# Mysterious Seismic Event That Shook the Earth for 9 Days Traced to 650-Foot Tsunami in Greenland ## Research Uncovers the Root Cause of Prolonged Seismic Activity **Researchers have pinpointed the origin of a perplexing seismic event that caused the earth to tremble for an unusual nine-day period. The culprit, they have discovered, was a colossal 650-foot tsunami that struck the coast of Greenland. The findings, published in the journal "Nature Geoscience," shed light on the rare and enigmatic phenomenon.** ### The Unusual Seismic Signal **In October 2021, sensitive seismic instruments around the globe detected an exceptionally long-lasting seismic signal. The signal, which persisted for nine days, puzzled scientists as it deviated significantly from typical earthquake patterns. Earthquakes typically generate seismic signals that dissipate within hours or days, making this prolonged event highly unusual.** ### Greenland Tsunami as the Trigger **Through meticulous analysis of the seismic data, researchers identified the source of the signal: a massive tsunami that struck Greenland's northwest coast. The tsunami, triggered by a powerful underwater landslide, reached a staggering height of 650 feet and traveled across the ocean, generating seismic waves that reverberated around the planet for days.** ### Implications for Understanding Tsunamis and Seismic Activity **The discovery of the Greenland tsunami as the cause of the prolonged seismic event has important implications for our understanding of both tsunamis and seismic activity. It highlights the potential for tsunamis to generate long-range seismic signals, which could aid in early warning systems. Additionally, it suggests that underwater landslides may play a more significant role in triggering tsunamis than previously thought.** ### Ongoing Research and Future Implications **Researchers continue to study the Greenland tsunami and its impact on seismic activity. By further investigating the mechanisms behind this rare event, scientists aim to improve our ability to predict and mitigate the risks associated with tsunamis and earthquakes. The findings could lead to more accurate early warning systems and enhanced coastal defenses, ultimately safeguarding communities from these potentially devastating natural hazards.**
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