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)