Bulletin of Volcanology

, Volume 52, Issue 2, pp 113-117

First online:

SO2 from episode 48A eruption, Hawaii: Sulfur dioxide emissions from the episode 48A East Rift Zone eruption of Kilauea volcano, Hawaii

  • RJ AndresAffiliated withGeoscience Department, New Mexico Institute of Mining and Technology
  • , PR KyleAffiliated withGeoscience Department, New Mexico Institute of Mining and Technology
  • , JB StokesAffiliated withU. S. Geological Survey, Hawaiian Volcano Observatory
  • , WI RoseAffiliated withDepartment of Geology and Geological Engineering, Michigan Technological University

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An SO2 flux of 1170±400 (1σ) tonnes per day was measured with a correlation spectrometer (COSPEC) in October and November 1986 from the continuous, nonfountaining, basaltic East Rift Zone eruption (episode 48A) of Kilauea volcano. This flux is 5–27 times less than those of highfountaining episodes, 3–5 times greater than those of contemporaneous summit emissions or interphase Pu'u O'o emissions, and 1.3–2 times the emissions from Pu'u O'o alone during 48A. Calculations based on the SO2 emission rate resulted in a magma supply rate of 0.44 million m3 per day and a 0.042 wt% sulfur loss from the magma upon eruption. Both of these calculated parameters agree with determinations made previously by other methods.