TY - JOUR
T1 - Soil 222Rn pulse during the initial phase of the June-August 1995 eruption of Cerro Negro, Nicaragua
AU - Connor, Charles
AU - Hill, Brittain
AU - LaFemina, Pete
AU - Navarro, Marta
AU - Conway, Michael
N1 - Funding Information:
Field assistanceo f Christen Lugo, Oscar Canales. and Oscar Urbinas of INETER and Andrew Macfarlane is gratefully acknowledged. Comments by William Murphy, Budhi Sagar and Linda Kovach, and reviews by Alexander McBirney and an anonymous reviewer, improved the manuscript. This manuscript is the result of work performed at the Center for Nuclear Waste Regulatory Analyses (CNWRA) for the U.S. Nuclear Regulatory Commission (NRC), Office of Regulatory Research,D ivision of Regulatory Applications, under Contract No. NRC-02-93-005. This research is an independent product of the CNWRA and does not necessarily reflect the views or regulatory position of the NRC. This researchw as also funded by National Science Foundation Grant EAR-9206048.
PY - 1996/9
Y1 - 1996/9
N2 - The June-August 1995 eruption of Cerro Negro, a small-volume basaltic cinder cone in Nicaragua, provided a unique opportunity to quantify 222Rn degassing from soils in response to explosive volcanic activity. 222Rn was monitored at 29 stations using electrostatically charged teflon 222Rn detectors distributed north and southeast of the volcano. A pulse of elevated 222Rn degassing occurred early in the eruption along a > 1 km long zone, extending at least 750 m beyond the base of the cinder cone. Observation of this 222Rn pulse shows that large changes in soil 222Rn concentration can occur simultaneously at widely separated stations in response to even comparatively small-volume intrusions and volcanic eruptions. Frequent 222Rn sampling at multiple stations provides a sense of the magnitude, time scales and area affected by convective gas transport during volcanic eruptions.
AB - The June-August 1995 eruption of Cerro Negro, a small-volume basaltic cinder cone in Nicaragua, provided a unique opportunity to quantify 222Rn degassing from soils in response to explosive volcanic activity. 222Rn was monitored at 29 stations using electrostatically charged teflon 222Rn detectors distributed north and southeast of the volcano. A pulse of elevated 222Rn degassing occurred early in the eruption along a > 1 km long zone, extending at least 750 m beyond the base of the cinder cone. Observation of this 222Rn pulse shows that large changes in soil 222Rn concentration can occur simultaneously at widely separated stations in response to even comparatively small-volume intrusions and volcanic eruptions. Frequent 222Rn sampling at multiple stations provides a sense of the magnitude, time scales and area affected by convective gas transport during volcanic eruptions.
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U2 - 10.1016/0377-0273(96)00020-0
DO - 10.1016/0377-0273(96)00020-0
M3 - Article
AN - SCOPUS:0030436597
SN - 0377-0273
VL - 73
SP - 119
EP - 127
JO - Journal of Volcanology and Geothermal Research
JF - Journal of Volcanology and Geothermal Research
IS - 1-2
ER -