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Title: Comparison of measured and simulated concentrations of 133 Xe in the shallow subsurface

Abstract

Radioactive isotopes of the noble gases xenon and argon are considered primary indicators of an underground nuclear explosion. However, high atmospheric concentrations from other anthropogenic sources may lead to an elevation in the underground levels of these gases, particularly in times of increasing atmospheric pressure. In 2014, a week long sampling campaign near Canadian Nuclear Laboratories in the Ottawa River Valley resulted in first of their kind measurements of atmospheric 133Xe that had been pressed into the subsurface. In an effort to better understand this imprinting process, a second follow-up sampling campaign was conducted in the same location in 2016. The results of the second sampling campaign, where samples were collected at depths of 1 and 2 meters over a 14 day period and measured for their 133Xe concentration, are presented here. Gas transport and sample concentrations were predicted using the Subsurface Transport over Multiple Phases (STOMP) simulator. These results are examined and compared to the corresponding experimental results.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438992
Report Number(s):
PNNL-SA-132618
Journal ID: ISSN 0265-931X; DN2001000
DOE Contract Number:
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Environmental Radioactivity; Journal Volume: 189; Journal Issue: C
Country of Publication:
United States
Language:
English
Subject:
Radionuclide detection; Medical isotope production; On-Site Inspection; CTBT

Citation Formats

Johnson, C., Biegalski, S. R., Lowrey, J. D., Rockhold, M. L., and Haas, D. A. Comparison of measured and simulated concentrations of 133 Xe in the shallow subsurface. United States: N. p., 2018. Web. doi:10.1016/j.jenvrad.2018.04.010.
Johnson, C., Biegalski, S. R., Lowrey, J. D., Rockhold, M. L., & Haas, D. A. Comparison of measured and simulated concentrations of 133 Xe in the shallow subsurface. United States. doi:10.1016/j.jenvrad.2018.04.010.
Johnson, C., Biegalski, S. R., Lowrey, J. D., Rockhold, M. L., and Haas, D. A. Sat . "Comparison of measured and simulated concentrations of 133 Xe in the shallow subsurface". United States. doi:10.1016/j.jenvrad.2018.04.010.
@article{osti_1438992,
title = {Comparison of measured and simulated concentrations of 133 Xe in the shallow subsurface},
author = {Johnson, C. and Biegalski, S. R. and Lowrey, J. D. and Rockhold, M. L. and Haas, D. A.},
abstractNote = {Radioactive isotopes of the noble gases xenon and argon are considered primary indicators of an underground nuclear explosion. However, high atmospheric concentrations from other anthropogenic sources may lead to an elevation in the underground levels of these gases, particularly in times of increasing atmospheric pressure. In 2014, a week long sampling campaign near Canadian Nuclear Laboratories in the Ottawa River Valley resulted in first of their kind measurements of atmospheric 133Xe that had been pressed into the subsurface. In an effort to better understand this imprinting process, a second follow-up sampling campaign was conducted in the same location in 2016. The results of the second sampling campaign, where samples were collected at depths of 1 and 2 meters over a 14 day period and measured for their 133Xe concentration, are presented here. Gas transport and sample concentrations were predicted using the Subsurface Transport over Multiple Phases (STOMP) simulator. These results are examined and compared to the corresponding experimental results.},
doi = {10.1016/j.jenvrad.2018.04.010},
journal = {Journal of Environmental Radioactivity},
number = C,
volume = 189,
place = {United States},
year = {Sat Sep 01 00:00:00 EDT 2018},
month = {Sat Sep 01 00:00:00 EDT 2018}
}