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All Journal Jurnal Geosaintek Jurnal Rekayasa Hijau Community Development Journal: Jurnal Pengabdian Masyarakat Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Geosains Kutai Basin Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Rekayasa Geofisika Indonesia (Journal of Environmental Sustainability Management) Jurnal Geosaintek
Zetsaona Sihotang
Program Studi Geofisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mulawarman
Agriculture, Biological Sciences & Forestry Humanities Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Physics Public Health

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Observation and numerical modeling of physical oceanography in the Balikpapan Bay, East Kalimantan: Preliminary results Mutiara Rachmat Putri; Iwan P Anwar; Zetsaona Sihotang; Lamona I. Bernawis; Agus Setiawan; Muhammad Riza; Idris Mandang; Willem M. Tatipatta
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (882.918 KB) | DOI: 10.13170/depik.10.2.19259

Abstract

The Indonesian government plans to move the capital city from Jakarta to Penajam Paser Utara (PPU) which is the upstream area of Balikpapan Bay, East Kalimantan. There are several activities in the planned new capital city that potentially affect the condition of land and marine ecosystems, including clearing new land for housing and agriculture as well as expanding mining and petroleum areas. Directly or indirectly, these activities could affect the oceanographic conditions of Balikpapan Bay. For this reason, in order to obtain an up-to-date picture of Balikpapan Bay, an oceanographic survey was conducted in early March 2020. In addition, to support the analysis of marine dynamics in these waters and their predictions in the future, numerical simulations of hydrodynamic modeling were also carried out. Oceanographic observations indicate significant water stratification in the area about 20 km from the mouth of the bay. This result is also well illustrated in the hydrodynamic model numerical simulation, where there is a water loop at the confluence between salt and fresh water masses from two rivers 18-20 km from the mouth of Balikpapan Bay. Keywords:The national capital city of IndonesiaBalikpapan BayPhysical oceanography ObservationCoastal and marine Ecosystem
Observation and numerical modeling of physical oceanography in the Balikpapan Bay, East Kalimantan: Preliminary results Mutiara Rachmat Putri; Iwan P Anwar; Zetsaona Sihotang; Lamona I. Bernawis; Agus Setiawan; Muhammad Riza; Idris Mandang; Willem M. Tatipatta
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.2.19259

Abstract

The Indonesian government plans to move the capital city from Jakarta to Penajam Paser Utara (PPU) which is the upstream area of Balikpapan Bay, East Kalimantan. There are several activities in the planned new capital city that potentially affect the condition of land and marine ecosystems, including clearing new land for housing and agriculture as well as expanding mining and petroleum areas. Directly or indirectly, these activities could affect the oceanographic conditions of Balikpapan Bay. For this reason, in order to obtain an up-to-date picture of Balikpapan Bay, an oceanographic survey was conducted in early March 2020. In addition, to support the analysis of marine dynamics in these waters and their predictions in the future, numerical simulations of hydrodynamic modeling were also carried out. Oceanographic observations indicate significant water stratification in the area about 20 km from the mouth of the bay. This result is also well illustrated in the hydrodynamic model numerical simulation, where there is a water loop at the confluence between salt and fresh water masses from two rivers 18-20 km from the mouth of Balikpapan Bay. Keywords:The national capital city of IndonesiaBalikpapan BayPhysical oceanography ObservationCoastal and marine Ecosystem
Karakteristik Pasokan Batu Bara di PLTU “Damar” Periode 2019-2021 Berdasarkan Analisis Proksimat dan Nilai Kalor Qori Fajar Hermawan; Wasono Wasono; Nanda Khoirunisa; Muhammad Riza; Zetsaona Sihotang
Rekayasa Hijau : Jurnal Teknologi Ramah Lingkungan Vol 7, No 3 (2023)
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/jrh.v7i3.208-217

