Carlos La Verde Maurizio Battaglia Milton Ordonez 2022 <div id="abstracts" class="Abstracts u-font-gulliver text-s"><div id="ab0005" class="abstract author" lang="en"><div id="as0005"><p id="sp0080"><span>The morphology of the summit of Nevado del Ruiz&nbsp;volcano&nbsp;(Colombia) and its active Arenas&nbsp;crater&nbsp;is the product of complex interactions between effusive and explosive eruptions, and the dynamics of the summit glacier. Here, we document the morphologic evolution of the summit of Nevado del Ruiz, and the growth of its dome, from a variety of methods: monitoring data (2010 to 2021), photogrammetry,&nbsp;remote sensing, and quantitative modeling. The present morphology of Arenas crater, with small terraces limited by the walls of the crater, various vents of ash emission, and zones of fumarolic activity, has been shaped by the activity following the eruptions of 1845, 1985, 1989, 2012 and the volcanic unrest of the last 10&nbsp;years. The latest&nbsp;emplacement&nbsp;of a&nbsp;lava dome&nbsp;at the bottom of the main crater began in 2015. The dome grew, with fluctuations in its extrusion rate between ~0.19&nbsp;m</span>³/s (November 2015) and 0.02&nbsp;m³/s (February 2018), until December 2019, reaching a diameter of ~130&nbsp;m, a maximum height of ~60&nbsp;m, and a volume of 1.7&nbsp;±&nbsp;0.2&nbsp;×&nbsp;10⁶&nbsp;m³.</p></div></div></div> application/pdf 10.1016/j.jvolgeores.2022.107626 en Elsevier The new lava dome growth of Nevado del Ruiz (2015–2021) article