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Mustaid Yusuf
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Earth & Planetary Sciences

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STUDI TRANSPOR SEDIMEN DI PERAIRAN PANTAI KALIMANTAN TIMUR DENGAN MENGGUNAKAN MODEL HIDRODINAMIKA An’am Prasetiyo; Mustaid Yusuf; Mislan Mislan
JURNAL GEOSAINS KUTAI BASIN Vol 2 No 1 (2019)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v2i1.348

Abstract

The study was conducted in Balikpapan Bay, Adang Bay, and Apar Bay to simulate sediment transport induced by tidal current. The sediment transport information is very important for environmental management as well as environmental impact analysis. This study has applied COHERENS (Coupled Hydrodynamical Ecological model for Regional and Shelf Seas). Barotropic mode of COHERENS has performed the simulation from 15 December 2012 to 14 January 2013, using 8 tidal component delivered from NAO99b as generation force. The model simulation result are verified using tides of observation data from 15 December to 31 December 2012 the Semayang Port. Verification result shows a good agreement between simulation data and observation. The RMSE is about 0.158 meter. In Balikpapan Bay the result shows higher concentration points is are located at Port area and Riko River Estuary, with sediment transport around 1.1577 x10-4 (kg/m2)/s, on Adang Bay the concentration point is located at inner part of Bay, with transport sediment around 1.6499 x10-4 (kg/m2)/s, and at Apar Bay concentration point is located at outer part of Bay, with sediment transport value around x10-15 (kg/m2)/s.
STUDI NUMERIK TIDAL FRONT DI PERAIRAN TELUK BALIKPAPAN MENGGUNAKAN MODEL HIDRODINAMIKA Muhammad Fauzi Ramadhana; Mustaid Yusuf; Saat Mubarrok
JURNAL GEOSAINS KUTAI BASIN Vol 1 No 2 (2018)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v1i2.289

Abstract

Model hidrodinamika dua dimensi COHERENS (Coupled Hydrodynamical Ecological Model for Regional and Shelf Seas) telah diaplikasikan untuk mengetahui pola tidal front di perairan sekitar Teluk Balikpapan. Simulasi dilakukan pada bulan Juli 2014 dengan menggunakan delapan komponen pasang surut utama sebagai gaya pembangkit. Konstanta harmonik dari komponen pasang surut yang diterapkan pada batas terbuka tersebut diperoleh dari NAO99b. Hasil simulasi model diverifikasi dengan membandingan antara data elevasi pasang surut dan data DISHIDROS yang diindikasikan dengan nilai RMSE (Root Mean Square Error) sebesar 0,15 meter. Hasil verifikasi menunjukkan bahwa hasil simulasi model memiliki kesesuaian yang cukup baik. Hasil penelitian menunjukkan bahwa nilai critical dari log (H/U3) di perairan Teluk Balikpapan adalah sekitar 3 yang mana nilai tersebut diindikasikan sebagai garis tidal front.
Numerical Study of Hydrodynamics in the waters of Balikpapan Bay using Finite Volume Method Suci Erniya Rahman; Mustaid Yusuf; Yuki Novia Nasution
JURNAL GEOSAINS KUTAI BASIN Vol 5 No 1 (2022)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v5i1.793

Abstract

Suci Erniya Rahman. 2021. Numerical Study Hydrodynamic in the waters of Balikpapan Bay using Finite Volume Method. Supervised by Dr. Sc. Mustaid Yusuf, M.Si. and Yuki Novia Nasution, S.Si., M.Sc. Faculty of Mathematics and Natural Sciences, Mulawarman University. The hydrodynamic model FVCOM (Finite Volume Coastal Ocean Model) using the approach method finite volume has been applied to determine the distribution of tidal current patterns in the Balikpapan Bay area. The simulation was carried out for 30 days using river discharge and tides as generating forces. The simulation results has verified by using the Root Mean Square Error (RMSE) method on observation data in the Balikpapan Bay area. The results of the simulation and observation verification have a good agreement, which is 0.09917 meters. The smaller (closer to zero) RMSE value, is the better results of the observation and simulation match. The results of study showed that the pattern and average current velocity in Balikpapan Bay for 15 days (11-26 October 2012) was dominant out of the bay.
Studi Pengaruh Suhu Permukaan Laut Di Selat Makassar Terhadap Intensitas Curah Hujan Kota Balikpapan Retni Kusmardiyanti; Mustaid Yusuf; Djayus Djayus; Rahmiati Rahmiati
JURNAL GEOSAINS KUTAI BASIN Vol 5 No 2 (2022)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v5i2.794

Abstract

Rainfall is the amount of water that falls on the ground surface during a certain period measured in units of height and is caused by various factors, such as sea surface temperature, wind direction and speed, humidity and so on. This study aims to determine how the influence of the sea surface temperature of the Makassar Strait on the intensity of rainfall in the city of Balikpapan. The data used in this study are sea surface temperatures taken at 4 coordinate points in the Makassar Strait, they are -2oS and 118oE, -1oS and 118.25oE, ​​0oEQ and 118.5oE, ​​1oN and 119.25oE and 2oN and 119.5oE and rainfall data in Balikpapan City. taken at 4 points of data collection stations, they are -1.16oS and 116.84oE, -1.16oS and 116.88oE, -1.2oS and 116.84oE and -1.2oS and 116.88oE. The data was taken for 3 years, from 2017 to 2019. This study uses a correlation analysis, where the results obtained indicate that the sea surface temperature in the Makassar Strait quite affects rainfall in the city of Balikpapan. The highest correlation is 0.601217435, which is a strong correlation and has a positive value. Keywords : Rainfall, Sea Surface Temperature, Correlation Analysis
Studi Numerik Upwelling di Daerah Perairan Kalimantan Timur Restu Agesta Dwi Maulana; Mustaid Yusuf; Devina Rayzy Perwitasari
JURNAL GEOSAINS KUTAI BASIN Vol 4 No 1 (2021)
Publisher : Geophysics Study Program, Faculty of Mathematics and Natural Sciences, Mulawarman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/geofisunmul.v4i1.739

Abstract

The aim of this study is to predict the potential upwelling areas around East Kalimantan Waters, based on vertical current velocity, temperature, and salinity information through the COHERENS (A Coupled Hydrodynamical-Ecological Model for Regional and Shelf Seas) simulation, a three-dimensional hydrodynamic model. The model was performed simulation for one year period (1st January – 31th December 2016). Four major tidal constituents (M2, S2, K1, O1) and wind speed have used as generating force. The simulation results showed the upwelling areas as well as downwelling. The upwelling area located mostly in the southern parts of the Makassar Strait while only a few areas located in the vicinity of the East Kalimantan coastline.
Co-Authors An’am Prasetiyo Devina Rayzy Perwitasari Sutaji Putri Djayus Djayus Laksono Trisnantoro Muhammad Fauzi Ramadhana Rahmiati Munir Restu Agesta Dwi Maulana Retni Kusmardiyanti Saat Mubarrok Suci Erniya Rahman Yuki Novia Nasution