Abstract

ABSTRAKBatu bara adalah bahan bakar utama dalam proses pembangkitan listrik di sebuah pembangkit listrik tenaga uap, termasuk di PLTU (Pembangkit Listrik Tenaga Uap)”Damar” ini. PLTU “Damar” mendapatkan batu bara dari beberapa pemasok dari dua wilayah yaitu Provinsi Kalimantan Timur dan Provinsi Sumatra Selatan. Pasokan batu bara yang diterima oleh PLTU “Damar” pada tahun 2019, 2020, dan 2021 secara berurutan adalah 529.458,451 ton, 489.450,817 ton, dan 527.923,208 ton. Karakteristik pasokan batu bara yang diterima dilakukan berdasarkan hasil analisis proksimat dan nilai kalor terhadap sampel batu bara yang diambil pada proses pembongkaran. Analisis proksimat dan nilai kalor batu bara dilakukan oleh laboratorium berstandar nasional Indonesia dan telah terakreditasi Komite Akreditasi Nasional. Hasil analisis proksimat dan nilai kalor batu bara kemudian dirata-ratakan berdasarkan weighted mean. Berdasarkan analisis proksimat dan nilai kalor batu bara yang dipasok ke PLTU “Damar”memiliki nilai rata-rata untuk parameter kelembaban, zat terbang, karbon, abu dan nilai kalor sebesar 29,79%, 34,12%, 32,91%, 3,11% dan 4.657,12 kkal/kg pada periode 2019-2021. Berdasarkan nilai fuel ratio pada batu bara yang dipasok sebesar 0,964 menunjukkan bahwa batu bara tersebut tergolong batu bara golongan bituminus dengan zat terbang menengah-tinggi dan semua golongan sub-bituminus.Kata kunci: analisis proksimat, nilai kalor, fuel ratio, karakteristik batu bara ABSTRACTCoal is the main fuel in the process of generating electricity in a steam power plant, including at PLTU “Damar”. PLTU “Damar” obtains coal from several suppliers from two regions, East Kalimantan Province and South Sumatra Province. The total coal supply received by PLTU “Damar” in 2019, 2020 and 2021 are 529,450.451 tons, 489,450.817 tons and 527,923.208 tons respectively. The characteristics of the coal supply received are studied by the proximate analysis and the caloric value. The coal sample had been taken when the unloading the coal from vessel to coal yard then carried out by a national accredited laboraty in Indonesia. The results of the proximat analysis and the caloric value of the coal supplied to the PLTU “Damar”, has mean value for the parameter of moisture, volatile matter. Carbon fixed, ash content and caloric value of 29.79%, 34.12%, 32.91%, 3.11% and 4,657.12 kcal/kg in the 2019-2021 period. Based on the fuel ratio value of the supplied coal as 0.964, indicated the supplied coal is classified as bituminous coal with medium-high volatile matter and all sub-bituminous groups.Keywords: proximate analysis, caloric value, fuel ratio, coal characteristic
Observation and numerical modeling of physical oceanography in the Balikpapan Bay, East Kalimantan: Preliminary results Mutiara Rachmat Putri; Iwan P Anwar; Zetsaona Sihotang; Lamona I. Bernawis; Agus Setiawan; Muhammad Riza; Idris Mandang; Willem M. Tatipatta
Depik Vol 10, No 2 (2021): August 2021
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.10.2.19259

Abstract

The Indonesian government plans to move the capital city from Jakarta to Penajam Paser Utara (PPU) which is the upstream area of Balikpapan Bay, East Kalimantan. There are several activities in the planned new capital city that potentially affect the condition of land and marine ecosystems, including clearing new land for housing and agriculture as well as expanding mining and petroleum areas. Directly or indirectly, these activities could affect the oceanographic conditions of Balikpapan Bay. For this reason, in order to obtain an up-to-date picture of Balikpapan Bay, an oceanographic survey was conducted in early March 2020. In addition, to support the analysis of marine dynamics in these waters and their predictions in the future, numerical simulations of hydrodynamic modeling were also carried out. Oceanographic observations indicate significant water stratification in the area about 20 km from the mouth of the bay. This result is also well illustrated in the hydrodynamic model numerical simulation, where there is a water loop at the confluence between salt and fresh water masses from two rivers 18-20 km from the mouth of Balikpapan Bay. Keywords:The national capital city of IndonesiaBalikpapan BayPhysical oceanography ObservationCoastal and marine Ecosystem
Simulasi Tinggi Gelombang Laut Signifikan di Selat Makassar Pada Bulan Januari-Februari 2016 Muhammad Riza; Qori Fajar Hermawan; Zetsaona Sihotang; Nanda Khoirunisa; Idris Mandang
Jurnal Rekayasa Geofisika Indonesia Vol. 5 No. 03 (2023): Edisi Desember Jurnal Rekayasa Geofisika Indonesia (JRGI)
Publisher : Program Studi Teknik Geofisika FITK UHO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56099/jrgi.v5i03.30

