Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia

Stanley N. Williams; Yuji Sano; Hiroshi Wakita

doi:10.1029/GL014i010p01035

Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia

Stanley N. Williams, Yuji Sano, Hiroshi Wakita

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Abstract

High helium‐3/helium‐4 ratios, up to 6.6R_atm (6.6 times the atmospheric ratio of 1.40 × 10⁻⁶) 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.

Original language	English (US)
Pages (from-to)	1035-1038
Number of pages	4
Journal	Geophysical Research Letters
Volume	14
Issue number	10
DOIs	https://doi.org/10.1029/GL014i010p01035
State	Published - Oct 1987
Externally published	Yes

ASJC Scopus subject areas

Geophysics
General Earth and Planetary Sciences

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title = "Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia",

abstract = "High helium‐3/helium‐4 ratios, up to 6.6Ratm (6.6 times the atmospheric ratio of 1.40 × 10−6) 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.",

author = "Williams, {Stanley N.} and Yuji Sano and Hiroshi Wakita",

year = "1987",

month = oct,

doi = "10.1029/GL014i010p01035",

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pages = "1035--1038",

journal = "Geophysical Research Letters",

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T1 - Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia

AU - Williams, Stanley N.

AU - Sano, Yuji

AU - Wakita, Hiroshi

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N2 - High helium‐3/helium‐4 ratios, up to 6.6Ratm (6.6 times the atmospheric ratio of 1.40 × 10−6) 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.

AB - High helium‐3/helium‐4 ratios, up to 6.6Ratm (6.6 times the atmospheric ratio of 1.40 × 10−6) 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.

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Helium‐3 emission from Nevado Del Ruiz Volcano, Colombia

Abstract

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