Accuracy Evaluation of Regional and Global Tidal Models (TPXO9 and Goddard Ocean Tide) at Kabil Tidal Station

Journal of Applied Geospatial Information Pub Date : 2023-06-15 DOI:10.30871/jagi.v7i1.5591

S. N. Chayati, Muhammad Zainuddin Lubis, Adinda Syahrani

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Abstract

Indonesia is an archipelagic country with a total marine area of 5.9 million km², consisting of 3.2 million km² of territorial waters and 2.7 km² of Exclusive Economic Zone waters, not including the continental shelf. With the vast waters in Indonesia, sufficient information about the tides is needed. Limitations of terrestrial tide data amidst the increasing need for marine information can be overcome by using global and regional tide models. This study uses the regional tidal data model released by BIG (Geospatial Information Agency) and the global tide model TPXO9 and GOT (Goddard Ocean Tides). From the two global tidal models, the tidal harmonic constant values are extracted at the tidal observation point in Kabil. Evaluation of global and regional tide models is carried out by comparing the amplitude values of the main harmonic constants of the tide models of global and regional tides with the amplitude values of the harmonic constants of terrestrial tidal measurement data to obtain a comparison of accuracy. The results of this research show the value of main tidal harmonic.

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卡比尔潮汐站区域和全球潮汐模型（TPXO9 和戈达德海洋潮汐）精度评估

印度尼西亚是一个群岛国家，海洋总面积为 590 万平方公里，其中领海 320 万平方公里，专属经济区水域 270 平方公里，不包括大陆架。印度尼西亚水域广阔，因此需要足够的潮汐信息。在对海洋信息的需求日益增长的情况下，可以通过使用全球和区域潮汐模型来克服陆地潮汐数据的局限性。本研究使用了地理空间信息局（BIG）发布的区域潮汐数据模型以及全球潮汐模型 TPXO9 和 GOT（戈达德海洋潮汐）。从这两个全球潮汐模型中，提取了卡比尔潮汐观测点的潮汐谐波常数值。通过比较全球和区域潮汐模型的主要谐波常量振幅值与陆地潮汐测量数据的谐波常量振幅值，对全球和区域潮汐模型进行评估，以获得精度比较。研究结果显示了潮汐主谐波的值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Applied Geospatial Information

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