Tephra inversion with Tephra2 and the Metropolis-Hastings algorithm
25 Jan 2022
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...
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...
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...
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...
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...
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...
Maar-diatremes - a course module
25 Jan 2022
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
25 Jan 2022
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
25 Jan 2022
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...
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 2019 Workshops on standardization.The immediate goal of the tephra standardization effort is to translate checklists...
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...
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.
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...
Tephra 2014 - Maximizing the potential of tephra for multidisciplinary science
25 Jan 2022
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;...
25 Jan 2022 | Tools
puffin = a tool to run the volcanic ash dispersal model -- puff -- based on the plume trajectory model -- bent.
Tephra in Quaternary Science 2011 Edinburgh Workshop Report: The Eyjafjallajökull eruptions of 2010
25 Jan 2022 | Publications
Report and Community Statement from the workshop on the Eyjafjallajokull eruptions of 2010 and implications for tephrochronology, volcanology and Quaternary studies, Institute of Geography, University of Edinburgh, 5th‐6th May 2011. The first meeting of Tephra in Quaternary Science (TIQS), the...
GeoProMT v1.0 - Geospatial Project Management Tool
25 Jan 2022 | Data Sets/Collections
The Geospatial Project Management Tool (GeoProMT) is a web-based tool for management of shared geo-spatial and multi-temporal data such as GIS data and remotely sensed images. Integral to the GeoProMT framework is role-based access control (RBAC), where data access permissions and data users are...
Tephra2: Student Version
25 Jan 2022 | Tools
The Tephra2 ash dispersion model run via a GUI designed for student use.
Natural Hazards Tephra Fallout Lab
25 Jan 2022 | Educational Materials
This lab walks students through using the tephra2 education graphical user interface (gui) to investigate tephra fallout at Colima volcano. By the end of this lab, students should be able to:•understand that every volcanic event is different and so produces a unique deposit•convert from units of...
Tephra2 Source Code
14 Jul 2010 | Offline Tools
Tephra2 uses the advection diffusion equation to forecast tephra dispersion in a given location based on a user-defined set of eruptive conditions.Tephra2 codes are now maintained on GitHub: https://github.com/geoscience-community-codes/tephra2 Available are:1-processor...