Listen

Description

TSSM goes heavy: hard-hitting journalism from one of science's great controversialists, Anne Hofmeister. Intrigued? Disagree? Write me an email (giesting@alumni.nd.edu) or look her up at Washington University in St. Louis' EPS department website.


The times below are keyed to the start of the interview and ignore my opening (just over 2 min).


0:00 Introduction


1:00 Anne's background (sorry, this part Anne was talking so quietly that I can't seem to fix it with Audacity, but bear with us; we moved the microphone and figured some things out and it gets better)


2:00 Spectroscopy and heat transfer


3:00 Thermal conductivity experiments and their pitfalls


5:00 Criticism of the history of thermodynamics and heat transfer; identification of light and heat


6:00 Problems with equilibrium and elastic collisions in theories of thermodynamics


8:00 Criticism of phonon theory


10:00 Electron and vibrational transfer of heat decoupled; metals and heat transfer


13:00 Garnet


14:00 Earth's interior: convection, the Rayleigh number


15:00 Viscosity


16:00 The Earth's mantle: nearly all solid


17:00 Plate tectonics without mantle convection


18:00 An even more radical idea: heat is being trapped inside the solid Earth


19:00 [there was a distortion I had to cut]


20:00 Implications: heat generation is in the crust (this part is widely known!)


21:00 Implications: the core is melting, not solidifying?


22:00 The geodynamo and magnetic field


23:00 The core: buffered at the temperature of melting high pressure iron


24:00 Magnetic modes diagram for the planets: spin and magnetic field