Tsunami generation: a comparison of traditional and normal mode approaches

Autor:	Robert P. Comer
Rok vydání:	1984
Předmět:	Coupling Mathematical analysis Space (mathematics) Physics::Geophysics Superposition principle Geophysics Geochemistry and Petrology Normal mode Point (geometry) Boundary value problem Equivalence (measure theory) Seabed Seismology Geology
Zdroj:	Geophysical Journal International. 77:29-41
ISSN:	1365-246X 0956-540X
DOI:	10.1111/j.1365-246x.1984.tb01924.x
Popis:	Suxmary. Techniques to model tsunami generation by earthquakes may be divided into two broad categories, according to whether the ocean and solid earth are fully or partially coupled. The former category includes normal mode techniques while the latter is comprised of more Qraditional approaches, including those in which the hydrodynamic equations for the ocean are solved subject to an inhomogeneous time-dependent boundary condition at the ocean floor. We compare representatives of each approach, using a solution for the flat earth tsunami mode excitation due to a point moment tensor earthquake source and a more traditional model in which the ocean floor boundary condition is derived from the static response of an elastic half- space to a point moment tensor. The results are nearly identical and extend to finite sources according to linear superposition, thus establishing the practical equivalence of the two conceptually divergent techniques and assuring the general validity of models with partial coupling.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4a76b3e92a0cb3607c40866059ff32ee https://doi.org/10.1111/j.1365-246x.1984.tb01924.x Zobrazit plný text záznamu Plný text