Results 221 to 230 of about 269,913 (265)

The velocity structure of the lunar crust

The Moon, 1973
Seismic refraction data, obtained at the Apollo 14 and 16 sites, when combined with other lunar seismic data, allow a compressional wave velocity profile of the lunar near-surface and crust to be derived. The regolith, although variable in thickness over the lunar surface, possesses surprisingly similar seismic properties.
Robert L. Kovach, Joel S. Watkins
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Phase Velocity in Resonant Structures

INTERMAG 2006 - IEEE International Magnetics Conference, 2006
We present a simple experimental procedure for testing of the phase-velocity behavior with respect to the effective material properties as demonstrated by the field dependent behavior of the metafilm. We have demonstrated that the phase-velocity behavior of an effective parameter material under different conditions, and have shown that a negative-phase
J. Baker-Jarvis, M.D. Janezic, D. Love, T.M. Wallis, C.L. Holloway, P. Kabos   +5 more
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Crust Velocity Structure of Bushehr

Proceedings, 2015
In this study, to reduce the maximum gap azimuth and locate earthquakes more accurately, the data recorded by the seismic network stations in Saudi Arabia have been used. 115 aftershocks that were reliably located were applied to calculate the velocity structure of the crust model by one-dimensional inversion method, also P-wave velocity and thickness ...
M. Kazemnia Kakhki, M. Ansaripour
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Transient-velocity gage for structures

Experimental Mechanics, 1966
A compact gage has been developed to measure transient velocities up to about 600 cm/sec. The design is based on the principle of a highly overdamped seismic oscillator. Frequency response of the gage is flat from 1 to 500 cps. The gage can be used at any inclination and measures the velocity component along one axis only unaffected by crosswise motion.
E. G. Chilton, T. D. Witherly
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On the Structure of the Low Velocity Zone

Geophysical Journal International, 1973
Summary Body wave observations from large nuclear explosions at the Nevada Test Site have been used to model the P-velocity and Q structure along the top of the mantle. The amplitudes of short period waves in the range 1–4 degrees and 12–35 degrees indicate substantial absorption in the low velocity zone with Qα. of the order of 50.
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Structure independent velocity estimation

Geophysics, 1976
Abstract Many commonly used velocity estimation procedures assume that the reflectors are horizontal. Because of this, their performance tends to degrade as the reflectors become curved or discontinuous. Much of this degradation can be traced to the fact that data recorded over nonhorizontal reflectors need not resemble in detail the ...
S. M. Doherty, J. F. Claerbout
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Horizontal Velocity Structure in Waterspouts

Journal of Applied Meteorology, 1981
Abstract We have measured the spatial variation of a single horizontal component of the velocity in a number of waterspouts using an airborne infrared Doppler lidar. In 21 data sets, maximum velocities range from 4.2 to 33.6 m s−1 and visible funnel diameters from 6.6 to 90 m.
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A velocity structure of the Earth's core

Bulletin of the Seismological Society of America, 1971
abstract Travel times and amplitudes of PKP, P2KP and higher multiple K phases are determined from a worldwide distribution of short-period seismograms. The sources are one explosion in Novaya-Zemlya and seven earthquakes, consisting of one intermediate focus event in the New Hebrides, and deep-focus events in Fiji, Java, Kermadec ...
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Structural Aspects of Money Velocity

The Quarterly Journal of Economics, 1959
I. Concepts of money velocity, 429. — II. Factors responsible for secular and cyclical changes in transactions velocity, 433. — III. Influence of changes in the pattern of ownership of demand deposits on money velocity, 437. — IV. Influence of changing composition of payment flows on deposit velocity, 440. — V.
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Velocity Structure of the Benthic Ocean

Journal of Physical Oceanography, 1982
Abstract Velocity measurements in the outer part of the bottom boundary layer on the Hatteras Abyssal Plain are examined for indicators of boundary-layer turbulence. Velocity fluctuations in two frequency bands, near-inertial and high-frequency (1–4 cph), display mixed-layer signatures.
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