Multimedia Gallery
July 29, 2013
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.
Videos credited to the National Science Foundation, an agency of the U.S. Government, may be distributed freely. However, some materials within the videos may be copyrighted. If you would like to use portions of NSF-produced programs in another product, please contact the Video Team in the Office of Legislative and Public Affairs at the National Science Foundation.
Additional information about general usage can be found in Conditions.
Damaging volcanic ash stays well beyond welcome
Science NationVolcanic ash can become a multimillion-dollar nightmare, lingering in the skies, getting into engines and damaging aircraft. With the emergence of aviation in the last 50 years as a key component of global travel and transport, the importance of understanding how long ash is suspended in the atmosphere and how far it is transported has taken on greater importance. With support from NSF, volcanologist Dork Sahagian and his colleagues are learning more about the aerodynamic properties of ash, including how long different sizes and shapes stay in the atmosphere.
Credit: National Science Foundation
Images and other media in the National Science Foundation Multimedia Gallery are available for use in print and electronic material by NSF employees, members of the media, university staff, teachers and the general public. All media in the gallery are intended for personal, educational and nonprofit/non-commercial use only.
Videos credited to the National Science Foundation, an agency of the U.S. Government, may be distributed freely. However, some materials within the videos may be copyrighted. If you would like to use portions of NSF-produced programs in another product, please contact the Video Team in the Office of Legislative and Public Affairs at the National Science Foundation.
Additional information about general usage can be found in Conditions.