The Scaling Relationship between Self-Potential and Fluid Flow on Masaya Volcano, Nicaragua
Digital Object Identifier (DOI)
The concurrent measurement of self-potential (SP) and soil CO2 flux (FCO2s) in volcanic sys- tems may be an important tool to monitor intrusive activity and understand interaction between magmatic and groundwater systems. However, quantitative relationships between these parameters must be established to apply them toward understanding processes operating at depth. Power-law scaling exponents calculated for SP and FCO2s measured along a fault on the flanks of Masaya volcano, Nicaragua indicate a nonlinear relationship between these parameters. Scaling exponents suggest that there is a declining increase in SP with a given increase in FCO2s, until a threshold (log FCO2s ≈ 2.5 g m−2d−1) above which SP remains constant with increasing FCO2s. Implications for subsurface processes that may influence SP at Masaya are discussed.
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Citation / Publisher Attribution
The Scaling Relationship between Self-Potential and Fluid Flow on Masaya Volcano, Nicaragua, in R. B. Wanty & R. R. Seal (Eds.), Water-Rock Interaction, Taylor & Francis Group, p. 153-156
Scholar Commons Citation
Lewicki, J. L.; Hilley, G. E.; and Connor, Charles B., "The Scaling Relationship between Self-Potential and Fluid Flow on Masaya Volcano, Nicaragua" (2004). School of Geosciences Faculty and Staff Publications. 1043.