5:30 PM - 5:45 PM
[J09-3-05] Different Application of Ultrasonic Underwater Particle-Tracing Probes at Deep Ocean Floor
Vertical or horizontal dislocations of the oceanic crust can provide some slow current changes at deep seafloor as an auxiliary pre-indicator of tsunami or earthquake.
The use of different forms of piezoelectric probes is an advanced method when performing particle motion and dimension analysis. Array based probes, for example, can measure density and velocity with directional item for suspended or drifting materials on the seabed. Their working capabilities are rather high, due to crystals' efficient trigger force at high pressure. Advantage of P-wave is observing ability to "sequentially hidden (or masked) particles" moving at the background. This is impossible for other methods based on such as light diffraction, conductivity or magnetic field sensing, under the presence of mass shadow effect. In fact, linear, differentiated linear, circular, spherical, concave shaped array forms are all possible in practice. The future design of spherical and "digitally driven and displaceable point source probes" may take time. The computer-controlled surface area of a displaceable point source can be devised for any given desired field scale. Suitable software can create artificially 'relatively portable and formed source field areas' from the transducer surface. Using three linear probes which would be along the main dimensional axes (magnetic north considered x,y,z) will consume three times higher energy than a single probe with separated sections on three axes; as it needs three interpreter circuits.
The scanning velocities of the probes have variability depending on the gaps between their piezoelectric crystals. In addition, sensor station's 'positioner flaps' cannot be efficient at low-velocity deep-currents because bio-foliation and corrosion decreases life time for accurate measuring of device by some friction problems on mechanical devices (positioner rudders). Spherical probes will particularly be the best particle observers with their non mechanised settings.
The use of different forms of piezoelectric probes is an advanced method when performing particle motion and dimension analysis. Array based probes, for example, can measure density and velocity with directional item for suspended or drifting materials on the seabed. Their working capabilities are rather high, due to crystals' efficient trigger force at high pressure. Advantage of P-wave is observing ability to "sequentially hidden (or masked) particles" moving at the background. This is impossible for other methods based on such as light diffraction, conductivity or magnetic field sensing, under the presence of mass shadow effect. In fact, linear, differentiated linear, circular, spherical, concave shaped array forms are all possible in practice. The future design of spherical and "digitally driven and displaceable point source probes" may take time. The computer-controlled surface area of a displaceable point source can be devised for any given desired field scale. Suitable software can create artificially 'relatively portable and formed source field areas' from the transducer surface. Using three linear probes which would be along the main dimensional axes (magnetic north considered x,y,z) will consume three times higher energy than a single probe with separated sections on three axes; as it needs three interpreter circuits.
The scanning velocities of the probes have variability depending on the gaps between their piezoelectric crystals. In addition, sensor station's 'positioner flaps' cannot be efficient at low-velocity deep-currents because bio-foliation and corrosion decreases life time for accurate measuring of device by some friction problems on mechanical devices (positioner rudders). Spherical probes will particularly be the best particle observers with their non mechanised settings.