ESS102H1 Lecture Notes - Megathrust Earthquake, Plate Tectonics, Convergent Boundary
Document Summary
Subduction: a process that takes place at convergent boundaries by which one tectonic plate moves under another tectonic plate. Energy: energy (in the form of stored elastic strain) builds up along a subduction zone fault, to be released during an earthquake. The result of a sudden release of energy in the earth"s crust that creates seismic waves. Megaquake: a very powerful earthquake, generally with a richter scale value exceeding 7. Recurrence interval: an estimate of the interval of time between events like earthquakes. A statistical measurement showing the average recurrence interval over an extended period of time. The energy is released between two tectonic plates where one plate slides underneath the other. The build up of strain surpasses the friction between the two plates. The boundaries of tectonic plates are formed by faults. The continued fault slips over time along with seismic tremors are the result of released energy. Magnitude around 8 or 9: how does gps detect.
