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Astronaut Photography of Earth - Display Record

ISS008-E-12109

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
View	ISS008-E-12109.JPG	48178	540	347	Yes	Yes	NASA's Earth Observatory web site
View	ISS008-E-12109.JPG	68644	639	435	No	No
View	ISS008-E-12109.JPG	115480	1000	676	No	Yes	NASA's Earth Observatory web site	Color adjusted

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	File Name	File Size (bytes)	Width	Height	Annotated	Cropped	Purpose	Comments
Request	ISS008-E-12109.JPG	984198	3032	2064	No	No
Request	ISS008-E-12109.JPG	2087166	2496	1688	No	Yes	NASA's Earth Observatory web site	Color adjusted

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Electronic Image Data

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Identification

Mission: ISS008 Roll: E Frame: 12109 Mission ID on the Film or image: ISS008
Country or Geographic Name: ATLANTIC OCEAN
Features: PAN-ICEBERGS, CLOUDS, SOUTH GEORGIA IS.
Center Point Latitude: -52.0 Center Point Longitude: -34.0 (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:

Camera

Camera Tilt: High Oblique
Camera Focal Length: 50mm
Camera: E4: Kodak DCS760C Electronic Still Camera
Film: 3060E : 3060 x 2036 pixel CCD, RGBG array.

Quality

Film Exposure:
Percentage of Cloud Cover: 100 (76-100)

Nadir

Date: 20040106 (YYYYMMDD)GMT Time: 181809 (HHMMSS)
Nadir Point Latitude: -51.0, Longitude: -24.5 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: West
Sun Azimuth: 271 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 201 nautical miles (372 km)
Sun Elevation Angle: 31 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1283

Captions

Five-Year-Old Icebergs near South Georgia Island:
This photograph from the International Space Station shows two pieces of a massive iceberg that broke off from the Ronne Ice Shelf in October 1998. Taken on January 6, 2004, the pieces of iceberg A-38 have floated relatively close to South Georgia Island. After 5 years and 3 months adrift, they are approximately 1,500 nautical miles from their origin. In the oblique image, taken a few minutes later, the cloud pattern is indicative of the impact of the mountainous islands on the local wind field. At this time, the icebergs are sheltered in the lee side of the island.

When the mass first broke away from the Antarctic Ronne Ice Shelf into the Weddell Sea, it was more than 90 miles long and 30 miles wide and was one of the largest reported icebergs in more than a decade. By the end of October 1998, the iceberg, A-38, began to break-up. Today A-38A is still longer than 40 nautical miles, and A-38B is more than 25 nautical miles long.

When ice shelves break up, it is common to ask, “Was the calving related to global climate change?” Dr. Ted Scambos, a scientist at the National Snow and Ice Data Center, compared the calving of Iceberg A-38 to events on the Larsen Ice Shelf and concluded that, “in contrast to what is going on in the northern reaches of the Antarctic Peninsula, the A-38 iceberg calving event on the Ronne Ice Shelf is unlikely to be climate-related.” Over a fifty-year period, the shelf has expanded and contracted, and the A-38 berg actually brought the ice shelf front back to the location it was when first mapped in 1957-58.

Positions and sizes of Antarctic Icebergs are reported by the National Ice Center.

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