Special issue: The 2000 eruption of Miyakejima volcano, Japan

Nakada, Setsuya

doi:10.1007/s00445-004-0403-5

Cited by 6 publications

(2 citation statements)

References 7 publications

(14 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A submarine eruption occurred off the coast of Miyake-jima Volcano, Japan, on June 27, 2000 (Nakada and Druitt, 2005 and papers within this volume) (Figure 8). This eruption was followed by a large offshore dike intrusion and a phreatomagmatic eruption accompanying caldera formation at Miyake-jima's summit in July and August 2000.…”

Section: 1 Km Asl)mentioning

confidence: 99%

Top–Down Precursory Volcanic Seismicity: Implications for ‘Stealth’ Magma Ascent and Long-Term Eruption Forecasting

Roman

Cashman

2018

Front. Earth Sci.

View full text Add to dashboard Cite

Volcanic eruptions occur when a conduit forms to connect a crustal magma reservoir to Earth's surface. Conduit formation is generally assumed to be a 'bottom-up' process and a major driver of precursory volcanic seismicity, which is the most commonly monitored parameter at volcanoes worldwide. If both assumptions are true, initial precursory seismicity should coincide spatially with petrologically-estimated magma reservoir depths. A review of six well-constrained case studies of arc volcanoes that erupt after repose intervals of decades indicates that, to the contrary, initial precursory seismicity is consistently several kilometers shallower than the magma reservoir. We propose a model involving a three-phase process of unrest and eruption: initial (partial) conduit formation occurs during a 'staging' phase, either aseismically or long before the onset of the immediate precursory run-up to eruption. Staging may involve slow ascent rates and/or small volumes. A destabilization phase then coincides with the onset of precursory seismicity, leading to a 'tapping' phase that involves additional magma ascent from the magma reservoir. This model implies that, most critically, it may be possible to detect precursory magma ascent well before the onset of seismic activity by continuous monitoring of the state of stress in the mid to shallow crust.

show abstract

Section: 1 Km Asl)mentioning

confidence: 99%

Top–Down Precursory Volcanic Seismicity: Implications for ‘Stealth’ Magma Ascent and Long-Term Eruption Forecasting

Roman

Cashman

2018

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…From(Nakada, 2005).2 The eruptive history in http://www.volcano.si.edu seems to specify the long period 1999-2011 for the Shiveluch 2001 VEI and extended periods also for the other data flagged by this footnote.3 From http://www.volcanodiscovery.com/sarychev.html; the eruption maximum is reported here for 15 June.4 Radar measurements show a maximum of 9.5 km (9.3 km) at the beginning and more than 8 km several times until early 18 April(Petersen, 2010;Arason et al, 2011).5 From http://en.wikipedia.org/wiki/List of large volcanic eruptions in the 21st century.Atmos. Chem.Phys., 13, 5205-5225, 2013www.atmos-chem-phys.net/13/5205/2013/T.…”

mentioning

confidence: 99%

35 years of stratospheric aerosol measurements at Garmisch-Partenkirchen: from Fuego to Eyjafjallajökull, and beyond

Trickl¹,

Giehl²,

Jäger³

et al. 2012

Preprint

View full text Add to dashboard Cite

The powerful backscatter lidar at Garmisch-Partenkirchen (Germany) has almost continually delivered backscatter coefficients of the stratospheric aerosol since 1976. The time series is dominated by signals from the particles injected into or formed in the stratosphere due to major volcanic eruptions, in particular those of El Chichon (Mexico, 1982) and Mt. Pinatubo (Philippines, 1991). The volcanic aerosol disappears within about five years, the removal from the stratosphere being modulated by the phase of the quasi-biennial oscillation. Here, we focus more on the long-lasting background period since the late 1990s and 2006, in view of processes maintaining a residual lower-stratospheric aerosol layer in absence of major eruptions, as well as the period of moderate volcanic impact afterwards. During the long background period the stratospheric backscatter coefficients reached a level even below that observed in the late 1970s. This suggests that the predicted potential influence of the strongly growing air traffic on the stratospheric aerosol loading is very low. Some correlation may be found with single strong forest-fire events, but the average influence of biomass burning seems to be quite limited. No positive trend in background aerosol can be resolved over a period as long as that observed by lidar at Mauna Loa or Boulder. This suggests being careful with invoking Asian air pollution as the main source as found in the literature. Rather an impact of previously missed volcanic eruptions on the stratospheric aerosol must be taken into consideration. A key observation in this regard was that of the plume from the Icelandic volcano Eyjafjallajökull above Garmisch-Partenkirchen (April 2010) due to the proximity of that source. The top altitude of the ash next to the source was reported just as roughly 9.3 km, but the lidar measurements revealed enhanced stratospheric aerosol up to 14.5 km. Our analysis suggests for two, perhaps three, of the four measurement days the presence of a stratospheric contribution from Iceland related to quasi-horizontal transport, contrasting the strongly descending lower layers entering Central Europe. The backscatter coefficients within the first 2 km above the tropopause exceed the stratospheric background by a factor of three to four. In addition, Asian and Saharan dust layers were identified in the free troposphere, Asian dust most likely even in the stratosphere. The number of minor mid-latitude eruptions has gradually increased during the past ten years. We conclude that, although their stratospheric contribution could not be clearly identified above our site they can sum up for forming some minor background. Clear stratospheric signatures were only seen in the case of eruptions reaching higher altitudes

show abstract

Volcano-tectonic earthquakes: A new tool for estimating intrusive volumes and forecasting eruptions

White

McCausland

2016

Journal of Volcanology and Geothermal Research

186

172

View full text Add to dashboard Cite

Additional cases are recognized at frequently active volcanoes including Popocateptl (2001) and Mauna Loa (1984. We present four case studies (Pinatubo, Soufriere Hills, Unzen, and Tacana') in which we demonstrate the above mentioned VT characteristics prior to eruptions. Using regional data recorded by NEIC, we recognized in near-real time that a huge distal VT swarm was occurring, deduced that a proportionately huge magmatic intrusion was taking place beneath the long dormant Sulu Range, New Britain Island, Papua New Guinea, that it was likely to lead to eruptive activity, and warned Rabaul Volcano Observatory days before a phreatic eruption occurred. This confirms the value of this technique for eruption forecasting. We also present a counter-example where we deduced that a VT swarm at Volcan Cosiguina, Nicaragua, indicated a small intrusion, insufficient to reach the surface and erupt. Finally, we discuss limitations of the method and propose a mechanism by which this distal VT seismicity is triggered by magmatic intrusion.

show abstract

Special issue: The 2000 eruption of Miyakejima volcano, Japan

Cited by 6 publications

References 7 publications

Top–Down Precursory Volcanic Seismicity: Implications for ‘Stealth’ Magma Ascent and Long-Term Eruption Forecasting

Top–Down Precursory Volcanic Seismicity: Implications for ‘Stealth’ Magma Ascent and Long-Term Eruption Forecasting

35 years of stratospheric aerosol measurements at Garmisch-Partenkirchen: from Fuego to Eyjafjallajökull, and beyond

Volcano-tectonic earthquakes: A new tool for estimating intrusive volumes and forecasting eruptions

Contact Info

Product

Resources

About