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Abstract
This study investigates the feasibility of earthquake forecasting in northern Iceland using changes in groundwater chemistry. Building on a 2014 study showing groundwater chemistry changes preceding two M≥5 earthquakes, this research analyzes data from 2014-2023. The results indicate that one of the three M≥5 earthquakes during this period could have been forecast based on statistically significant changes in groundwater chemistry 4-6 months prior. Oscillatory changes in chemistry suggest crustal dilation and fracture mineralization associated with pre-earthquake stress buildup. The study proposes a method for implementing this approach elsewhere, emphasizing the need for long-term monitoring of groundwater chemistry.
Publisher
Communications Earth & Environment
Published On
Nov 06, 2024
Authors
Alasdair Skelton, Erik Sturkell, Carl-Magnus Mörth, Gabrielle Stockmann, Sigurjón Jónsson, Andri Stefansson, Lillemor Liljedahl-Claesson, Niklas Wästeby, Margareta Andrén, Elin Tollefsen, Jóhann Gunnarsson Robin, Nicole Keller, Halldór Geirsson, Hreinn Hjartarson, Ingrid Kockum
Tags
earthquake forecasting
groundwater chemistry
northern Iceland
crustal dilation
stress buildup
long-term monitoring
seismic activity
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