Building Submarine Seismic Detection System

Shang-Hsueh Yu a 、 Po-Chi Chen a 、 Jia-Pu Jang a 、 Chau-Chang Wang a,b,c 、 Ban-Yuan Kuo b

a Taiwan Ocean Research Institute, National Applied Research Laboratories, Kaohsiung, Taiwan

b Institute of Earth Sciences, Academia Sinica, Taipei, Taiwanc Institute of Applied Marine Physics and Undersea Technology, National Sun

Yat-sen University, Kaohsiung, Taiwan

Speaker ： Yu Shang Hsueh

Motivation

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Period ： 2010/10/17 ～ 2011/10/17 ml 2 ≧ ， Total ： 9908

From CWB

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YARDBIRD

1.LOG: 24 bit/4ch、 sample rate: 100Hz、 GPS time compensation、 user interface.2.Deployment period is 1 year, power dissipation must be less than 0.5W.3.Currently maximum depth is 2000m4.Leveling: Error is less than 1∘. Bandwidth: 4sec~40Hz.5.Yardbird hangs flash beacon 、 radio beacon and flag for recovery.6.Center of gravity and buoyancy for downward pose 、 rising and downward velocity.7.Acoustic system for release and location

Seismometer

Buoy Acoustic system

Camera

Beacon

Battery & Log

Specifications

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Seismometer

1. 3 perpendicular components2. Leveling: Error is less than 1∘. 3 .Bandwidth:4sec~40Hz.

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Deployment Experiments

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Recover

Local Seismic Data(1)

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Local Seismic Data(2)

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Teleseismic(1)

3.7 km/s 3.5 km/s

Qinghai earthquake, April 14, 2010 (21.917, 120.116; depth is 1450 m)

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MOU with KORDI in South Korea

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Teleseismic(2)Magnitude 8.6 & 8.2 - OFF THE WEST COAST OF NORTHERN SUMATRA, April 11 ,2012

Yardbird deployed Korea’s East Sea

Magnitude 8.6, 2.311°N, 93.063°E, 22.9 km Magnitude 8.2, 0.773°N, 92.452°E, 16.4 km

Raw data

site

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Future Works

We completed 3 times long term(10 mouths) deployment and 4 times short term (2 weeks ~ 3 months) deployments successfully, and we will still continue research and development further, such as maximum depth will be extended to 6000m 、 channel numbers increase from 4 to 7 for more sensors 、 bandwidth extends from 4 s to 30 s. In order to fulfill the ultimate objective of building an engineering-, science-, and management-wise sustainable system in Taiwan, Our team will continue to work with more domestic universities and search international cooperation.

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Thank You For Your Attention!!

If more questions, please mail to our group!Mr. Chen , Po-Chi: poasmile@gmail.comMr. Jang, Jia-Pu: na2006@gmail.comMr. Yu, Shang-Hsueh: microga@gmail.com