摘要:
1995年2月26日至3月6日,在琼州海峡的新海一四塘断面上,大小潮期间进行15条船同步测流.该断面上涨潮流速普遍大于落潮流速,实测最大涨潮流速为172cm/s,最大落潮流速为142cm/s;大潮期间北部6个站全层平均余流速度为18.4cm/s.海峡中间3个站0～20m层平均流速为18.3cm/s,南部6个站平均余流速度为10.2m/s.中间和北部诸站余流方向指向W一S范围,南部6个站因受地形影响,流向指向NE.用数值计算方法,再现了大小潮期间琼州海峡整个潮流场.大潮期间,通过西断面(灯楼角──玉苞角)落潮流总通量为4.73×1010m3,涨潮流总通量为4.29×1010m3;通过东断面(东营──龙塘镇)落潮流总通量为5.22×1010m3,涨潮流总通量为4.90×1010m3,其净通量,西、东断面分别为0.43×1010和0.32×1010m3,其方向指向西.
Abstract:
From Februarg.26 to March 6,1995, the currents on 15 stations between Xinghai and Sitang are measured.The characteristics of the currents are as follows:The speeds of flood current are larger than ebb current.The maximum flood speed is 172 cm/s,the maximum ebb speed is 142 cm/s;the speed of mean residual current on north 6 stations is 18.4 cm/s.The speed of mean residual current on middle 3 stations of the straits is 18.3 cm/s.The speed of mean residual current on south 6 stations is 10.2 cm/s.The directions of residual currents are in range W-S on northern and middle stationss,and in range N-NE on southern stations, because of the influence of the topography.This paper has used a model to calculate the tidal currents in the straits.The sum of the water amount passing through the west section (Dengloujiao-Yubaojiao) is 4.73×1010m3 (by ebb current).and is 4.29×1010m3 (by flood tide).The sum of the water amount passing through the east section (Dongying-Longtangzhen) is 5.22×1010m3 (by ebb current) and is 1.90×1010m3 (by flood tidal current).The net amounts are 0.43×1010m3 (west section) and 0.32×1010m3 (east section).The direction of the net transportation points toward west.
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