Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia
Williams, Stanley N.; Sano, Yuji; Wakita, Hiroshi; Williams, Stanley N.; Department of Geology and Geophysics, Louisiana State University; Sano, Yuji; Laboratory for Earthquake Chemistry, University of Toyko; Wakita, Hiroshi; Laboratory for Earthquake Chemistry, University of Toyko
Журнал:
Geophysical Research Letters
Дата:
1987
Аннотация:
High helium‐3/helium‐4 ratios, up to 6.6R<sub>atm</sub> (6.6 times the atmospheric ratio of 1.40 × 10<sup>−6</sup>) were observed in nine samples of gases and hot waters from seven sites located around the volcano Nevado del Ruiz, Colombia. The values of the ratio decrease with distance from the crater. Such a tendency coincides well with the pattern first reported from the volcano Ontake, central Japan, and suggests a general signature of helium isotope ratios around individual volcanoes. The corrected helium‐3/helium‐4 ratios at one gas vent sampled twice over six months increased. This is interpreted to mean that the mantle contribution of helium may have increased with time.
322.5Кб
Related items
Showing items related by title, author, creator and subject.
-
Ida, Yoshiaki; Ida, Yoshiaki; Earthquake Research Institute, University of Tokyo, Japan (1996)
-
Toutain, Jean‐Paul; Bachelery, Patrick; Blum, Pierre‐Antoine; Cheminee, Jean‐Louis; Delorme, Hugues; Fontaine, Laurent; Kowalski, Philippe; Taochy, Philippe; Toutain, Jean‐Paul; Institut de Physique du Globe de Paris, Observatoire Volcanologique, de Piton de la Fournaise; Bachelery, Patrick; Départment des Sciences de la Terre, Université de Le Réunion; Blum, Pierre‐Antoine; Institut de Physique du Globe de Paris, Observatories Volcanologiques; Cheminee, Jean‐Louis; Institut de Physique du Globe de Paris, Observatories Volcanologiques; Delorme, Hugues; Institut de Physique du Globe de Paris, Observatories Volcanologiques; Fontaine, Laurent; Institute de Physique du Globe de Paris, Observatoire Volcanologique, du Piton de la Fournaise; Kowalski, Philippe; Institute de Physique du Globe de Paris, Observatoire Volcanologique, du Piton de la Fournaise; Taochy, Philippe; Institute de Physique du Globe de Paris, Observatoire Volcanologique, du Piton de la Fournaise (1992)
-
Kasameyer, Paul; Wilt, Michael; Daily, William; Felske, Donald; Kasameyer, Paul; Lawrence Livermore National Laboratory; Wilt, Michael; Lawrence Livermore National Laboratory; Daily, William; Lawrence Livermore National Laboratory; Felske, Donald; Lawrence Livermore National Laboratory (1991)