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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Matematika & Sains
Mutiara R. Putri
Program Studi Oseanografi, Jurusan Geofisika & Meteorologi Fakultas Matematika dan Ilmu Pengetahuan Alam, ITB
Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science Mathematics

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Pemodelan Sirkulasi Air Laut Dan Penyebaran Logam Berat Cadmium (Cd) di Kolam Pelabuhan Tanjung Priok Mutiara R. Putri; Dadang K. Mihardja
Jurnal Matematika & Sains Vol 4, No 1 (1999)
Publisher : Institut Teknologi Bandung

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Abstract

In this study we had been used mathematical model that consist of hydrodynamics and pollutant transport two dimensional depth avaraged models. The driven forces of current that considered in the hydrodynamics model are tidal, monsoon wind, and river discharges. The factors that considered in the waste transport model are advection by current, turbulence diffusion, and load waste sources of cadmium (Cd). The model assumtions are constantly load waste from rivers and persistent waste (chemical reactions and degradation by bioactivities are assumed zero). Simulation results show that in Tanjung Priok harbour the distributions of cadmium follow the current pattern and the consentrations has been over ambient which allowed. The average accuracy of model in this study is about 50 to 60%.
INFLUENCES OF UPWELLING DURATION AND INTENSITY BASED ON SEA SURFACE TEMPERATURE ANOMALY TOWARD PRIMARY PRODUCTIVITY VARIABILITY IN INDONESIAN WATERS Putri Kemili; Mutiara R. Putri
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 4 No. 1 (2012): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.85 KB) | DOI: 10.29244/jitkt.v4i1.7807

Abstract

The existence of upwelling generally increases waters productivity. However, the influence of upwelling could be different based on location and time. The difference of upwelling duration and intensity (strength) can affect the variability of primary productivity in Indonesian waters. The estimation of primary productivity during the period of January 2000 to December 2007 was conducted using Carbon-based Production Model (CbPM). Sea Surface Temperatures (SST) Anomaly data on the same period was used as parameter to determine the upwelling conditions. The study locations were west coast of Sumatra, south waters of East Java to East Nusa Tenggara, Banda Sea, Gulf of Bone, Maluku Sea and Halmahera Sea. The results showed that in the south of East Java and Banda Sea have upwelling with longer duration (3–4 months) and higher intensity (decrease in temperature reached >2°C below average), the primary productivity was higher than other locations. Halmahera Sea showed the existence of upwelling only at certain time when El Niño occurred, while Gulf of Bone and Maluku Sea showed the occurrence of upwelling during southeast season only with 2–3 months of duration and vary intensity, which shown with the decrease in temperature ranging from 0,5–1,8oC below average. El-Niño and dipole mode in Indonesia waters generally caused longer duration and stronger intensity of upwelling producing more productivity than normal years.Keywords: Upwelling, Primary Productivity, Carbon-based Production Model
Co-Authors Dadang K. Mihardja Putri Kemili