Tuesday, June 23, 2015

[Geology2] Panorama of the Pacific Northwest June 22, 2015

 June 22, 2015

Panorama of the Pacific Northwest
acquired February 28, 2015 download large image (4 MB, JPEG, 4928x3280)

This panoramic photograph was taken by an astronaut looking north from the International Space Station. The snow-covered Cascade Range of the U.S. northwest in the foreground gives way to the Rocky Mountains and Coast Mountains in Canada, with Vancouver Island just offshore. Several active volcanoes—Mount St. Helens, Mount Rainier and Mount Hood—dot the Cascades. One of the space station's solar arrays points into the view on the upper left.

Short-lens panoramic views often reveal environmental patterns. The cloud bands of an approaching winter storm (upper left) signal a bout of approaching rain to what is one of the wettest parts of North America. Greener, forested landscapes are evidence of the wet climate experienced by people who live near the coast and on the seaward slopes of the mountains. By contrast, the tan colors of the dry Columbia Basin (lower right) show the rain shadow effect of the Cascades in preventing rain-bearing air masses from reaching the basin. In the foreground, the Columbia River drains the basin, cuts directly through the Cascades at Columbia River Gorge, and then flows into the Pacific Ocean.

Cities typically appear as dull gray zones, but astronauts learn to detect these sometimes difficult targets. In this image, Portland, the Seattle-Tacoma metropolis, and Vancouver are all visible. Mount Rainier lies immediately southeast of Seattle about 65 kilometers (40 miles) away.

Astronaut photograph ISS042-E-294596 was acquired on February 28, 2015, with a Nikon D4 digital camera using a 22 millimeter lens, and is provided by the ISS Crew Earth Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space Center. The image was taken by a member of the Expedition 43 crew. The image has been cropped and enhanced to improve contrast, and lens artifacts have been removed. The International Space Station Program supports the laboratory as part of the ISS National Lab 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. Caption by M. Justin Wilkinson, Texas State University, Jacobs Contract at NASA-JSC.

ISS - Digital Camera



Posted by: Lin Kerns <linkerns@gmail.com>


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