What’s that noise? The multiple uses of Ambient Seismic Noise, Malta

19 May, 2016 | 17:45 - 23:00

Find out more about seismic noise and its effect.
Find out more about seismic noise and its effect.

About this event

Natural forces (ocean waves, wind, etc) and human activities are constantly impinging on the Earth's surface, causing it to vibrate with a spectrum of frequencies. This is known as ambient seismic noise.

Less than 20 years ago, this constant background vibration was considered by seismologists to be only a nuisance, because it reduced the clarity of earthquake signals, which were the main interest. Recently, however, it has been realised that this noise carries much information about the rocks through which it propagates, very similarly to the information carried in earthquake signals.

Unlike earthquakes, ambient noise is constantly present in large amounts and can be recorded anywhere.

This presentation will look at the nature of ambient noise, and the techniques being utilised by the Seismic Monitoring and Research Group to extract from the noise information about sub-surface structure, local site response to earthquake shaking, and the dynamic behaviour of Maltese buildings.

This is a free event open to the general public.

Brought to you by the Malta Group of Professional Engineering Institutions.


For more information and to book, please contact:

Elaine Vella
e: evella@camilleriandcuschieri.com


Dr Pauline Galea

Dr. Pauline Galea was awarded a Ph.D. in Geophysics by Victoria University of Wellington, New Zealand in 1994. She is currently Head of the recently established Department of Geosciences within the University's Faculty of Science. She is also coordinator of the Seismic Monitoring and Research group (SMRG).

The SMRG researches a number of seismology issues, such as seismic hazard and risk, sub-surface imaging, site response effects, seismicity, structure and tectonics of the Mediterranean, earthquake sources and historical seismicity.