Evaluating the Location of Tsunami Sensors: Methodology and Application to the Northeast Coast of Taiwan

Guan-Yu Chen ； Chin-Chu Liu

《Terrestrial, Atmospheric and Oceanic Sciences》 20卷4期 (2009/08) Pp. 563-571

摘要

無資料

關鍵字

Reciprocal Green's function ； Tsunami sensor ； Max gain

並列摘要

The ”max gain” which is the maximum absolute value of the reciprocal Green's Function of a city vulnerable to tsunami dam age is used to evaluate the efficiency of the location for tsunami detecting instruments. The max gain is the correlation between the water elevation variations at the observatory and the vulnerable coastal city. After vulnerable cities are determined, the max gain diagram can be used to deter mine the most favorable location for observation.
To verify the applicability of the methodology of a tsunami monitoring sys tem, the Marine Cable Hosted Observatory (MACHO) project in Tai wan is analyzed in de tail. Four vulnerable cities, Tou-cheng, Chi-long, Su-ao, and Hua-lien, are chosen first. It is found that from the hydro dynamic point of view the Ryukyu Is land Arc is more important than the Yaeyama Ridge. The max gain distribution is found to be useful for optimizing the tsunami monitoring sys tem in that some modification on the node locations is predicted to significantly improve the efficiency of the tsunami sensors without changing the route or the cost.

並列關鍵字

Reciprocal Green's function ； Tsunami sensor ； Max gain