At Iceland's most consistently explosive volcano, there appears to have been a change in the last two weeks. Both tremor and earthquakes have increased beneath the glacier covered Katla volcano, and at the same time what appears to be rapid ground deformation was detected. So, does this mean that a magmatic intrusion is underway? Surprisingly, probably not. Today's video discusses why through the opinion and analysis of a geologist. Thumbnail Photo Credit: This work "Katla48", is a derivative of a photo (resized, cropped, text overlay, GeologyHub made graphics overlay (the image border along with the GeologyHub logo)) from "Sleeping volkano", by: Inga Vitola, 360around, 2011, Posted on Flickr, Flickr account link: https://www.flickr.com/photos/360around/, Photo link: https://www.flickr.com/photos/360around/8438441897/, CC BY 2.0. "Katla48" is used & licensed under CC BY 2.0 by Youtube.com/GeologyHub If you would like to support this channel, consider using one of the following links: (Patreon: http://patreon.com/geologyhub) (YouTube membership: https://www.youtube.com/channel/UCYeGh5VML5XPr5jYnzh3J6g/join) (Gemstone & Mineral Etsy store: http://prospectingarizona.etsy.com) (GeologyHub Merch Etsy store: http://geologyhub.etsy.com) Google Earth imagery used in this video: ©Google & Data Providers This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at [email protected] and I will make the necessary changes. Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image): Public Domain: https://creativecommons.org/publicdomain/mark/1.0/ CC BY 2.0: https://creativecommons.org/licenses/by/2.0/legalcode Sources/Citations: [1] Vedur.is / Iceland Met Office [2] VEIs, dates/years, composition, tephra layer name, DRE estimates, and bulk tephra volume estimates for volcanic eruptions shown in this video which were assigned a VEI 4 or larger are sourced from the LaMEVE database (British Geological Survey © UKRI), https://www2.bgs.ac.uk/vogripa/view/controller.cfc?method=lameve, Used with Permission [3] Source of Volcanic Explosivity Index (VEI) methodology and criteria: Newhall, C. G., and Self, S. (1982), The volcanic explosivity index (VEI) an estimate of explosive magnitude for historical volcanism, J. Geophys. Res., 87(C2), 1231–1238, doi:10.1029/JC087iC02p01231. 0:00 Katla Volcano 1:32 Meltwater Movement? 3:17 Typical Eruptions