Which of the following is likely not a factor in the amount of shaking that might occur at a ... How do we know that the last great Cascadia earthquake occurred in January 26, 1700. Variations in the growth patterns of trees from year to year, related to unusual wet seasons or drought years, allowed these scientists to conclude that trees in four of these estuaries were inundated some time between August 1699 and May 1700, strong evidence that the estuaries were downdropped at the same time by an earthquake of magnitude greater than 8.
Evidence for Plate Tectonics The evidence for Plate Tectonics is very conclusive.
Evidence. Tree-ring evidence for an A.D. 1700 Cascadia earthquake in Washington and northern Oregon Gordon C.Jacoby Daniel E.Bunker Lamont-Doherty Earth Observatory, Palisades, New York 10964 Boyd E.Benson GeoEngineers Inc., 8410 154th Avenue N.E., Redmond, Washington 98052 ABSTRACT ... and over a relatively large geographic area, based on statistical evidence for earthquake activity and an understanding of tectonic processes is called.
a. clothing caught high in tree branches b. GPS measurements of the ocean surface c. satellite images of the wave as it went onshore d. wave-transported fish, debris and water damage in second and third stories of homes and buildings e. both a and d 6.
Start studying GEOL 105 EXAM 1!. Precise radiocarbon and tree-ring dating, combined with inverse modeling of a tsunami recorded in Japan, show that an earthquake near magnitude 9 ruptured much of the Cascadia subduction zone on 26 January AD 1700 (Nelson et al., 1995, Satake et al., 2003, Atwater et al., 2005).We selected five field sites to estimate coseismic subsidence from this earthquake along 400 km of the Oregon coast. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The earthquake took place at about 21:00 Pacific Time on January 26, 1700 ().Although there are no written records for the region from the time, the timing of the earthquake has been inferred from Japanese records of a tsunami that does not correlate with any other Pacific Rim quake. Oral traditions of people native to the Pacific Northwest and lots of scientific data point clearly to a major earthquake along the Cascadia Subduction Zone in 1700, and another one is looming.
5. Earthquakes on the Cascadia Subduction Zone have struck the Northwest offshore for at least 10,000 years. The most recent big Cascadia earthquake occurred on January 26, 1700, dated by accounts from Japan of an orphan tsunami generated by a Cascadia earthquake and recorded after the wave crossed the Pacific Ocean. It is a very well supported theory, and while scientific debate continues about small parts or local effects, the overall concept is accepted as good as fact. What type of evidence was used to measure the height of the tsunami following the recent 2010 Chile earthquake?