Jonathan Hagstrum (US) has worked as a research geophysicist with the US Geological Survey since 1979. He has a PhD from Stanford University, an MSc from the University of Michigan, and a BA from Cornell University. His body of work lies primarily within the fields of paleomagnetism, geomagnetism, structural geology, and plate tectonics. More recently his research topics have included the geophysical underpinnings of animal navigation, the geological effects of large-body oceanic impacts during the Phanerozoic, and extinction events in the Late Pleistocene.
Jon Hagstrum: 'Avian Navigation, Pigeon Homing and Infrasound'
Birds can navigate accurately over hundreds to thousands of kilometres. Their senses outnumber those of humans and can detect small changes in barometric pressure and the weak geomagnetic field. Jon Hagstrum discusses how birds might use natural infrasonic signals for long-range navigation.
Session 10: The Terrain of Infrasound
Sunday 1 March
12:00 - 14:00
Paradiso, Main Hall
Infrasound is extremely long sound waves (up to 171 kilometres) below the threshold of human hearing. They literally connect the solid Earth to oceans and weather as well as to industrial practices. Infrasound-sensing stations all over the world record, for example, rocket launches, auroras, collapsing glaciers, mudslides, atomic tests and mine explosions.