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Advanced Communication Technology Satellite (ACTS) and Earth of Johnson Space Center (JSC)
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Lake Valencia, Venezuela
| Title |
Lake Valencia, Venezuela |
| Description |
Lago de Valencia (Lake Valencia) is located in north-central Venezuela and is the largest freshwater lake in the country. The lake was formed approximately 2-3 million years ago due to faulting and subsequent damming of the Valencia River. The lake has been completely dry during several discrete periods of its geologic history. Since 1976 Lake Valencia water levels have risen due to diversion of water from neighboring watersheds—it currently acts as a reservoir for the surrounding urban centers (such as Maracay). The vivid green algal blooms present in this image result from a continual influx of untreated wastewater from the surrounding urban, agricultural, and industrial land uses. This contributes to ongoing eutrophication, contamination, and salinization of the lake. Despite its picturesque location between the Cordillera de la Costa to the north and the Serrania del Interior to the south, Lake Valencia's poor water quality limits opportunities for tourism and recreational activities. Astronaut photograph ISS010-E-5194 [ http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS010&roll=E&frame=5194 ] was acquired October 27, 2004 with a Kodak K-760C digital camera with a 180 mm lens and is provided by the ISS Crew Earth Observations experiment and the Image Science & Analysis Group, Johnson Space Center. The International Space Station Program [ http://spaceflight.nasa.gov/ ] supports the laboratory to help astronauts take pictures of Earth that will be of the greatest value to scientists and the public, and to make those images freely available on the Internet. Additional images taken by astronauts and cosmonauts can be viewed at the NASA/JSC Gateway to Astronaut Photography of Earth. [ http://eol.jsc.nasa.gov/ ] |
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Mega-iceberg A53a, South Atl
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nasa, nasaimageofthedaygalle
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The mega-iceberg A53a (upper
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ISS016-E-23196
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-01-15 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ISS016-E-23196 |
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Mega-iceberg A53a, South Atl
…
nasa, nasaimageofthedaygalle
…
The mega-iceberg A53a (upper
…
ISS016-E-23196
| mediatype |
IMAGE |
| mediatype |
image |
| date |
2008-01-15 |
| creator |
NASA -- NASA Image Of The Day |
| identifier |
ISS016-E-23196 |
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ACTS\TOS leaves cargo bay on
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| Title |
ACTS\TOS leaves cargo bay on flight day one |
| Description |
The Advanced Communications Technology Satellite (ACTS) with its Transfer Orbit Stage (TOS) leaves the cargo bay of the Earth orbiting Space Shuttle Discovery on Flight Day one. |
| Date Taken |
1993-09-12 |
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ACTS/TOS after release from
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| Title |
ACTS/TOS after release from Shuttle Discovery |
| Description |
The Advanced Communications Technology Satellite (ACTS) with its Transfer Orbit Stage (TOS) is backdropped over the blue ocean following its release from the Earth-orbiting Space Shuttle Discovery. ACTS/TOS deploy was the first major task performed on the almost ten-day mission. |
| Date Taken |
1993-09-12 |
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STS-55 Earth observation of
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| Title |
STS-55 Earth observation of the Timor Sea |
| Description |
STS-55 Earth observation taken from Columbia, Orbiter Vehicle (OV) 102, shows the Timor Sea along the south coast of Timor. The sunglint pattern shows a sharp boundary in sea surface temperature, with cooler water along the coast and warmer water offshore. The sunglint brightness reveals water surface roughness with bright indicating smooth water and dark representing rough water. Cooler water is smoother because it acts to stabilize the atmospheric boundary layer, while the warm water acts to destabilize the atmosphere. Another indication of water temperature is the cloud pattern. Advection within the atmosphere as a result of warming at the sea surface forms low-level clouds with the small, popcorn-like appearance seen in upper right corner of the photograph. The cool water, on the other hand, is relatively free of the popcorn-like clouds. The distribution of the clouds indicates that the wind is blowing toward the upper right corner of the photograph. Also note the line of low-level |
| Date Taken |
1993-05-06 |
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STS-65 Earth observation of
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STS-65 Earth observation of dust plumes from Rio Grande in Southern Bolivia |
| Description |
STS-65 Earth observation taken aboard Columbia, Orbiter Vehicle (OV) 102, is of dust plumes from the Rio Grande in Southern Bolivia. A series of dust plumes can be seen rising from sand banks in the Rio Grande of southern Bolivia, bottom right of this northeast-looking view. The Rio Grande brings sediment from the Andes (foothills visible in the foreground, bottom left) and flows across the flat country of the northern Chaco plain. During the low-flow season, sand banks of this sediment are exposed to northerly winds which often blow dust into the surrounding forest. One of the significances of the dust plumes is that dust acts as a source of nutrient for the local soils. This is the most impressive example of dust ever recorded on Shuttle photography from this river. Such plumes have been seen on photographs from four previous missions (STS-31, STS-47, STS-48, STS-51I) emanating from the Rio Grande. The plumes are regularly space because the sand is blown only from those reaches of th |
| Date Taken |
1994-07-23 |
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