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Ocean Observation Systems
OCEAN OBSERVATION SYSTEMS
NATIONAL INSTITUTE OF OCEAN TECHNOLOGYCHENNAI – 600 100
Satheesh C. ShenoiIndian National Centre for Ocean Information Services (INCOIS)
Hyderabad, India
Real Time Ocean Observation System for identifying Cyclone and Tsunami
74 parameters measured
Real Time Data transmission to NIOT & INCOIS
4 Coastal buoysKrishnapatnam, Andaman,
Lakshadweep & Goa
Surface meteorologicalWind speed and direction
Air temperature
Air pressure
Humidity
Short wave radiation
Incoming long wave radiation
Precipitation
Surface Ocean parametersSea surface temperature
Conductivity
Wave
Current speed and direction
Sub surface parameters Temperature and salinity at depths starting from 5m, 10m, 15m, 20m, 30m, 50m, 75m, 100m, 200m and 500m
Currents at depth levels 10m, 20m, 30m, 50m & 100m
Functional Buoys ‐ 21
Objective:To Establish Buoy based observation platforms to measure sub‐surface, surface and atmospheric parameters in the ocean
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MET OCEAN BUOY OMNI BUOY TSUNAMI BUOY
Ocean Observation Systems (OOS)Buoy Variants
Coastal buoys
Tsunami Buoy Configuration
Types of mooring systems handled
Coastal Buoy Mooring configuration
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Buoy Locations
20° 48’ 00”N65° 20’ 00” E
MET OCEAN BUOYSTSUNAMI BUOYS
20° 10’ 50”N67° 39’ 30” E
19° 00’ 00”N67° 00’ 00” E
15° 00’ 00”N69° 00’ 00” E
12° 00’ 00”N68° 40’ 00” E
10° 37’ 00”N72° 17’ 00” E
08° 00’ 00”N73° 00’ 00” E
07° 00’ 00”N88° 00’ 00” E
18° 10’ 00”N89° 40’ 00” E
17° 58’ 00”N89° 44’ 00” E
16° 30’ 00”N88° 00’ 00” E
13° 30’ 00”N84° 00’ 00” E
10° 30’ 00”N94° 00’ 00” E
14° 00’ 00”N87° 00’ 00” E
15° 00’ 00”N89° 00’ 00” E
11° 00’ 00”N89° 30’ 00” E
06° 15’ 00”N88° 48’ 00” E
03° 48’ 00”N91° 42’ 00” E
LakshadweepIslands
Andaman & NicobarIslands
15° 23’ 40”N73° 45’ 22” E
10° 52’ 33”N72° 12’ 40” E
14° 16’ 52”N80° 12’ 15” E
11° 35’ 23”N92° 35’ 49” E
COASTAL BUOYS
Total functional buoys = 21 nos.10 OMNI, 7 Met Ocean & 4 Tsunami buoys
12
Buoy Status & Continuous Data Availability
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Sensor Fit
• Air Temperature• Air Pressure• Wind Speed • Wind Direction• Wave Height• Wave Direction• Surface Currents• Water Temp. • Conductivity
MET OCEAN BUOY
OMNI Buoys
Ocean Parameters
Met Parameters
Wave Parameters
Sub surface Parameters
OMNI BUOY
MET Air Humidity, Air Pressure, Air Temperature , Wind Speed, Wind Direction,Wind Gust, Irradiance, Long Wave Radiation & Rainfall.
OCEAN Surface & sub‐surface Temperature, Salinity & Current
WAVE Height, Direction, Period etc
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Significance of OMNI buoy
Subsurface Temperature
Source for continuous subsurface information
Information on salinity structure of the ocean – BARRIER LAYER
Currents up to 100m depth
Significant Observations from Indian Tsunami buoys under Tsunami Early Warning System
Depth 4 Km
Functional buoys 4Data provided to Tsunami Warning Centre at INCOIS, Hyderabad
Dep
th 4 Km
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Indian OMNI Buoy System
106 Parameters Measured
MetWave
Subsurface
Prototype Indian OMNI Buoy system Successfully integrated, tested, and deployed
Indegenised Data Acquisition System
Dual mode (INSAT & INMARSAT) Communication System on Tsunami Buoys
INSAT[MSS] INMARSAT[Mail/Modem]
Tsunami Mode
Surface Buoy
Normal Mode
BPR
INMARSAT(Indian Satellite) (UK Maritime Satellite)INSAT Successfully integrated, tested and deployed
Dual mode (INSAT & INMARSAT) communication system on Tsunami buoy
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Hull Diameter : 2.4 mHull Material : FRP Foam used : PolyurethaneVolume : 4.3 m3
Hull Height : 900 mmCylinder ID : 850 mmOverall Height : 1440 mmWeight : 1990 KgHull Draft : 372 mm
BUOY DESIGN AND ANAYSIS
SPECIFICATIONBUOY ASSEMBLY
SALIENT FEATURE1. Cylindrical shape hull2. Single hull 3. All assembly points at subsurface4. Endurance period 2 years5. Dual fender6. IRS certified7. Moon pool for add instrument8. Health monitoring system
Pressure, temperature and gas deduction sensors added
TYPICAL MOORING
2.4 0.52
80.37
20.54
0
CG
0.19
2
DIMENSIONS ARE IN METER
INSTRUMENT CONTAINER
HULL
HOOD
GI PIPE (2m)
KEEL FRAME
Thank you
