中国海域浮游硅藻钟形中鼓藻Bellerochea orologicalis Stosch初步研究

我国迄今已记录的中鼓藻属中只有一种——锤状中鼓藻Bellerochea malleus(Bright- well)Van Heurck有详细报导,作者在中国海域进行浮游生物取样时采到本属的另一种钟形中鼓藻Bellerochea horologicalis Stosch,1977.对本种与锤状中鼓藻的重要区别,以及本种的细胞形态、结构、生态习性与分布进行了描述。

PRELIMINARY STUDY ON BELLEROCHEA HOROLOGICALIS STOCH IN CHINA SEA AREA

The governing equations are derived for regular wave propagation incorporating- multi-transformation factors such as water current (current factor),nonlinear dispersion effect (nonlinear factor),rapidly varying topography effect (topography factor),energy loss due to bottom friction (friction factor),refraction,diffraction and wave breaking on the ba- sis of Kirby's mild-slope equation with water current.The determination method of current factor,nonlinear factor,friction factor and topography factor is introduced.Based on the de- rived equations have many advantages.1) The difficulties in soling the wave potential func- tions are avoided and the boundary value problems of ellipse are transformed into initial value problems;2) The wave height and direction can be directly solved;3) They can be solved by using a finite difference scheme with no restrictions on the spatial step,therefore are applica- ble to wave field calculation for large coastal areas;4) The equations incorporate comprehen- sively multi-factors of wave transformation and are more reasonable.5) They can deal with wave breaking problems easily.