Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Anatoli L. Levshin"'
Publikováno v:
Journal of Seismology. 22:519-537
In recent years, surface wave seismology has become one of the leading directions in seismological investigations of the Earth’s structure and seismic sources. Various applications cover a wide spectrum of goals, dealing with differences in sources
Autor:
Michael H. Ritzwoller, Anatoli L. Levshin, Morgan P. Moschetti, M. P. Barmin, Carlos I. Mendoza
Publikováno v:
Geophysical Journal International. 191:671-685
SUMMARY The purpose of this study is to develop and test a modification to a previous method of regional seismic event location based on Empirical Green's Functions (EGFs) produced from ambient seismic noise. Elastic EGFs between pairs of seismic sta
Autor:
Vladimir Pinsky, M. P. Barmin, Nadezda Kraeva, Abraham Hofstetter, Anatoli L. Levshin, Tatiana Meirova
Publikováno v:
Journal of Seismology. 17:385-397
For the purpose of studying the Earth’s crust by means of tomography, we investigated cross-correlation functions emerging from long-term observations of propagating ambient seismic noise at pairs of broadband stations in Israel and Jordan. The dat
Publikováno v:
Geophysical Journal International. 184:869-884
SUMMARY A new method to locate the epicentre of regional seismic events is developed with strengths and limitations complementary to existing location methods. This new technique is based on applying empirical Green's functions (EGFs) for Rayleigh wa
Publikováno v:
Physics of the Earth and Planetary Interiors. 149:205-223
We discuss extending global surface wave diffraction tomography to accommodate major-arc dispersion measurements. The introduction of major-arc surface wave dispersion measurements improves path density and resolution in regions poorly covered by min
Publikováno v:
Geophysical Journal International. 160:961-972
SUMMARY We investigate the feasibility of observing crustal higher mode surface wave dispersion and applying these observations to improve estimates of crustal structure. Because crustal overtones propagate most efficiently and are excited best in re
Publikováno v:
GEOPHYSICS. 67:1991-2004
Accurate models of shear velocities in the shallow subsurface (p/Vsratios. We show how to obtain measurements of the traveltimes of these diverse and, in some cases, dispersive waves and how they are used in the MWI method to estimate shallow shear v
Publikováno v:
Studia Geophysica et Geodaetica. 46:283-292
Accurate location of weak seismic events is crucial for monitoring clandestine nuclear tests, for studying local seismic structures, and for assessing possible seismic hazards. Outside of a few regions with dense seismic networks, weak seismic events
Publikováno v:
Journal of Geophysical Research: Solid Earth. 106:30645-30670
We present and discuss a new model of the crust and upper mantle at high southern latitudes that is produced from a large, new data set of fundamental mode surface wave dispersion measurements. The inversion for a 2°×2° shear velocity model breaks
Publikováno v:
Pure and Applied Geophysics. 158:1351-1375
— We describe a method to invert regional or global scale surface-wave group or phase-velocity measurements to estimate 2-D models of the distribution and strength of isotropic and azimuthally anisotropic velocity variations. Such maps have at leas