引入差比关系法分析西北太平洋TOPEX/POSEIDON卫星高度计测高数据
Tidal harmonic analysis of TOPEX/POSEIDON data in Northwest Pacific by introducing difference-ratio relations
-
摘要: TOPEX/POSEIDON(T/P)卫星高度计数据信息中存在周期成分混淆问题.对其中的一类混淆引入差比关系方法对混淆的分潮进行分离.卫星轨道交叉点资料包括升轨和降轨资料,资料量比沿轨点资料多1倍,经分析发现:在已有为期6a多的观测资料时间序列中,在沿轨处混淆的分潮如K1和SSA在交叉点处不再混淆,可以直接分离.因此首先对交叉点资料进行调和分析.然后由交叉点的分析结果得到分潮间的差比关系,处理到相近的沿轨点处,从而得到沿轨点的调和常数.用引入差比关系方法,对西北太平洋海区6a多的T/P卫星高度计资料进行了潮汐分析,并与沿岸及岛屿验潮站资料进行了比较,所得结果较满意.
-
关键词:
- 调和分析 /
- TOPEX/POSEIDON /
- 西北太平洋 /
- 差比关系
Abstract: The difference-ratio relations are introduced to separate tidal constituents that are aliased due to the sample interval of the TOPEX/POSEIDON altimeter.It is found that some tidal constituents such as K1 and SSA,though aliased at along track points,are not aliased at crossover points because there is one time more data at crossover points than that at along track points.So the harmonic analysis method can be employed directly on time series at the crossover points.Then the difference-ratio relations from the crossover points are introduced to analyze the time series at along track points.The TOPEX/POSEIDON data in the Northwest Pacific are analyzed with this method. The results from this method agree well with tidal constants from tidal gauges.-
Key words:
- tidal harmonic analysis /
- TOPEX/POSEIDON /
- Northwest Pacific /
- difference-ratio relations
-
董晓军,马继瑞,黄珹,等利用TOPEX/POSEIDON卫星高度计资料提取东中国海潮汐信息的研究[J]海洋与湖沼,2002,33(1):7-13 李立,吴日升,李燕初,等TOPEX/POSEIDON高度计浅海潮汐混淆的初步分析[J].海洋学报,1999,21(3):7-14 方国洪,郑文振,陈宗镛,等潮汐和潮流的分析和预报[M]北京:海洋出版社,1986 474. SCHRAMA E J O,RAY R D A preliminarytidal analysis of TOPEX/POSEIDON altimetry[J]J G R,1994,99(C12):24 799-24 808 王骥,方国洪不完整逐时潮汐观测记录的分析[J].海洋学报,1981,3(2):193-210 CARTWRIGHT D, RAY R. Energetics of global ocean tides from Geosat altimetry[J]. J G R, 1991, 96:16 897-16 912. LE PROVOST C. A new in situ reference data set for ocean tides[Z]. AVISO Altimetry Newsl., 3, Toulouse Cedex 4,France, 1994. FANG Y, CHOI B, FANG G. Global ocean tides from Geosat altimetry by quasi-harmonic analysys[J]. Chinese Journal of Oceanology and Limnology, 2000, 18(3): 193-198. SHUM C K, WOODWORTH P L, ANDERSEN O B, et al. Accuracy assessment of recent ocean tide models[J]. J G R,1997, 102(C11): 25 173-25 194. -
计量
- 文章访问数: 751
- HTML全文浏览量: 21
- PDF下载量: 1601
- 被引次数: 0
下载:
