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Posts Tagged ‘USGS’

You Asked for It: Mangroves

Posted by Laurie Frost on June 29, 2010

A reader requested a hi-res shot of a mangrove, so I had a look around. On each of these sites there are at least a few — and often many — more images to choose from.

Here are a few from the US Fish & Wildlife Service’s National Digital Library:

WO3690 Black Mangrove Swamp in Texas

Volume1\5CD6962D-A3E0-D2A3-F39EC675A2151B94.jpg (Full Resolution Volume and Filename)

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Posted in Fish and Wildlife Service, National Park Service, NOAA, NOAA Photo Library, Places, Plants | Tagged: , , , , , , , , , | Comments Off on You Asked for It: Mangroves

Lesser Known Volcanos of the USA

Posted by Laurie Frost on April 20, 2010

Next month marks the 30th anniversary of the eruption of Mount St. Helens in Washington State. But did you know that in the United States alone there are 169 volcanoes defined as active by the U.S. Geological Survey and that 54 of these are considered to pose a threat to the public?  Here’s a map of the 169 from the U.S. Geological Survey [USGS], which is also the source of  the map’s caption, as well as the other public domain images and information in this post.

The U.S. Geological Survey (USGS) is responsible for monitoring our Nation’s 170 active volcanoes (red triangles) for signs of unrest and for issuing timely warnings of hazardous activity to government officials and the public. This responsibility is carried out by scientists at the five volcano observatories operated by the USGS Volcano Hazards Program and also by State and university cooperators.

Just this past August (8/20/09), Shishaldin Volcano on Unimak Island, part of Izembek National Wildlife Refuge, Alaska, was erupted. [Photographer: Cyrus Read, U.S. Geological Survey]

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Posted in Places, US Geological Survey | Tagged: , , , , , , , , , , , , , , , | 2 Comments »