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IdentificationMission: ISS023 Roll: E Frame: 15093 Mission ID on the Film or image: ISS023
Country or Geographic Name: RUSSIAN FEDERATION
Features: URUP ISLAND, ICE FLOES, SNOW
Center Point: Latitude: 46.2 Longitude: 150.6 (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: 13
Camera Focal Length: 800mm
Camera: N2: Nikon D2Xs
Film: 4288E : 4288 x 2848 pixel CMOS sensor, RGBG imager color filter.
Percentage of Cloud Cover: 10 (0-10)
GMT Date: 20100330 (YYYYMMDD) GMT Time: 231324 (HHMMSS)
Nadir Point Latitude: 46.4, Longitude: 151.3 (Negative numbers indicate south for latitude and west for longitude)
Nadir to Photo Center Direction: West
Sun Azimuth: 127 (Clockwise angle in degrees from north to the sun measured at the nadir point)
Spacecraft Altitude: 183 nautical miles (339 km)
Sun Elevation Angle: 35 (Angle in degrees between the horizon and the sun, measured at the nadir point)
Orbit Number: 1115
CaptionsIce Floes off the Northeastern Tip of Urup Island, Russia
From space, it is sometimes difficult to tell where land ends and sea ice begins in the southern Sea of Okhotsk. This is particularly evident in this detailed astronaut photograph of the northeastern tip of Urup Island, one of the many islands in the Kuril chain, which extends from northern Japan to the Kamchatka Peninsula of Russia.
The approximately 120-kilometer-long island extends to the southwest from the point illustrated in the image; like the other Kuril Islands, Urup was formed from volcanic processes along the active subduction boundary between the Pacific and Okhotsk tectonic plates. The northeastern tip of the island and three small islands to the northeast are recognizable by their uniform cover of white snow and shadowing along the northwestern coastlines.
Sea ice that formed to the north in the Sea of Okhotsk has been piled up against the islands by prevailing northwesterly winds, forming an irregular mass connecting the islands (image center). The orientation of patchy low clouds over Urup Island (image lower left) also suggests that northwesterly winds are present.
Smaller ice floes are breaking off from the main ice mass at gaps between the islands and forming fingerlike projections of ice fragments that extend to the southeast (image lower right). Surface winds may be channeled through these gaps and accelerated, hastening the breakup and movement of ice.
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Recommended Citation: Earth Science and Remote Sensing Unit, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." .