Los depósitos de caída de tefra: Una breve revisión sobre su cuantificación y análisis para la clasificación de erupciones volcánicas explosivas, con ejemplos Latinoamericanos

15 Nov 2015 | Contributor(s): Jorge E. Romero

La cuantificación de los depósitos volcánicos es una de las herramientas más utilizadas en la actualidad para clasificar la magnitud de la actividad volcánica y determinar los peligros volcánicos asociados. En el caso especial de las erupciones...

Towards the reconstruction of the shallow plumbing system of the Barombi Mbo Maar (Cameroon) Implications for diatreme growth processes of a polygenetic maar volcano

30 Aug 2015 | Contributor(s): CHAKO TCHAMABE Boris, Takeshi Ohba, Gabor Kereszturi, Karoly Nemeth, Aka Festus Tongwa, Dieudone Youmen, Isabel Meza, Yasuo Miyabuchi, Seigo Ooki, Greg Zinkeng Tanyileke, Hell Joseph Victor

Understanding the mechanisms involved in the formation of maars and their diatreme growth processes has been a subject of contention. While there is no direct evidence of the presence of diatremes beneath most of the young maars, their existence is inferred based on the amount and type of country...

D. Rouwet, B. Christenson, F. Tassi, J. Vandemeulebrouck (eds): Volcanic Lakes Springer 2015. Advances in Volcanology, 533 pages, Hardcover ISBN 978-3-642-36832-5, eBook: ISBN 978-3-642-36833-2. DOI: 10.1007/978-3-642-36833-2

30 Aug 2015 | Contributor(s): CHAKO TCHAMABE Boris

Tephra 2014-2020 Document Repository

01 Jul 2015 | Contributor(s): Marcus I Bursik, Solene Pouget, Stephen C Kuehn, Kristi L Wallace, Andrei V Kurbatov

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...

Timescales of mingling in shallow magmatic reservoirs

12 Jun 2015 | Contributor(s): Chiara Paola Montagna, paolo papale, antonella longo

Arrival of magma from depth into shallow reservoirs has been documented as one of thepossible processes leading to eruption. Magma intruding and rising to the surface interacts with thealready emplaced, degassed magmas residing at shallower depths, leaving chemical signatures inthe erupted...

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...

Use of SFT in Irazu volcano. Negative dispersion case

21 Mar 2015 | Contributor(s): Jose Brenes

Sequential fragmentation/transport model was applied to Irazu volcano, Costa Rica. Fragmentation coefficient line was treated under a new light

Fallout tephra simulation for free

06 Jan 2015 | Contributor(s): Jose Brenes

GreetingsI am a retired Physics professor at Universidad de Costa Rica who is now tackling some volcanlogical issues, although my original field of study was superconductivity!!! QUITE A CHANGEAdjoint you will find some ideas I have being testing. You are encourage to give me your frank...

AGU Poster: Results of the Tephra 2014 Workshop on Maximizing the Potential of Tephra for Multidisciplinary Science

11 Dec 2014 | Contributor(s): Stephen C Kuehn, Solene Pouget, Kristi L Wallace, Marcus I Bursik

Poster presentation from the 2014 AGU Fall Meeting reporting on results and conclusions of the Tephra 2014 workshop

Tephra 2014 Field Trip Guide

08 Dec 2014 | Contributor(s): Stephen C Kuehn

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

Monogenetic volcanism of the Michoacán-Guanajuato Volcanic Field: Maar craters of the Zacapu basin and domes, shields, and scoria cones of the Tarascan highlands (Paracho-Paricutin region) Pre-meeting field guide for the 5th International Maar Confer

01 Dec 2014 | Contributor(s): Claus Siebe, Marie-Noëlle Guilbaud, Sergio Salinas, Pooja Kshirsagar, Magdalena Oryaëlle Chevrel, Juan Ramón de la Fuente, Athziri Hernández Jiménez, Lourdes Godínez

Monogenetic volcanism of the Michoacán-Guanajuato Volcanic Field: Maar craters of the Zacapu basin and domes, shields, and scoria cones of the Tarascan highlands (Paracho-Paricutin region)A pre-meeting fieldtrip (November 13-17) prior to the 5th International Maar Conference...

Contrasting eruptive styles of late Pleistocene-to-Holocene monogenetic volcanism from maars to domes in the Serdán-Oriental basin, eastern Mexican Volcanic Belt Post-meeting field guide for the 5th International Maar Conference, Querétaro, México

01 Dec 2014 | Contributor(s): Gerardo Carrasco-Núñez, Michael H. Ort, Nancy R. Riggs, Brian Zimmer, Lorena De León-Barragán, Mario López-Rojas

Contrasting eruptive styles of late Pleistocene-to-Holocene monogenetic volcanism from maars to domes in theSerdán-Oriental basin, eastern Mexican Volcanic BeltGerardo Carrasco-Núñez1,*, Michael H. Ort2, Nancy R. Riggs2, Brian Zimmer3,, Lorena De...

The Valle de Santiago maars, México: the record of magma-water fluctuations during the formation of a basaltic maar (La Alberca) and active post-desiccation subsidence at the bottom of a maar lake (Rincón de Parangueo) Intra-conference Field trip 5th

01 Dec 2014 | Contributor(s): José Jorge Aranda-Gómez, Gerardo Carrasco-Núñez

The Valle de Santiago maars, México: the record of magma-water fluctuations during the formation of a basaltic maar (La Alberca) and active post-desiccation subsidence at the bottom of a maar lake (Rincón de Parangueo)Jóse Jorge Aranda-Gómez* and Gerardo...

Maars associated with fracture- and/or conduit-controlled aquifers in folded limestone in San Luis Potosí, México Pre-conference Field trip 5th International Maar Conference, Querétaro, México

01 Dec 2014 | Contributor(s): José Jorge Aranda-Gómez, Pablo Dávila-Harris

Maars associated with fracture- and/or conduit-controlled aquifers in folded limestone in San Luis Potosí, MéxicoJosé Jorge Aranda-Gómez1,*, Pablo Dávila-Harris2, **1 Centro de Geociencias, Universidad Nacional autónoma de México, UNAM Campus...

5th International Maar Conference - Abstract Book - 2014

01 Dec 2014 | Contributor(s): Carrasco-Núñez G., Aranda-Gómez J.J., Ort M.H., Silva-Corona J.J.

Contribution of methane to total gas pressure in deep waters at lakes Nyos and Monoun (Cameroon, West Africa)

17 Jul 2014 | Contributor(s): Issa, Takeshi Ohba, Wilson Fangtong, Alain Fouepe, CHAKO TCHAMABE Boris, Yukata Yoshida, Minoru Kusakabe, Sigha Kamdjou, Urumu TSUNOGAI, Yu Uginuma, Greg Zinkeng Tanyileke, Hell J.V.

https://www.jstage.jst.go.jp/article/geochemj/47/3/47_2.0250/_article

MeMoVolc workshop on the "Dynamics of volcanic explosive eruptions", Consensual Document

15 Jul 2014 | Publications | Contributor(s): Costanza Bonadonna, Raffaello Cioni, Antonio Costa, Tim Druitt, Jeremy Phillips, Laura Pioli

This workshop served to assess the main advantages and shortcomings of existing eruption classification schemes and to identify open questions and research priorities that could help improve our understanding of volcanic explosive eruptions. We identified the main parameters and processes...

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

15 Apr 2014 | Publications | Contributor(s): Domenico M. Doronzo

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...