海潮对重力固体潮的影响
EFFECTS OF OCEAN LOADING ON GRAVITY TIDE
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摘要: 本文研究了海潮重力负荷效应的计算方法和中国大陆海潮(M2波)负荷效应的空间分布特征.给出了顾及测站高程的计算负荷效应的公式.从理论上证明了应该改化'n因子,这样不仅消除了由伪潮高所产生的误差|2fH*|,而且使引力项加快了一阶收敛速度.对已有的远近区结合法作了进一步的研究,确定了截断角0和逼近阶数 m 之间的取值关系,认为取0=12和 m=17是最合适的.计算了中国大陆共200个点的负荷效应,给出振幅分布图,并且就其分布特征进行了讨论.Abstract: In this paper we deal with the problems in the calculation of ocean loading effects (M2) on gravity tide and its space distribution in continental China.A calculating method is proposed in which the elevation of the calculated station is taken into account. The facter n must be transformed in theory so that the gravitational force term will have the same speed of convergence as the elastic term and the error |2fH*| is eliminated naturally. The method is further studied so that it combines the integral and approximation methods. The relation between the truncation angle 0 and the approximation order m are determined. The best way is: 0= 12 and m = l7. Effects of ocean loading on gravity tide of 200 points in China are calculated. The space distribution of the effects are given and discussed.
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[5] Groten, E., and J. Brennecke, Global interaction between earth and sea tides, J. Ceophys. Res., 78, 8519——8526, 1973.
[6] 许厚泽、陈振邦、杨怀冰,海洋潮汐对重力固体潮观测的影响,地球物理学报,25,120——129,1982,
[7] 李瑞浩、陈冬生、傅兆珠、魏望生、翩大西,中国固体潮向量空间分布特征的研究,地震学报,6,223——240,1984,
[8] 李瑞浩、陈冬生、傅兆珠,上海地区重力固体潮研究,地壳形变与地震,1982,1: 7——13.
[9] Перцев,Ъ.П.,Оценка влияныи морсхих Прилйвов на земли в лунктах уцанлных от океанов,сь."Землие приливы и внутреинее строение земли",стр.10——22,"Наука",Масква, 1969.
[10] Pekeris, C. L., The bodily tide and the yieding of the earth due to tidal loading, Geophys. J. R. astr.soc., 52, 1——3, 1978.
[11] 许厚泽、蒋福珍,关于重力异常球函数展式的变换,测绘学报,7,252 ——259,1964,
[12] Schwiderski, E. W., The semidiurnal principal lunar tide (M2), Atlas of tidal charts and maps, NSWC TR79——414, 1979.
[13] 沈育疆,东中国海潮汐数值计算,山东海洋学院学报,10,26——35,1980.
[14] 沈育疆,南海潮汐数值计算,海洋湖沼通报,1,1——10,1985.[1] Longman, I. M., A Green's function for determining the deformation of the earth under surface mass load,I, Theory, J. Geopkys. Res., 67, 845, 1962.
[2] Longman, I. M., A Green's function for determining the deformation of the earth under surface mass load,II, Computation and numerical results, J. Ccophys. Res., 68, 485——496, 1963.
[3] Farrell, W. E,Deformation of the earth by surface loads, Rev. Geophys. Space Phys., 10, 761——797, 1972.
[4] Pertsev, B. P., The effects of ocean tides upon earth tide observation, Sixeme simposium international sur les mareés terrestres communication series A, No. 9, observatoire rayal de belgique, 113——115, 1970.
[5] Groten, E., and J. Brennecke, Global interaction between earth and sea tides, J. Ceophys. Res., 78, 8519——8526, 1973.
[6] 许厚泽、陈振邦、杨怀冰,海洋潮汐对重力固体潮观测的影响,地球物理学报,25,120——129,1982,
[7] 李瑞浩、陈冬生、傅兆珠、魏望生、翩大西,中国固体潮向量空间分布特征的研究,地震学报,6,223——240,1984,
[8] 李瑞浩、陈冬生、傅兆珠,上海地区重力固体潮研究,地壳形变与地震,1982,1: 7——13.
[9] Перцев,Ъ.П.,Оценка влияныи морсхих Прилйвов на земли в лунктах уцанлных от океанов,сь."Землие приливы и внутреинее строение земли",стр.10——22,"Наука",Масква, 1969.
[10] Pekeris, C. L., The bodily tide and the yieding of the earth due to tidal loading, Geophys. J. R. astr.soc., 52, 1——3, 1978.
[11] 许厚泽、蒋福珍,关于重力异常球函数展式的变换,测绘学报,7,252 ——259,1964,
[12] Schwiderski, E. W., The semidiurnal principal lunar tide (M2), Atlas of tidal charts and maps, NSWC TR79——414, 1979.
[13] 沈育疆,东中国海潮汐数值计算,山东海洋学院学报,10,26——35,1980.
[14] 沈育疆,南海潮汐数值计算,海洋湖沼通报,1,1——10,1985.
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