Seismic activity related to the 1991 eruption of Colima Volcano, Mexico

Núñez-Cornũ, F. J.; Nava, F. Alejandro; Cruz‐Reyna, Servando De la; Jiménez, Z.; Valencia, Carmen Berzosa; Garcı́a-Arthur, Rosalı́a

doi:10.1007/bf00279608

Cited by 46 publications

(17 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This marked the first time that significant and evolving seismic activity was detected prior to and during one of Colima's eruptions. The seismic activity and its correlation with eruptive events during the 1991 episode was described by Núñ ez-Cornú et al (1994a).…”

Section: Introductionmentioning

confidence: 99%

Stress Field Estimations for Colima Volcano, Mexico, Based on Seismic Data

Núñez-Cornũ¹,

Sánchez-Mora²

1999

Bulletin of Volcanology

View full text Add to dashboard Cite

For first time, during 1991, seismic activity was recorded during an eruption at Colima volcano. We analyze these data to obtain a stress pattern using a composite focal mechanism technique. From the analysis of regional seismicity, the Tamazula Fault and the Armeria River appear as active features and the dip of the slab east of the Jalisco Block is approximately 127. Southwest of Colima volcano a vertical alignment of seismic events was observed. We estimate five different composite focal mechanism solutions from our data set, which indicate a change of the stress field at the volcano after the 1991 eruption. These solutions suggest that the stress field in the volcanic edifice was controlled by stresses related to the emplacement of magma superimposed on the regional stress field. No evidence of active local faults in the volcanic edifice was found. We propose a model for the eruptive process that involves tilting of the volcanic edifice.

show abstract

Section: Introductionmentioning

confidence: 99%

Stress Field Estimations for Colima Volcano, Mexico, Based on Seismic Data

Núñez-Cornũ¹,

Sánchez-Mora²

1999

Bulletin of Volcanology

View full text Add to dashboard Cite

show abstract

“…Lava started to slowly fill that crater, reaching its rim around 1960. A succession of dome growth and destruction events in the summit crater followed during the last three decades, causing volcanic earthquake swarms, explosions and block-and-ash flows (Rodríguez-Elizarrarás et al, 1991;Núñez-Cornú et al, 1994;Saucedo et al, 2002;Bretón et al, 2002;Luhr et al, 2010;Saucedo et al, 2010). Unlike Popocatépetl, its high eruption rate has prevented large settlements around the volcano.…”

Section: Popocatépetl and Colima Volcanoesmentioning

confidence: 99%

A simple semi-empirical approach to model thickness of ash-deposits for different eruption scenarios

González-Mellado¹,

Cruz‐Reyna²

2010

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The impact of ash-fall on people, buildings, crops, water resources, and infrastructure depends on several factors such as the thickness of the deposits, grain size distribution and others. Preparedness against tephra falls over large regions around an active volcano requires an understanding of all processes controlling those factors, and a working model capable of predicting at least some of them. However, the complexity of tephra dispersion and sedimentation makes the search of an integral solution an almost unapproachable problem in the absence of highly efficient computing facilities due to the large number of equations and unknown parameters that control the process. An alternative attempt is made here to address the problem of modeling the thickness of ash deposits as a primary impact factor that can be easily communicated to the public and decision-makers. We develop a semi-empirical inversion model to estimate the thickness of non-compacted deposits produced by an explosive eruption around a volcano in the distance range 4-150 km from the eruptive source.

show abstract

“…Only later, when the discharge exceeded the chimney's system capability to drain, VT events were more produced. It is worth mentioning that the foci of the events associated with the activities of 1991 (NÚ Ñ EZ-CORNÚ et al, 1994(JIME´NEZ et al, 1995 were located mostly in about the same region. Previous studies of seismicity by Nu´n˜EZ-CORNU´and SA´NCHEZ-MORA (1999) and DOMINGUEZ et al (2001) and the gravity interpretation of MEDINA et al (1996) suggest that this is the chimney region; that is, the volume where active dike propagation takes place in response to overpressure in the chamber.…”

Section: Pattern Of Vt and Lp Seismicitymentioning

confidence: 99%

“…Such deployment has had a positive social impact, since seismic monitoring has been the essential tool for volcano surveillance in an area of substantial population growth. It also has been important from a volcanological point of view as most of the characteristics of the seismicity related to the eruptive episodes occurring since 1989 stem from the analyses of the signals recorded by the network (NÚ Ñ EZ-CORNÚ et al, 1994;JIME´NEZ et al, 1995;ZOBIN et al, 2002a). To count with such information is essential to achieve an understanding of eruptive processes in andesitic volcanoes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The 1997–1998 Activity of Volcán de Colima, Western Mexico: Some Aspects of the Associated Seismic Activity

Zamora-Camacho¹,

Espíndola²,

Reyes‐Dávila

2007

Pure appl. geophys.

View full text Add to dashboard Cite

Volca´n de Colima, the most active volcano in Mexico, had a climactic episode on 20 November, 1998. On this date, a dome formed on the small summit crater during the previous few days, collapsed generating block-and-ash flows. The event was preceded by almost twelve months of seismic activity, which continued afterwards for several more months. We analyzed the main seismic activity, which occurred from 20 March, 1998 to 31 March, 1999. The seismicity was dominated by volcanotectonic earthquakes before the climax, and subsequently by hybrid and long-period earthquakes. We determined the frequency of events for the entire period, and located most of the volcano-tectonic events.To assess the possibility that these earthquakes were generated by the same source, they were tested for their similitude through cross correlation in the time domain. Six groups of similar events, or earthquake families, were generated. The members of these families appeared before the 20 November event, apparently ceasing afterwards. We examined the location of the families' events with respect to an existing gravity model in which an anomalous body of negative density contrast suggests the presence of the magma chamber. Most of the family events occur on top of the anomalous body, which suggests they were associated with the passage of magma through the feeding conduits of the volcano.

show abstract

Seismic activity related to the 1991 eruption of Colima Volcano, Mexico

Cited by 46 publications

References 15 publications

Stress Field Estimations for Colima Volcano, Mexico, Based on Seismic Data

Stress Field Estimations for Colima Volcano, Mexico, Based on Seismic Data

A simple semi-empirical approach to model thickness of ash-deposits for different eruption scenarios

The 1997–1998 Activity of Volcán de Colima, Western Mexico: Some Aspects of the Associated Seismic Activity

Contact Info

Product

Resources

About