Satellite Photos of Japan, Before and After

Posted In Japan Tsunami, News
Mar
14

google-satellite
First before-after image Google and GeoEye / March 12, 201

Satellite Photos of Japan, Before and After the Quake and Tsunami: VIEW PHOTOS

Excerpt from The New York Times,

Aerial photos taken over Japan have revealed the scale of devastation across dozens of suburbs and tens of thousands of homes and businesses.

Once on the page, hover over each satellite photo to compare satellite images, taken by GeoEye, from before and after the disaster.

Google Satellite Images
The images, from Google partner GeoEye, were generated by the IKONOS satellite,. View slideshow in Los Angeles Times

Japan Tsunami, Before & After: Zoomable Satellite Images, National Geographic


NASA Images Tsunami’s Effects on Northeastern Japan

Excerpt from NASA, EOS

nasa-japan-coast
Image Source: NASA/GSFC/LaRC/JPL, MISR Team

The extent of inundation from the destructive and deadly tsunami triggered by the March 11, 2011, magnitude 8.9 earthquake centered off Japan’s northeastern coast about 130 kilometers (82 miles) east of the city of Sendai is revealed in this before-and-after image pair from the Multi-angle Imaging SpectroRadiometer (MISR) instrument on NASA’s Terra spacecraft.

The new image, shown on the right, was acquired at 10:30 a.m. local time (01:30 UTC) on March 12, 2011 during Terra orbit 59731. For comparison, a MISR image from March 16, 2001, acquired under nearly identical illumination conditions during Terra orbit 6607, is shown on the left.

From top to bottom, each image extends from just north of the Abukuma River (which is about 21 kilometers, or 13 miles, south of Sendai) to south of the town of Minamisoma (population 71,000, located in Japan’s Fukushima Prefecture about 70 kilometers, or 44 miles, south of Sendai), and covers an area of 78 kilometers (48 miles) by 104 kilometers (65 miles). Flooding extending more than 4 kilometers (2.5 miles) inland from the eastern shoreline is visible in the post-earthquake image. The white sand beaches visible in the pre-earthquake view are now covered by water and can no longer be seen. Among the locations where severe flooding is visible is the area around Matsukawa-ura Bay, located just north and east of the image center.

These unique images enhance the presence of water in two ways. First, their near-infrared observations cause vegetated areas to appear red, which contrasts strongly with water. Second, by combining nadir (vertical-viewing) imagery with observations acquired at a view angle of 26 degrees, reflected sunglint enhances the brightness of water, which is shown in shades of blue. This use of observations at different view angles causes a stereoscopic effect, where elevated clouds have a yellow tinge at their top edges and blue tinge at their bottom edges.

Original Article

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