BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:94acc74f-5613-4e96-8194-4ae00d95e2aa.234508@calendar.missouristate.edu CREATED:20240228T194232Z LAST-MODIFIED:20240228T194232Z LOCATION:Roy Blunt Hall 345 SUMMARY:SEES Seminar: "How Gravitation and Heat Transfer Regulate Plate Te ctonics and Earth's Thermal Evolution" DESCRIPTION:Near-surface motions of Earth's plate are made possible by the cold\, brittle lithosphere being underlain by a weak low-velocity zone ( LVZ). The thermal states of both layers result from the leakage of Earth' s internal radiogenic heat to space. But to move the plates laterally req uires lateral forces. We propose that force imbalances arising in the uni que 3-body-Earth-Moon-Sun system are the main cause of complexity in thes e large-scale\, cooperative tectonic motions. Comparing rocky planets sho ws that the presence and longevity of volcanism and tectonism depend on t he particular combination of moon size\, moon orbital orientation\, proxi mity to the Sun\, and rates of body spin and cooling. Earth is the only r ocky planet with all the factors needed for plate tectonics. She will exp lain that because the lunar orbit is becoming more elliptical\, rather th an growing\, plate tectonics is ancient.\n\n\nDr. Anne M. Hofmeister obta ined her BS with highest honors in Physics and Literature - Harvey Mudd C ollege\, MS in Physics - University of Illinois\, PhD in Geology - Caltec h. She has experience with spectroscipic measurements of minerals\, was a postdoctoral associate and fellow at the Geophysical Laboratory performi ng high-pressure measurements under the supervision of Ho-Kwang Mao. She was an assistant professor and associate professor at U.C. Davis\, includ ing a David and Lucille Packard Fellowship. She also completed a brief sa bbatical as a Humbolt Fellow at the Max Planck Institute in Mainz\, Germa ny\, where she studied with Reinhard Boehler.\n\n\nCurrently\, she conduc ts research in several areas at the Earth and Planetary Science Departmen t at Washington University in St. Louis. Her research includes: Optical a nd infrared spectroscopy with collaborative application to astronomy to b etter understand the mechanism of heat transfer\; Measurement and modelli ng of heat transport and thermodynamic properties\, with application to g eophysics and planetary sceince\; Newtonian gravitational theory\; and Di latometry studies of rocks. She is best known for inferring macroscopic p roperties of solids from microscopy measurements of spectra. She publishe s in the areas of astronomy\, geoscience\, material science\, medicine\, physics and planetary science. She has served as the editor for American Mineralogist and as a councillor for the Mineralogical Society of America .  X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p>Ne ar-surface motions of Earth's plate are made possible by the cold\, britt le lithosphere being underlain by a weak low-velocity zone (LVZ). The the rmal states of both layers result from the leakage of Earth's internal ra diogenic heat to space. But to move the plates laterally requires lateral forces. We propose that force imbalances arising in the unique 3-body-Ea rth-Moon-Sun system are the main cause of complexity in these large-scale \, cooperative tectonic motions. Comparing rocky planets shows that the p resence and longevity of volcanism and tectonism depend on the particular combination of moon size\, moon orbital orientation\, proximity to the S un\, and rates of body spin and cooling. Earth is the only rocky planet w ith all the factors needed for plate tectonics. She will explain that bec ause the lunar orbit is becoming more elliptical\, rather than growing\, plate tectonics is ancient.</p>\n<p>Dr. Anne M. Hofmeister&nbsp\;obtained her BS with highest honors in Physics and Literature - Harvey Mudd Colle ge\, MS in Physics - University of Illinois\, PhD in Geology - Caltech. S he has experience with spectroscipic measurements of minerals\, was a pos tdoctoral associate and fellow at the Geophysical Laboratory performing h igh-pressure measurements under the supervision of Ho-Kwang Mao. She was an assistant professor and associate professor at U.C. Davis\, including a David and Lucille Packard Fellowship. She also completed a brief sabbat ical as a Humbolt Fellow at the Max Planck Institute in Mainz\, Germany\, where she studied with Reinhard Boehler.</p>\n<p>Currently\, she conduct s research in several areas at the Earth and Planetary Science Department at Washington University in St. Louis. Her research includes: Optical an d infrared spectroscopy with collaborative application to astronomy to be tter understand the mechanism of heat transfer\; Measurement and modellin g of heat transport and thermodynamic properties\, with application to ge ophysics and planetary sceince\; Newtonian gravitational theory\; and Dil atometry studies of rocks. She is best known for inferring macroscopic pr operties of solids from microscopy measurements of spectra. She publishes in the areas of astronomy\, geoscience\, material science\, medicine\, p hysics and planetary science. She has served as the editor for American M ineralogist and as a councillor for the Mineralogical Society of America. &nbsp\;</p></body></html> DTSTART;TZID=America/Chicago:20240412T143000 DTEND;TZID=America/Chicago:20240412T153000 SEQUENCE:0 URL:http://www.geosciences.missouristate.edu CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students END:VEVENT END:VCALENDAR