Impacts of Tectonic Earthquakes in the Western Rift Valley of Africa on the Volcanic Activity of Nyiragongo, Virunga Region

2011 ◽  
Vol 4 (3) ◽  
pp. 209-223 ◽  
Author(s):  
D.M. Wafula
Keyword(s):  
Volcanic Activity ◽  
Rift Valley ◽  
Tectonic Earthquakes

scholarly journals Methods for Eruption Prediction and Hazard Evaluation at Indonesian Volcanoes

2012 ◽  
Vol 7 (1) ◽  
pp. 26-36 ◽  
Author(s):  
Masato Iguchi ◽  
◽  
Surono ◽  
Takeshi Nishimura ◽  
Muhamad Hendrasto ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Hazard Evaluation ◽  
Seismic Amplitude ◽  
Geological Surveys ◽  
Cumulative Volume ◽  
Background Data ◽  
Tectonic Earthquakes ◽  
Gps Observation ◽  
Continuous Gps ◽  
Eruptive Rate

We report methods, based on geophysical observations and geological surveys, for the prediction of eruptions and the evaluation of the activity of 4 volcanoes in Indonesia. These are Semeru, Guntur, Kelud and Sinabung volcanoes. Minor increases in tilt were detected by borehole tiltmeters prior to eruptions at the Semeru volcano depending on the seismic amplitude of explosion earthquakes. The results show the possibility of prediction of the type and magnitude of eruption and the effectiveness of observation with a high signalto-noise ratio. The establishment of background data is important for evaluating volcanic activity in longterm prediction. Typical distributions of volcanic and local tectonic earthquakes were obtained around the Guntur volcano, where geodetic monitoring by continuous GPS observation is valuable. The cumulative volume of eruptive products is valuable for evaluating the potential for future eruption. The eruptive rate of the Kelud volcano is ca 2×106m3/y (dense rock equivalent), but the volume of the 2007 eruption was only 2×107m3, suggesting a still high potential for eruption. Based on geological surveys and dating, an eruption scenario is proposed for the activity of Mt. Sinabung, where phreatic eruptions occurred in 2010 after a historically long dormancy.

scholarly journals A review framework of how earthquakes trigger volcanic eruptions

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Gilles Seropian ◽  
Ben M. Kennedy ◽  
Thomas R. Walter ◽  
Mie Ichihara ◽  
Arthur D. Jolly
Keyword(s):  
Volcanic Activity ◽  
Closed System ◽  
Current Knowledge ◽  
Volcanic Eruptions ◽  
Hydrothermal Systems ◽  
Earthquake Triggering ◽  
Tectonic Earthquakes ◽  
Underlying Mechanisms ◽  
Review Current ◽  
Magma Viscosity

AbstractIt is generally accepted that tectonic earthquakes may trigger volcanic activity, although the underlying mechanisms are poorly constrained. Here, we review current knowledge, and introduce a novel framework to help characterize earthquake-triggering processes. This framework outlines three parameters observable at volcanoes, namely magma viscosity, open- or closed-system degassing and the presence or absence of an active hydrothermal system. Our classification illustrates that most types of volcanoes may be seismically-triggered, though require different combinations of volcanic and seismic conditions, and triggering is unlikely unless the system is primed for eruption. Seismically-triggered unrest is more common, and particularly associated with hydrothermal systems.

Dynamical parameter analysis of continuous seismic signals of Popocatépetl volcano (Central Mexico): A case of tectonic earthquakes influencing volcanic activity

2012 ◽  
Vol 60 (3) ◽  
pp. 664-681 ◽  
Author(s):  
Marta Tárraga ◽  
Servando De La Cruz-Reyna ◽  
Ana T. Mendoza-Rosas ◽  
Roberto Carniel ◽  
Alicia Martínez-Bringas ◽  
...  
Keyword(s):  
Volcanic Activity ◽  
Parameter Analysis ◽  
Central Mexico ◽  
Seismic Signals ◽  
Dynamical Parameter ◽  
Popocatépetl Volcano ◽  
Tectonic Earthquakes ◽  
Popocatepetl Volcano
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