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Integrated Coastal Observation Network (ICON) for real-time monitoring of sea-level, sea-state, and surface-meteorological data

DRS at CSIR-National Institute of Oceanography

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Title Integrated Coastal Observation Network (ICON) for real-time monitoring of sea-level, sea-state, and surface-meteorological data
 
Creator Desai, R.G.P.
Joseph, A.
Agarvadekar, Y.
Mehra, P.
VijayKumar, K.
Luis, R.
 
Subject Coastal Observation Network
Integrated Coastal Observation Network
sea-level
meteorological conditions
network time protocol
 
Description National Institute of Oceanography (NIO), Goa, India has established an Integrated Coastal Observation Network (ICON) of in-house designed and developed Internet-accessible real/near-real time reporting cellular based sea-level, sea-state, and surface meteorological (Met) stations at several locations on the Indian coasts and Islands (http://inet.nio.org). Subsurface pressure sensors and downward-looking microwave radars are incorporated in the sea-level station network. Sea-level, Met, and surface wave parameters are acquired using dedicated Linux based data loggers and uploaded to an Internet server at 5-, 10- and 30-min intervals, respectively with the use of GPRS cellular modems. The sensors and data loggers are powered from sealed lead acid batteries, which are charged through solar panels. The ICON provides graphical presentation of sea-level information (observed sea-level, predicted tide, residual sea-level); significant wave height and wave direction; and Met information (vector-averaged wind speed and direction, barometric pressure, atmospheric temperature, solar radiation, relative humidity, and rainfall). Installation of sea-level sensors free from the influence of stilling-wells and long narrow tubes renders the measurements ideal for tsunami and storm-surge studies by preventing waveform distortion and non- linearity of largeamplitude short-period signals. The network maintains accurate time-stamp of the dataset through Internet-time synchronization using network time protocol (NTP). Real-time reporting capability of ICON yields several benefits, such as (i) remote monitoring of proper working condition of individual stations; (ii) implementation of repair/maintenance in the shortest possible time, thereby minimizing break in the time-series data stream; (iii) periodic arrival of data stream from all stations at a single central server, thus yielding backup for the data from all the stations; (iv) access to the latest in-situ information; (v) allows possible use of data with automated real-time running numerical models for operational forecast. In contrast to the limited bandwidth provided by INSAT transmitters, coastal observations at high bandwidth at significantly low cost have become realizable using cellular GPRS network. The NIO-network allows, Internet based real/near-real time tracking and monitoring of sea-level, sea-state, and meteorological conditions along the Indian coasts and islands and from almost anywhere - _ an issue of considerable practical significance during natural disasters such as storm, storm-surge, and tsunami
 
Date 2010-10-07T08:57:36Z
2010-10-07T08:57:36Z
2010
 
Type Conference Article
 
Identifier Oceans'10 MTS/IEEE Seattle, September 20-23, 2010, Seattle, Washington (USA). USA; 9 pp
http://drs.nio.org/drs/handle/2264/3719
 
Language en
 
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Publisher IEEE