Scientists have identified a deeper, sloped reservoir beneath Germany’s Lake Lach volcano, contrary to prior beliefs of a vertical structure. Over 1,000 small earthquakes have linked the lake’s calm surface to an active underground system, prompting a need for closer scrutiny.
Using over 500 sensors and fiber-optic cables, researchers mapped the area, revealing that the reservoir tilts toward the Neuwied Basin, where many earthquakes are clustered. Most recorded quakes occurred 6 to 10 miles underground, typically too small for human detection, suggesting they may involve moving fluids.
The study also observed unusual seismic reflections indicating fluid accumulation, possibly from magma. Though Lach Lake’s last eruption was over 13,000 years ago, deeper seismic activities hint at ongoing pressure buildup.
While the findings show a dynamic underground system, they do not confirm an imminent eruption, instead indicating a broader tectonic activity. Enhanced seismic mapping aids in monitoring and planning in this complex volcanic region, establishing a clearer understanding of risks associated with the Eifel area. The research is detailed in the Geophysical Journal International.
