ISS018-E-10206
| NASA Photo ID | ISS018-E-10206 |
| Focal Length | 800mm |
| Date taken | 2008.12.03 |
| Time taken | 10:22:11 GMT |
Resolutions offered for this image:
1000 x 664 pixels 540 x 359 pixels 720 x 480 pixels 3072 x 2098 pixels 640 x 437 pixels
1000 x 664 pixels 540 x 359 pixels 720 x 480 pixels 3072 x 2098 pixels 640 x 437 pixels
MAP LOCATION
latitude/longitude of image
latitude/longitude of image
Spacecraft nadir point: 39.5° N, 41.2° E
Photo center point: 38.6° N, 42.2° E
Photo center point: 38.6° N, 42.2° E
Nadir to Photo Center: Southeast
Spacecraft Altitude: 186 nautical miles (344km)
IMAGE DETAILS
features and other details
features and other details
Country or Geographic Name: | TURKEY |
Features: | MT. NEMRUT VOL., CALDERA LAKE, SNOW |
Cloud Cover Percentage: | 10 (1-10)% |
Sun Elevation Angle: | 26° |
Sun Azimuth: | 200° |
CAMERA INFORMATION
information about camera used
information about camera used
Camera: | Nikon D2Xs Electronic Still Camera |
Focal Length: | 800mm |
Camera Tilt: | 23 degrees |
Format: | 4288E: 4288 x 2848 pixel CMOS sensor, RGBG imager color filter |
Film Exposure: | |
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| Width | Height | Annotated | Cropped | Purpose | Links |
|---|---|---|---|---|---|
| 1000 pixels | 664 pixels | No | Yes | NASA's Earth Observatory web site | Download Image |
| 540 pixels | 359 pixels | Yes | Yes | NASA's Earth Observatory web site | Download Image |
| 720 pixels | 480 pixels | Yes | Yes | NASA's Earth Observatory web site | Download Image |
| 3072 pixels | 2098 pixels | No | No | Download Image | |
| 640 pixels | 437 pixels | No | No | Download Image |
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Image Caption: Mount Nemrut, Turkey
This detailed astronaut photograph centers on the summit caldera of Mount Nemrut (Nemrut Dagi in Turkish), a stratovolcano in the eastern Anatolia region of Turkey, along the shoreline of Lake Van. Winter snow blankets the 2,948-meter (9,672-foot) summit of the mountain, highlighting the brown caldera rim. (A caldera is a large crater, usually circular or elliptical, formed when the underlying magma chamber empties rapidly.)
The snow also highlights the irregular shape and wrinkled surfaces of several lava flows present in the eastern portion of the caldera. Lava flows associated with Mt. Nemrut range in composition from thin, fluid basalt to thick, glassy obsidian. A cold-water caldera lake occupies the western half of the summit.
The geologic record at Mt. Nemrut indicates numerous prehistoric explosive eruptions during the Holocene Epoch (from about 10,000 years ago through the present); the last observed eruption of lava was in 1441. The last well-documented explosive eruption occurred during 1650. Volcanism at Mt. Nemrut is the result of tectonic activity associated with the collision of the Arabian and Eurasian Plates; this collision is ongoing, and thevolcano is merely quiescent at present.
This detailed astronaut photograph centers on the summit caldera of Mount Nemrut (Nemrut Dagi in Turkish), a stratovolcano in the eastern Anatolia region of Turkey, along the shoreline of Lake Van. Winter snow blankets the 2,948-meter (9,672-foot) summit of the mountain, highlighting the brown caldera rim. (A caldera is a large crater, usually circular or elliptical, formed when the underlying magma chamber empties rapidly.)
The snow also highlights the irregular shape and wrinkled surfaces of several lava flows present in the eastern portion of the caldera. Lava flows associated with Mt. Nemrut range in composition from thin, fluid basalt to thick, glassy obsidian. A cold-water caldera lake occupies the western half of the summit.
The geologic record at Mt. Nemrut indicates numerous prehistoric explosive eruptions during the Holocene Epoch (from about 10,000 years ago through the present); the last observed eruption of lava was in 1441. The last well-documented explosive eruption occurred during 1650. Volcanism at Mt. Nemrut is the result of tectonic activity associated with the collision of the Arabian and Eurasian Plates; this collision is ongoing, and thevolcano is merely quiescent at present.
