{"id":2,"date":"2022-03-04T15:03:13","date_gmt":"2022-03-04T15:03:13","guid":{"rendered":"http:\/\/thm.iavceivolcano.org\/?page_id=2"},"modified":"2025-11-24T16:19:47","modified_gmt":"2025-11-24T16:19:47","slug":"homepage","status":"publish","type":"page","link":"https:\/\/thm.iavceivolcano.org\/","title":{"rendered":"Homepage"},"content":{"rendered":"<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><div class=\"alignfull slider-fullheight-wrapper\">\n\n    <div class=\"block-slider slider slider--fade ns triangle-bottom alignfull\" data-slider='{ \"type\": \"fade\", \"speed\": 2500, \"autoplay\": true, \"interval\": 5000, \"lazyLoad\": \"nearby\", \"rewind\": true, \"arrows\": false, \"drag\": false, \"pagination\": true, \"waitForTransition\": false, \"breakpoints\": { \"959\": { \"pagination\": false } }  }'>\n        <div class=\"slider__track\">\n            <div class=\"slider__list\">\n\n       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        \n            \n        <\/div>\n    <\/div>\n<\/div>\n\n\n<div class=\"home alignfull triangle-bottom\">\r\n\r\n    <div class=\"alignwide\">\r\n        <div class=\"row row-gutter+\">\r\n            <div class=\"col-lg-8\">\r\n                <div class=\"box\">\r\n\r\n                    <h2 class=\"home-title has-text-align-center\">IAVCEI communications &amp; announcements<\/h2>\r\n\r\n                    <div class=\"navigator\">\r\n                                                <a href=\"https:\/\/volcano.si.edu\/\" class=\"flex middle-xs\"><svg class=\"icon icon-volcano lazyload\" aria-hidden=\"true\" role=\"img\"><use xlink:href=\"#icon-volcano-2\"><\/use><\/svg> Ongoing volcanic activity<\/a>\r\n                    <\/div>\r\n\r\n                                        <div class=\"has-text-align-left\">\r\n\r\n                        \r\n                            <article id=\"post-75\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/special-volume-in-the-journal-of-volcanology-and-geothermal-researc\/\" title=\"Special volume&nbsp;in the Journal of Volcanology and Geothermal Research\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"Special volume&nbsp;in the Journal of Volcanology and Geothermal Research\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"Special volume&nbsp;in the Journal of Volcanology and Geothermal Research\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/special-volume-in-the-journal-of-volcanology-and-geothermal-researc\/\" title=\"Special volume&nbsp;in the Journal of Volcanology and Geothermal Research\">\r\n            <h2 class=\"article-title\">Special volume&nbsp;in the Journal of Volcanology and Geothermal Research<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2022-03-04T15:36:02+00:00\" content=\"2022-03-04T15:36:02+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                March 4, 2022            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>The Commission&nbsp;supported a special volume&nbsp;in the Journal of Volcanology and Geothermal Research presenting results of the eruption column model inter-comparison study. View the special issue&nbsp;here. The accurate description of the dynamics of convective plumes developed during explosive volcanic eruptions represents...<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                            <article id=\"post-74\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/thm-commission-sponsored-a-scientific-symposium\/\" title=\"THM Commission&nbsp;sponsored a scientific&nbsp;symposium\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"THM Commission&nbsp;sponsored a scientific&nbsp;symposium\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"THM Commission&nbsp;sponsored a scientific&nbsp;symposium\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/thm-commission-sponsored-a-scientific-symposium\/\" title=\"THM Commission&nbsp;sponsored a scientific&nbsp;symposium\">\r\n            <h2 class=\"article-title\">THM Commission&nbsp;sponsored a scientific&nbsp;symposium<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2022-03-04T15:35:41+00:00\" content=\"2022-03-04T15:35:41+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                March 4, 2022            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>The THM Commission&nbsp;sponsored a scientific&nbsp;symposium&nbsp;at the Cities on Volcanoes&nbsp;2018 meeting&nbsp;in Naples, Italy. Session S01.26&nbsp;Volcanic ash: from monitoring to impacts.&nbsp;Conveners: Takahiro Miwa | National Res. Inst. for Earth Science and Disaster Resilience (NIED), Costanza Bonadonna | Universit&eacute; de Gen&egrave;ve, Nobuo Geshi...