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Planetary EcologistDispersal index (Volcanology 🌋)Dispersal index is a parameter in volcanology. The dispersal index D {\displaystyle D} was defined by George P. L. Walker in 1973 as the surface area covered by an ash or tephra fall, where the thickness is equal or more than 1/100 of the thickness of the fall at the vent. An eruption with a low dispersal index leaves most of its products close to the vent, forming a cone; an ...<a href="https://en.wikipedia.org/wiki/Dispersal_index" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://en.wikipedia.org/wiki/Dispersal_index</a><a href="https://mastodon.social/tags/DispersalIndex" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#DispersalIndex</a> <a href="https://mastodon.social/tags/Tephra" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Tephra</a> <a href="https://mastodon.social/tags/Volcanology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Volcanology</a>

💧🌏 Greg Cocks‘Mystery Volcano’ That Erupted And Cooled Earth In 1831 Has Finally Been Identified -- <a href="https://www.accuweather.com/en/weather-news/mystery-volcano-that-erupted-and-cooled-earth-in-1831-has-finally-been-identified/1729581" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://www.accuweather.com/en/weather-news/mystery-volcano-that-erupted-and-cooled-earth-in-1831-has-finally-been-identified/1729581</a> <--shared technical article -- <a href="https://doi.org/10.1073/pnas.2416699122" rel="nofollow noopener noreferrer" translate="no" target="_blank">https://doi.org/10.1073/pnas.2416699122</a> <--shared paper -- <a href="https://techhub.social/tags/GIS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#GIS</a> <a href="https://techhub.social/tags/spatial" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatial</a> <a href="https://techhub.social/tags/mapping" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#mapping</a> <a href="https://techhub.social/tags/glaciochemical" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#glaciochemical</a> <a href="https://techhub.social/tags/geochemistry" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geochemistry</a> <a href="https://techhub.social/tags/climate" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#climate</a> <a href="https://techhub.social/tags/climatechange" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#climatechange</a> <a href="https://techhub.social/tags/sulfurdioxide" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#sulfurdioxide</a> <a href="https://techhub.social/tags/neversummer" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#neversummer</a> <a href="https://techhub.social/tags/temperature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#temperature</a> <a href="https://techhub.social/tags/weather" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#weather</a> <a href="https://techhub.social/tags/icecore" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#icecore</a> <a href="https://techhub.social/tags/LittleIceAge" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#LittleIceAge</a> <a href="https://techhub.social/tags/dating" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#dating</a> <a href="https://techhub.social/tags/model" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#model</a> <a href="https://techhub.social/tags/modeling" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#modeling</a> <a href="https://techhub.social/tags/spatialanalysis" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#spatialanalysis</a> <a href="https://techhub.social/tags/historic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#historic</a> <a href="https://techhub.social/tags/volcanic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanic</a> <a href="https://techhub.social/tags/eruption" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#eruption</a> <a href="https://techhub.social/tags/stratigraphy" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stratigraphy</a> <a href="https://techhub.social/tags/Zavaritskii" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Zavaritskii</a> <a href="https://techhub.social/tags/caldera" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#caldera</a> <a href="https://techhub.social/tags/ash" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#ash</a> <a href="https://techhub.social/tags/KurilIslands" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#KurilIslands</a> <a href="https://techhub.social/tags/Japan" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Japan</a> <a href="https://techhub.social/tags/Kamchatka" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Kamchatka</a> <a href="https://techhub.social/tags/Russia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Russia</a> <a href="https://techhub.social/tags/volcano" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcano</a> <a href="https://techhub.social/tags/stratospheric" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#stratospheric</a> <a href="https://techhub.social/tags/cryptotephra" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#cryptotephra</a> <a href="https://techhub.social/tags/tephra" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tephra</a> <a href="https://techhub.social/tags/andesite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#andesite</a> <a href="https://techhub.social/tags/dacite" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#dacite</a> <a href="https://techhub.social/tags/Simushir" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Simushir</a> <a href="https://techhub.social/tags/SimushirIsland" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#SimushirIsland</a>

GeologistsCatToday is <a href="https://mastodon.social/tags/VolcanoThursday" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#VolcanoThursday</a>. These are <a href="https://mastodon.social/tags/lapilli" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#lapilli</a> in <a href="https://mastodon.social/tags/buildingstone" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#buildingstone</a>. Lapilli describes the size of <a href="https://mastodon.social/tags/tephra" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#tephra</a>-a <a href="https://mastodon.social/tags/volcanic" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#volcanic</a> <a href="https://mastodon.social/tags/rock" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rock</a>. These are accretionary lapilli-round particles formed in a wet cloud of volcanic ash. Found during <a href="https://mastodon.social/tags/hedgewatch" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#hedgewatch</a> on the <a href="https://mastodon.social/tags/Azores" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#Azores</a> Humans <a href="https://mastodon.social/tags/PawForScale" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#PawForScale</a> <a href="https://mastodon.social/tags/urbangeology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#urbangeology</a> <a href="https://mastodon.social/tags/geology" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#geology</a> <a href="https://mastodon.social/tags/nature" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#nature</a> <a href="https://mastodon.social/tags/rocks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#rocks</a>

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