Sujet
1981 - Gas Sampling around the Mount St. Helens Dome
Légende
USGS geologists gathered samples by hand from vents on the dome and crater floor. Additionally, sulfur dioxide gas was measured from a specially equipped airplane before, during, and after eruptions to determine "emission rates" for the volcano. 9/24/1981
Crédit
Photo12/Universal Images Group
Notre référence
UMG22A39_247
Licence
Droits gérés
Format disponible
15.7Mo (882.2Ko) / 24.4cm x 16.1cm / 2880 x 1904 (300dpi)