DocumentCode :
1646311
Title :
Development, deployment, and operation of Kilo Nalu nearshore cabled observatory
Author :
Pawlak, G. ; De Carlo, E.H. ; Fram, J.P. ; Hebert, A.B. ; Jones, C.S. ; McLaughlin, B.E. ; McManus, M.A. ; Millikan, K.S. ; Sansone, F.J. ; Stanton, T.P. ; Wells, J.R.
Author_Institution :
Dept. of Ocean & Resources Eng., Univ. of Hawai´´i at Manoa, Honolulu, HI, USA
fYear :
2009
Firstpage :
1
Lastpage :
10
Abstract :
The Kilo Nalu Observatory, located on the south shore of the island of Oahu, supplies data and power connections to a suite of instruments over an array of stations extending from 12 to 20 m water depth which enable real-time extended time series observations, as well as individual user-specific interactive and automated experiments. The observatory power backbone includes a central distribution node at 12 m depth which controls DC power for up to four secondary nodes distributed across the reef; each node, in turn, provides isolated power for up to four experiment modules or `subnodes´. The shore cable also provides gigabit Ethernet data communications to the central node over optical fiber, with 100 Mb data bandwidth capability routed subsequently to each node. A monitoring system provides real-time diagnostic data on power system performance. Backbone data connections to remote nodes are achieved using underwater mate-able `micro-nodes´ that transmit Ethernet over fiber optic cable. Raw observational and diagnostic data are collected and archived at a shore station and transmitted via wireless link to the University of Hawai´i at Manoa campus where a database system provides products to a web interface (www.soest.hawaii. edu/OE/KiloNalu). Baseline observations include water currents and temperature versus depth, directional wave spectra, salinity, acoustic backscatter, turbidity, dissolved oxygen and chlorophyll fluorescence. Meteorological data is collected at the observatory´s shore station. Kilo Nalu is part of the broader Hawai´i Ocean Observing System (HIOOS), which includes observational and forecast components across the Hawaiian Islands.
Keywords :
data communication; oceanographic equipment; oceanography; power supplies to apparatus; DC power; array of stations; central distribution node; data and power connections; gigabit Ethernet data communications; nearshore cabled observatory; Communication cables; Ethernet networks; Instruments; Observatories; Optical fiber cables; Optical fibers; Power cables; Power supplies; Spine; Underwater cables;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
OCEANS 2009 - EUROPE
Conference_Location :
Bremen
Print_ISBN :
978-1-4244-2522-8
Electronic_ISBN :
978-1-4244-2523-5
Type :
conf
DOI :
10.1109/OCEANSE.2009.5278149
Filename :
5278149
Link To Document :
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