Three distinct regimes of volcanic tremor associated with the eruption of Shishaldin Volcano, Alaska 1999 (original) (raw)
2002, Bulletin of Volcanology
Sign up for access to the world's latest research.
checkGet notified about relevant papers
checkSave papers to use in your research
checkJoin the discussion with peers
checkTrack your impact
Related papers
The 1992 eruptions of Crater Peak vent, Mount Spurr Volcano, Alaska
1995
effects it deposited 3 mm of ash on Anchorage, 125 km east of the volcano. Proximal pyroclastic flows accompanied the August and September eruptions. In all erups rac -tions, lahars and debris flows descended Crater Peak's . , . , , south flank, and some reached the Chakachatna River.
Observations of volcanic tremor during the January–February 2005 eruption of Mt. Veniaminof, Alaska
Bulletin of volcanology, 2007
Mt. Veniaminof, Alaska Peninsula, is a strato-volcano with a summit ice-filled caldera containing a small intracaldera cone and active vent. From January 2 to February 21, 2005, Mt. Veniaminof erupted. The eruption was characterized by numerous small ash emissions (VEI 0 to 1) and accompanied by low-frequency earthquake activity and volcanic tremor. We have performed spectral analyses of the seismic signals in order to characterize them and to constrain their source. Continuous tremor has durations of minutes to hours with dominant energy in the band 0.5-4.0 Hz, and spectra characterized by narrow peaks either irregularly (non-harmonic tremor) or regularly spaced (harmonic tremor). The spectra of non-harmonic tremor resemble those of low-frequency events recorded simoultaneously to surface ash explosions, suggesting that the source mechanisms might be similar or related. We propose that non-harmonic tremor at Mt. Veniaminof results from the coalescence of gas bubbles and low-frequency events are related to the disruption of large gas pockets within the conduit.
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.