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  1. Tephra inversion with Tephra2 and the Metropolis-Hastings algorithm

    04 Jul 2020

    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...

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

    04 Jul 2020 | Publications

    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...

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

    04 Jul 2020 | Publications

    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...

  4. 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

    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...

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

    14 Mar 2018 | Workshops

    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...

  6. Mono-Inyo Tephra Database

    01 Aug 2017 | Data Sets/Collections

    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...

  7. 2017 AGU Fall Meeting Session - V036: Volcanic Ash—Generation, Transport, Impacts, and Applications

    20 Jun 2017 | Miscellaneous

    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#:...

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

    15 Jun 2017 | Workshops

    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...

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

    15 Sep 2016 | Offline Tools

    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...

  10. Documentation for "Effect of particle entrainment on the runout of pyroclastic density currents"

    08 Sep 2016 | Data Sets/Collections

    This is a repository for the data and script used in, "Effect of particle entrainment on the runout of pyroclastic density currents."Here you will find:1. A compilation of splash function experimental data from this study and data that was extracted from seven other studies:...

  11. Maar-diatremes - a course module

    04 Jul 2020 | Educational Materials

    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...

  12. Tephra isopach, extent and volume calculation in R

    04 Jul 2020 | Offline Tools

    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...

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

    04 Jul 2020 | Offline Tools

    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...

  14. Tephra 2014-2020 Document Repository

    01 Jul 2015 | Publications

    Beginning with the consensus document (with three appendices) resulting from the Tephra 2014 Workshop, this is the document repository for the Tephra 2014, 2017 and 2019 Workshops on standardization.The immediate goal of the tephra standardization effort is to translate checklists...

  15. Spread sheet to calculate tephra volume for exponential thinning

    10 Apr 2015 | Offline Tools

    An Excel spread sheet and instructions are provided to calculate tephra volume for exponential thinning on a log(thickness) versus square root of area plot. The spread sheet calculates volumes for a single straight line and for two straight lines. The equations for the calculations are from...

  16. Tephra 2014 Field Trip Guide

    08 Dec 2014 | Publications

    Guidebook for the field trip to Mount Saint Helens conducted 4-August-2014 as part of the Tephra 2014 workshop.

  17. Pyroclastic density currents and local topography as seen with the conveyer model

    15 Apr 2014 | Publications

    Pyroclastic density currents (PDCs) are multiphase flows generated during explosive volcanic eruptions, and they move down the volcano, and over the surrounding topography. The flow-topography interaction can play a fundamental role in the sedimentary processes, and in the resulting deposit...

  18. 2nd IUGG-WMO Workshop on Ash Dispersal Forecast and Civil Aviation, Consensual Document

    18 Feb 2014 | Workshops

    An international expert community of volcano observatories, academic scientists, volcanic ash advisory centres and representatives of aviation regulators, engine manufacturers and airlines met in Geneva on 18-20 November 2013 to discuss progress on ash dispersal forecasting and produce a roadmap...

  19. TOTGS: Total grainsize distribution of tephra fallout

    20 Jan 2014 | Offline Tools

    NOTE The code is now maintained on GitHub: https://github.com/e5k/TOTGS Follow updates on: https://e5k.github.io/  Quantifying the total grainsize distribution (TGSD) is a necessary step to achieve a thorough characterization of a given tephra deposit. Several methods exist to...

  20. Tephra 2014 - Maximizing the potential of tephra for multidisciplinary science

    04 Jul 2020 | Workshops

    Tephra deposits are used by diverse communities: volcanologists, petrologists, tephrochronologists, paleoclimatologists, paleoecologists and archaeologists. To perhaps be too reductionist, volcanologists are generally interested in tephra to understand eruption behavior, frequency, and hazards;...