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Washington State University
College of Arts and Sciences geology

Dr. Universe: How do earthquakes happen?

Dr. UniverseWe’ve had a lot of earthquakes on our planet this year. Maybe you’ve learned about them from the news or felt one shaking up your own neighborhood. Earthquakes can happen in a few different ways.

First, it is important to know a bit about the Earth’s outer layer, or crust. The crust is made of seven big pieces called “plates.” They are about 60 miles thick and sort of float on the molten rock beneath them. That’s what I found out from my friend Sean Long, a WSU geology professor who knows a lot about earthquakes. » More …

Powerful new microscope adds versatility to research

Daniel Mullendore and Valerie Lynch‑Holm work with the Apreo VolumeScope.The WSU Franceschi Microscopy and Imaging Center has acquired a microscope so powerful and versatile that Michael Knoblauch, the center director, compares it to a pig capable of making wool, milk and eggs. Or, to quote his native German, an eierlegende Wollmilchsau.

Technically, it’s an Apreo VolumeScope, and it brings a suite of imaging techniques, including the piecing together of detailed three‑dimensional images with a resolution of 10 nanometers, or about 1/10,000th of the width of a human hair. » More …

Sex that moves mountains: Spawning fish can influence river profiles

Alex FremierIt turns out that sex can move mountains. A Washington State University researcher has found that the mating habits of salmon can alter the profile of stream beds, affecting the evolution of an entire watershed. His study is one of the first to quantitatively show that salmon can influence the shape of the land.

Alex Fremier, lead author of the study and associate professor in the WSU School of the Environment, said female salmon “fluff” soil and gravel on a river bottom as they prepare their nests, or redds. » More …