Tephra inversion with Tephra2 and the Metropolis-Hastings algorithm

21 Jun 2020 | Contributor(s): Qingyuan Yang, E Bruce Pitman, Marcus I Bursik, Susanna Jenkins

We couple the Metropolis-Hastings algorithm (Hastings, 1970) with the volcanic ash transport model Tephra2 (Bonadonna et al, 2005; 2010), and present the coupled algorithm as a new method to estimate the Eruption Source Parameters (ESPs) of volcanic eruptions based on mass per unit area...

Workshop on the Impacts associated with the primary fallout of volcanic ash and subsequent aeolian remobilisation, Consensual Document

19 May 2020 | Publications | Contributor(s): Lucia Dominguez, Costanza Bonadonna, Donaldo Bran

The inherent complexity associated with volcanic eruptions and their relationship with societies requires innovative strategies about how we assess and manage risk. The 2011 Cordón Caulle eruption (2011-CC) demonstrated the additional complexity associated with secondary hazards and...

Workshop on Wind-remobilisation processes of volcanic ash, Consensual Document

20 Feb 2020 | Publications | Contributor(s): Costanza Bonadonna, Paul A Jarvis, Lucia Dominguez, Corine Frischknecht, Pablo Forte, Donaldo Bran, Rigoberto Aguilar, Frances Beckett, Manuela Elissondo, Jack Gillies, ulrich kueppers, Jonathan Merrison, Nick Varley, Kristi L Wallace

Explosive volcanic eruptions can eject large quantities of tephra into the atmosphere that can be dispersed and deposited over wide areas. Whilst the hazardous consequences of primary tephra fallout are well known, subsequent remobilisation of ash by aeolian processes can continue to present an...

1st IAVCEI/GVM Workshop: "From Volcanic Hazard to Risk Assessment", Geneva, 27-29 June 2018

18 Dec 2018 | Workshops | Contributor(s): Costanza Bonadonna, Sebastien Biass, Eliza S Calder, Corine Frischknecht, Chris Eric Gregg, Susanna Jenkins, Sue C Loughlin, Scira Menoni, Shinji Takarada, Tom Wilson

The complexity of volcanic risk analysis typically resides in the interaction of multiple hazard, vulnerability and exposure aspects dynamically acting over various spatial and temporal scales. Risk analyses provide an evidence-based approach to development and implementation of proactive...

Intra-Conference Field Trip - Natural Park of La Garrotxa volcanic field: magmatic vs phreatomagmatic activity. The role of the basement to control the eruptive dynamics

29 May 2018 | Publications | Contributor(s): Joan Martí, Xavier Bolós, Llorenç Planagumà

Pre-Conference Field Trip - Monogenetic volcanism of the Catalan Volcanic Zone: Maar craters, scoria cones and rootless volcanoes of the Garrotxa volcanic field, and open fossil excavation in a Pliocene maar crater.

29 May 2018 | Publications | Contributor(s): Xavier Bolós¹, Joan Marti, Oriol Oms, Gerard Campeny, Bruno Gómez de Soler

Abstract Volume of the 7th International Maar Conference

29 May 2018 | Publications | Contributor(s): Xavier Bolós, Joan Martí

A new method to identify the vent location of tephra fall deposits based on thickness or maximum clast size measurements (SVL)

17 Apr 2018 | Offline Tools | Contributor(s): Qingyuan Yang, Marcus I Bursik, E Bruce Pitman

This tool presents a new method to identify the vent location of tephra fall deposits based on thickness or maximum clast size measurements. It is temporarily named "svl", which is short for Source Vent Locator. The method estimates the vent location by coupling semi-empirical models...

INQUA–INTAV International Field Conference and Workshop: Crossing New Frontiers

14 Mar 2018 | Workshops | Contributor(s): Marcus I Bursik

The INQUA International Focus Group on Tephrochronology and Volcanism (INTAV) cordially invites you to participate in the Crossing New Frontiers - Tephra Hunt in Transylvania international field conference that aims to continue the long tradition of very successful inter-INQUA congress tephra...

