ZIP Buzz

Presenting ZIP

Short video by the project coordinator Philippe Agard (UPMC Paris, France) explaining what the interdisciplinary ZIP approach is to constrain the nature of the subduction plate interface and progress towards a better risk assessment.

Seamount subduction

3D view of the damage induced by a seamount, as it travels along the plate interface on its way to the deep earth, to the overlying tectonic plate.

Rock densities

Short video explaining changes in the rock density during subduction and dehydration.

A viscoelastic 3D model of a subduction earthquake

This is an introductory video to finite element modeling where you will see a simulation of an earthquake occurring in the contact between Nazca and South American plates (Maule 2010 Mw8.8).
The video, containing a simple description of how a 3D model is built, goes trough important geophysical concepts as lithosphere, asthenosphere, mantle, coseismic displacement, among others, which are explained in a brief and entertaining way!
By Gianina Meneses P. (École Normale Supérieure Paris, France)

Earthquake magnitudes

Short video explaining jumps in magnitude… with pasta (prime explanations by an Italian ZIP fellow!).

Travel-time modeling of active seismic data

Inversion of marine wide-angle seismic data for a profile of the subduction zone in North Chile. For the initial model the trajectories of different seismic phases are traced between sources and seismometers. Their arrival times are calculated and compared to observed times. The model is iteratively adjusted to minimize this travel-time difference. The final 2D seismic velocity model is obtained after wanted fit is achieved.
By Slaven Begovic (Institut de Ciències del Mar – CSIC, Barcelona, Spain)

ZIP webinar with AF consult

ZIP webinar with AF consult’s Thomas Kaempfer on numerical modelling of water resources.

ZIP Private sector miniworkshops & entrepreneurship: IFP-EN

Micro-CT analysis of D-DIA experiment with blueschist powder

The micro-CT video shows how a sample looks like after a deformation experiment. You can see that there are cracks crosscutting the sample. We suppose that these cracks formed due to the growth of the new mineral.

Diffractogram evolution during a D-DIA experiment with blueschist powder

The video of the diffratograms shows that there is a new ring appearing, which means a new mineral growing at the end of the experiment shown in this video: