Anomalous amplifications of semidiurnal tides along the western coast of Taiwan

✍ Scribed by Ming-Chung Lin; Wen-Jye Juang; Ting-Kuei Tsay

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 632 KB
• Volume: 28
• Category: Article
• ISSN: 0029-8018
• DOI: 10.1016/s0029-8018(00)00049-4

✦ Synopsis

By compiling all the tidal data gathered from island-wide results of simple harmonic analysis, anomalous amplifications of semidiurnal tides along the western coast of Taiwan are illustrated. The mechanisms are investigated both theoretically and numerically by applying the linear shallow-water wave equations. Waves trapped by a continental shelf and resonance of tidal co-oscillation are identified theoretically. Numerically, a two-dimensional finite element model is applied to real topography for tidal computations. The co-range and equi-phase charts of three main semidiurnal constituents (M 2 , S 2 , and N 2 ) and one diurnal constituent K 1 are calculated. Anomalous amplifications of semidiurnal tides that appear as partially standing waves are demonstrated.