Lake sediment cores in Guatemala reveal directional ground shaking from the 1976 earthquake, offering rare insight into seismic directivity and helping reconstruct a 4,000-year paleoseismic history. Sediment cores collected from four lakes in Guatemala have captured evidence of the direction in which seismic waves traveled during the powerful magnitude 7.5 earthquake that struck the country [...]from SciTechDaily https://ift.tt/ZxJtyKE
