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

    17 Apr 2018

    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...

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

    14 Mar 2018

    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...

  3. Mono-Inyo Tephra Database

    01 Aug 2017

    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...

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

    15 Jun 2017

    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...

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

    15 Sep 2016

    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...

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

    08 Sep 2016

    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:...

  7. Maar-diatremes - a course module

    12 Dec 2019

    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...

  8. Tephra isopach, extent and volume calculation in R

    12 Dec 2019

    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...

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

    12 Dec 2019

    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...

  10. Tephra 2014-2020 Document Repository

    01 Jul 2015

    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 2020 Workshops on standardization.The immediate goal of the tephra standardization effort is to translate checklists...

  11. Spread sheet to calculate tephra volume for exponential thinning

    10 Apr 2015

    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...

  12. Tephra 2014 Field Trip Guide

    08 Dec 2014

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

  13. Geochemistry and Petrology first response draft

    28 Aug 2014

    Here are the documents which were presented at the meeting on the 27th of August. Please feel free to download, edit, and then update the files stored here.

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

    15 Apr 2014

    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...

  15. TOTGS: Total grainsize distribution of tephra fallout

    20 Jan 2014

    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...

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

    09 Jan 2014

    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;...

  17. Olive

    12 Dec 2019 | Tools

    Olive 2.1.1 a simple fractional crystallization calculator.

  18. Tritone

    12 Dec 2019 | Tools

    Tritone a mini tool to plot ternary diagrams

  19. Norma

    12 Dec 2019 | Tools

    A tool to calculate the Barth-Niggli and CIPW norms from whole-rock chemistry

  20. puffin

    12 Dec 2019 | Tools

    puffin = a tool to run the volcanic ash dispersal model -- puff -- based on the plume trajectory model -- bent.