Mapping Tsunami Hazards in California: When Experience Meets Expertise

Nick Graehl, engineering geologist in California Geological Survey’s Tsunami Program, often reflects on his first post-tsunami reconnaissance trip as a reminder of the importance of preparing Californians for a tsunami. “It’s something not everyone gets to experience but then once you have, you never forget.” From Studying to Experiencing Tsunami Effects A post-tsunami reconnaissance trip,…

2011 Tohoku-Oki Earthquake and Tsunami: Remembering the Victims, Learning from the Past

March 11, 2021: The California Geological Survey issues new Tsunami Hazard Area Maps for Del Norte and Mendocino counties By Rick Wilson, California Geological Survey (CGS) Many of my tsunami and non-tsunami colleagues can remember what they were doing on March 11, 2011, the day the magnitude 9 Tohoku-Oki earthquake struck offshore of Japan, unleashing…