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The Gateway to Astronaut Photography of Earth
Astronaut Photography of Earth - Display Record
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IdentificationMission: ISS008 Roll: E Frame: 12555 Mission ID on the Film or image: ISS008
Country or Geographic Name: ATLANTIC OCEAN
Features: ICEBERG, SEA ICE FRAGMENTS
Center Point Latitude: -55.0 Center Point Longitude: -39.0 (Negative numbers indicate south for latitude and west for longitude)
Stereo: (Yes indicates there is an adjacent picture of the same area)
ONC Map ID: JNC Map ID:
CameraCamera Tilt: High Oblique
Camera Focal Length: 400mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.
Percentage of Cloud Cover: 10 (0-10)
NadirDate: 20040122 (YYYYMMDD)GMT Time: 123612 (HHMMSS)
Nadir Point Latitude: -50.9, Longitude: -34.0 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: Southwest
Sun Azimuth: 46 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 205 nautical miles (380 km)
Sun Elevation Angle: 52 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1530
CaptionsIceberg Melt, Near South Georgia:
Astronauts on board the International Space Station took this detailed view of melt water pooled on the surface of iceberg A-39D, an iceberg measuring 2 km wide by 11 km long and currently drifting near South Georgia Island. The different intensities of blue are interpreted as different water depths. From the orientation of the iceberg, the deepest water (darkest blue) lies at the westernmost end of the iceberg. The water pools have formed from snowmeltólate January is the peak of summer in the Southern Hemisphere.
This iceberg was part of the original A-38 iceberg (http://nsidc.org/icebergs/a38/) that calved from the Ronne Ice Shelf in October 1998. Originally the ice was between 200 and 350 meters thick. This piece of that iceberg is now probably about 150 meters thick, with around 15 m sticking up above the surface of the water.
This photograph was taken by astronauts looking south over the south Atlantic Ocean from the International Space Station on January 22, 2004. An accompanying oblique view, ISS008-E-12654, shows all three large remnant pieces of A-38 close to South Georgia Island. Based on the astronaut observations, Dr. Ted Scambos fo the National Snow and Ice Data Center decided to continue to track the icebergs. By April they had broken up, potentially as a result of the meltponding.
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