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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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8 E0 F6 }" E% D9 ]7 j5.39.217.76Islands are some of the most beautiful, peaceful, violent, desolate and unique places on Earth. While experiencing a tropical island ( O9 U6 }* D/ V5 q' ]- }
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; I1 f$ V6 z9 W+ [9 u9 M+ s% _) E

7 |" M8 [! C' z5 N: \5.39.217.76We’ve collected images taken by astronauts and satellites from space of some of the most interesting islands on the planet.5.39.217.76) p6 G& u- D5 x( T+ J. R. q9 E

1 |* L. _; z' [- B- V5.39.217.76Atafu Atoll, Tokelau, Pacific Ocean
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- o; a' i* z5 Y1 g& Q0 U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 5.39.217.76% \' M& a; k5 }" P8 X
miles wide and is the smallest of three atolls in the Tokelau Islands, a New Zealand territory.公仔箱論壇; |. z3 R; V$ A& P- {9 L4 a- x
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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
  V/ F1 M& W, Q$ R( o公仔箱論壇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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7 g- M$ [; f2 g. {tvb now,tvbnow,bttvbOnekotan Island, Russia公仔箱論壇6 C8 [% ?: y% ^( ^9 W1 o6 k
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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
8 A7 _' ?6 `) x1 O6 p- |" y3 @' j5 X公仔箱論壇a caldera that subsequently filled with water. The island inside the caldera is known as Krenitzyn Peak, which is the highest point on the 1 l; @$ O5 T/ ~/ Z" x, t$ c
island at around 4,300 feet.tvb now,tvbnow,bttvb/ ]) ]2 T, ~  i& P) C

" a1 l& F3 P1 |, G% k4 U! v  a8 fOnekotan is in Russia’s Kuril Islands between Japan and the tip of the Kamchatka Peninsula. The islands were formed by volcanic activity
8 e1 ^( K3 u+ w/ b0 m: ]" X) k, L公仔箱論壇caused by the subduction of the Pacific Plate beneath the Eurasian Plate. Subduction can also generate some of the largest earthquakes
$ c0 s" F( g. O  q* w/ ?5.39.217.76on 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,bttvb4 [- N2 d/ T  t, J2 M( L( ]
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
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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 5.39.217.76/ \! b: U3 }( U: m& Q
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,
# I; @8 M, U$ C( \$ J% bat 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
7 T% A! S* _& ?7 satellite in 2001.
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& i/ ^" l" k+ h+ ]% qtvb now,tvbnow,bttvbMaldives, Indian Ocean公仔箱論壇6 p/ |( k2 P" y8 K
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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, ! r5 |+ U' |. I
the average elevation of which is a little more than 3 feet. It is probably the lowest country in the world.: T) d$ R" |  Z" H# o0 {
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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.公仔箱論壇3 O" J4 j& ]$ W% ?

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Henrietta Island, East Siberian Seatvb now,tvbnow,bttvb( a9 X. Z; ?- ~4 D- X) L
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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
" `$ i7 K0 e$ d# S8 R3 b& |* Uyounger 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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8 ^( ^! N0 J. q% e! ftvb now,tvbnow,bttvbEleuthera Island, Bahamas3 D; e# Y$ D2 q  i$ m- ~

" B5 H+ h, |/ W' 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。The spectacular underwater formations to the west of Eleuthera Island are made of calcium carbonate sand that has been eroded off
. W3 Z2 x" \8 c5 j# y公仔箱論壇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公仔箱論壇: A; |4 Y  X! i2 z' Q2 Z
is 110 miles long, and in places just over a mile wide. Around 8,000 people live there.公仔箱論壇  P* b# p& o, }

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Augustine Volcano, Alaska公仔箱論壇* q9 [  [6 k, B7 s

0 ?5 @7 d  I8 @2 Q" t9 D3 Otvb now,tvbnow,bttvbThe 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,bttvb& ]6 Y6 L) K7 Y( y1 z
40,000 years. This image, captured by The Advanced Spaceborne Thermal Emission and Reflection Radiometer on NASA ’s Terra satellite
' a& @! y( p- r! t0 T: [4 w3 W8 din April 2006, shows a steam or ash plume at the tail end of several months of explosive eruptions.
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% B* J' v2 o* ~% a+ Y, @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 " d! I. n& j5 h. m5 h; [
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
0 a7 D- m+ u7 L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( {6 R+ n3 ]7 h% X7 ?, Z: ]
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* ]: q$ `; Y3 D! Y! e; mHawaiian 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 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。, W/ E) {$ X7 t6 X! Z
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
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2 [$ J% p4 E$ j# q+ J, ]Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The rest 5.39.217.768 Q+ Q: z3 Z5 d$ {) 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
1 [* w' N. S7 }0 m* i, o% `5.39.217.76MODIS instrument aboard NASA’s Terra satellite.Hawaiian Islands, Pacific Oceantvb now,tvbnow,bttvb1 Y5 L1 x1 a0 I. H; }

* g, s7 G" }5 G0 B& x5.39.217.76The Hawaiian Islands were formed by an upwelling plume of hot mantle material, called a hotspot. As the Pacific plate moved over the hotspot,
% H2 m7 w$ e" Bit 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
, L# _1 _/ b0 r5 E8 Othe crust beneath them cooled." c" j% U. `  d" j4 d% u
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# C( S5 g1 y' Z$ Q* }2 J2 D4 p
Today, the hotspot is causing active volcanism on the Big Island of Hawaii. Kilauea Volcano has been erupting continuously since 1983. The
, v! h, e& T* [: L; sTVBNOW 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 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& h9 q7 p5 [3 i, v% K
by the MODIS 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。) X& i2 H+ G$ i% e* v7 O

) R5 u5 |) X4 v! A; j公仔箱論壇
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; N. P; m1 G7 s3 S0 h6 ]% Vtvb now,tvbnow,bttvbAlejandro Selkirk Island, South Pacific Ocean5.39.217.76) f! t% D5 X9 W% S
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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 d9 A% n# O7 G' b5.39.217.76to 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,bttvb: F% P. ?; K; m" J8 z0 X! M
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
7 `  m5 U! ]8 _% Ctvb now,tvbnow,bttvbby the Landsat 7 satellite in 1999.
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) C/ |; F6 y$ e- p% r6 B% T/ bMillennium Island, Republic of Kiribati, South Pacific Ocean
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% }$ z% y' x( ]- m) n5 ]8 P1 \公仔箱論壇Also known as Caroline Island, Millennium Island is made of coral reefs that grew around a volcano, which is now underwater, leaving behind a 公仔箱論壇9 ]& s$ Q% o/ a3 v4 x0 K
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
' f& m8 K( |0 W+ g. 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。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
$ @+ J$ n8 c$ }2 B' \8 w1 Kaboard the International Space Station on July 1, 2009.


作者: k23bb    時間: 2009-12-23 01:06 AM

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