Abstract

Knowledge of the characteristics of sea waves is very important for many maritime fields such as shipping safety, offshore industry, coastal area development, defense, and ship design. As the largest maritime country in the world, Indonesia is vulnerable to high sea waves. BMKG adopts the third generation wave model, namely WAVEWATCH-III which was developed by NOAA, USA. This model is used to predict the height and direction of sea waves in Indonesian waters. The purpose of this study is to determine the characteristics of the results of the WAVEWATCH-III wave model in the Makassar Strait. In January-February 2016 significant sea wave heights ranged from 0 m to 1.5 m and the direction of the waves came from the northeast in the Makassar Strait. Significant wave heights in January-February 2016 were not at a level that endangered shipping lanes in the Makassar Strait area. Keywords: Ocean Waves, Makassar Strait, Wave Model.
KARAKTERISTISASI BATU BARA BERDASARKAN ANALISIS PROKSIMAT PADA PASOKAN BATU BARA DI PLTU “PELITA” PERIODE 2019 Qori Fajar Hermawan; Nanda Khoirunisa; Muhammad Riza; Zetsaona Sihotang; Wasono Wasono
Jurnal Geosaintek Vol 9, No 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25023659.v9i3.16572

Abstract

Pembangkit Listrik Tenaga Uap (PLTU) “Pelita” menggunakan batu bara sebagai bahan bakar utama. Batu bara yang dipasok ke PLTU “Pelita” berasal dari Provinsi Sumatera Selatan, Kalimantan Selatan dan Kalimantan Timur. Pasokan batu bara yang diterima dilakukan analisis proksimat dan penentuan nilai kalor yang dilakukan oleh PT Surveyor Indonesia. Penelitian ini dilaksanakan untuk menentukan karakteristik batu bara pada PLTU “Pelita” periode 2019 berdasarkan hasil analisis proksimat dan nilai kalor. Korelasi antara nilai hasil analisis proksimat dan nilai kalor pada batu bara dilakukan berdasarkan analisis statistik menggunakan metode regresi linear. PLTU “Pelita” pada periode 2019 menerima batu bara sebanyak 17.485,537 ton dari Provinsi Kalimantan Selatan melalui dua kali pengiriman, 252.834,199 ton dari Provinsi Kalimantan Timur melalui 23 kali pengiriman dan 259.138,715 ton dari Provinsi Sumatera Selatan melalui 34 kali pengiriman. Pasokan batu bara periode 2019 ini memiliki nilai rata-rata untuk parameter kelembaban, kandungan zat terbang, kandungan abu, kandungan karbon dan nilai kalor batu bara secara berurutan sebesar 29,70%; 34,41%; 3,05%; 32,73%; dan 4.647,71 kkal/kg. Batu bara dari Provinsi Kalimantan Selatan, Kalimantan Timur dan Sumatera Selatan memiliki nilai rata-rata untuk parameter kelembaban sebesar 27,45%; 29,98%; dan 29,58%; kandungan zat terbang sebesar 36,74%; 35,26%; dan 33,44%; kandungan abu sebesar 4,37%; 2,70%; dan 3,30%;  kandungan karbon sebesar 31,44%; 31,94%; dan 33,60% serta nilai kalor batu bara sebesar 4.845,54 kkal/kg, 4.504,92 kkal/kg dan 4.773,68 kkal/kg. Korelasi kuat ditunjukkan oleh pengaruh nilai kelembaban (0,663) dan kandungan karbon (0,756) terhadap nilai kalor pada batu bara. Berdasarkan nilai fuel ratio, jenis batu bara yang diterima oleh PLTU “Pelita” periode 2019 adalah bituminus dengan zat terbang menengah-tinggi dan seluruh golongan subbituminus.
ANALISIS VARIABILITAS SPASIAL DAN TEMPORAL KONSENTRASI NITRAT DI LAUT HALMAHERA DAN LAUT BANDA MENGGUNAKAN METODE EMPIRICAL ORTHOGONAL FUNCTION (EOF) Sihotang, Zetsaona; Mandang, Idris; Munir, Rahmawati
GEOSAINS KUTAI BASIN Vol. 1 No. 1 (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.v1i1.163

