Discover the little-known tsunami that hit Japan in 1700 and the centuries it took to connect it to the underlying earthquake. Explore historical documentation and the Orphan Tsunami, compare the 2011 tsunami to other storms, and delve into evidence of past earthquakes and ghost forests. Stay tuned for the latest episodes and sponsored ads from Bank of America, Papa Murphy's, and the Bridge Access program for COVID-19 vaccines.
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Quick takeaways
Scientists took several decades to connect the 1700 tsunami in Japan to an earthquake in Chile.
Native American and First Nations oral traditions hint at the connection between earthquakes and floods in the Cascadia region.
Deep dives
The Orphan Tsunami: The Connection Between Earthquakes and Tsunamis
In this podcast episode, the hosts discuss the Orphan Tsunami, a historical event in which a tsunami struck Japan in 1700 without an associated earthquake. The episode highlights the three distinct parts of the story, beginning with the tsunami that hit Japan and the initial confusion surrounding its cause. The hosts explain that it took several decades for scientists to connect the 1700 tsunami to an earthquake in Chile. The second part of the episode focuses on the history of tsunamis in Japan, detailing the first written records and the origin of the word 'tsunami.' Lastly, the hosts discuss the impact of the Cascadia subduction zone earthquake, which occurred off the coast of North America and caused the orphan tsunami to reach both Japan and North America. They emphasize the importance of this research in understanding the potential for future earthquakes in the Pacific Northwest.
Native American and First Nations Peoples' Oral Traditions
Another aspect discussed in this podcast episode is the oral traditions of Native American and First Nations peoples in the Cascadia region. It highlights how these cultures have stories, folklore, and myths that hint at the connection between earthquakes and floods. Various tales and symbols depict the interplay between shaking ground and rushing water, reflecting an understanding of seismic activity in the region. The episode also mentions specific stories passed down through generations that likely refer to the 1700 earthquake and tsunami, demonstrating how oral history can provide valuable insights into past events.
Connecting the Cascadia Earthquake and the Orphan Tsunami
The podcast episode concludes by discussing the scientific research that linked the earthquake along the Cascadia subduction zone with the orphan tsunami in both Japan and North America. In the 1980s, evidence of large earthquakes in the region started to emerge, challenging the conventional belief that such earthquakes were not possible. By analyzing submerged forests, layers of silt, and oral histories, researchers established the occurrence of a magnitude 9 earthquake in 1700. This newfound understanding has important implications for the Pacific Northwest, as it has led to reevaluations of building standards and increased awareness of the potential for future seismic activity in the region.
This 2013 episode covers a tsunami that struck the coast of Japan in January 1700, . It took a while -- a long while -- to figure out where the catalyzing earthquake had been.