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Ima Nurmalia Permatasari
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Program Studi Oseanografi, Fakultas Teknik dan Ilmu Kelautan, Universitas Hang Tuah Jl. Arif Rahman Hakim No. 150, Sukolilo, Keputih, Surabaya 60111
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Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar)
Published by Universitas Hang Tuah
ISSN : 26563150     EISSN : 26567091     DOI : http://dx.doi.org/10.30649/jrkt.v2i2
Core Subject : Science, Social,
Earth & Planetary Sciences Energy Environmental Science
aim: Researchers and teachers for publishing the original articles of review articles Scope: Oceanography Physics, Geological Oceanography, Marine Chemistry and Marine Biology, Marine Ecology and Pollution, Marine Biotechnology, Marine Remote Sensing, Marine Geographic Information Systems, Hydrography, Marine Meteorology, Marine Acoustics, and coastal and marine resource management.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 5 Documents
 1 
Search results for , issue "Vol 5 No 2 (2023): November" : 5 Documents clear
Review Penentuan Residence Time Partikel pada Perairan Wahyuni, Dwi Sukma Wahyuni; Kisnarti, Engki A Kisnarti
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 2 (2023): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i2.68

Abstract

Residence time is the length of time a particle lives in water. Particle movement can be analyzed by using current circulation parameter. This research study aims to determine and describe the length of time the particles stay in the waters. The models used to determine particle movement are hydrodynamic numerical models, especially the Lagrange Finite Volume Coastal Ocean Model (FVCOM) and CRT (Coastal Residense Time) models. In describing the movement of particles modeled using Mike 21 FM. The results from the CRT model with high resolution have a smaller error value, compared to using the FVCOM model. The characteristics of the CRT itself use a logarithmic method so that it has the same grid to determine the length of residence time of the particles.
Review Potensi Siklon Tropis yang Menyebabkan Banjir Pantai Ni Made Praptiwi Rahayu; Engki A. Kisnarti
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 2 (2023): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i2.72

Abstract

Tropical cyclones can also be said to be large storm systems that occur every year. The pressure difference that occurs from vortex circulation activity causes tropical cyclones to form in waters close to the equator. Tropical cyclones are one of the triggers for hydrometeorological disasters. The impact of tropical cyclones can be felt in Indonesia, both directly (flash floods) and indirectly (lower temperatures) when far from the source of tropical cyclones. To be able to determine the movement of tropical cyclone Paddy, this was done using the satellite image observation method, namely the Himawari-8 satellite. Tropical cyclones can also be measured by comparing several models, to predict tropical cyclones. This model helps to predict in order to minimize the impact of tropical cyclones which can cause coastal flooding. This data can be processed with a first order model because it is more stable. Therefore, satellite imagery can be used to see, understand and analyze the movement of tropical cyclones.
Blue Energy dari Mikroalga Chlorella sp. sebagai Bahan Baku Biodiesel Rheamyta Carissa Siregar; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 2 (2023): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i2.73

Abstract

Biodiesel is a renewable clean bioenergy because it can be produced from vegetable oil. One of the efforts to increase energy independence in the marine sector (blue energy) is to prepare potential alternative fuels derived from microalgae. Microalgae have advantages over other types of plants, because the growth of microalgae is very productive and the growth rate is very fast and does not require fertile land, so it does not compete with food crops. Some microalgae have an oil content of up to 80% of their body mass. Aims to provide information about differences in extraction methods and identification of oil content with microalgae type Chlorella sp. which can be used as raw material for biodiesel. This research method uses FTIR (Fourier Transform Infrared) and GC-MS (Gas Chromatography-Mass Spectrometry) analysis. The results showed that the soxhlet extraction method was able to separate biodiesel and to identify biodiesel raw materials, the percentage of microalgae oil and compound content was obtained. The most dominant compounds are Linoleic Acid compounds, Palmitic Acid compounds, which are dominated by Stearic Acid compounds.
Sebaran Timbal (Pb) di Perairan Wonorejo, Surabaya Jawa Timur Tiento Rifqy Pribadi; Mahmiah; Rudi Siap Bintoro
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 2 (2023): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i2.74

Abstract

 Wonorejo waters are one of the coasts that receive river flows (DAS) Jagir Wonokromo, Wonorejo, and Gunung Anyar rivers, Surabaya City. The Wonorejo coast is suspected of experiencing a decrease in water quality as there is a threshold value stipulated by the Decree of the Minister of Environment Number 51 of 2004 Research on the level of Pb pollution needs to be carried out because Wonorejo Waters are waters that are drained by industrial waste disposal around the estuary The method used in analyzing the content of heavy metal Pb is using Atomic Absorption Spectophotometry (AAS). From the research results, it was found that the highest Pb concentration value in this study was 0.31 mg/L while the lowest concentration value was 0.11 mg/L. The results of this study indicate that Wonorejo waters can be declared polluted because the concentration exceeds the NAV set by the Ministry of Environment and Forestry, which is 0.008 mg/L. The correlation between supporting parameters such as pH and salinity has a relationship with a fairly strong correlation value. The distribution of Pb is uneven due to the weak current velocity.
Evaluasi Kesesuaian Penempatan Keramba Jaring Apung Pulau Gili Ketapang, Probolinggo Ekavia Vinca Mulativa; Viv Djanat Prasita; Rudi Siap Bintoro
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 2 (2023): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i2.75

Abstract

The research aims to analyze or evaluate the suitability of placing Floating Net Cages on the island of Gili Ketapang using Hydro-Oceanographic parameters. The sampling method in this study used purposive sampling method in December 2022. After obtaining primary data and secondary data then the overlay process is carried out to determine the suitability of land for KJA. While the method used to analyze the results of the study using the scoring method. The type of tides on the island of Gili Ketapang is mixed double daily, the greatest current velocity value of 0.3-0.4 m / s in the transitional season 2, the highest waves in the west season with a height of 0.3-0.4 m. The results of research on several oceanographic parameters on Gili Ketapang Island can be concluded that the conditions on Gili Ketapang Island are categorized as feasible for grouper cultivation with Floating Net Cages.

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