SMITHSONIAN JOURNEYS EXPERTS
Patrick Abbott has a Ph.D. in geology from the University of Texas at Austin. He is a long-time Professor of Geology at San Diego State University. Pat's research on reconstructing ancient continental positions has focused on the region stretching from coastal Mexico to coastal Alaska. His college textbook, Natural Disasters, published by McGraw-Hill, is in its ninth edition, and discusses in detail the plate tectonics, earthquakes, climate change, and volcanic history of the Pacific region. He appeared in the TV series The Real Gilligans Island on TBS and contributed to a History Channel program in spring 2012 on geological and meteorological phenomena. Pat will lecture on the plate tectonics and volcanic activity in the areas visited on this cruise, and why these regional phenomena are significant on a global scale.
WHAT OUR TRAVELERS SAY
Patrick gave very clear and very interesting lectures and answered everyone's questions. He's clearly very knowledgeable about the subjects he lectured on. I also appreciated his making himself available to talk further outside of the lecture time and, based on my observations, my fellow travelers appreciated this too.”
Marianne S., A Transpacific Voyage
BY THE EXPERT
A Q&A with Expert Pat Abbott
Q: You literally wrote the book on plate tectonics, earthquakes, volcanism, and other fascinating geological phenomena. Your college textbook, Natural Disasters, now in its 9th edition, is one of the most popular textbooks in the field. What originally led to your interest in the field of geology?
A: I became interested in geology because of its thought processes, fusing some of the best of the arts with the sciences, reading the history of the Earth. The artistic thinking weighs multi-variables through space and time to generate hypotheses. Then, scientific thinking tests the viability of the hypotheses. It is thrilling and satisfying to be a geologist.
Q: Your lectures on this program will cover wide-ranging geological topics which link together the itinerary, including how plate tectonics shaped the Northwest-Pacific region, as well as the root causes of the high incidence of earthquakes and tsunami in the Northern Pacific. What evidence of these geological phenomena will Smithsonian travelers witness in the course of this program?
A: Results of plate-tectonic actions will be seen as land upwarped above subduction zones, volcanoes built above downgoing oceanic plates, continental fragments that collided and stacked together. We will see active volcanoes that are part of the famous Pacific Ring of Fire, new coastal lands that formed by uplifting of sea floors during mega-earthquakes, tsunami damage from the 2011 magnitude 9.0 earthquake in Japan and the 1964 magnitude 9.2 earthquake in Alaska, and more.
Q: The Aleutian Islands and the North Pacific Ocean are a remnant of the 1,000 mile wide Bering Land Bridge that enabled human migration to the Americas from Asia approximately 30,000 years ago. Can you please lend perspective, both in terms of the land bridge's geological significance and in terms of its impact on the spread of human populations?
A: Our world today has many islands and extensive shallow seas. But during the last glacial advance, global sea level was 425 feet lower, exposing more land, connecting lands. Peoples of the world could easily migrate into lands new to them -- and they did. For example, when Siberia connected to Alaska, people took the opportunity to move, crossing icy land, kayaking along shores, reaching America in successive waves separated in time. As DNA studies progress, our knowledge of the peopling of the Americas is expanding significantly.