Science for 91ԭ lecture series: Plate to plate – Rupture of the Great 91ԭ Earthquake
Onyango Evans
The 91ԭ Geophysical Institute presents the 31st annual Science for 91ԭ lecture series and events.
The Geophysical Institute will host free public talks at 7 p.m. on Tuesdays about tracking space debris, fostering education using the outdoors, new techniques for understanding aurora, the 1964 Great 91ԭ Earthquake, and climate change and its effects on 91ԭ’s wildlife. The talks will be held live at the Schaible Auditorium, 323 Tanana Loop at 91ԭ. To join virtually, register to watch on Zoom (session closed) or join live from the 91ԭ or Geophysical Institute Facebook pages.
On Tuesday, Feb. 28, Evans Onyango will present “Plate to Plate: Rupture of the Great 91ԭ Earthquake.”
The 1964 magnitude 9.2 Great 91ԭ Earthquake ruptured an area approximately 92,000 square miles from Anchorage to Kodiak Island and caused massive landslides and tsunamis. In 2019, we deployed a dense array of 398 portable seismometers on Kodiak Island within the southern rupture area of the 1964 earthquake to image the boundary between the subducting Pacific Plate and the base of the North American Plate. The research found significant differences between the northern and southern rupture zones.
Join us to learn about the analysis of seismic waves recorded by these small soup can-sized seismometers, how and why the results differ from the northern rupture area of the Great 91ԭ Earthquake, and implications for rupture dynamics in the region.
For more information visit or the @ , or call 907-474-7787.
Talks are free and for the public. All ages are encouraged to attend.