| Title | A review of inverse methods in seismic site characterization |
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| Author | Gosselin, J; Dosso, S E; Askan, A ; Wathelet, M; Savvaidis, A; Cassidy, J F |
| Source | 2022 p. 1-41, https://doi.org/10.1007/s10950-021-10047-8  Open Access |
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| Year | 2022 |
| Alt Series | Natural Resources Canada, Contribution Series 20200797 |
| Publisher | Springer |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Subjects | Health and Safety; tectonics; earthquakes; earthquake damage; earthquake studies; health hazards; seismic waves |
| Illustrations | schematic models; figures; graphs; tables; frequency distribution diagrams |
| Program | Public Safety Geoscience Assessing Earthquake Geohazards |
| Released | 2022 04 19 |
| Abstract | Seismic site characterization attempts to quantify seismic wave behavior at a specific location based on near-surface geophysical properties, for the purpose of mitigating damage caused by earthquakes.
In recent years, techniques for estimating near-surface properties for site characterization using geophysical observations recorded at the surface have become an increasingly popular alternative to invasive methods. These observations include
surface-wave phenomenology such as dispersion (velocity-frequency relationship) as well as, more recently, full seismic waveforms. Models of near-surface geophysical properties are estimated from these data via inversion, such that they reproduce the
observed seismic observations. A wide range of inverse problems have been considered in site characterization, applying a variety of mathematical techniques for estimating the inverse solution. These problems vary with respect to seismic data type,
algorithmic complexity, computational expense, physical dimension, and the ability to quantitatively estimate the uncertainty in the inverse solution. This paper presents a review of the common inversion strategies applied in seismic site
characterization studies, with a focus on associated advantages/ disadvantages as well as recent advancements. |
| Summary | (Plain Language Summary, not published)
This invited review article provides an overview of the variety of "inversion techniques" that are used to take a dataset and create a realistic
near-surface earth model (with uncertainties). In addition to reviewing the most commonly used, and the most recent methodologies, we describe the advantages and disadvantages of each, and under which conditions they are most useful. The near-surface
earth model (shear-wave velocity) is a key parameter required for earthquake site hazard characterization. |
| GEOSCAN ID | 328197 |
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