File:Dave Johnston with gas-detection instrument at Mount St. Helens, 4 April 1980 (USGS) 2.jpg
![File:Dave Johnston with gas-detection instrument at Mount St. Helens, 4 April 1980 (USGS) 2.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/a/a9/Dave_Johnston_with_gas-detection_instrument_at_Mount_St._Helens%2C_4_April_1980_%28USGS%29_2.jpg/390px-Dave_Johnston_with_gas-detection_instrument_at_Mount_St._Helens%2C_4_April_1980_%28USGS%29_2.jpg?20100410141443)
Original file (2,679 × 4,116 pixels, file size: 5.37 MB, MIME type: image/jpeg)
Captions
Captions
Summary
editDescriptionDave Johnston with gas-detection instrument at Mount St. Helens, 4 April 1980 (USGS) 2.jpg | 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, Washington. 1980. Published on p. B100 in U.S. Geological Survey. Professional paper 1240-B. 1981. | ||
Date | |||
Source | ID. Mount St. Helens - 32 (USGS) - alternative ID number: msh00032 | ||
Author | Unknown (taken by or for USGS) | ||
Other versions |
|
Licensing
editPublic domainPublic domainfalsefalse |
![]() |
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
Bahasa Indonesia ∙ català ∙ čeština ∙ Deutsch ∙ eesti ∙ English ∙ español ∙ français ∙ galego ∙ italiano ∙ Nederlands ∙ português ∙ polski ∙ sicilianu ∙ suomi ∙ Tiếng Việt ∙ Türkçe ∙ български ∙ македонски ∙ русский ∙ മലയാളം ∙ 한국어 ∙ 日本語 ∙ 中文 ∙ 中文(简体) ∙ 中文(繁體) ∙ العربية ∙ فارسی ∙ +/− |
![]() |
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 (talk | contribs) | {{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 |
You cannot overwrite this file.
File usage on Commons
The following page uses this file:
File usage on other wikis
The following other wikis use this file:
- Usage on fr.wikipedia.org
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
_error | 0 |
---|