodo National Park which was established in 1980 to protect
, d) z* K( R! ]公仔箱論壇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 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 Q' N9 h& d, 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.
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Hawaiian Islands, Pacific Ocean5.39.217.77- J! I4 Y. p, ^" U

2 K! ^/ r5 P$ h. M% k2 }公仔箱論壇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 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。+ s9 W! O, H# w, \
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
$ O& c4 \- ^4 e7 h/ `: E* y  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。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 5.39.217.779 P# T' _1 w/ I$ _
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 tvb now,tvbnow,bttvb! M; J, m8 a; a5 u
MODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific Ocean公仔箱論壇* ~* P6 {) [# F, a: \/ g6 j
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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, " c$ o# f' w2 y1 u
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 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。! h& A. N  L1 X% }' m" }9 y
the crust beneath them cooled.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。, Q8 C) G6 t2 p/ K: {* H

, V" a* ~" ^* {! e: E; ?5.39.217.77Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The
/ W$ u; w( j1 |. X( W公仔箱論壇rest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured tvb now,tvbnow,bttvb2 t! |% _( @! Y$ H5 G4 |
by the MODIS instrument aboard NASA’s Terra satellite.
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Alejandro Selkirk Island, South Pacific Ocean5.39.217.774 i/ M: Y, E+ O( Y! s- F" }* T
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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 公仔箱論壇& o" _8 \  B) t+ K- t7 n+ t
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。1 s3 F) G, D, J5 L8 Z. N8 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 4 {/ l  @3 ^' I& k
by the Landsat 7 satellite in 1999.
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4 h- u: }7 k& l. U! C2 N$ y- Btvb now,tvbnow,bttvbMillennium Island, Republic of Kiribati, South Pacific Oceantvb now,tvbnow,bttvb# T- Y# G8 ]% K+ d' u. y

' H, P; E# O4 P1 Ytvb 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 tvb now,tvbnow,bttvb% e* Q% [8 \) l
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
* n9 Z' W: m1 B- G$ F) Ufor guano, though today there are no people and it is among the world’s most pristine tropical islands. This image was taken by astronauts
' m3 R# U, B$ B& ]' j9 baboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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