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Implementation of the Least Square Method in Tidal Harmonic Analysis Using Python Programming

Year: 2026

Type: article

Abstract: This study aims to analyze the tidal characteristics in the southern coastal area of Madura using the least squares-based harmonic analysis method with Python programming. This method is used to obtain tidal harmonic constants and determine the tidal type in the study area. The analysis results show that the M₂ component is the dominant component with an amplitude of 0.498 m, followed by the K₁, O₁, and S₂. The Formzahl value of 1.056 indicates that the tidal type in the southern coastal area of Madura is a mixed tide tending to be semidiurnal. Model validation using the Root Mean Square Error (RMSE) produced a value of 0.201 m, indicating that the modeling results have a fairly good level of accuracy. The results of this study are expected to be a reference in the planning and management of coastal areas in Madura waters.

Source: Maritime Park Journal of Maritime Technology and Society

DOI: 10.62012/mp.vi.48211

Authors: Suci Fitra Rahmadania, Ilham Cahya, Ashari Wicaksono, Inayatul Lailiyah

Institution: Universitas Trunodjoyo Madura

Language: English

Topic: Oceanographic and Atmospheric Processes

Subfield: Oceanography

Field: Earth and Planetary Sciences

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W7129258376

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