scholarly journals Examination of Harmonic Analysis Methods Using Semi-regular Sampling Data from an ADCP Installed on a Regular Ferry: Evaluation of Tidal and Residual Currents in the Eastern Mouth of the Tsugaru Strait

2004 ◽  
Vol 13 (6) ◽  
pp. 553-564 ◽  
Author(s):  
Hiroshi Kuroda ◽  
Yutaka Isoda ◽  
Mitsuyo Ohnishi ◽  
Masayuki Iwahashi ◽  
Chizuru Satoh ◽  
...  
Keyword(s):  
Harmonic Analysis ◽  
Residual Currents ◽  
Analysis Methods ◽  
Regular Sampling ◽  
Tidal And Residual Currents ◽  
Tsugaru Strait

scholarly journals Modeling of the physical selenocentric surface using modern satellite observations and harmonic analysis methods

2018 ◽  
Vol 1038 ◽  
pp. 012003 ◽  
Author(s):  
A O Andreev ◽  
N Y Demina ◽  
Y A Nefedyev ◽  
S A Demin ◽  
A A Zagidullin
Keyword(s):  
Harmonic Analysis ◽  
Satellite Observations ◽  
Analysis Methods

The observed tidal and residual currents in the Andaman Sea during the second half of 2016

2018 ◽  
Vol 37 (9) ◽  
pp. 13-21 ◽  
Author(s):  
Yanliang Liu ◽  
Jingsong Guo ◽  
Huiwu Wang ◽  
Yuhuan Xue ◽  
Somkiat Khokiattiwong ◽  
...  
Keyword(s):  
Andaman Sea ◽  
Residual Currents ◽  
Tidal And Residual Currents

scholarly journals Three-Dimensional Texture Analysis After Bunge and Roe: Correspondence Between the Respective Mathematical Techniques

1982 ◽  
Vol 5 (2) ◽  
pp. 95-125 ◽  
Author(s):  
C. Esling ◽  
E. Bechler-Ferry ◽  
H. J. Bunge
Keyword(s):  
Harmonic Analysis ◽  
Texture Analysis ◽  
Series Expansion ◽  
Three Dimensional ◽  
Analysis Methods ◽  
Mathematical Techniques

Bunge's and Roe's three-dimensional texture analysis methods, although both founded on harmonic analysis, show some differences between the various mathematical techniques used.This paper establishes the correspondence relation between the respective mathematical techniques allowing one to compare works done in either variant. Taking the latest developments in three dimensional texture analysis into account, the correspondence relations hold for the odd degrees l as well as for the even ones.Finally numerical tables give the extension of the symmetry coefficients B:l4mμ (after Bunge) and R4nμl (after Roe) to all the degrees l of the series expansion, even and odd, including l = 34.

Measurement of tidal and residual currents in the Strait of Hormuz

2016 ◽  
Vol 178 ◽  
pp. 101-109 ◽  
Author(s):  
Jafar Azizpour ◽  
Seyed Mostafa Siadatmousavi ◽  
Vahid Chegini
Keyword(s):  
Residual Currents ◽  
Strait Of Hormuz ◽  
Tidal And Residual Currents

scholarly journals Adaptation of Classical Tidal Harmonic Analysis to Nonstationary Tides, with Application to River Tides

2013 ◽  
Vol 30 (3) ◽  
pp. 569-589 ◽  
Author(s):  
Pascal Matte ◽  
David A. Jay ◽  
Edward D. Zaron
Keyword(s):  
Time Series ◽  
Harmonic Analysis ◽  
River Flow ◽  
Water Levels ◽  
Spectral Lines ◽  
Noise Model ◽  
Analysis Tool ◽  
Tidal Analysis ◽  
Nonstationary Signals ◽  
Analysis Methods

Abstract One of the most challenging areas in tidal analysis is the study of nonstationary signals with a tidal component, as they confront both current analysis methods and dynamical understanding. A new analysis tool has been developed, NS_TIDE, adapted to the study of nonstationary signals, in this case, river tides. It builds the nonstationary forcing directly into the tidal basis functions. It is implemented by modification of T_TIDE; however, certain concepts, particularly the meaning of a constituent and the Rayleigh criterion, are redefined to account for the smearing effects on the tidal spectral lines by nontidal energy. An error estimation procedure is included that constructs a covariance matrix of the regression coefficients, based on either an uncorrelated or a correlated noise model. The output of NS_TIDE consists of time series of subtidal water levels [mean water level (MWL)] and tidal properties (amplitudes and phases), expressed in terms of external forcing functions. The method was tested using records from a station on the Columbia River, 172 km from the ocean entrance, where the tides are strongly altered by river flow. NS_TIDE hindcast explains 96.4% of the signal variance with a root-mean-square error of 0.165 m obtained from 288 parameters, far better than traditional harmonic analysis (38.5%, 0.604 m, and 127 parameters). While keeping the benefits of harmonic analysis, its advantages compared to existing tidal analysis methods include its capacity to distinguish frequencies within tidal bands without losing resolution in the time domain or data at the endpoints of the time series.

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