File:Dave Johnston with gas-detection instrument at Mount St. Helens, 4 April 1980 (USGS) 2.jpg
Size of this preview: 390 × 599 pixels. Other resolutions: 156 × 240 pixels | 312 × 480 pixels | 500 × 768 pixels | 666 × 1,024 pixels | 1,333 × 2,048 pixels | 2,679 × 4,116 pixels.
Original file (2,679 × 4,116 pixels, file size: 5.37 MB, MIME type: image/jpeg)
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 14:14, 10 April 2010 | 2,679 × 4,116 (5.37 MB) | Carcharoth | {{Information |Description=The late Dr. David Johnston, U.S. Geological Survey, using a correlation spectrometer which measures ultra-violet radiation as an indicator of the sulfur dioxide content of gases ejected from Mount St. Helens. Skamania County, W |
File usage
There are no pages that use this file.
Global file usage
The following other wikis use this file:
- Usage on fr.wikipedia.org