NDLI: A new type of directional wave module to extend UK Smart Buoy measurement capabilities

Content Provider	IEEE Xplore Digital Library
Author	Earle, M.D. Rawlinson, M.B. Mills, D.K. Pearce, D.J.
Copyright Year	2002
Description	Author affiliation: Neptune Sci. Inc, Slidell, LA, USA (Earle, M.D.)
Abstract	To address the growing need for high frequency real-time data for effective monitoring and assessment of nutrient inputs and ecosystem response, Smart Buoy has been developed in the United Kingdom (UK). A number of the buoys have been deployed by the Centre for Environment, Fisheries and Aquaculture Science (CEFAS) in the southern North Sea. The buoy carries a unique instrument payload including in-situ nutrient analyzers, chemical sensors, and a plankton/water sampler along with an array of bio-optical sensors. To date, collected meteorological and physical oceanographic data have been limited to standard meteorological data, high precision salinity and temperature measurements, and suspended load data. Smart Buoy utilizes a 1.9 m outside diameter toroid hull with a structural frame that extends approximately 3 m above the water surface and somewhat over 1 m beneath the water surface depending on a buoy's configuration and sensor suite. An intelligent data acquisition and control unit employs distributed data acquisition techniques to acquire data from several linked autonomous sub-modules. Doing this makes the system robust and able to withstand even catastrophic failures of modules. Data telemetry is by radio or satellite. To fully characterize the physical environment that acts as a driver for the biological and chemical environment, a new Directional Wave Module (DWM) has been developed as a module for Smart Buoy. With DWMs, the buoys can also be better used for marine weather monitoring. The central controller design approach facilitates the optional addition of the DWM to particular buoys. The module has two small components, a self-contained underwater pressure housing with data acquisition and processing electronics as well as buoy motion sensors and a superstructure-mounted three axis magnetometer. So that the DWM can be used with differently configured buoys, data are processed optionally by either a wave particle following or a wave slope following approach. Data acquisition and analysis approaches follow state-of-the-art procedures. Real-time directional wave spectra, and resultant wave height, period, and direction parameters, are transferred to the Smart Buoy controller by serial interface for relay to shore. The controller, or optionally the DWM, also stores buoy motion time series data in high-capacity non-volatile memory for possible re-analyses for special applications. The DWM has been tested by wave simulations. Results from a major UK field inter-comparison will be available soon. The DWM is a new type of intelligent wave sensor that may be used with virtually any buoy hosting a main controller or buoy system that utilizes a serial input.
Starting Page	413
Ending Page	416
File Size	382814
Page Count	4
File Format	PDF
ISBN	0780375343
DOI	10.1109/OCEANS.2002.1193307
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intelligent sensors Data acquisition Monitoring Aquaculture Sensor arrays Meteorology Sea surface Ocean temperature Sea measurements Frequency
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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