<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                            <article id=\"post-73\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/iavcei-workshop-on-santorini-volcano\/\" title=\"IAVCEI workshop on Santorini Volcano\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"IAVCEI workshop on Santorini Volcano\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"IAVCEI workshop on Santorini Volcano\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/iavcei-workshop-on-santorini-volcano\/\" title=\"IAVCEI workshop on Santorini Volcano\">\r\n            <h2 class=\"article-title\">IAVCEI workshop on Santorini Volcano<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2022-03-04T15:35:29+00:00\" content=\"2022-03-04T15:35:29+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                March 4, 2022            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>IAVCEI workshop on Santorini Volcano, organised jointly by the Commission on Explosive Volcanism and the Commission on Tephra Hazard Modelling, and associated with Cities on Volcanoes 2020.&nbsp;DUE TO COVID-19, THIS MEETING HAS BEEN CANCELED. WE ARE WORKING ON OTHER OPTIONS...<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                            <article id=\"post-72\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/working-group-on-eruption-source-parameters\/\" title=\"Working Group on Eruption Source Parameters\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"Working Group on Eruption Source Parameters\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"Working Group on Eruption Source Parameters\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/working-group-on-eruption-source-parameters\/\" title=\"Working Group on Eruption Source Parameters\">\r\n            <h2 class=\"article-title\">Working Group on Eruption Source Parameters<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2022-03-04T15:35:05+00:00\" content=\"2022-03-04T15:35:05+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                March 4, 2022            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>A&nbsp;new Working Group on Eruption Source Parameters has&nbsp;formed. Learn more&nbsp;here.&nbsp;<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                            <article id=\"post-71\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/ivespa-database\/\" title=\"IVESPA database\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"IVESPA database\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"IVESPA database\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/ivespa-database\/\" title=\"IVESPA database\">\r\n            <h2 class=\"article-title\">IVESPA database<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2021-06-04T15:34:00+00:00\" content=\"2021-06-04T15:34:00+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                June 4, 2021            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>Open-source article&nbsp;published in&nbsp;JVGR&nbsp;documenting results of the Working Group on Eruption Source Parameters and the new&nbsp;IVESPA database<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                            <article id=\"post-70\" class=\"article-item\" itemscope itemtype=\"http:\/\/schema.org\/NewsArticle\">\r\n\r\n        <div class=\"article-image-wrap\">\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/the-thm-commission-is-co-organizing-a-scientific-symposium\/\" title=\"The THM Commission is co-organizing a scientific symposium\" class=\"article-image-link\">\r\n\r\n            <div class=\"loading-placeholder\">\r\n                <img loading=\"lazy\" decoding=\"async\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20128%20128'%3E%3C\/svg%3E\" data-src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"The THM Commission is co-organizing a scientific symposium\" width=\"128\" height=\"128\" class=\"article-image lazyload\">\r\n            <\/div>\r\n\r\n            <noscript>\r\n                <img decoding=\"async\" src=\"https:\/\/www.iavceivolcano.org\/template\/img\/placeholder.svg\" alt=\"The THM Commission is co-organizing a scientific symposium\" loading=\"eager\" width=\"128\" height=\"128\" class=\"article-image\">\r\n            <\/noscript>\r\n\r\n        <\/a>\r\n    <\/div>\r\n    \r\n    <div class=\"article-desc\">\r\n\r\n        <a href=\"https:\/\/thm.iavceivolcano.org\/the-thm-commission-is-co-organizing-a-scientific-symposium\/\" title=\"The THM Commission is co-organizing a scientific symposium\">\r\n            <h2 class=\"article-title\">The THM Commission is co-organizing a scientific symposium<\/h2>\r\n        <\/a>\r\n\r\n                <div class=\"article-metadata\">\r\n\r\n            \r\n            \r\n            <time itemprop=\"datePublished\" datetime=\"2021-06-04T15:33:00+00:00\" content=\"2021-06-04T15:33:00+00:00\" class=\"article-time badge-sm badge badge-gray\">\r\n                June 4, 2021            <\/time>\r\n\r\n        <\/div>\r\n        \r\n        <p>The THM Commission is co-organizing a scientific symposium at the Fall AGU meeting entitled &ldquo;Tephra, volcanic processes, and hazards: A session in honor of Don Mullineaux&rdquo;. Abstracts are due August 4th and details can be found&nbsp;here.