Academic Year 2020/2021 - 1° Year

9 CFU - 2° Semester

**SISMOLOGIA**The main objective of the course is to provide students with basic knowledge of earthquake physics, the effects of earthquakes and seismic risk assessment. The main knowledge acquired will be:

- theory of earthquake physics

- theoretical base on the concept of risk and in particular of seismic risk.

The main skills will be:

- ability to critically evaluate seismic processes and their associated hazard/risk;

- synthesis ability and the use of appropriate technical-scientific language.

**SISMOLOGIA**Frontal lectures will be held.

Should teaching be carried out in mixed mode or remotely, it may be necessary to introduce changes with respect to previous statements, in line with the programme planned and outlined in the syllabus.

Learning assessment may also be carried out on line, should the conditions require it.

**SISMOLOGIA**Introductory concepts: scalar product, vector product, gradient, divergence, curl, seismogram, analog-digital conversion, spectral analysis, convolution, filters.

Stress and strain: stress tensor, strain tensor, elastic modules, Lamé constants.

Elastic waves: wave equation, body waves, surface waves, Huygens and Fermat principles, Snell's law, Zoeppritz-Knott equations, reduction of seismic amplitude with propagation, diffraction, normal modes.

Earthquake source: elastic rebound, seismic cycle, focal mechanisms, moment tensor, source spectra, stress drop.

Earthquake size: definition of magnitude, magnitude of local events, magnitude of distant events, saturation of magnitude, moment magnitude, energy, intensity.

Hypocentral location: single station, multiple stations, relative locations.

Instruments: frequency response, site and instrument selection and relative installation.

Earthquakes and statistics: Gutenberg-Richter's law, Omori's law, Bath's law.

Particular types of seismicity: induced, CTBTO, planetary, volcanic.

Earthquake prediction and stress transfer: earthquake cycle, precursors, static stress, dynamic stress.

Seismic risk: hazard, vulnerability, exposure, risk, multirisk, seismic microzonation.

**SISMOLOGIA**- Stein, S., Wysession, M. (2003). An Introduction to Seismology, Earthquakes, and Earth Structure. Blackwell Publishing.
- Shearer, P. M. (2011). Introduction to Seismology, 2nd edition. Cambridge.
- Lay, T., Wallace, T.C. (1995). Modern Global Seismology. Academic Press.
- Treatise of Geophysics, 2nd edition (2015). Elsevier.
- Kramer, A.L. (1996). Geotechnical Earthquake Engineering. Prentice Hall College.
- New Manual of Seismological Observatory Practice (NMSOP-2). http://bib.telegrafenberg.de/publizieren/vertrieb/nmsop/
- Havskov, J., Ottemoller, L. (2010). Routine Data Processing in Earthquake Seismology. Springer.
- Kearey et al. (2002). An Introduction to Geophysical Exploration. Blackwell Editore.
- Notes.