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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 65 Documents
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Karakteristik Multitemporal Arus Permukaan Laut di Perairan Tuban, Jawa Timur Muhammad Tezar; Mifta Irmayunita; Ahmad Mualim; Faruq Faruq; Luhur Moekti Prayogo
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.53

Abstract

Sea currents are the mass transfer of water from one place to another caused by wind, density differences, and tides. In general, the characteristics of ocean currents in Indonesian waters are influenced by wind and tides. In shallow waters (coastal areas), ocean currents can be generated by ocean waves, wind, and tides. Meanwhile, tides are the main driving force in narrow and semi-enclosed waters (straits and bays). This study aims to determine the multitemporal differences in current movement patterns in 2010-2012 in the waters of Tuban, East Java. Research data is obtained from NOAA and calculated direction and speed, and then the results are presented in the form of a map. From the research results that have been done, it can be concluded that the current velocity in the waters of Tuban in 2010-2012 is relatively the same (the difference in current speed is not significant). In 2010 and 2011, the average current speed was 0.06 m/s, where the current moved from west to east and north. Then in 2012, the average current speed was 0.11 m/s, where the current moved from west to east. It is necessary to conduct a more in-depth study to determine the effect of tides on current movement, especially in shallow waters. In addition, further research is expected to use data from survey results directly in the field for validation so that research results will be more accurate.
Identifikasi Jenis-Jenis Mangrove Di Pantai Ya’ang, Desa Labuhan, Kecamatan Brondong, Kabupaten Lamongan Raka; Nor Sa’adah; Perdana Ixbal Spanton M; Amir Yarkhasy Yuliardi
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.58

Abstract

Brondong District, Lamongan Regency has many types of mangroves in the coastal area and has a coastline reaching 47 km, Lamongan Regency and a mangrove forest area of around 53.37 Ha.This research aims to determine the types and characteristics of mangroves. The method used is explorative survey.The results of the study showed that Brodong District, Lamongan Regency had various types of mangroves as many as 6 types of mangroves consisting of Avicennia marina, Avicennia alba, Rhizophora mucronata Rhizophora stylosa, Bruguiera gymnorrhiza and Sonneratia alba.
Pasang Surut dan Arus Pasang Surut di Area Dermaga Pelabuhan Perikanan Pantai, Muncar, Banyuwangi Rifqy Firdausyah; Rudi Siap Bintoro; Supriyatno Widagdo
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.66

Abstract

Hydro-Oceanographic Parameters are the main factor in supporting the development and periodic maintenance of a port. The research was conducted in November 2021. The data in the study were obtained from observations in the field. The data used in this research is in the form of tidal data and tidal currents. Based on the results of data processing for 1 month in November 2021, the Muncar waters have a mixed tide prevailing semi-diurnal type. The highest tide value during November occurred on November 17 2021 at 22:00 WIB with a water level of 2.6 m and the lowest tide occurred on November 18 2021 at 05:00 WIB with a water level of 0.4 m. Currents move from the Bali Strait towards the Indian Ocean. Just before high tide, the tidal currents move from east to west (entering the anchor pond) with a speed of 0.40 – 0.64 m/s. At low tide, the current moves from West to East (leaving the anchor pond) with a speed of 0.42 – 0.58 m/s.
Karakteristik Curah Hujan Monsunal Pada Periode ENSO dan IOD (Studi Kasus: Lampung, Surabaya dan Jayapura) Sisca Ayu Renitasari; Supriyatno Widagdo; Rudi Siap Bintoro
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.69

Abstract

The variability of rainfall in the Indonesian region is strongly influenced by the ENSO and IOD phenomenon. The purpose of this study is to describe the characteristics of the ENSO and IOD phenomena over a period of 31 years, compare the characteristics of rainfall under normal conditions and characteristics due to ENSO and IOD phenomenon, and analyze the monsoon rain area (Lampung, Surabaya, Jayapura) which are more influenced by ENSO and IOD phenomenon. The results showed that in the first decade to the second decade the incidence of La Niña decreased by 3.4% and then increased in the last decade by 4.3%, as the dominant La Niña incidence in weak intensity has increased every decade. At the time of the IOD phenomenon in the first decade to the second decade there was an increase in Positive IOD of 15.2% and then an increase which tends to be drastic in the last decade by 27.2%. In the Lampung and Surabaya areas, when El Niño and Positive IOD occur, the beginning of the rainy season tended to come later, meaning the dry season was longer, which occurred from May to November. When La Niña and Negative IOD occurred, the rainy season began earlier in June to November and experiences the rainy season throughout the year. In the Jayapura area, rainfall tended to occur throughout the year during the ENSO and IOD phenomena. The influence caused
Karakteristik Cuaca Maritim untuk Keselamatan Pelayaran di Perairan Popoh, Tulungagung Tasya Olivia Rinekso; Supriyatno Widagdo; Rudi Siap Bintoro
Jurnal Riset Kelautan Tropis (Journal Of Tropical Marine Research) (J-Tropimar) Vol 5 No 1 (2023): April
Publisher : Universitas Hang Tuah

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30649/jrkt.v5i1.70

Abstract

Popoh Waters has a bay that contains a fishing boat port, a Fish Auction Place (TPI), and a Fishing Port (PPI). Indonesia has many cases of fishing boat accidents caused by bad weather. It is important to know maritime weather information to minimize fishing boat accidents. This study aims to identify the characteristics of wind, rainfall, sea waves in each season, identify the seasons that are dangerous for fishing boats and their effects on fishermen's catches. The results of the processing showed that Popoh waters had wind characteristics with a category that can endanger fishing boats in the East season with a top speed of 8.41 m/s. The characteristic of rainfall which had the highest rainfall was the West monsoon with the highest intensity of 87 mm. The characteristics of the waves in Popoh waters had waves that could endanger the sailing of fishing boats in the East season with the highest wave condition of 1.93 m.
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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