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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA BULLETIN OF THE MARINE GEOLOGY
Suharyanto, Hamzah Haru Radityo
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Earth & Planetary Sciences

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Assessment of Sensitivity and Validity Hydrodynamic Model in Cisadane Using Delft3d Flow Model Pasma, Gumilang Ramadhan; Suharyanto, Hamzah Haru Radityo; Khoirunnisa, Hanah; Wijayanti, Reni; Gumbira, Gugum; Rachman, Reno Arief
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 29, No 1 (2024): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.29.1.133-146

Abstract

The National Capital Integrated Coastal Development (NCICD) program was prioritized as a disaster reduction technology within the annual target of BRIN in 2022. It is a part of the North Java Coastal Integrated Development Program project. A coastal reservoir development plan at the Cisadane River estuary is one of the outcomes. In this case, hydrodynamic modelling is needed to acquire hydrodynamic properties under the existing condition of Cisadane downstream, and it applied the Delft3D-FLOW model. The bathymetric data used in this simulation was obtained from the assimilation of national bathymetric data with a grid spacing of 180 m and field survey data with a horizontal resolution of 10 m and transect spacing of 200 m seaward of the Cisadane estuary. It has interpolated in a regular structured grid with 100 m and 50 m grid spacing. In addition, other data used are three hourly wind data downloaded from the European Centre for Medium-Range Weather Forecasts (ECMWF) and the daily discharge of the Cisadane River in 2021. Astronomical water level data generated from TPXO 7.2 and TPXO 8 were used in the boundary conditions. These data are simulated using the two and three-dimensional flow model Delft3D-FLOW during November 1 – 15, 2021, using four manning coefficients (n) values, which are 0.03; 0.035; 0.04; and 0.045. The validation formulation used Normalization Root Mean Square Error (NRMSE), resulting in 5.3 - 9.6% for all the manning values and domains. The highest correlation coefficient of current velocity (u-v components) is acquired in the 10 km2 domain with 0.797 for the L3 (bottom layer).
Studi Karakteristik Sedimen Menggunakan Metode Statistik Gradistat Untuk Mendukung Pengembangan Pelabuhan Patimban Rachman, Reno Arief; Firmansyah, Raka; Aziiz, Shafan Abdul; Catur Istiyanto, Dinar; Suharyanto, Hamzah Haru Radityo; Rahili, Nurkhalis; Widagdo, Aloysius Bagyo; Wibowo, Mardi; Khoirunnisa, Hanah
Buletin Oseanografi Marina Vol 14, No 1 (2025): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v14i1.60085

Abstract

Pengembangan Pelabuhan Patimban di Subang diharapkan sebagai penyokong pelabuhan Tanjung Priok di Jakarta yang sudah tidak mampu memenuhi kebutuhan bongkar muat dari para pelaku usaha khususnya di Jawa Barat. Dalam melakukan perencanaan dan pengembangan pelabuhan, salah satu hal utama yang perlu dipertimbangkan adalah masalah sedimentasi. Proses sedimentasi di perairan sangat terkait dengan karakteristik sedimen. Tujuan penelitian ini adalah untuk mengetahui pola sebaran karakteristik sedimen dasar seperti kadar air, berat jenis, gradasi, tekstur sedimen, ukuran d50 butir sedimen dan analisis statistik sedimen dasar sehingga dapat mendukung rencana pengembangan pelabuhan. Metode yang dipakai adalah pengambilan sampel sedimen di lapangan, pengujian sampel sedimen di laboratorium, analisis sedimen secara statistik dan analisis deskriptif karakteristik sedimen dasar menggunakan metode Gradistat. Berdasarkan hasil kajian diketahui nilai kadar air 59,06-210,046 %, berat jenis 1,951–2,494 g/cm3, nilai d50 0,07–0,16 mm, ukuran rerata butir 64,0-86,5 µm, sortasi sedimen moderately sorted (terpilah cukup), analisis statistik sedimen tipe platykurtic, jenis lithologi didominasi oleh lanau dan pasir. Diharapkan hasil penelitian ini dapat membantu pengelolaan sedimentasi, merancang pondasi bangunan pantai dan struktur lainnya secara tepat dan efisien. 
SEDIMENT CHARACTERISTICS TO SUPPORT THE REVITALIZATION OF TPPI TUBAN PORT, EAST JAVA, INDONESIA Rachman, Reno Arief; Wibowo, Mardi; Widagdo, Aloysius Bagyo; Rahili, Nurkhalis; Yuniardi, Rizaldi Caesar; Suharyanto, Hamzah Haru Radityo; Hamid, Affandy; Subarkah, Aris; Suranto, Suranto; Khoirunnisa, Hanah
BULLETIN OF THE MARINE GEOLOGY Vol 39, No 1 (2024)
Publisher : Marine Geological Institute of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/bomg.39.1.2024.874

Abstract

TPPI Tuban Port is located in Tuban Regency, East Java. Geologically, the rocks are composed of reef limestone in the Paciran Formation, which is Pliocene–Early Pleistocene. The importance of complying with jetty capacity standards and water conditions in commercial ports is emphasized as the key to maintaining smooth port operations, making port revitalization a necessity. One of the main aspects to consider is the sedimentation problem, closely related to sediment characteristics. A deep understanding of sediment dynamics is essential for designing effective solutions to ensure the sustainability of port operations. This research aims to determine the distribution pattern of bed load characteristics such as water content, specific gravity, gradation, sediment texture, d50 size of sediment grains, and statistical analysis of bed load sediment in the west and rainy seasons, where the influence of sediment from land is very large. so it is hoped that it can support the port revitalization plan. The methods used include taking sediment samples in the field, testing sediment samples in the laboratory, statistical sediment analysis, and descriptive analysis of bed load characteristics using the Gradistat method. Based on the study results, the water content value ranges from 22.446% to 218.289%, and the specific gravity ranges from 2,100 g/m³ to 2.690 g/cm³. Additionally, the grain size varies from 0.080 mm to 0.900 mm, and the average grain size ranges from 261.1 μm to 2657.5 μm. Sediment sorting is dominated by very poorly sorted materials, with statistical analysis indicating a dominance of the very platykurtic type. The lithological type is predominantly sand.
Co-Authors Aziiz, Shafan Abdul Catur Istiyanto, Dinar Firmansyah, Raka Gumbira, Gugum Hamid, Affandy Hanah Khoirunnisa, Hanah Mardi Wibowo Pasma, Gumilang Ramadhan Rachman, Reno Arief Rahili, Nurkhalis Reni Wijayanti Subarkah, Aris Suranto Suranto Widagdo, Aloysius Bagyo Yuniardi, Rizaldi Caesar