Modelling of hydrodynamic circulation in Benoa Bay, Bali

Nining Sari Ningsih; Al Azhar Muchamad

doi:10.1007/s00773-012-0195-9

Modelling of hydrodynamic circulation in Benoa Bay, Bali

Nining Sari Ningsih, Al Azhar Muchamad

Geology

2 Citations (Scopus)

Abstract

A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditions have been tested: (1) specifying elevation at all boundaries; and (2) implementing a combination of elevation and velocity at the boundaries. Performance of the model results has been quantified in terms of mean absolute errors, root-mean square errors, and correlation coefficients based on the availability of water level and current data. The general agreement between simulated and observed values of water elevation and currents is encouraging. Errors in computed water levels are less than 5 % of the local tidal range, and correlations between the data and model exceed 0.95. Meanwhile, errors and correlations for simulated currents are less than 22 % and are about 0.75, respectively.

Original language	English
Journal	Journal of Marine Science and Technology
Volume	18
Issue number	2
Pages (from-to)	203-212
Number of pages	10
ISSN	0948-4280
DOIs	https://doi.org/10.1007/s00773-012-0195-9
Publication status	Published - Jun 2013

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10.1007/s00773-012-0195-9

Cite this

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title = "Modelling of hydrodynamic circulation in Benoa Bay, Bali",

abstract = "A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditions have been tested: (1) specifying elevation at all boundaries; and (2) implementing a combination of elevation and velocity at the boundaries. Performance of the model results has been quantified in terms of mean absolute errors, root-mean square errors, and correlation coefficients based on the availability of water level and current data. The general agreement between simulated and observed values of water elevation and currents is encouraging. Errors in computed water levels are less than 5 % of the local tidal range, and correlations between the data and model exceed 0.95. Meanwhile, errors and correlations for simulated currents are less than 22 % and are about 0.75, respectively.",

keywords = "A three-dimensional hydrodynamic model, ECOM, Benoa Bay, Correlation coefficient, Root-mean square error",

author = "Ningsih, {Nining Sari} and Muchamad, {Al Azhar}",

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doi = "10.1007/s00773-012-0195-9",

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issn = "0948-4280",

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TY - JOUR

T1 - Modelling of hydrodynamic circulation in Benoa Bay, Bali

AU - Ningsih, Nining Sari

AU - Muchamad, Al Azhar

PY - 2013/6

Y1 - 2013/6

N2 - A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditions have been tested: (1) specifying elevation at all boundaries; and (2) implementing a combination of elevation and velocity at the boundaries. Performance of the model results has been quantified in terms of mean absolute errors, root-mean square errors, and correlation coefficients based on the availability of water level and current data. The general agreement between simulated and observed values of water elevation and currents is encouraging. Errors in computed water levels are less than 5 % of the local tidal range, and correlations between the data and model exceed 0.95. Meanwhile, errors and correlations for simulated currents are less than 22 % and are about 0.75, respectively.

AB - A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditions have been tested: (1) specifying elevation at all boundaries; and (2) implementing a combination of elevation and velocity at the boundaries. Performance of the model results has been quantified in terms of mean absolute errors, root-mean square errors, and correlation coefficients based on the availability of water level and current data. The general agreement between simulated and observed values of water elevation and currents is encouraging. Errors in computed water levels are less than 5 % of the local tidal range, and correlations between the data and model exceed 0.95. Meanwhile, errors and correlations for simulated currents are less than 22 % and are about 0.75, respectively.

KW - A three-dimensional hydrodynamic model

KW - ECOM

KW - Benoa Bay

KW - Correlation coefficient

KW - Root-mean square error

U2 - 10.1007/s00773-012-0195-9

DO - 10.1007/s00773-012-0195-9

M3 - Journal article

SN - 0948-4280

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SP - 203

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JO - Journal of Marine Science and Technology

JF - Journal of Marine Science and Technology

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