Plate Kinematics – studying how tectonic plates move and deform

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Presentation transcript:

Plate Kinematics – studying how tectonic plates move and deform

Finding Euler poles Transform faults Spreading center rates Slip vectors from earthquakes along the boundary Geodetic measurements (GPS, VLBI)

Euler poles JF North America Pacific CA Cocos South America Nazca

Plate Motion Model Results

“Geological” Global Plate Motion Model plate boundaries DeMets et al., 1991

GPS measurement of plate motions Mid-plate - Poland Near Plate Boundary – Fairbanks Alaska Prawirodirdjo & Bock, 2004

North American Plate Deformation from GPS Sella et al., 2007

Very Long Baseline Interferometry (VLBI) Distance between Massachusetts and Germany

Geodetic Plate Motion Model plate boundaries

Comparison of “Geological” and Instantaneous Results

The search for a plate motion reference frame – Hotspots?

Defining the Hotspot Reference Frame

Global plate motions wrt “hotspot reference frame”

No-net rotation plate motion model Argus et al., 2011