1 / 27

Native American Earthquake and Tsunami Stories from Northwestern California

Native American Earthquake and Tsunami Stories from Northwestern California. Vicki Ozaki Redwood National Park. Driving Force – geography of the Pacific Northwest. Cascadia Subduction Zone. Fuels - active volcanism of the Cascade Range.

mspigner
Télécharger la présentation

Native American Earthquake and Tsunami Stories from Northwestern California

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Native American Earthquake and Tsunami Stories from Northwestern California Vicki Ozaki Redwood National Park

  2. Driving Force– geography of the Pacific Northwest Cascadia Subduction Zone Fuels- active volcanism of the Cascade Range Geologic Setting - produces the largest earthquakes on earth

  3. Last Cascadia Earthquakeproduced profound effects • on the land and sea • Written stories from Japan • Oral history of Native Americans • Recorded in the geologic record (sediment and trees) Peat Tsunami Sand

  4. Coastal Cascadia Oral Histories Source locations of accounts of earthquake-tsunami stories. Recorded 1860-1964. (Ludwin et al 2005)

  5. Coastal Cascadia Oral Histories Estimated Dates from 9 Oral Histories “This is not a myth…my tale is seven generations old.. There was a great earthquake and all the houses of the Kaikuitl collapsed.”

  6. Coastal Cascadia Oral Histories Tree-ring & Japanese-records estimated event time of January 26 1700, 9 pm Oral-history-estimated event time of 1690 AD

  7. Tribal Territories of Northern California WIYOT

  8. Crescent City Location of Native American Earthquake and Tsunami Stories Humboldt Bay Alfred Kroeber and Robert Spott (1939)

  9. Geologic elements in Native Stories Strong Shaking Stories Subsidence Stories Tsunami Stories E – Earthquake Shaking Story E – Liquefaction S – Subsidence Story S – Subsidence Deposit T – Tsunami Story T – Tsunami Deposit

  10. Common Themes in Native Stories: • evening or night • ground shaking • ocean floods • liquefaction • uplift/down drop

  11. Natural Tsunami Warning • Ground SHAKING • Loud ROAR from the ocean • WATER RECEEDNG unusually far exposing the sea floor THINK TSUNAMI Go to High Ground

  12. How Prairie Became Ocean Earthquake travels up and down the coast sinking the ground until the prairies are submerged. “They went south first and sank the ground … he [Earthquake] repeatedly caused the ground to sink in the south. He kept sinking it: every little while there would be an earthquake, then another earthquake, and then another earthquake: that is what he was doing. And then the water would fill those places. Earthquake and Subsidence

  13. Oral history from Crescent City recorded in the early 1900s. Standing on rocks above the rive mouth a man felt the ground move suddenly. Trees swayed, some fell and the shaking seemed to go on forever. “When the earth shakes,” the Indian’s father had told him, “look at your canoe. If it’s sinking, get up on the reefs and run for high ground.” The canoe was sinking, along with the water level. He ran. The water came. Eventually it left behind a trail of death.

  14. Oral history from Crescent City recorded in the early 1900s. Standing on rocks above the rive mouth a man felt the ground move suddenly. Trees swayed, some fell and the shaking seemed to go on forever. “When the earth shakes,” the Indian’s father had told him, “look at your canoe. If it’s sinking, get up on the reefs and run for high ground.” The canoe was sinking, along with the water level. He ran. The water came. Eventually it left behind a trail of death. EARTHQUAKE LIQUIFACTION WATER RECEEDING TSUNAMI

  15. Sigwets Orekw A Flood (Yurok story told by Tskerkr)

  16. Orick Tsunami Core Peat Tsunami Sand Peat

  17. Klamath River

  18. Chetco River Test-Ch’as means tsunami in Tolowa A Flood Currently told today by Loren Brommelyn of the Tolowa Dee-ni’ Nation

  19. Yurok Oral Histories • Locations of earthquake and tsunami oral histories correlates with tsunami sand deposits and subsidence. • Provide descriptions of earthquake phenomena • In Orick Valley, tsunami water height was estimated based on oral histories at three locations (about 60 feet). Used in tsunami hazard planning.

  20. Native American Oral Histories: Ask permission to use oral histories from the Tribes before using in publications, videos, etc.

  21. Langi Village, Simuelue Island • Islanders knew to immediately go to high ground after an earthquake. • Oral tradition – Experienced devastating tsunami in 1907 • Smong • Stories conclude with lessons: “If a strong tremor occurs, • and if the sea withdraws soon after, run to the hills for • the sea will soon rush ashore.”

  22. Indonesia: Earthquakes are common but tsunamis are rare. Do Like the Simuelue Islanders: Every earthquake is an opportunity to practice evacuation whether there is a tsunami or not.

  23. Indonesia: Earthquakes are common but tsunamis are rare. Do Like the Simuelue Islanders: Every earthquake is an opportunity to practice evacuation whether there is a tsunami or not. When in doubt drill it out.

  24. Do Like the Simuelue Islanders: Talk about Smong ….Talk to your family, friends, students, and co-workers and help educate them on how to survive the next tsunami.

More Related