| 清水沟流路期间黄河三角洲区潮波运动的模拟和预测 |
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| 引用本文： | 乐肯堂,刘兴泉,郝琰,于康玲.清水沟流路期间黄河三角洲区潮波运动的模拟和预测[J].海洋科学集刊,2001(43):13-24. |
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| 作者姓名： | 乐肯堂 刘兴泉 郝琰 于康玲 |
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| 作者单位： | 中国科学院海洋研究所 |
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| 基金项目： | 中国科学院海洋研究所调查研究报告第4029号；中国科学院“九五”重点项目资助，KZ952-S1-424号。 |
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| 摘 要： | 为了探讨黄河三角洲附近潮波运动的变化特征，乐肯堂等(1995)用二维数值模式模拟了1855-1984年该海区的潮汐和潮流的分布变化，并着重考察了M2和S2分潮的无潮点，以及规则全日潮区的位置变化。乐肯堂等(1995)的研究表明，黄河尾闾的摆动以及由此而造成的黄河三角洲之进退，是该海区潮波特征发生变化的主要外因。自从1976年黄河尾闾改道清水沟以来，该流路已稳定运行了20多年，由此造成了河口附近沙嘴不断向莱州湾内延伸，因而对该区的潮波分布特征产生了显著影响。从黄河三角洲区的经济可持续发展和海洋生态环境的可持续发展的目的出发来规划今后黄河尾闾的走向，就必须对以下两个问题进行深入研究：(1)清水沟流路是否还能长期稳定下去；(2)如果清水沟流路长期稳定不变，并且按照清水沟流路期间黄河三角洲向莱州湾推进的方式来推演10a后黄河三角洲的形势，那么到2010年该区的潮波运动将会发生什么变化。为此，在本文中我们仍然采用乐肯堂等(1995)已经过验证的数值模式和数值预的方法对上述问题作初步探讨。
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| 关 键 词： | 清水沟流路、黄河三角洲区、潮波运动 |
| 收稿时间： | 2000/4/15 0:00:00 |
A SIMULATION AND PREDICTION ABOUT TIDAL MOVEMENT OFF THE HUANGHE RIVER DELTA WHEN THE HR PASSES THROUGH THE QINGSHUIGOU STREAM OUTLET |
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| Le Kentang,Liu Xingquan,Hao Yan,Yu Kangling.A SIMULATION AND PREDICTION ABOUT TIDAL MOVEMENT OFF THE HUANGHE RIVER DELTA WHEN THE HR PASSES THROUGH THE QINGSHUIGOU STREAM OUTLET[J].Studia Marina Sinica,2001(43):13-24. |
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| Authors: | Le Kentang Liu Xingquan Hao Yan Yu Kangling |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences |
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| Abstract: | The influence of Huanghe (Yellow) River Delta (HRD)changes on the tidal wave movement in its adjacent area was studied by using a 2D numerical model. Previous study (Le et al., 1995) showed that in modern times the HRD had silted up forward by 2530.4 km2 during the period 1855 to 1984. The changes of the Huanghe River Estuary (HRE) had significant influence on the tidal wave movement in the Bohai Sea. Due to the unceasing changes of the HRE in the past 100-odd years, some basic features of tidal wave movement have been varying with the HRD development. Although the tail of the Huanghe (Yellow) River (HR) has been relatively stable when the HR passes through the Qingshuigou Stream Outlet (QSO) since 1976, the HRD changes have influenced significantly the tidal wave movement. The main results from this study are as follows. (1) The regular diumal region off the HRD was the largest in 1855 and has been gradually decreasing since then. If the QSO keeps its tendency, it will probably vanish in the future. (2) The M2 and S2 amphidromic point locations and their corresponding amplitudes off St. Wuhaozhuang vary as the HRD develops. The locations of the M2 and S2 amphidromic points have been very close to the coast and their amplitudes have become bigger and bigger since 1855. The M2 amplitude at its amphidromic point location now is greater than 3 cm and the lacation slightly moved southeastward from 1976 to 1992. (3) The high speed region with probable maximum speed of > 120 cm/s varies with the development of the HRD from 1855 to 1976, but has not changed much since then. (4) It can be foreseen that if the QSO keeps on going its way for the coming decades, the amphidromic zones of constituents M2 and S2 will decrease gradually and even disappear. (5) It is noteworthy that the amplitued of diurnal constituent m1 along the northern coast of the HRD has slightly increased since the HR tail moved from the Diaokouhe Stream Outlet to the QSO in 1976. |
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