<\/p>    <\/div>\r\n\r\n<\/article>\r\n                        \r\n                        <a href=\"\/news\/\" class=\"btn btn-black home-more mb++\">More News ...<\/a>\r\n                    <\/div>\r\n                    \r\n                <\/div>\r\n            <\/div>\r\n\r\n            \r\n            <div class=\"col-lg-4\">\r\n                <div class=\"box\">\r\n                    <h2 class=\"home-title has-text-align-center\">Latest Newsletter<\/h2>\r\n\r\n                    <ul class=\"thumbnail list-bare\">\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2026\/04\/iavcei_newsno1_march2026_final_edited.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">2026 no.1<\/a><\/li>\n\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2026\/01\/iavcei_newsno4_december2025_corrected.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">2025 no.4<\/a><\/li>\n\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2025\/10\/iavcei_newsno3_october2025_final-1.pdf\">2025 no.3<\/a><\/li>\n\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2025\/06\/iavcei_newsno2_june2025_final.pdf\">2025 no.2<\/a><\/li>\n\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2025\/04\/iavcei_newsno1_march2025_final_correction.pdf\">2025 no.1<\/a><\/li>\n\n<li><a href=\"https:\/\/www.iavceivolcano.org\/content\/uploads\/2024\/12\/iavcei_newsno4_december2024_final.pdf\">2024 no.4<\/a><\/li>\n<\/ul>\r\n                    <div class=\"has-text-align-center mt+\"><a href=\"\/newsletter\/\" class=\"btn btn-black mb++\">More Newsletters ...<\/a><\/div>\r\n\r\n                <\/div>\r\n\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n\r\n    <div style=\"height: 6rem\"><\/div>\r\n\r\n    <svg viewbox=\"0 0 100 100\" preserveaspectratio=\"none\" class=\"triangle triangle-bottom\">\r\n        <path d=\"M0 0 L50 90 L100 0 V100 H0\" fill=\"#eeeeee\"><\/path>\r\n    <\/svg>\r\n\r\n\r\n<\/div>\r\n\r\n<div class=\"gradient alignfull\"><\/div>\r\n\r\n<div style=\"height: 4rem\"><\/div>\r\n\r\n\n\n\n\n<h2 class=\"block-heading has-text-align-center\" id=\"about-iavcei-commission-on-hazards-and-risk\">About THM IAVCEI Commission<\/h2>\n\n\n\n<p class=\"has-text-align-center\">The <strong>IAVCEI Commission on Tephra Hazard Modelling (THM)<\/strong> was established in 2003 to advance the quantitative understanding of tephra hazards through numerical modelling and field data. Over the past 15+ years, the Commission has organised workshops and symposia, and strengthened collaboration among numerical modellers, field geologists, and operational forecasters from VAACs and volcano observatories.<\/p>\n\n\n\n<p>Our work has produced several notable outcomes, including:<\/p>\n\n\n\n<ul class=\"block-list\">\n<li>a benchmark dataset for validating volcanic tephra sedimentation models;<\/li>\n\n\n\n<li>scientific recommendations for collecting the largest clasts in tephra deposits to help determine plume height;<\/li>\n\n\n\n<li>a consensus document from two IUGG&ndash;WMO workshops on volcanic ash and aviation (2010, 2013); and<\/li>\n\n\n\n<li>a<strong> <\/strong><em>Journal of Volcanology and Geothermal Research <\/em>special issue on eruption column model intercomparison.<\/li>\n<\/ul>\n\n\n\n<p class=\"has-text-align-center\">We are currently leading a Geological Society of London \/ AGU GeoHorizons volume titled <strong><em>Tephra: From Reconstructing Past Volcanic Eruptions to Modelling and Forecasting Future Hazards<\/em><\/strong>.<\/p>\n<\/body><\/html>\n","protected":false},"excerpt":{"rendered":"<p>About THM IAVCEI Commission The IAVCEI Commission on Tephra Hazard Modelling (THM) was established in 2003 to advance the quantitative understanding of tephra hazards through numerical modelling and field data. Over the past 15+ years, the Commission has organised workshops&#8230;<\/p>\n","protected":false},"author":305,"featured_media":0,"parent":0,"menu_order":2,"ping_status":"closed","template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","footnotes":""},"class_list":["post-2","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/pages\/2","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/users\/305"}],"version-history":[{"count":16,"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/pages\/2\/revisions"}],"predecessor-version":[{"id":164,"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/pages\/2\/revisions\/164"}],"wp:attachment":[{"href":"https:\/\/thm.iavceivolcano.org\/api\/wp\/v2\/media?parent=2"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}