TY - RPRT TI - Acoustic measurements of the 1999 basaltic eruption of Shishaldin volcano, Alaska 2. Precursor to the Subplinian phase AU - S. Vergniolle AU - J. Caplan-Auerbach PY - 2004 DO - 10.1016/j.jvolgeores.2004.05.004 UR - https://pubs.usgs.gov/publication/70026662 ID - 70026662 ER -