Seismic risk / S. T. Algermissen.

Format:

Video

Author/Creator:

Algermissen, S. T., author.

Series:

McGraw-Hill's AccessScience.

McGraw-Hill's AccessScience

Language:

English

Subjects (All):

Earthquake engineering.

Earthquake hazard analysis.

Physical Description:

1 online resource : ill., figs., tables.

Place of Publication:

New York, N.Y. : McGraw-Hill Education LLC., 2020.

Language Note:

In English.

Summary:

The probability that social or economic consequences of earthquakes will equal or exceed specified values at a site, at several sites, or in an area, during a specified exposure time. Historically the term seismic risk has been used to describe an assortment of earthquake effects that range from ground shaking, surface faulting, and earthquake-induced landsliding to economic loss and casualties. As more quantitative methods for estimating the effects of earthquakes have been developed, terminology has become more precise. Although the term seismic risk is still sometimes used in a general sense to mean the potential for both the occurrence of natural phenomena and the economic and life loss associated with earthquakes, it is useful to differentiate between the concepts of seismic hazard and seismic risk. Seismic hazard may be defined as any physical phenomena (for example, ground shaking or ground failure) that are associated with an earthquake and that may produce adverse effects on human activities. The exposure time is the time period of interest for seismic hazard or risk calculations. In practical applications, the exposure time may be considered to be the design lifetime of a building or the length of time over which it is of interest to estimate numbers of casualties. For example, the risk that a certain number of casualties will occur is the probability associated with all combinations of seismic hazards that may result from the earthquakes and all possible numbers of casualties resulting from those hazards. in which P(Ri) is the probability that the state of the system is i, Sj means that the seismic hazard is level j, P(Sj) is the probability that seismic hazard is level j, and P(Ri|Sj) is the probability that the behavior state of the system will be Ri, given that seismic input, Sj, takes place. Thus, evaluation of seismic risk requires that the seismic hazard be specified.

Notes:

Originally produced by S. T. Algermissen in 2020.

Publisher Number:

10.1036/1097-8542.613000