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The objective of this work is to diagnose high frequency acoustic propagation directly from oceanographic data and ocean models. To achieve this objective a joint acoustic and oceanographic experiment was performed in the Gulf of Mexico in the summer of 2008. This paper will show that high frequency acoustic propagation at 17.5 kHz tracks the estimated turbulent dissipation rate obtained from field...
A bulk-micromachined piezoelectric MEMS accelerometer with screen printed piezoelectric Pb(ZrxTi1-x)O3 (PZT) thick film (TF) as the sensing material has been fabricated and characterized. The accelerometer has a four beam structure with a central seismic mass (3600times3600times500 mum3) and a total chip size of 10times10 mm2. The resonance frequency is found to be 17.5 kHz and the sensitivity 4.15...
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