Float TEWS Made In Indonesia Soon Is launched

BANTEN—MEDIA: Indonesia will launch 10 float units ( buoy) Tsunami Early Warning System ( TEWS) artificial in country starts January 2008.

" Next year will become busy year for us, because starts January 2008 there will be 20 buoy again is launched, 10 units among others made in Indonesia x'self," said Kepala Balai Teknologi Survei Kelautan BPPT Ridwan Djamaluddin in between Tsunami Drill to commemorate three years Acheh tsunami along the beach Selagu, Banten, Wednesday ( 26/12).

Germany renders 10 units buoy and United States one units. Then result of same job(activity of Indonesia-AS one units and one units again property of Norwegian attached by Malaysia. Total which will be launched to the last 2008 there are 23 units, he said.

Ridwan confess 23 units has not is ideal to take care of all Indonesia tsunami gristle coastal area, but have been enough optimal.

Buoy TEWS, he said, consisted of two bodyworks, that is float ( buoy) placed on the surface of sea and Ocean Bottom Unit ( OBU) put down in sea floor.

Sendor most important is Bottom Pressure Recorder ( BPR) a pressure gauge of sea floor in OBU which is sensitive to sea water coloum. Buoy TEWS is yoke to sea floor to apply ballast bound with steel chain and nylon that do not too far from OBU.

Its(the mode of action, their OBU increase of sea-waters as result of tsunami, data from OBU is sent to buoy to apply acoustic modem and buoy then sends data to station of receiver applies satellite.

In normal condition buoy sends data every one hours, but if happened tsunami buoy will send data every one minutes. Delivery time of data from OBU up to station of receiver is 1-2 minutes.

With earthquake characteristic in Indonesia sea territory, info from buoy expected to be acceptable within 5-15 minutes after earthquake, but depends on four p’s buoy to center earthquake. So public had enough time to evacuate.

Network buoy tsunami of vital importance and valuable because a real

useful to protect tens of million Indonesia publics in coastal area and hundreds of coastal area public in Indian Ocean, he/she said. ( Ant/OL-03)