Start Date: End Date: Published Date Data Date
Port of Rotterdam, Netherlands
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Published June 20, 2005
The Port of Rotterdam, also known as Europoort (Eurogate), has been an important trading center since approximately AD 1250. The history of the port reflects the evolution of the world’s economic base. Originally serving the North Sea herring fleets, it rapidly grew into a major mercantile port during the Dutch colonial period. The 19th century witnessed the Industrial Revolution, and steel and coal became major commodities passing through the port. Following the development of petroleum as a primary energy resource in the early 20th century, the port expanded westward to accommodate storage facilities and large oil tankers.
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Fire Scars in Australia’s Simpson Desert
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Published June 13, 2005
Bright orange fire scars show up the underlying dune sand in the Simpson Desert, 300 kilometers east of Alice Springs, in this astronaut photograph taken from the International Space Station in November, 2003. The fire scars were produced in a recent fire, probably during the same year. The image suggests a time sequence of events. Fires first advanced into the view from the lower left—parallel with the major dune trend and dominant wind direction. Then the wind shifted direction by about 90 degrees so that fires advanced across the dunes in a series of frond-like tendrils.
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Ural River Delta, Kazakhstan
Published June 6, 2005
The Ural River is one of the two major rivers (the other is the Volga) that empty into the northern coast of the Caspian Sea, creating extensive wetlands. This image shows details of the Ural’s tree-like (or “digitate”) delta. This type of delta forms naturally when wave action is low, and sediment content in the river is high. New distributary channels form in the delta when the river breaches natural levees created by sediment deposition. The long main channel of the river in this image and several of the distibutary channels are too regular to be entirely natural, however. Like the famous Mississippi River delta in the United States, the Ural River delta has been significantly modified to reduce flooding and divert water.
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Tarbela Dam, Pakistan
Published May 30, 2005
The Indus River basin extends from the Himalaya Mountains that form the northeastern boundary of Pakistan to the alluvial plains of Sindh near the Arabian Sea coastline. Tarbela Dam is part of the Indus Basin Project, which resulted from a water treaty signed in 1960 between India and Pakistan. This treaty guaranteed Pakistan water supplies independent of upstream control by India. Designed primarily for water storage rather than power generation, the dam was completed in 1977. Turquoise waters of the Indus River (to the south of the dam) reflect the high proportion of silt and clay suspended in waters released by the spillways.
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Khartoum, Sudan
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Published May 23, 2005
Sudan’s capital city, Khartoum, translates as “Elephant’s Trunk.” The name describes the shape of the Nile where the Blue and the White Nile Rivers unite to form the single Nile River that flows northward into Egypt. This image shows the rivers near the end of the dry season. The White Nile (western branch) runs through Sudan from Uganda. It originates in equatorial regions, where rainfall occurs throughout the year, and as a result it runs at a nearly constant rate throughout the year. The Blue Nile, nearly dry this time of year, flows out of the Ethiopian highlands, where rainfall is more seasonal. It swells in the late summer and early fall with rains from the summer monsoons. The flow at these times can be so great that the volume is too much for the river’s channel, causing the Nile to flow backward at the junction.
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Baitoushan Volcano, China and North Korea
Published May 16, 2005
One of the largest known eruptions of the modern geologic period (the Holocene) occurred at Baitoushan Volcano about 1000 A.D. The eruption created the 4.5-kilometer diameter, 850-meter deep summit caldera of the volcano, which is now filled with the waters of Lake Tianchi.
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Jericho, West Bank
Published May 2, 2005
Commonly known as “the oldest city in the world,” Jericho is an important historical, cultural, and political center located northwest of the Dead Sea. This astronaut photograph illustrates the city center, and the original settlement mound of Tell es-Sultan. Total distance across the image is approximately 8 kilometers (5 miles). Two large refugee camps are located to the northwest and south of the city center. The high building density of the refugee camps contrasts sharply with the more open city center and irrigated fields (green polygonal patches) of Jericho, and illustrates one of the physical consequences of the ongoing Israeli-Palestinian conflict in the region.
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Lima Metropolitan Area, Peru
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Published April 18, 2005
Located on the broad alluvial fan of the Rimac River, Lima is the capital of Peru and the only megacity (7.7 million inhabitants in 2002) located on the western coastline of South America.
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Rollout of Shuttle Discovery, Kennedy Space Center
Published April 11, 2005
International Space Station Astronaut Leroy Chiao, like the rest of NASA, tracks key milestones for the Space Shuttle Return-to-Flight operations. A lucky overpass of the Space Station over Florida on April 6, 2005, allowed Leroy and his crew mate Salizhan Sharipov a unique view of the rollout of the Space Shuttle Discovery. At the time of his observations, Discovery was approximately midway between the Vehicle Assembly Building (VAB) and launch pad 39-B at Kennedy Space Center in Florida.
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Mount Olympus, Greece
Published April 4, 2005
Mount Olympus is the highest peak in Greece. The 2,917-meter (9,570-foot) summit is the tallest in a mountain chain that runs north into Bulgaria and south into Turkey, via the Cyclades Islands. In this winter view, Olympus is the only peak with a dusting of snow—perhaps the reason its name in classical Greek means “the luminous one.” In Greek mythology, the peak was inhabited by the Twelve Olympians, the most famous gods of the ancient Greeks. North of Mount Olympus lies Macedonia, the homeland of Alexander the Great. Climbing the famous mountain is a favorite tourist activity today.
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Popocatepetl and Iztaccíhuatl Volcanoes, Mexico
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Published March 28, 2005
As part of the circum-Pacific “Ring of Fire,” Mexico hosts several of the world’s most continually active volcanoes, including the massive Popocatepetl (Aztec for “smoking mountain.”) This detailed, oblique astronaut photograph also depicts a neighboring volcano, Iztaccíhuatl (the “Woman in White.”)
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Arid Coast of Peru
Published March 21, 2005
Following the last major upheaval of the Andes Mountains, rivers flowing down into the Pacific Ocean have carved dramatic canyons along Peru’s southern coast. In geologic terms, the canyons are relatively young—carved over the past 8 million years. This oblique (off-vertical) image from March 14, 2003, provides a southward look down Peru’s rugged, arid coastline between 15.5 and 17 degrees South latitude. The canyons run from left to right and appear grayer than the surrounding reddish-brown terrain.
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