Terrestrial Planets 1.Earth as a planet: interior & tectonics. 2.Dynamics of the mantle 3.Modeling terrestrial planets.

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Presentation transcript:

Terrestrial Planets 1.Earth as a planet: interior & tectonics. 2.Dynamics of the mantle 3.Modeling terrestrial planets

The Formation of the Earth Precise timeline of early events using U/Pb and Hf/W isotope chronometers. Jacobsen (2003)

The Formation of the Earth Asteroid Itokawa might resemble the clumps that agglomerated to form the Earth & planets

The Formation of the Moon Canup & Asphaug (2001)

Earth as a planet - interior

Earth interior - seismic waves

Earth interior - seismic surface waves

Earth interior Modes of propagation of P-waves and S-waves: Terminology: SS = S-waves reflected at surface PP = P-waves reflected at surface PCP = P-waves reflected at CMB PKP = P-waves refracted in core CMB = core-mantle boundary

Earth interior

Earth as a planet - tectonics

Earth - plate mobility

Earth as a planet - tectonics

Earth - plate collision & subduction Kustowski et al.(2006) Evidence from seismic tomography for the subduction of the plate under Japan. Variations in shear-wave velocity, v S

Earth - plate collision

Earth as a planet - tectonics

Earth mantle convection simulation Labrosse & Sotin (2002)

Earth interior - mantle plumes

Earth interior - cooling

Earth as a planet