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Data acquisition and processing at ocean bottom for a Tsunami warning system

Sreelal, S and Jose, Smitha and Varghese, Bibin and Suma, MN and Sumathi, R and Lakshminarayana, M and Nayak, MM (2014) Data acquisition and processing at ocean bottom for a Tsunami warning system. In: MEASUREMENT, 47 . pp. 475-482.

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Official URL: http://dx.doi.org/10.1016/j.measurement.2013.09.03...


The design and development of a Bottom Pressure Recorder for a Tsunami Early Warning System is described here. The special requirements that it should satisfy for the specific application of deployment at ocean bed and pressure monitoring of the water column above are dealt with. A high-resolution data digitization and low circuit power consumption are typical ones. The implementation details of the data sensing and acquisition part to meet these are also brought out. The data processing part typically encompasses a Tsunami detection algorithm that should detect an event of significance in the background of a variety of periodic and aperiodic noise signals. Such an algorithm and its simulation are presented. Further, the results of sea trials carried out on the system off the Chennai coast are presented. The high quality and fidelity of the data prove that the system design is robust despite its low cost and with suitable augmentations, is ready for a full-fledged deployment at ocean bed. (C) 2013 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Publication: MEASUREMENT
Additional Information: copyright for this article belongs to ELSEVIER SCI LTD,ENGLAND
Keywords: Bottom Pressure Recorder; Tsunami Early Warning System; Data acquisition; Data processing; Detection algorithm
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Date Deposited: 06 Jan 2014 10:26
Last Modified: 06 Jan 2014 10:26
URI: http://eprints.iisc.ac.in/id/eprint/48134

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