650-foot tsunami in Greenland made waves for days, scientists find NBC NewsA rumble echoed around the world for nine days. Here’s what caused it. The Washington PostEntire Earth vibrated for nine days after climate-triggered mega-tsunami The Guardian650-Foot High Megatsunami in Greenland Sends Seismic Waves Worldwide SciTechDailyWe Now Know Why Earth Vibrated for Nine Days in 2023 The Wall Street Journal