Mono-Inyo Tephra Database

01 Aug 2017 | *Data Sets/Collections | Contributor(s): Marcus I Bursik

The Mono-Inyo Craters is a zone of active volcanism in California, USA, that extends from Mammoth Mountain and Long Valley caldera in the south to the islands of Mono Lake in the north.  This resource provides the citation for the Mono-Inyo tephra database.  The database can...

2017 AGU Fall Meeting Session - V036: Volcanic Ash—Generation, Transport, Impacts, and Applications

20 Jun 2017 | Miscellaneous | Contributor(s): Peter W Webley

Dear all,We invite you to submit an abstract to our session and look forward to you joining us at AGU 2017 in New Orleans, December 11 - 15, 2017.V036: Volcanic Ash—Generation, Transport, Impacts, and ApplicationSession ID#:...

Tephra 2017 Workshop : Best practices in tephra collection, analysis, and reporting leading toward better tephra databases

15 Jun 2017 | Workshops | Contributor(s): Marcus I Bursik, Stephen C Kuehn, Kristi L Wallace, Andrei V Kurbatov

Best practices in tephra collection, analysis, and reporting: Leading toward better tephra databasesThis is a page for the Tephra 2017 workshop, held in Portland, OR, 19 August 2017.  The workshop was a follow-on to the Tephra 2014 workshop, held 3-7 August 2014, also in...

La erupción del volcán Calbuco en 2015: Volcanología, sociedad y ecosistemas

25 Apr 2017 | Publications | Contributor(s): Jorge E. Romero

La erupción del 22-23 de abril de 2015 del Volcán Calbuco tuvo impactos en las actividades sociales y ecosistemas en el sur de Chile y en Argentina, debido a la espesa caída de piroclastos, corrientes calientes de gases y rocas, además de flujos de lodo...

TephraProb: a Matlab package for probabilistic hazard assessments of tephra fallout

15 Sep 2016 | Offline Tools | Contributor(s): Sebastien Biass, Costanza Bonadonna, Laura J Connor, Chuck B Connor

Download the code on GitHub: https://github.com/e5k/TephraProbFollow updates on: https://e5k.github.io/TephraProb is a toolbox of Matlab functions designed to produce scenario–based probabilistic hazard assessments for ground tephra accumulation. The toolbox includes a series of...

Abstract Book "Geological fieldwork in volcanic areas: mapping techiques and applications"; IAVCEI Commission on Volcano Geology - 3rd International Workshop, Etna-Aeolian Islands [July 3-10, 2016]; pp. 77.

30 Aug 2016 | Workshops | Contributor(s): Karoly Nemeth

Collection of abstracts presented during the IAVCEI Volcanic Geology workshop in Italy in July 2016 [pdf file]

Maar-diatremes - a course module

13 Jun 2016 | Educational Materials | Contributor(s): Greg A Valentine, Alison Graettinger

Maar-diatremes are one of the most common volcanic landforms on Earth, and represent an end-member type of volcano whose eruptions are dominated by explosive, subsurface magma-water interaction.  Thus they should form an important component of volcanology courses.  The recent decade has...

Tephra isopach, extent and volume calculation in R

04 Mar 2016 | Offline Tools | Contributor(s): Qingyuan Yang, Marcus I Bursik

The method presented here is used to interpolate the thickness distribution of tephra fall deposits from point measurements. It first reconstructs the general thickness decay pattern, or "trend," and then models the residuals that cannot be explained by the trend with...

A Matlab implementation of the Carey and Sparks (1986) model

04 Nov 2015 | Offline Tools | Contributor(s): Sebastien Biass, Gholamohssein Bagheri, Costanza Bonadonna

Download the code on GitHub: https://github.com/e5k/CareySparks86_MatlabFollow updates on: https://e5k.github.io/   This file is a Matlab implementation of the Carey and Sparks (1986) model to estimate i) the plume height above sampling altitude and ii) the wind speed at the...