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Regional ocean tide loading modelling around the Iberian Peninsula

机译:伊比利亚半岛周围的区域海潮负荷模型

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摘要

We developed a new 1 /12° resolution oceanic tide model in the complex region that surrounds the Iberian Peninsula. The model, named IBER01. allows us to obtain more accurate tidal loading computations for precise geodetic and gravimetric observations in this area. The modelling follows the scheme of data assimilation (coastal tide gauge, bottom pressure sensors and TOPEX/Poseidon altimetry) into a hydrodynamical model, which is based on two-dimensional barotropic depth averaged shallow-water equations. Detailed bathymetry data and quadratic bottom friction with a specific drag coefficient for the region have been considered. Improved ocean load maps for the Iberian Peninsula are obtained for eight harmonic constituents (Q1, P1, O1, K1, N2, M2, S2 and K2), after computing the load effect (Newtonian attraction and elastic contribution) using IBER01 and six present-day global oceanic tide models for comparison. The results achieved verify the quality of the new model. Our ocean loading computations reduce considerably the discrepancies between the theoretical Earth tide parameters and those from observations at the level of 0.3%.
机译:我们在围绕伊比利亚半岛的复杂地区开发了一种新的1/12°分辨率的海洋潮汐模型。该模型名为IBER01。使我们能够对该区域进行精确的大地测量和重力观测获得更准确的潮汐载荷计算。该建模遵循将数据同化方案(沿海潮汐计,底部压力传感器和TOPEX / Poseidon测高仪)转化为基于二维正压深度平均浅水方程的流体力学模型。已经考虑了详细的测深数据和该区域具有特定阻力系数的二次底摩擦。在使用IBER01和6个当前载荷计算载荷效应(牛顿吸引和弹性贡献)后,获得了八个谐波分量(Q1,P1,O1,K1,N2,M2,S2和K2)的伊比利亚半岛改进的海洋载荷图。日全球海潮模型进行比较。获得的结果证明了新模型的质量。我们的海洋载荷计算大大减少了理论上的地球潮汐参数与观测值(0.3%)之间的差异。

著录项

  • 来源
    《Journal of geodynamics》 |2009年第5期|132-137|共6页
  • 作者单位

    Instituto de Astronomic y Geodesia (CSIC-UCM), Facultad de Matematicas, Plaza de Ciencias, 3,28040 Madrid, Spain;

    Instituto de Astronomic y Geodesia (CSIC-UCM), Facultad de Matematicas, Plaza de Ciencias, 3,28040 Madrid, Spain;

    Instituto de Astronomic y Geodesia (CSIC-UCM), Facultad de Matematicas, Plaza de Ciencias, 3,28040 Madrid, Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    oceanic model; tidal loading; iberian peninsula; earth tide;

    机译:海洋模型潮汐负荷伊比利亚半岛;大潮;

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