Please use this identifier to cite or link to this item:
Authors: Petrosino, S.* 
Cusano, P.* 
La Rocca, M.* 
Galluzzo, D.* 
Orozco-Rojas, J.* 
Breton, M.* 
Ibanez, J.* 
Del Pezzo, E.* 
Title: Source location of long period seismicity at Volcàn de Colima, México
Journal: Bulletin of Volcanology 
Series/Report no.: 7/73 (2011)
Publisher: Springer
Issue Date: 10-Feb-2011
DOI: 10.1007/s00445-011-0447-2
Keywords: Colima Volcano
Long Period Events
Earthquake location
Subject Classification04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology 
Abstract: This paper presents an analysis of seismicity associated with the volcanic activity of Volcàn de Colima (México) and recorded in the period November 2005–April 2006 during a field survey by the Istituto Nazionale di Geofisica e Vulcanologia (INGV)–Osservatorio Vesuviano, the Observatorio Vulcanologico de Colima of Colima University and the Instituto Andaluz de Geofisica, University of Granada. Three different types of volcanic earthquakes have been identified on the basis of their spectral properties: Type A (0.3–1 Hz), Type B (1–5 Hz) and Type C (3–4 Hz). Results of polarization analysis applied to Type A events show a predominance of radial motion, indicating that the wavefield comprises compressional waves (P) and shear waves polarized in the vertical plane (SV), while the signal always begins with a negative polarity. Type A, B and C earthquakes have been located using both a flat layered model and a 3D model including topography. Hypocentre distributions indicate that the source of Type A signals is very shallow and confined to a small volume lying about 1 km below the crater. In contrast, the source of Type B and C events is significantly deeper, with most hypocentres located in a volume of about 1 km3 centred at 2.5–3 km depth. A cluster analysis based on the crosscorrelation among the waveforms of different events recorded at the same station was applied to Type A earthquakes. Only two clusters, which include only a small percentage of events were found, indicating that earthquake families were uncommon during the period of our survey.
Appears in Collections:Article published / in press

Files in This Item:
File Description SizeFormat Existing users please Login
BullVol.pdfMain article940.27 kBAdobe PDF
Show full item record


checked on Feb 10, 2021

Page view(s) 20

checked on Feb 2, 2023


checked on Feb 2, 2023

Google ScholarTM