Earth Imaging Journal: Remote Sensing, Satellite Images, Satellite Imagery
Breaking News
Earth Day: Kids Saving the Planet & Wildlife – Barron Prize
The Gloria Barron Prize for Young Heroes is a...
Space Foundation Names TheraLight, LLC as Space Certification Program Partner
COLORADO SPRINGS, Colo.  — Space Foundation, a 501(c)(3) global...
Australian Space Forum to put space sector in spotlight
The Australian Space Forum to be held in South...
Trimble Introduces Siteworks SE Starter Edition Site Positioning Software for Construction Surveying
SUNNYVALE, Calif. —Trimble (NASDAQ:TRMB) introduced today the Trimble® Siteworks SE Starter Edition, an...
Accelerating exploration for geothermal energy with UAV magnetometry conducted in North-Central Nevada
Reno, Nevada, USA; Riga, Latvia - Geophysics faculty and...

Sept. 11, 2011

Sept. 2, 2010

The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1) satellite captured these natural-color images of the Hudson River and East River. Both images are rotated, and north is at right. The top image shows the area on Sept. 12, 2011. The bottom image shows the same place about a year earlier, on Sept. 2, 2010. In September 2010, the water is navy blue. One year later, the water is reddish brown, and the hue appears more intense in the Hudson River than in the nearby East River.

Flooding not only raises river levels, but also increases the amount of sediment they carry. Torrential rain eats away at the ground, washing mud and debris into streams. After it is deposited into a river, sediment may sink to the bottom of the riverbed or may flow with the water toward the sea. Multiple rivers feed the Hudson, and some of the sediment winding up in the river in early September 2011 included reddish clays from the Catskills region, according to The New York Times.

NASA Earth Observatory image created by Jesse Allen and Robert Simmon, using EO-1 ALI data provided courtesy of the NASA EO-1 team. Caption by Michon Scott.

Comments are closed.