Presentation Description

No description available.


By: RUBENOF (35 month(s) ago)

It is very good presentations, it is working with Iridium System, How long is the delay?

By: sudha578 (38 month(s) ago)

i want this ppt ... very urgent .... my id is revathi.rajavarapu@gmail.com...... send it to me ...

By: abbycool (42 month(s) ago)

can i download it

By: abbycool (42 month(s) ago)


Presentation Transcript

Slide 1: 


What We Are Afraid Of ? : 

What We Are Afraid Of ? There is one common ? Mark voyaging in our mind since we were a cell. A ? Mark of being survive. On a revenge of nature due to man’s comfort, Man had paid a lot for that. Every year thousands of people die due to natural disasters.

Tsunami Monster : 

Tsunami Monster The term “tsunami” was adopted for general use in 1963 by an international scientific conference. A Japanese word made of “tsu” and “nami” characters where ‘tsu’ means “harbour” and “nami” means “waves”. Recent attack was there in 24 ‘th December 2004 in to the coastal areas of Indian ocean. More then 150,000 were snuffed out . This monster gave endless suffering to the mankind and nature’s other component. Just because of lagging of “EARLY WARNING SYSTEM” ,Endless destruction to the properties ,human resources occurred.

Slide 4: 

Photographs of Tsunami effect taken from the satellite

Why early warning programmers? : 

Why early warning programmers? On January 6, 2005, the United Nations Environment Program (UNEP) announced an international effort to develop a tsunami early warning capacity for nations bounding the Indian Ocean. The Australian government announced it would develop and fund its own effort to guard its Indian Ocean. For stopping endless destruction It necessary organize “Satellite based Tsunami Early warning system” in Indian ocean.

Tsunami Early Warning System : 


Introduction : 

Introduction DART:-(Deep Ocean Assessment And Recording Tsunamis.) The DART Project is an effort by the Pacific Marine Environmental Laboratory of the National Oceanic and Atmospheric Administration (NOAA) to develop a capability for real-time reporting of tsunami measurements in the deep ocean. The International Tsunami Information Center was established by UNESCO in 1965, following the 1960 Chile tsunami and the 1964 Alaska event. 85 percent of tsunamis occur in the Pacific. This DART project organize the tsunami early warning programs

Waves : 

Waves Seismic waves:-This waves are responsible for earthquake in deep ocean surface ,which has 3 types primary , secondary and slower then secondary. Tsunami waves:-A Tsunami is a series of ocean waves generated by a rapid ,large-scale disturbance of sea water ,that associated primarily with earthquake, volcanic eruptions ,landslides , occurring in the ocean floor. The highest velocity of this waves varies from 300 to 800 Km/hour And its height of that waves depending upon intensity of earthquake.

Generation of Tsunami Waves

Tsunami Alarm System : 

Tsunami Alarm System There are major two component of this system:- (A) Bottom pressure recorder(BPR)- Underground sea floor equipment (B) Surface buoy:- surface equipment (A) (B)

What is tsunami early warning system : 

What is tsunami early warning system It is a system consisting BPR (bottom pressure recorder), surface buoy (reporting unit) that transmit the tsunami and seismic reading to satellite and through satellite the warnings are being issued to the coastal area by the IMD office and tsunami warning centre.

Bottom pressure recorder : 

Bottom pressure recorder The basic component of the tsunami alarm system that records seismic and Tsunami waves. Validity:-more then 1 year Accuracy:- sensitive to small as 0.5 cm amplitudes to 6 Km in water depth. It is having Acoustic modem.

Slide 13: 

Pressure Transducer The tsunami BPR uses a pressure transducer manufactured by Paroscientific, Inc. These transducers use a very thin quartz crystal beam, electrically induced to vibrate at its lowest resonant mode. This oscillator is attached to a Bourdon tube that is open on one end to the ocean environment. As a tsunami wave crest passes over the instrument, the increased pressure causes the Bourdon tube to uncurl, stretching the quartz crystal and increasing the vibration frequency.

Slide 15: 

Reciprocal Counter:-The high resolution precision reciprocal counting circuit continuously measures the pressure and temp and keeps it records of 15 seconds in sampling window. Computer:-32 bit 3.3 volt Motorola 68332 microcontroller, and was programmed in C., a 12-bit A/D converter with 8 input channels, a real-time clock, and 512 bytes of RAM. Tilt Sensor:-it relates with recovery of tsunameter related issue.

Slide 16: 

Batteries:-These batteries are designed to last for four years on the seafloor; however, The tsunameter computer and pressure measurement system uses an Alkaline D-Cell battery pack with a capacity of 1560 watt-hours. Acoustic Modem:-ATM-880 Telesonar acoustic modem .that transmit digital data. Reporting Modes:-2 types Standard Mode:-reports once every six hours, and sending the current status of system. this provide assurance that the system is working correctly. Event Mode:-it is been triggered when there is a detection of seismic waves and tsunami related issues. Tsunami waveform data continue to be transmitted every hour until the Tsunami Detection Algorithm is in a non-triggered status. At this point the system returns to the Standard Mode.

Surface buoy : 

Surface buoy

Slide 18: 

Iridium Transceiver (or Goes) A Motorola 9522 L-Band Iridium transceiver from NAL Research provides data connectivity via the Iridium Satellite Network. GPS A Leadtek model 9546 GPS receiver is used to maintain the buoy’s computer clock’s accuracy to within ~1 sec of GMT. Additionally, a GPS position is reported once per day to monitor buoy position.

Slide 20: 


Slide 21: 



FUTURE FUTURE :-the development process to improve reliability, expand data products, and decrease costs. Increasing service life of seafloor BPR from 2 to 4 years. platforms and mooring configurations. Two-way communications from desktop to seafloor BPR. PLANS for designing DART II system .



Slide 24: 

Thank you Real time questions