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September 5th notes from PWW
05 Sep 2013 | Contributor(s): Peter W Webley
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Sequential fragmentation/transport model applied to Irazu volcano, Costa Rica. Positive dispersion case
21 Mar 2015 | Contributor(s): Jose Brenes
Sequential fragmentation/transport model was applied to ash deposits of 1723 eruption of Irazu volcano, Costa Rica. Some 25% of the sub-populations showed positive dispersion values, which were associated to a new fractal dimension,. With the help of Mandelbrot fractal relationship...
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Shawn's Contribution
24 Feb 2010 | Miscellaneous | Contributor(s): Shawn Rice, Nicholas J. Kisseberth
The contribution process is intended to be much like composing an e-mail: You'll start with writing the introduction and main content of your contribution and later attach files to it (video, PDFs, etc).The abstract is typically a one or two paragraph description of your contribution.
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Short Course - INGEOMINAS, UB, Bristol, UdeNar June 26-July 2, 2010
04 Jul 2010 | Courses | Contributor(s): Christine Lynn Kimball Sumner, Greg A Valentine
In English:This is a collection of presentations from the Short Course on andesite volcanism presented at the June 26 to July 2, 2010 Scientific Meeting on Colombian volcanism at the Observatory of Pasto. The participants were researchers from participating institutions INGEOMINAS, University of...
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Simplifying assumptions in volcano modeling: are we missing something crucial?
14 Mar 2014 | Presentations | Contributor(s): Chiara Paola Montagna, Antonella Longo, Paolo Papale, Gilberto Saccorotti
Volcanoes are extremely complex natural systems, in which the interplay of different forces and physical processes determines a variety of behaviors that can be hard to interpret. The deep magmatic systems cannot be directly observed, and we must rely on indirect information. The latter typically...
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Simulación de Flujos de Lava en el complejo volcanico del Cumbal (Colombia) usando LavaPL
04 Dec 2013 | Presentations | Contributor(s): Carlos José Muñoz Montoya, Ricardo Arturo Mendez Fajury, Paola Andrea Narvaez
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Simulation outputs Montserrat
14 Mar 2012 | *Data Sets/Collections | Contributor(s): Abani Patra
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Size of volcanic ash
08 Feb 2011 | Presentations | Contributor(s): William I Rose
Size of ash particles is discussed--ash, lapilli, fine and very fine ash, phi sizes, lognormal distributions and bimodal ones. Patterns of fallout and grain size distributions.
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Size-distribution of scoria cones within the Eğrikuyu Monogenetic Field (Central Anatolia, Turkey)
26 May 2018 | Publications | Contributor(s): Göksu USLULAR, Gonca Kuşcu, Arda Arcasoy
Eğrikuyu Monogenetic Field (EMF) is one of the five clusters of monogenetic volcanoes in Quaternary Central Anatolian Volcanic Province (CAVP). EMF consists mainly of scoria cones and a few maars (e.g. Kutören, Obruk). Previous studies on monogenetic volcanoes of CAVP mainly focused on...
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SlopeCalc
30 Jun 2011 | Offline Tools | Contributor(s): Georg Florian Zellmer
This executable takes a .txt file as input (see "example-Sr.txt"), and returns a .txt file as output (see "Slope-example-Sr.txt").The input file consists of distance, value, and uncertainty columns. The output file consistes of distance, slope, uncertainty of slope, intercept, and uncertainty of...
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Smithsonian's Global Volcanism Program Database
25 Mar 2011 | *Data Sets/Collections | Contributor(s): Paul Kimberly
For more than three decades the Smithsonian's Global Volcanism Program (GVP) has compiled descriptions of both ongoing and past volcanism around the world in order to better understand the full range of Earth's eruptive activity, building its database the Volcano Reference File (VRF). To make...
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SNGPlag
07 May 2019 | Offline Tools | Contributor(s): Benjamin James Andrews
SNGPlag. Supersaturation Nucleation and Growth of Plagioclase: a forward model of plagioclase nucleation and growth in decompressing magma. This tool models how plagioclase crystallization in a decompressing magma (of user specified composition) during a specified decompression path. User...
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Solubility of sulfur in basaltic melts
26 Apr 2013 | Presentations | Contributor(s): Marina Aletti, Michel Pichavant
VUELCO Conference, 2013, Barcelona (Spain)Sulfur is the third most abundant volatile element in magmatic melts, after H2O and CO2. Involved as a chief actor in many igneous processes, from the volcanic degassing to the formation of ore deposits, and due to the strong dependence between speciation...
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South Mono Geochemical Dataset
18 Jan 2014 | *Data Sets/Collections | Contributor(s): Marcus I Bursik
This is the set of geochemical data that are shown in the publication on the South Mono tephra (in review at JVGR as of 18 January 2014).
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Specchio di Venere alkaline lake (Sicily, Italy): geochemical investigations based on gas and water compositions
18 Sep 2013 | Presentations | Contributor(s): Giovannella Pecoraino, S. Bellomo, W. D’Alessandro, L. Brusca, M. Longo
The word “volcanic lake” is instinctively linked to a hot and acidic water body although alkaline lakes being not too rare. The abundant geogenic CO2 also contributes to weathering reactions within cold or thermal aquifers that release alkali and bicarbonate to groundwater. Such waters emerging...
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Spherulites and thundereggs from pitchstones of the Deccan Traps: geology, petrochemistry, and emplacement environments
18 Sep 2013 | Publications | Contributor(s): Pooja Vinod Kshirsagar
Spherulites and thundereggs are rounded, typically spherical, polycrystalline objects found in glassy silicic rocks. Spherulites are dominantly made up of radiating microscopic fibers of alkali feldspar and a silica mineral (commonly quartz). They form due to heterogeneous nucleation in highly...
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Spread sheet to calculate tephra volume for exponential thinning
03 Dec 2014 | Offline Tools | Contributor(s): Manuel Nathenson, Judy Fierstein
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...
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StereoP
27 Jun 2017 | *Tools | Contributor(s): Joaquin Alberto Cortes
StereoP is a tool to plot equal angle Stereonets
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Strike converter 1.0 for ImageJ
24 Jun 2019 | Offline Tools | Contributor(s): Joaquin Alberto Cortes
The resource is a plugin for ImageJ or Fiji that converts line orientations measured by the programme in the usual mathematical convention (i.e. horizontal is zero degrees and vertical is 90, clockwise is a negative value), into the standard geological way (i.e North-South orientation is zero...
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Strike converter 1.0 for ImageJ
24 Jun 2019 | Offline Tools | Contributor(s): Joaquin Alberto Cortes
The resource is a plugin for ImageJ or Fiji that converts line orientations measured by the programme in the usual mathematical convention (i.e. horizontal is zero degrees and vertical is 90, clockwise is a negative value), into the standard geological way (i.e North-South orientation is zero...