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Title: ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY

Abstract

Highly industrialized areas pose significant challenges for surface based electrical resistivity characterization and monitoring due to the high degree of metallic infrastructure. The infrastructure is typically several orders of magnitude more conductive than the desired targets, preventing the geophysicist from obtaining a clear picture of the subsurface. These challenges may be minimized if steel-cased wells are used as long electrodes. We demonstrate a method of using long electrodes in a complex nuclear waste facility to monitor a simulated leak from an underground storage tank. The leak was simulated by injecting high conductivity fluid in a perforated well and the resistivity measurements were made before and after the leak test. The data were processed in four dimensions, where a regularization procedure was applied in both the time and space domains. The results showed a lowered resistivity feature develop south of the injection site. The time lapsed regularization parameter had a strong influence on the differences in inverted resistivity between the pre and post datasets, potentially making calibration of the results to specific hydrogeologic parameters difficult.

Authors:
; ; ;
Publication Date:
Research Org.:
Hanford Site (HNF), Richland, WA (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Environmental Management (EM)
OSTI Identifier:
967372
Report Number(s):
WRPS-43539 Rev 0
TRN: US0904451
DOE Contract Number:  
DE-AC27-08RV14800
Resource Type:
Journal Article
Journal Name:
(PRE-PUBLICATION) AMERICAN GEOPHYSICAL UNION IN GEOPHYSICAL RESEARCH LETTERS AND PRESENTED AT AMERICAN GEOPHYSICAL UNION WASHINGTON DC
Additional Journal Information:
Related Information: ARCADIS, HYDROGEOPHYSICS, GEOTOMO, WRPS
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; CALIBRATION; DIMENSIONS; ELECTRIC CONDUCTIVITY; ELECTRODES; MONITORING; MONITORS; RADIOACTIVE WASTES; TARGETS; UNDERGROUND STORAGE

Citation Formats

RUCKER DF, FINK JB, LOKE MH, and MYERS DA. ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY. United States: N. p., 2009. Web.
RUCKER DF, FINK JB, LOKE MH, & MYERS DA. ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY. United States.
RUCKER DF, FINK JB, LOKE MH, and MYERS DA. Thu . "ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY". United States. https://www.osti.gov/servlets/purl/967372.
@article{osti_967372,
title = {ENVIRONMENTAL MONITORING OF LEAKS USING TIME LAPSED LONG ELECTRODE ELECTRICAL RESISTIVITY},
author = {RUCKER DF and FINK JB and LOKE MH and MYERS DA},
abstractNote = {Highly industrialized areas pose significant challenges for surface based electrical resistivity characterization and monitoring due to the high degree of metallic infrastructure. The infrastructure is typically several orders of magnitude more conductive than the desired targets, preventing the geophysicist from obtaining a clear picture of the subsurface. These challenges may be minimized if steel-cased wells are used as long electrodes. We demonstrate a method of using long electrodes in a complex nuclear waste facility to monitor a simulated leak from an underground storage tank. The leak was simulated by injecting high conductivity fluid in a perforated well and the resistivity measurements were made before and after the leak test. The data were processed in four dimensions, where a regularization procedure was applied in both the time and space domains. The results showed a lowered resistivity feature develop south of the injection site. The time lapsed regularization parameter had a strong influence on the differences in inverted resistivity between the pre and post datasets, potentially making calibration of the results to specific hydrogeologic parameters difficult.},
doi = {},
journal = {(PRE-PUBLICATION) AMERICAN GEOPHYSICAL UNION IN GEOPHYSICAL RESEARCH LETTERS AND PRESENTED AT AMERICAN GEOPHYSICAL UNION WASHINGTON DC},
number = ,
volume = ,
place = {United States},
year = {2009},
month = {11}
}