Premium
Reawakening of Mauna Loa Volcano, Hawaii: A preliminary evaluation of seismic evidence
Author(s) -
Koyanagi Robert Y.,
Endo Elliot T.,
Ebisu Jennifer S.
Publication year - 1975
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl002i009p00405
Subject(s) - induced seismicity , geology , volcano , summit , seismology , physical geography , geography
Following many years of few earthquakes, the seismicity of Mauna Loa increased markedly in 1974. Well determined foci of 171 earthquakes with magnitudes between 1.5 and 4.6 in 1974, as well as the locations of other earthquakes from 1962 to 1973, outline a broad seismic zone around the summit. Most earthquakes are at depths less than 15 km; some are as deep as 50 km. The significant increase in seismicity, combined with expansion measured at the summit, suggest that Mauna Loa may be reawakening after nearly 25 years of quiescence.