The Experts below are selected from a list of 114123 Experts worldwide ranked by ideXlab platform
L. Rivera - One of the best experts on this subject based on the ideXlab platform.
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Prograde Rayleigh wave Particle Motion
Geophysical Journal International, 2005Co-Authors: Toshiro Tanimoto, L. RiveraAbstract:SUMMARY Fundamental mode Rayleigh waves generally show retrograde Particle Motion at the surface of the Earth. If there exists a thick sedimentary layer, however, reversal of the sign of vertical eigenfunction occurs near the surface, resulting in prograde Rayleigh-wave Particle Motion at the surface. We show that, for structures similar to those found in the Los Angeles basin (with thickness up to 8 km), surface prograde Motion may occur within the frequency band 0.05‐ 0.3 Hz. Although it has been suggested that the effect of gravity on waves in unconsolidated surface layer may be important, partitioning of energy between the elatic and gravitational energy shows that the gravitational energy is less than 1 per cent and thus is not important. The phenomenon is caused by elastic effects, mainly caused by extremely slow shallow seismic velocities. Observation of prograde elliptical Particle Motion may be difficult, however, because Particle Motion is largely horizontal and high microseismic noise exists in the same frequency band.
Toru Taniuchi - One of the best experts on this subject based on the ideXlab platform.
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Acoustic pressure sensitivities and effects of Particle Motion in red sea bream Pagrus major
Fisheries Science, 2009Co-Authors: Takahito Kojima, Tomohiro Suga, Akitsu Kusano, Saeko Shimizu, Haruna Matsumoto, Shinichi Aoki, Noriyuki Takai, Toru TaniuchiAbstract:The auditory pressure thresholds of red sea bream were examined using cardiac response in the field by placing fish subjects far from the sound source to prevent Particle Motion. Pressure and Particle Motion thresholds were also obtained using the auditory brainstem response (ABR) technique. The thresholds at 100 and 200 Hz were significantly higher when measured using the cardiac response in the far field than those obtained in previously conducted experiments in experimental tub. However, thresholds obtained using ABR from 200 to 500 Hz were not remarkably lower, although significantly different (0.01 < P < 0.05), compared with those obtained using cardiac response in the far field. Furthermore, calculated Particle velocity thresholds indicated that fish probably detected Particle Motion within the frequency range of 50–200 Hz, even in fish with a deactivated lateral line. Although the ABR method is widely applied in fish auditory study, hearing thresholds are apparently affected by Particle Motion.
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Acoustic pressure sensitivities and effects of Particle Motion in red sea bream Pagrus major
Fisheries Science, 2009Co-Authors: Takahito Kojima, Tomohiro Suga, Akitsu Kusano, Saeko Shimizu, Haruna Matsumoto, Shinichi Aoki, Noriyuki Takai, Toru TaniuchiAbstract:The auditory pressure thresholds of red sea bream were examined using cardiac response in the field by placing fish subjects far from the sound source to prevent Particle Motion. Pressure and Particle Motion thresholds were also obtained using the auditory brainstem response (ABR) technique. The thresholds at 100 and 200 Hz were significantly higher when measured using the cardiac response in the far field than those obtained in previously conducted experiments in experimental tub. However, thresholds obtained using ABR from 200 to 500 Hz were not remarkably lower, although significantly different (0.01
R. C. Sinkwitz - One of the best experts on this subject based on the ideXlab platform.
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Particle Motion simulation: a parallel distributed workstation application for real-time
Future Generation Computer Systems, 1992Co-Authors: R. C. SinkwitzAbstract:Abstract Particle Motion simulation subdivides graphical objects into a set of small Particles behaving according to specific rules. Real-time Particle Motion simulation makes it possible to simulate natural phenomena like smoke or Brownian Motion for demonstration and verification purposes. The paper describes how the enormous computational requirements can be solved using distributed parallel computation on a set of workstations.
Toshiro Tanimoto - One of the best experts on this subject based on the ideXlab platform.
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Prograde Rayleigh wave Particle Motion
Geophysical Journal International, 2005Co-Authors: Toshiro Tanimoto, L. RiveraAbstract:SUMMARY Fundamental mode Rayleigh waves generally show retrograde Particle Motion at the surface of the Earth. If there exists a thick sedimentary layer, however, reversal of the sign of vertical eigenfunction occurs near the surface, resulting in prograde Rayleigh-wave Particle Motion at the surface. We show that, for structures similar to those found in the Los Angeles basin (with thickness up to 8 km), surface prograde Motion may occur within the frequency band 0.05‐ 0.3 Hz. Although it has been suggested that the effect of gravity on waves in unconsolidated surface layer may be important, partitioning of energy between the elatic and gravitational energy shows that the gravitational energy is less than 1 per cent and thus is not important. The phenomenon is caused by elastic effects, mainly caused by extremely slow shallow seismic velocities. Observation of prograde elliptical Particle Motion may be difficult, however, because Particle Motion is largely horizontal and high microseismic noise exists in the same frequency band.
Takahito Kojima - One of the best experts on this subject based on the ideXlab platform.
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Acoustic pressure sensitivities and effects of Particle Motion in red sea bream Pagrus major
Fisheries Science, 2009Co-Authors: Takahito Kojima, Tomohiro Suga, Akitsu Kusano, Saeko Shimizu, Haruna Matsumoto, Shinichi Aoki, Noriyuki Takai, Toru TaniuchiAbstract:The auditory pressure thresholds of red sea bream were examined using cardiac response in the field by placing fish subjects far from the sound source to prevent Particle Motion. Pressure and Particle Motion thresholds were also obtained using the auditory brainstem response (ABR) technique. The thresholds at 100 and 200 Hz were significantly higher when measured using the cardiac response in the far field than those obtained in previously conducted experiments in experimental tub. However, thresholds obtained using ABR from 200 to 500 Hz were not remarkably lower, although significantly different (0.01 < P < 0.05), compared with those obtained using cardiac response in the far field. Furthermore, calculated Particle velocity thresholds indicated that fish probably detected Particle Motion within the frequency range of 50–200 Hz, even in fish with a deactivated lateral line. Although the ABR method is widely applied in fish auditory study, hearing thresholds are apparently affected by Particle Motion.
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Acoustic pressure sensitivities and effects of Particle Motion in red sea bream Pagrus major
Fisheries Science, 2009Co-Authors: Takahito Kojima, Tomohiro Suga, Akitsu Kusano, Saeko Shimizu, Haruna Matsumoto, Shinichi Aoki, Noriyuki Takai, Toru TaniuchiAbstract:The auditory pressure thresholds of red sea bream were examined using cardiac response in the field by placing fish subjects far from the sound source to prevent Particle Motion. Pressure and Particle Motion thresholds were also obtained using the auditory brainstem response (ABR) technique. The thresholds at 100 and 200 Hz were significantly higher when measured using the cardiac response in the far field than those obtained in previously conducted experiments in experimental tub. However, thresholds obtained using ABR from 200 to 500 Hz were not remarkably lower, although significantly different (0.01
