Earth Sciences and Image Analysis Photographic Highlights

ISS005 Earth Sciences and Image Analysis Photographic Highlights

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ISS005-E-9451 Jericho, West Bank: Commonly known as “the oldest city in the world,” Jericho is an important historical, cultural, and political center located northwest of the Dead Sea. The city is perhaps best known from the Biblical story of a great victory over its Canaanite citizens by the Israelite leader Joshua. In the story, the walls of the heavily fortified city were destroyed with divine assistance during the year 1400 b.c. The site of ancient Jericho, known today as Tell es-Sultan, has been the focus of several archaeological excavations to investigate the Biblical story. The original settlement was built on a hill, or “tell”. The results of these excavations suggest that the walls of Tell es-Sultan have been built and rebuilt many times, due mainly to collapse caused by earthquakes, which are common in the region. One of these events may be the basis for the story of Joshua.
Modern-day Jericho is a popular tourist destination due to its pleasant climate, historical sites, and religious significance. Located in the disputed West Bank region of Israel, it has been ceded to Palestinian control as part of recent treaty agreements. 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.

ISS005-E-12804 Tarbela Dam, Pakistan: 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 (chutes on either of side of the main dam). With a volume of 142,000,000 cubic meters, the Tarbela Dam is the largest earth and rock fill dam in the world and stands 147 meters above the Indus riverbed. Its reservoir occupies an area of 37 square kilometers. While the dam has fulfilled its purpose in storing water for agricultural use in Pakistan, there have been environmental consequences to the Indus river delta. Reduction of seasonal flooding and reduced water flows to the delta have decreased mangrove stands and the abundance of some fish species.

ISS005-E-21295 Fire Scars in Australia's Simpson Desert: Bright orange fire scars show up the underlying dune sand in the Simpson Desert, 300 kilometers east of Alice Springs. The background is an intricate pattern of sand cordons that angle across the view from lower left to upper right. These cordons are now mostly green, showing that, although they were once shifting, they have become more or less static—“tied down” by a vegetation mat of desert scrub.
The fire scars were produced in a recent fire, probably within the last 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. Each frond starts at some point on the earlier fire scar, and sharp tips of the fronds show where the fires burned out naturally at the end of the episode. The sharp edges of the fire scars are due to steady but probably weak southwesterly winds—weaker winds reduced sparking of additional fires in adjacent scrub on either side of the main fire pathways. Over time, the scars will become less distinct as vegetation grows back.

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This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate.

Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .

NASA Responsible Official: Susan Runco

Curator: jsc-earthweb@mail.nasa.gov

Contributors: Earth Sciences Web Team

National Aeronautics and Space Administration

Lyndon B. Johnson Space Center

International Space Station National Laboratory

Last Update:

Server: 1

ISS005-E-9451	Jericho, West Bank: Commonly known as “the oldest city in the world,” Jericho is an important historical, cultural, and political center located northwest of the Dead Sea. The city is perhaps best known from the Biblical story of a great victory over its Canaanite citizens by the Israelite leader Joshua. In the story, the walls of the heavily fortified city were destroyed with divine assistance during the year 1400 b.c. The site of ancient Jericho, known today as Tell es-Sultan, has been the focus of several archaeological excavations to investigate the Biblical story. The original settlement was built on a hill, or “tell”. The results of these excavations suggest that the walls of Tell es-Sultan have been built and rebuilt many times, due mainly to collapse caused by earthquakes, which are common in the region. One of these events may be the basis for the story of Joshua. Modern-day Jericho is a popular tourist destination due to its pleasant climate, historical sites, and religious significance. Located in the disputed West Bank region of Israel, it has been ceded to Palestinian control as part of recent treaty agreements. 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.
ISS005-E-12804	Tarbela Dam, Pakistan: 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 (chutes on either of side of the main dam). With a volume of 142,000,000 cubic meters, the Tarbela Dam is the largest earth and rock fill dam in the world and stands 147 meters above the Indus riverbed. Its reservoir occupies an area of 37 square kilometers. While the dam has fulfilled its purpose in storing water for agricultural use in Pakistan, there have been environmental consequences to the Indus river delta. Reduction of seasonal flooding and reduced water flows to the delta have decreased mangrove stands and the abundance of some fish species.
ISS005-E-21295	Fire Scars in Australia's Simpson Desert: Bright orange fire scars show up the underlying dune sand in the Simpson Desert, 300 kilometers east of Alice Springs. The background is an intricate pattern of sand cordons that angle across the view from lower left to upper right. These cordons are now mostly green, showing that, although they were once shifting, they have become more or less static—“tied down” by a vegetation mat of desert scrub. The fire scars were produced in a recent fire, probably within the last 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. Each frond starts at some point on the earlier fire scar, and sharp tips of the fronds show where the fires burned out naturally at the end of the episode. The sharp edges of the fire scars are due to steady but probably weak southwesterly winds—weaker winds reduced sparking of additional fires in adjacent scrub on either side of the main fire pathways. Over time, the scars will become less distinct as vegetation grows back.

This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .
	NASA Responsible Official: Susan Runco Curator: jsc-earthweb@mail.nasa.gov Contributors: Earth Sciences Web Team	National Aeronautics and Space Administration Lyndon B. Johnson Space Center	International Space Station National Laboratory Last Update:
Server: 1