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Calculated velocity field near the surface

Near surface shear wave velocity in Bucharest, Romania

Near surface shear wave velocity in Bucharest, Romania

... To understand and mitigate the earthquake risk for Bucharest, a major effort was made over the last 12 years by the Collaborative Research Centre 461 at the Univer- sit¨at Karlsruhe (TH), Germany and the Romanian Group ...

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The physics of high-velocity ions in the Hall thruster near-field

The physics of high-velocity ions in the Hall thruster near-field

... To be able to link the internal and far-field codes, one needs a strong understanding of the missing piece of the plasma physics puzzle, i.e., the mechanisms that govern plasma behavior within the ...

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Near field/far field interface of a near surface low level radioactive waste site

Near field/far field interface of a near surface low level radioactive waste site

... $%675$&7 Experimental and Modelling studies have been used to investigate the biogeochemical processes occurring at the interface zone between the near-field and far-field of the Drigg Low- Level ...

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A study on the near field interactions of ultrasonic surface waves with surface breaking defects

A study on the near field interactions of ultrasonic surface waves with surface breaking defects

... eration, both for the material under test and for the operator themselves. Safe operation of laser inspection equipment in a laboratory environment requires the use of protective filtered glasses of a rating appropriate ...

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Particle Velocity Sensor and Its Application in Near Field Noise Scanning Measurement

Particle Velocity Sensor and Its Application in Near Field Noise Scanning Measurement

... directly calculated from the sound pressure and acoustic particle velocity using P-U ...ticle velocity and sound intensity perform well in identifying noise ...the field of industrial noise ...

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Regulation of conduction velocity in axons from near field receptors of the crayfish antennule

Regulation of conduction velocity in axons from near field receptors of the crayfish antennule

... of near-field receptors, termed standing feathered sensilla, that are extremely sensitive to movement of the surrounding ...conduction velocity of the sensory neuron pair associated with each ...

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Near-field Microwave Microscopy for Surface and Subsurface Characterization of Materials

Near-field Microwave Microscopy for Surface and Subsurface Characterization of Materials

... Measurements consisted of 1-D scan profiles of phase change of the probe versus Y-distance showing the presence of the Aluminum box when it was immersed from 1 mm to 4 mm. Before proceeding further with the background ...

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Magnetic Field Based Near Surface Haptic and Pointing Interface

Magnetic Field Based Near Surface Haptic and Pointing Interface

... Vibration sensations are provided by setting up neodymium magnet and magnetic array in a like polarity position and then rapidly switching on and off the electromag- netic array in certain frequencies. This rapid ...

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An experimental study of solid particle motion near the pipe wall in a turbulent velocity field

An experimental study of solid particle motion near the pipe wall in a turbulent velocity field

... trajectory near the pipe wall, the axial region over which pictures would be taken was decreased from two inches to one ...data near the pipe ...axial velocity at y+=30 would be hit by the center of ...

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Near surface Seismic Velocity Model Building from First Arrival Travel times   A Case Study from an Onshore, Niger Delta Field

Near surface Seismic Velocity Model Building from First Arrival Travel times A Case Study from an Onshore, Niger Delta Field

... the field which is a challenging area for onshore seismic exploration because of rapid topographic ...The field is in a swampy terrain with complex surface conditions which unavoidably introduced ...

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Lamb wave near field enhancements for surface breaking defects in plates

Lamb wave near field enhancements for surface breaking defects in plates

... Abstract. Near eld surface wave ultrasonic enhancements have previously been used to detect surface breaking defects in thick samples using Rayleigh ...analogous surface wave enhancements for ...

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Exploring surface wave interaction with angled defects in the near and far field

Exploring surface wave interaction with angled defects in the near and far field

... samples. Surface defects can often propagate at an angle to the surface; however, for calibration, slots machined normal to the surface of the sample are typically ...angled surface defects, ...

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Temporal change of near surface shear wave velocity associated with rainfall in Northeast Honshu, Japan

Temporal change of near surface shear wave velocity associated with rainfall in Northeast Honshu, Japan

... wave velocity in upper crust (free surface to several kilometers depth) caused by precipitation, and their results can be interpreted by hydrological models of crustal fluid pore pressure in upper crust or ...

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Influential Factors Analysis of Full Waveform Inversion In Time Domain For Near-Surface Velocity Modeling

Influential Factors Analysis of Full Waveform Inversion In Time Domain For Near-Surface Velocity Modeling

... of velocity interface is better, in addition the perturbations of updated velocity was ...updated velocity is ...updated velocity more accurate and make the result much ...updated ...

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Comparison of Compressional-wave Velocity-depth Profiles from Surface and Downhole Detectors in the Near Surface in the Southeast Niger Delta, Nigeria

Comparison of Compressional-wave Velocity-depth Profiles from Surface and Downhole Detectors in the Near Surface in the Southeast Niger Delta, Nigeria

... the surface-wave and downhole methods. The surface-wave method gives spatially-averaged velocities along the line of traverse coincident with the geophone ...by surface-detector method are more ...

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Seismic Full-Waveform Inversion of 3D Field Data – From the Near Surface to the Reservoir

Seismic Full-Waveform Inversion of 3D Field Data – From the Near Surface to the Reservoir

... FWI velocity model recovered using a frequency-domain algorithm with 240 iterations and 1000 ...FWI velocity model recovered using a frequency-domain algorithm with 240 iterations and 500 ...FWI ...

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Near field surface plasmon effects on Au double slit diffraction for polychromatic light

Near field surface plasmon effects on Au double slit diffraction for polychromatic light

... Abstract The surface plasmon effects on near-field diffraction for polychromatic light are studied. An Au-double-slit is used as the model and Fresnel integral is employed to perform the theoretic ...

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Measurement of the Bridge Surface Deflections Using Near-Field Amplitude of Secondary Radiators System

Measurement of the Bridge Surface Deflections Using Near-Field Amplitude of Secondary Radiators System

... measuring surface deflection of bridges and other large objects were discussed in the ...electromagnetic field amplitude which can be obtained from systems of secondary (passive) radiators (reradiators) or ...

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Handbook for Surface Flow Velocity Measurement

Handbook for Surface Flow Velocity Measurement

... Acquisition of real-time hydraulic data is an essential component for flood forecasting. However, we frequently face difficulties in obtaining discharge data using classical contact methods during high magnitude floods ...

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Handbook for Surface Flow Velocity Measurement

Handbook for Surface Flow Velocity Measurement

... Abstract Acquisition of real-time hydraulic data is an essential component for flood forecasting. However, we frequently face difficulties obtaining discharge data using classical contact methods during high magnitude ...

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