semidiurnal in English
adjective
lasting half a day; happening about once every twelve hours
Use "semidiurnal" in a sentence
1. The Kelvin tide of the Atlantic ocean is a semidiurnal wave that travels northward.
2. The amplitude of this wave is about half of that of the semidiurnal oscillation [eq. (7)].
3. The few data on the lunar semidiurnal (L2) oscillation show also the increse of the amplitudes with height.
4. A Fourier analysis shows a semidiurnal component with an amplitude of 1 /2 of that of the diurnal component, phase shifted by 180°.
5. The amplitudes and phases of diurnal and semidiurnal tides show some quasi-periodic characteristics which may be resulted from nonlinear interaction between tides and planetary waves.Sentence dictionary