Instrumentation recommendations for volcano monitoring at U.S. volcanoes under the national volcano early warning system

Moran, S. C.; Freymueller, Jeff; LaHusen, Richard G.; McGee, K. A.; Poland, Michael P.; Power, John A.; Schmidt, D. A.; Schneider, D. J.; Stephens, George; Werner, C. A.; White, Randall A.

doi:10.3133/sir20085114

Cited by 43 publications

(37 citation statements)

References 123 publications

(43 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This threshold approach is modeled on the gradational monitoring levels established by Moran et al . []. We exclude submarine volcanoes that would otherwise fit these criteria, since their eruptive histories and geochemical compositions are unknown.…”

Section: Characterizing Volcano Seismicity In the Aleutian Arccontrasting

confidence: 63%

Regional controls on volcano seismicity along the Aleutian arc

Buurman

Nye

West

et al. 2014

Geochem. Geophys. Geosyst.

View full text Add to dashboard Cite

We identify patterns in volcano seismicity along the Aleutian arc using nearly 10 years of seismic data recorded at 46 volcanoes. The volcanoes in the central portion of the arc-those located from Aniakchak to Okmok-are associated with significantly more seismicity at depths below 15 km. We also examine the median weight percent SiO 2 compositions of the seismically monitored volcanoes by compiling published geochemical data. We find that the transition between felsic volcanism in the east to more mafic volcanism in the west occurs in the same region where the depth distribution of volcanic earthquakes changes. Since deep volcanic earthquakes are often thought to be generated by the ascent of magma through the deep crust (i.e., depths > 15 km), our results suggest that magma ascent is more prolific in the central part of the arc compared to the western and eastern regions. This observation is in agreement with the location of the largest and most historically active volcanoes in the Aleutian arc, which are found in same region that generates abundant deep volcano seismicity. We propose two models to explain these apparent variations in magmatic flux: (1) a stress-based model, in which subduction obliquity and the collision of the Yakutat block affect the stress regime in the upper plate, inhibiting the rise of magma in eastern and western regions of the arc and (2) a melt-based model, where more magma is generated in the central region of the arc through increased H 2 O in the downgoing slab via water-laden sediments and subducting fracture zones.

show abstract

Section: Characterizing Volcano Seismicity In the Aleutian Arccontrasting

confidence: 63%

Regional controls on volcano seismicity along the Aleutian arc

Buurman

Nye

West

et al. 2014

Geochem. Geophys. Geosyst.

View full text Add to dashboard Cite

show abstract

“…Threat scores allow volcanoes to be ranked against each other and thus enable recommendations for varying levels of monitoring (Ewert et al 2005;Moran et al 2008). Monitoring efforts are therefore focused on the volcanoes most likely to generate significant risk.…”

Section: Assessing the Threatmentioning

confidence: 99%

Volcano Crisis Communication: Challenges and Solutions in the 21st Century

Fearnley

Winson

Pallister

et al. 2017

Advances in Volcanology

View full text Add to dashboard Cite

This volume, Observing the volcano world: volcanic crisis communication, focuses at the point where the 'rubber hits the road', where the world of volcano-related sciences and all its uncertainties meet with the complex and ever-changing dynamics of our society, wherever and whenever this may be. Core to the issues addressed in this book is the idea of how volcanic crisis communication operates in practice and in theory. This chapter provides an overview of the evolution of thinking around the importance of volcanic crisis communication over the last century, bringing together studies on relevant case studies. Frequently, the mechanisms by which volcanic crisis communication occurs are via a number of key tools employed including: risk assessment, probabilistic analysis, early-warning systems, all of which assist in the decision-making procedures; that are compounded by ever-changing societal demands and needs. This chapter outlines some of the key challenges faced in managing responses to volcanic eruptions since the start of the 20th century, to explore what has been effective, what lessons have been learnt from key events, and what solutions we can discover. Adopting a holistic approach, this chapter aims to provide a contextual background for the following chapters in the volume that explore many of the elements discussed here in further detail. Finally, we consider the future, as many chapters in this book bring together a wealth of new knowledge that will enable further insights for investigation, experimentation, and development of future volcanic crisis communication.

show abstract

“…A complete description of instruments and techniques used by the USGS to monitor volcanoes may be found in the work by Moran et al (2008). It is generally accepted that the reactivation of a volcano usually involves a progressive appearance of certain unrest signals or precursors.…”

Section: Volcano Monitoringmentioning

confidence: 99%