Abstract
Almost all earthquakes are tectonic; they originate as a fracture at a point in the Earth’s interior called the focus; the nearest surface point is the epicenter. The break is then propagated along the surface of a fault. Determinations of epicenters and depths of focus are carried out regularly in various institutions, such as the Buremu Central Sismologique of Strasbourg, using the times of arrival of the seismic waves at several hundreds of stations more or less well distributed around the world.
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© 1972 D. Reidel Publishing Company, Dordrecht-Holland
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Coulomb, J. (1972). Seismic Geography and Ocean Bathymetry. In: Sea Floor Spreading and Continental Drift. Geophysics and Astrophysics Monographs, vol 2. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-2899-8_1
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DOI: https://doi.org/10.1007/978-94-010-2899-8_1
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-277-0238-8
Online ISBN: 978-94-010-2899-8
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