| Автор | Williams, Stanley N. |
| Автор | Sano, Yuji |
| Автор | Wakita, Hiroshi |
| Дата выпуска | 1987 |
| dc.description | 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. |
| Формат | application.pdf |
| Копирайт | Copyright 1987 by the American Geophysical Union. |
| Тема | Volcanology |
| Тема | Volcanology: Eruption mechanisms |
| Тема | Volcanology: Hydrothermal systems |
| Тема | Volcanology: Physics and chemistry of magma bodies |
| Тема | Volcanology: Instruments and techniques |
| Название | Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia |
| Тип | article |
| DOI | 10.1029/GL014i010p01035 |
| Electronic ISSN | 1944-8007 |
| Print ISSN | 0094-8276 |
| Журнал | Geophysical Research Letters |
| Том | 14 |
| Первая страница | 1035 |
| Последняя страница | 1038 |
| Аффилиация | Williams, Stanley N.; Department of Geology and Geophysics, Louisiana State University |
| Аффилиация | Sano, Yuji; Laboratory for Earthquake Chemistry, University of Toyko |
| Аффилиация | Wakita, Hiroshi; Laboratory for Earthquake Chemistry, University of Toyko |
| Выпуск | 10 |
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| Библиографическая ссылка | Williams, S. N.M. L. V.CalvacheN. C.SturchioA. C.LondoñoR.MendezN. P.GarciaB. S.CepedaJ. L. V.RodriguezN.Rojas, The degassing of sulfur dioxide from Nevado del Ruiz volcano, Colombia: total flux and isotopic constraints on its source (abstract, Eos Trans. AGU, 68, 19, 405, 1987 |
