Moment tensor inversion of explosive long period events recorded on Arenal volcano, Costa Rica, constrained by synthetic tests
نویسندگان
چکیده
منابع مشابه
Steady downslope movement on the western flank of Arenal volcano, Costa Rica
[1] The edifice of a volcano is a unique deformational environment, dependent not just on active volcanic processes but also on its composition, structure, and morphology. We measured the deformation of Volcán Arenal, Costa Rica, using interferograms constructed from both ALOS and RadarSat data between 2005 and 2009. The volcano’s western flanks are moving downslope at an angle of ∼55° below th...
متن کاملMonitoring change in volcanic interiors using coda wave interferometry: Application to Arenal Volcano, Costa Rica
[1] Multiply scattered waves are a new tool for monitoring changes in the earth’s subsurface. In this study we use the air pressure and displacement recorded at the Arenal Volcano to detect temporal changes. The pressure pulses emitted by the volcano are associated with a complex displacement signal of overlapping coda waves. By deconvolving the ground motion with the air pressure for different...
متن کاملNew Constraints on Source Processes of Volcanic Tremor at Arenal Volcano, Costa Rica, Using Broadband Seismic Data
Broadband seismic data recorded 2.3 km from the active vent of Arenal Volcano, Costa Rica, provide new constraints on tremor source processes. Arenal's tremor contains as many as seven harmonics, whose frequencies vary temporally by up to 75 percent, from initial values of 1.9 Hz for the first peak immediately following explosive eruptions to 3.2-3.5 Hz several minutes later. We infer that gas ...
متن کاملIdentifying Isotropic Events Using a Regional Moment Tensor Inversion
The deviatoric and isotropic source components for 17 explosions at the Nevada Test Site, as well as 12 earthquakes and 3 collapses in the surrounding region of the western US, are calculated using a regional time-domain full waveform inversion for the complete moment tensor. The events separate into specific populations according to their deviation from a pure double-couple and ratio of isotro...
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ژورنال
عنوان ژورنال: Journal of Volcanology and Geothermal Research
سال: 2010
ISSN: 0377-0273
DOI: 10.1016/j.jvolgeores.2010.05.012