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1、!利用1996年7月厦门站的潮汐观测数据计算调和常数,并利用主要分潮和浅水分潮进行潮汐预报programworkimplicitnonecharacter*80::a1character(len=5),dimension(62,16)::aainteger::bb(62,12),c(62,2),caita(-371:371),i,i1,i2,j,t1real::N0,n(13,6),a(0:13,0:13),b(1:13,1:13),s,s0,s1,s2,s3,sa,hh!n代表Doodson代码;a,b为系数矩阵real::xiaoa(0:13
2、),xiaob(13),gg1,gg2,pjchaocha,t,ma,mi!计算法方程所需的参数real,dimension(1:13)::w,u,f,V0,f1(0:13),f2!f1和f2为法方程右边系数real,dimension(13)::sita,h,g,r,h0(13),g0(13),h1(13),g1(13)!调和常数参数real,dimension(-371:371)::caita1,caita3,caita4,caita8,caita9,caita5,caita11!主分潮、浅水分潮的潮高数值real,dimension(:),
3、allocatable::hightide,lowtide,chaocha!高低潮数值integer,dimension(:),allocatable::hightrq,lowtrq,hight,hightt,lowt,lowtt!读取数据,把潮位数据赋值给bb,把年月份数据赋值给copen(unit=2,file='XM_July1996.dat')read(2,'(a)')a1print*,'数据文件的第一行信息:',a1doi=1,62read(2,'(16a5)')aa(i,:)enddodoi=1,62read(aa(i,5:16),*
4、)bb(i,:)read(aa(i,3:4),*)c(i,:)enddodoi=1,62c(i,2)=int(real(c(i,2))/10.0)enddoclose(2)!计算分潮角速率ww=(/0.002822,0.037219,0.038731,0.041781,0.163845,0.241534,0.078999,&&0.080511,0.083333,0.122292,0.161023,0.041553,0.083561/)w=360*wprint*print*,'角速率w:',w!计算N0(middletime:1996-7-16;d
5、atasum:744,middlenumber:372)N0=259.157-19.32818*(1996-1900)-0.05295*(31*3+30*2+29+15+int((95.0)/4.0))!初始升交点平均黄经N0=-(0.00220641*3+N0)print*!转换成格林威治时间print*,'N0:',N0!数字序号对应选取的分潮,但将5、6(P1、K2)分别与12、13(MS4、M6)对调,其中P1、K2为随从分潮!计算交点订正角uu(3)=10.8*sind(N0)-1.34*sind(2*N0)+0.19*sind(3*N
6、0)u(4)=-8.86*sind(N0)+0.68*sind(2*N0)-0.07*sind(3*N0)u(8)=-2.14*sind(N0)u(13)=-17.74*sind(N0)+0.68*sind(2*N0)-0.04*sind(3*N0)u(1)=-u(8)u(2)=u(3)u(7)=u(8)u(9)=0u(10)=u(8)+u(4)u(11)=2*u(8)u(5)=u(8)u(6)=3*u(8)u(12)=0!print*print*,'交点订正角u:',u!计算交点因子ff(3)=1.0089+0.1871*cosd(N0)-0.
7、147*cosd(2*N0)+0.0014*cosd(3*N0)f(4)=1.006+0.115*cosd(N0)-0.0088*cosd(2*N0)+0.0006*cosd(3*N0)f(8)=1.0004-0.0373*cosd(N0)+0.0003*cosd(2*N0)f(13)=1.0241+0.2863*cosd(N0)+0.0083*cosd(2*N0)-0.0015*cosd(3*N0)f(1)=f(8)f(2)=f(3)f(7)=f(8)f(9)=1f(10)=f(8)*f(4)f(11)=f(8)**2f(5)=f(8)**2f
8、(6)=f(8)**3f(12)=1!print*print*,'交点因子f:',f!查表得到的Doodson代码n(1,:)=(/0,