The Geodynamo: A Unique Window Into the Dynamics of Earth's Deep Interior скачать в хорошем качестве

The Geodynamo: A Unique Window Into the Dynamics of Earth's Deep Interior

Earth's magnetic field is generated by convective motion in the liquid iron outer core, commonly referred to as the geodynamo. The magnetic field has been protecting Earth from harmful charged particles for at least the last 2.5 billion years, and possibly longer. In this talk, Dr. Driscoll will discuss the physical mechanisms that produce the geomagnetic field, conduct a brief survey of planetary magnetism, and explore Earth’s rich paleomagnetic history preserved in ancient rocks, including polarity reversals, superchrons, paleointensity, and the impact of the solidification of the inner core. He will highlight the pioneering contributions made by the Department of Terrestrial Magnetism on early studies of geomagnetism. Dr. Peter Driscoll: Staff Scientist, Department of Terrestrial Magnetism, Carnegie Institution for Science #Geodynamo ___________________________________________________________________________ Doors open to the public at 6:00 p.m. with light refreshments. The campus is located at the intersection of Broad Branch Road and 32nd Street in northwest Washington, DC.Parking is available on campus and accessible via Jocelyn and 32nd Streets. Street parking is permissible. The campus is a short, three-block walk from Connecticut Avenue and two blocks south of Military Road.