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Ima Nurmalia Permatasari
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ima.nurmalia@hangtuah.ac.id
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jtropimar@hangtuah.ac.id
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Gedung F4 Fakultas Teknik dan Ilmu Kelautan - Jl. Arief Rahman Hakim No.150, Keputih, Kec. Sukolilo, Kota SBY, Jawa Timur 60111.
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Jurnal Riset Kelautan Tropis (J-Tropimar)
Published by Universitas Hang Tuah
ISSN : 26567091     EISSN : 26563150     DOI : https://doi.org/10.30649/jrkt.v3i2
Core Subject : Science,
Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Energy
1. Oseanografi Fisika 2. Oseanografi Geologi 3. Kimia Laut dan Biologi Laut 4. Ekologi dan Pencemaran Laut 5. Bioteknologi Kelautan 6. Penginderaan Jauh Kelautan 7. Sistem Informasi Geografik Kelautan 8. Hidrografi 9. Meteorologi Laut 10. Akustik Kelautan 11. Pengelolaan sumberdaya pesisir dan laut.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 5 Documents
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Search results for , issue "Vol 2 No 2 (2020): November" : 5 Documents clear
Dampak Virus Corona (Covid-19) Terhadap Sektor Kelautan dan Perikanan : A Literature Review Mery Nova Sari; Fransiska Yuliasara; Mahmiah
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.41

Abstract

The Corona Virus Pandemic (Covid-19) shook mankind around the world including Indonesia in early 2020. The coronavirus outbreak and the issuance of regulations on PSBB (Large-Scale Social Restrictions) make changes in community activities outside the home, whether it's job, education and even transportation. The decline in activity if it lasts a long time will certainly have an impact on the decline in people’s daily income, especially local fishermen and fish farmers. Not only that, some fish storage sheds (cold storage) occurs accumulation of fish or over stock because it can not be supplied outside the area as usual. This article is intended to discuss the impact of Covid-19 on the marine and capture fisheries sector. The results of the literature study show the impact of Covid-19 on the marine and fisheries sector, namely the decline in fish prices in some regions by up to 50% due to declining demand such as some fish export companies closed, many hotels and restaurants closed which are the main buyers of fish and seafood.
Variabilitas Temperatur dan Salinitas Secara Musiman Di Perairan Selatan Jawa Ima Nurmalia Permatasari
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.44

Abstract

The condition of the Java sea is strongly influenced by changes in surface oceanographic parameters and the atmosphere where surface currents originating from the east follow the winds that blow gradually throughout the year. Changes in currents caused by the influence of the wind cause the movement of the sea surface layer to generate horizontal mixing, which in turn will encourage a shift in the mass of water. The movement pattern of water masses will affect fluctuations in surface oceanographic parameters such as sea surface temperature, chlorophyll-a and salinity. Temperature and Salinity data are obtained from satellite image data which are then visualized using ODV (Ocean Data View) software with a vertical direction from the surface to near the seabed and then analyzed the vertical distribution of temperature, salinity and density representing the West, Transition I, East and Transition seasons. II. The sea surface temperature during the west season and transitional season I is higher than during the east season (August) and the transitional season 2. The salinity value of the sea surface in the west season and transitional season I is lower than during the east season and transitional season 2.
Adsorpsi Pb (II) Oleh Arang Aktif dari Tumbuhan Mangrove Avicennia marina Rina Andayani; Yuli Ainun Najih
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.43

Abstract

Heavy metals are substances that are harmful to human health. Heavy metals are usually found in the form of dissolved ions. One type of heavy metal is lead (Pb (II)). One way to reduce the Pb (II) content is by using the adsorption process using activated charcoal. Several materials from nature have been studied as materials of active charcoal for adsorption of heavy metal Pb (II), including oil palm shells, cassava peels, siwalan coir, and bamboo. Avicennia marina magrove plant is a species that is quite widely available in Surabaya. This study aimed to analyze the adsorption process of activated charcoal from mangrove Avicennia marina against heavy metal Pb (II). The method used includes three stages, namely (1) carbonization; (2) charcoal activation; (3) adsorption of Pb (II). From the research that has been done, it could be concluded that the activation process of charcoal into activated charcoal using ZnCl2 activator can open the pores on the surface of the charcoal, so that activated charcoal can adsorb Pb. The greater the initial concentration, the lower the adsorption% with the same amount of adsorbent. The process of Pb (II) isothermal adsorption by activated charcoal from the mangrove Avicennia marina, more closely follows the Langmuir isothermal adsorption model which had a value of R2 = 0.9968, while for the Freudlinch isotherm adsorption model had a value of R2 = 0.9474.
Sebaran Nitrat dan Kelimpahan Fitoplankton di Pantai Tanah Merah dan Pulau Semujur Muh. Yusuf; Aditya Pamungkas; Mu’alimah Hudatwi; Irvani
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.45

Abstract

The waters of Tanah Merah beach waters and Semujur Islands waters are both located in Bangka Tengah Regency. Geographically it can be indicated Tanah Merah is quite far from residential areas, while the other locations are in the inhabited small island waters (Semujur). These different geographical conditions can cause the content of nitrate nutrients to be different because the main source of nitrate nutrients comes from human activities. High nitrate nutrients will affect the abundance of phytoplankton in local waters. This study aims to determine the value and nitrate in relation to the abundance of phytoplankton in the sea. Moreover this research was applied in Tanah Merah beaches waters and Semujur Island waters, Bangka Tengah Regency, from February to April 2020. The results shown that the nitrate content in Tanah Merah beaches waters was 0.011-0.026 mg/LT (St.1-St.4) which was lower compared of 0.046-0.10 mg/L (St.9-St.12) at Semujur Island waters. Phytoplankton abundance data and Species Diversity Index (H ') show that the Tanah Merah beaches waters are 111,000-134,000 cells/L and the H' index is 2.06-2.16 lower than the phytoplankton abundance data in Semujur Island waters of 110,000 - 208,000 cells/L and the H 'index of 2.22-2.29. Others evident to support that data are the current velocity in Tanah Merah beaches waters ranges from 0.014-0.21 m/s less than Semujur Island waters at 0.22-0.32 m/s.
Pola Sedimentasi di Teluk Lamong, Surabaya, Jawa Timur Fitri Indah Kuntari; Rudi Siap Bintoro; Nirmalasari Idha Wijaya
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 2 No 2 (2020): November
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v2i2.46

Abstract

This research to analyze sedimentation patterns in the waters of the Lamong Bay. This research was conducted in August 2018 until May 2019. The sampling of basic sediment were using sediment grab and the sampling of suspended sediment were using nansen bottle. The data used was tide data, river discharge, velocity and direction data of sediment data. The data which was obtained from survey would be processed in the Hidro – Oceanographic Laboratory of Hang Tuah University. The data includes data on grab sediment samples and until suspended sediment. For modeling sedimentation patterns was using software SMS using river discharge data and the results of processing suspended sediment. The result data from processing models in when the high tide the sediment concentration tends to be high and at low tide the concentration tends to be low. When the high tide ocean current would lead to the bay to the river and at low tide the ocean currents will flow into the river.

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