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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 公仔箱論壇0 c7 N/ z" G; Y5 S; d( {
from its sandy beaches, or a volcanic island from its towering peaks is wonderful, experiencing them from above can be inspiring as well.# q) [, d3 g( `+ c7 F! ?+ ?( Y
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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.tvb now,tvbnow,bttvb( I4 {! A* |" e! K- t; d; E/ g- R3 ^
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Atafu Atoll, Tokelau, Pacific Ocean1 U0 s' T% x' N* v1 r1 p1 O9 F

$ r. ^6 B& t. 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。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 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。% x' m. d. R" |- R' ?
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 5.39.217.761 w8 O) q$ t' d3 H% q9 d' C8 y' I
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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Onekotan Island, Russia0 y/ C0 @. J9 j6 D

1 k5 Q9 ~; C2 KAn 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
9 |1 r0 n1 ?/ P8 I( h1 b7 Ja caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the
' c! {- x! s0 {6 j$ C1 ^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。island at around 4,300 feet.5.39.217.763 F$ l+ q/ l# S  p" |

0 h% O& K2 N4 U+ QOnekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity 公仔箱論壇* {$ W; d# @6 k; b& x8 V
caused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes
: Z4 T# P5 Q0 n& D( {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
, n7 @5 A9 o# I" c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.
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Galapagos Islands, Pacific Ocean
/ _# B; E  M9 v/ UTVBNOW 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。
$ E/ ^5 w' i+ e! D3 `) n5.39.217.76The Galapagos Islands are the tops of volcanoes on the sea floor off the coast of South America along the equator. The volcanic activity 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。3 F# J9 d; y% H
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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3 _( T0 ~. n2 K- m5 E公仔箱論壇The largest island, Isla Isabela, is made of the lava flows of six gently sloped shield volcanoes. The northernmost of Isabela’s volcanoes,
# k  \4 ]( e7 Y5.39.217.76at 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 + M1 E3 P3 a7 J* }) m9 v  P  j
7 satellite in 2001.
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, m# l' Y5 S2 U6 ^9 d4 h5.39.217.76Maldives, Indian Ocean
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! @& u  i9 u! YThe Maldives comprise 1,192 small coral islands adding up to just 115 square miles of territory. About 330,00 people live on the islands, 公仔箱論壇7 u& j9 c' i+ g3 k$ q, x5 T
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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3 J. w5 @; V3 |  ?9 x' 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。This image of the North and South Malosmadulu Atolls was taken in 2002 by the ASTER instrument aboard NASA’s Terra satellite.5.39.217.766 M# I+ g6 U% z$ w; m
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# A: }, u8 [' x& z5.39.217.76Henrietta Island, East Siberian Seatvb now,tvbnow,bttvb1 f" K' T+ e0 l. B8 c" l1 ?: ?

- V& k/ t* q9 {6 U: AThis 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
  k( |' d' F3 K" m; l- C5.39.217.76younger 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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: v* R- w: N8 }" DEleuthera Island, Bahamastvb now,tvbnow,bttvb8 q8 R. |, g: D) c  n* g# B& ^

4 {/ V: I5 ]1 r$ TThe spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off
: T2 w* Z0 g* z: ?6 u" s5.39.217.76of coral reefs and deposited in dunes by ocean currents.5.39.217.767 S6 @8 `  n% P; J) R4 |" a. D

  y2 B) V) y" O6 g3 j( w5 JThis 2002 image was captured by astronauts aboard the International Space Station. Located in the middle of the Bahamas, Eleuthra Island
) j( e* F. K# r- N$ |" Lis 110 miles long, and in places just over a mile wide. Around 8,000 people live there.
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# I' v" S! m& l; i0 M3 y5.39.217.76Augustine Volcano, Alaska2 @% a( e( b, ~/ B9 p
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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 tvb now,tvbnow,bttvb8 Z& h; G5 Y5 a0 {
40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
9 w' F% w, ]- f1 b5 g6 |& \in April 2006, shows a steam or ash plume at the tail end of several months of explosive eruptions.
6 m4 T6 K/ g3 Q3 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。
( U( w+ j& h; q- O  v$ W6 [( Z5.39.217.76公仔箱論壇- N. I0 G) K; m6 v7 F$ }

4 [* G) _! g& H2 ITVBNOW 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。Lesser Sunda Islands, Indonesia8 n. W5 ~7 w; Z( U

- z0 C* [$ U! m5.39.217.76The three largest islands in this image, and many smaller ones, make up Indonesia’s Komodo National Park which was established in 1980 to protect + c  _0 Q( @' v& }
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
% k2 x  e7 s' `6 ~. P公仔箱論壇of two tectonic plates. This image was captured by the Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA’s Terra satellite in 2000.tvb now,tvbnow,bttvb* i. s; B8 y1 w' r7 R# ~) z

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Hawaiian Islands, Pacific Ocean5.39.217.76" E; }, m, I9 L' [$ Q

- d% b6 ^$ ^# Y3 NTVBNOW 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 Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot, it 5.39.217.768 v0 S% ^  d' _
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
; [- ?' @% S& p" _5 W% a0 L5.39.217.76crust beneath them cooled.* {$ \/ M8 t# I' x  m9 A
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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
/ [8 A4 `+ k: s! a; J3 gTVBNOW 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。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 ) d# A" z1 v8 O) N( Q1 _& J
MODIS instrument aboard NASA’s Terra satellite.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, 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 c7 y4 r! Y; j
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 0 X' r, Z6 C, ]7 }
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 1 k. J- J: D- _; c9 g$ X1 S0 ?9 _2 @
rest of the islands, which get older from right to left, are Maui, Kahoolawe, Lanai, Molokai, Oahu, Kauai and Niihau. This image was captured
5 [1 }* ?7 v  P公仔箱論壇by the MODIS instrument aboard NASA’s Terra satellite.公仔箱論壇" w1 _  h, f- d0 Q% J& k+ B3 b
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Alejandro Selkirk Island, South Pacific Oceantvb now,tvbnow,bttvb; W8 E- M7 q  N' a  p1 S

, M0 I" f; S2 M2 u( 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 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) y( K% R5 m2 \
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 公仔箱論壇) a. M0 V- F7 r: b& a
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 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 H' C; c, \  a* P6 ]
by the Landsat 7 satellite in 1999.5.39.217.765 Q( R  P5 W2 v; B/ ]/ ]. T
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- g- i( [$ S4 @# A8 XMillennium Island, Republic of Kiribati, South Pacific Ocean- w3 N7 w4 h& u) s! o  D7 M

4 i/ f3 |5 O2 n! ^" u' N0 o& F0 g6 UAlso known as Caroline Island, Millennium Island is made of coral reefs that grew around a volcano, which is now underwater, leaving behind a ) s% x# r  A# r5 N
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# c* x' `" t  q
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
3 Y# T8 D: Q% o0 A公仔箱論壇aboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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