2014 Fiscal Year Final Research Report
Tsunami observation by oceanographic radar
Project/Area Number |
24560525
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Measurement engineering
|
Research Institution | University of the Ryukyus |
Principal Investigator |
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Keywords | 海洋レーダ / 計測システム / 津波 |
Outline of Final Research Achievements |
Oceanographic radar, which can observe distributions and time-variations of coastal surface currents, is expected to detect actual tsunami arrivals. Technical and observation parameters of tsunami observation by oceanographic radar are discussed in detail and summarized. The q-factor, which signals the tsunami arrival when it exceeds a threshold value, is evaluated as its performance. As the extension of the q-factor computation, we introduce averaging method of coastal current velocities over “width-limited band” to analyze in detail short-time distribution of current patterns like tsunami waves and oscillation. The inversion method to estimate tsunami initial surface elevation using oceanographic radar data is also developed and will contribute to prevent and mitigate tsunami disasters.
|
Free Research Field |
電子システム工学
|