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Oceanographic Factors as the Indicators for Shipyard Industry Development in Kutaraja Fishing Port: A Preliminary Study

Rizwan Thaib, Jalil Zulkarnain, Akhyar, Husaini

Journal of Ecological Engineering

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2021

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Vol. 22, nr 9

237--245

EN

Shipyard development in Kutaraja Fishing Port is important to improve the port performance. The studies related to shipyards are mainly focused on their productivity, facility layout, production capacity, and management and planning. Meanwhile, there are still limited studies related to the influence of oceanographic factors on shipyard development. This research aimed to identify the impact of oceanographic factors on shipyard industry development in Kutaraja fishing port. The research was conducted from December 2020 to March 2021. The data analyzed in this study were tide, wind, current, wave, bathymetry, and sediment composition. The tide, wind, current, and wave data were collected for the last three years from Meteorology, Climatology, and Geophysical Agency. The current moves from two directions, from northeast and northwest, towards the coastal areas around the eastern part of Kutaraja fishing port, closed to the breakwater. The current in the eastern part moves faster than in the western part, and the western part of the sampling area mostly has shallow waters. The highest tide occurs at 12:00 with a water height of -0.3855 meters, and the lowest tide was at 19:00 with a water height of -1.0485 meters. Fine sand dominated the sediment in the sampling area. The result indicates that oceanographic factors are essential to be incorporated as one of the indicators for shipyard development.

2

Badania polarne Akademii Morskiej w Gdyni

Marsz A. A., Styszyńska A.

Problemy Klimatologii Polarnej

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2015

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Nr 25

75--98

PL

W pracy omówiono tematykę badań prowadzonych przez pracowników Wyższej Szkoły Morskiej/Akademii Morskiej w Gdyni w wysokich szerokościach półkul północnej i południowej. W latach 1975-2015 pracownicy tej uczelni opublikowali łącznie 231 artykułów, komunikatów i sprawozdań oraz 14 pozycji książkowych o charakterze monograficznym dotyczących różnych aspektów badań polarnych. Wśród tych prac 142 pozycje dotyczyły Arktyki i 103 pozycje – Antarktyki. Podstawowa problematyka badawcza obejmowała zagadnienia zmienności i zmian warunków hydroklimatycznych w Arktyce i Antarktyce, kształtowania się warunków lodowych i problemów żeglugi w lodach oraz zagadnień uprawiania żeglugi w rejonach słabo rozpoznanych pod względem nawigacyjnym, w tym badań dotyczących batymetrii dna i geomorfologii wybrzeży. Artykuł zawiera jako załącznik bibliografię prac polarnych pracowników Wyższej Szkoły Morskiej i Akademii Morskiej w Gdyni.

EN

The paper discusses topics of research conducted by the staff of the Gdynia Maritime University in the high latitudes of northern and southern hemispheres. In the years 1975-2015 the employees of the university have published a total of 231 articles, communications and reports and 14 books of monographic covering various aspects of polar research. Among the 142 works related to the Arctic positions and 103 positions – Antarctica. The basic research problems included issues variability and change hydro-climatic conditions in the Arctic and Antarctic, the formation of ice conditions and navigation in ice problems and issues of navigation in areas poorly recognized in terms of navigation, including research on the bottom bathymetry and geomorphology coasts. The article includes as an annex a bibliography of works polar employees Gdynia Maritime University.

3

Mathematical analysis and optimal control problems for the perturbation of the primitive equations of the ocean with vertical viscosity

Belmiloudi A.

Journal of Applied Analysis

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2002

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Vol. 8, nr 2

153-200

EN

In this paper we consider an oceanic domain in R3, in which there exists, at initial time, a current Uo, a pressure po and a density po. The perturbation U, p and p of the velocity, the pressure and the density are induced by a perturbation of the mean windstress. The equations are of Navier-Stokes type for the velocity and pressure, of transport-diffusion type for the density. They are linearized around a given mean circulation and modified by the physical assumptions including the Boussinesq approximation and the Hydrostatic approximation with vertical viscosity. The existence and uniqueness of the solution for the variational problem are studied for the three-dimensional problem, and for the two-dimensional cyclic problem derived by assuming a sinusoidal .x-dependence for the perturbation of mean flow. The latter corresponds to a modelization of tropical instability waves which are illustrated by El Nino phenomenon.

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Regional Oceanographic Database as a Modern Sea Research Tool

Piskozub J., Poraziński K., Sagan S., Walczowski W., Wichorowski M., Wyrwiński J

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

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2000

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Vol. 4, No 1

127-136

EN

Based on the experience acquired from working on the Regional Oceanographic Database at the IOPAS in Sopot a general view of database as a tool for supporting scientific research was presented. Article describes general structure, data flow and techniques of using the ROD.

5

Chemistry of Jurassic Seas and its bearing on the existing organic life

Gruszczyński M.

Acta Geologica Polonica

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1998

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Vol. 48, no. 1

1-29

EN

Study of Jurassic seawater chemistry comprised has revealed two successive stages of water mass organisation. The first stage, the unstable development of stratified zones, lasting until the mid Oxfordian, was characterised by large fluctuations of sea water temperatures and was interrupted by two episodes of opposite nature. The early Toarcian episode was related to expansion, whereas the Bajocian-Bathonian (B-B) episode was connected to temporary mixing of stratified seawater zones. The next stage, the breakdown of the stratified zones was characterised by stable,relatively warm seawater temperatures; it was also interrupted by boundary events, and depended, increasingly withtime, on oceanic circulation. The presence, development and retreat of stratified zones was manifested by massive CaCO3 precipitation and CaCO3 precipitation crises. Thus, interpretation of delta'13 C in terms of burial and reburial of C[org] in the sea, which requires existence and mixing of stratified seawater zones resulted in secular changes of CaCO3 saturation states. This led to the picture of a Jurassic "aragonitic sea", contrary to the generally accepted model. Those CaCO3 precipitation crises, emphasised by omission surfaces and specific mineral parageneses,suggested that Phanerozoic carbonate seas could have been suitable sites for "reverse weathering. Although geochemical perturbations did not coincide with the major mass extinctions postulated for the Jurassic, they expressed changes, of primary productivity, and in the structure of organic assemblages. These changes as well as detailed palaeoenvironmental conditions, may be monitored by the elemental tracer i.e. Ba concentrations.