Abstract

The East Indonesian ocean water is highly complex waters where it has become the passage of water masses from Pacific Ocean to Indian Ocean. Halmahera Sea and Banda Sea has an important role as one of the global ocean current trajectory from Pacific Ocean to Indian Ocean. The movement of water masses that occuring in this region has affect the condition and its fertility. One of the nutrients that affect the process of the growth of the pythoplankton and other microorganism is nitrate and it has become one of the indicators of waters fertility. This research aims to find out the effect of temperature and salinity on the change of nitrate concentration using Empirical Orthogonal Function (EOF) method. This method is used to separate the spatial and temporal data linkage in order to obtain the dominant spatial and temporal patterns. The data that used for the analysis was obtained from the output of the HYCOM (Hybrid Coordinate Ocean Model) model + NCODA Global 1/12º Reanalysis. The result of the analysis showing that the nitrate concentration was highly sensitive on the change of temperature in the ocean specifically in the Banda Sea region. The nitrate concentration increased during the East Monsoon where the sea surface temperatures dropped to 25ºC. In the West Monsoon, the sea surface temperature is warmer than usual so that the Banda Sea has a low nitrate concentration. In other hand, salinity did not show a significant effect on changes of nitrate concentration in the region of the Banda Sea and Halmahera Sea.
SOSIALISASI PERUBAHAN DAN PENGELOLAAN GARIS PANTAI DI PESISIR KECAMATAN SAMBOJA, KAB. KUTAI KARTANEGARA Khoirunisa, Nanda; Sihotang, Zetsaona; Riza, Muhammad; Mandang, Idris; Yusuf, Mustaid; Fajar Hermawan, Qori
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 (2023): Volume 4 Nomor 6 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i6.21061

Abstract

Perubahan garis pantai terjadi secara dinamis seiring waktu yang berdampak buruk terhadap wilayah pesisir. Kabupaten Kutai Kartanegara merupakan daerah pengembangan IKN yang beberapa wilayahnya berada di pesisir salah satunya adalah Kecamatan Samboja. Terdapat 8 Desa/Kelurahan di Kecamatan Samboja yang memiliki wilayah pesisir dan berbatasan langsung dengan laut yaitu Desa/Kelurahan Kampung Lama, Handil Baru, Sanipah, Teluk Pemedas, Samboja Kuala, dan Tanjung Harapan. Tujuan dari pengabdian ini yaitu mensosialisasikan hasil monitoring perubahan garis pantai dan laju luasan akresi dan abrasi pada periode Tahun 2000-2022 serta tindakan-tindakan preventif dalam menejemen pesisir kepada pemerintah setempat. Penggunaan metode pengeinderaan jauh adalah salah satu cara memonitoring perubahan garis pantai dan telah diterapkan sebelumnya. Data yang digunakan yaitu data sekunder berupa data citra satelit Tahun 2000 dan 2022. Pengolahan data garis pantai dilakukan dengan memanfaatkan citra Landsat 8-9 OLI/TIRS dan citra Landsat 7 ETM+. Teknik yang digunakan untuk penentuan garis pantai pesisir Kecamatan Samboja yaitu teknik analisis overlay. Adapun proses pemisahan antara wilayah permukaan bukan air (daratan) dengan wilayah badan air (laut) menggunakan metode Normalized Difference Water Index (NDWI). Pengabdian ini diharapkan mampu memberikan informasi kepada masyarakat di wilayah pengabdian sehingga dapat mengantisipasi bencana/kerusakan pesisir pantai serta dapat dijadikan acuan dalam pengembangan dan perencanaan yang berkelanjutan khususnya dalam pembangunan wilayah pengembangan IKN baru wilayah pesisir.
KARAKTERISTISASI BATU BARA BERDASARKAN ANALISIS PROKSIMAT PADA PASOKAN BATU BARA DI PLTU “PELITA” PERIODE 2019 Hermawan, Qori Fajar; Khoirunisa, Nanda; Riza, Muhammad; Sihotang, Zetsaona; Wasono, Wasono
Jurnal Geosaintek Vol. 9 No. 3 (2023)
Publisher : Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pembangkit Listrik Tenaga Uap (PLTU) “Pelita” menggunakan batu bara sebagai bahan bakar utama. Batu bara yang dipasok ke PLTU “Pelita” berasal dari Provinsi Sumatera Selatan, Kalimantan Selatan dan Kalimantan Timur. Pasokan batu bara yang diterima dilakukan analisis proksimat dan penentuan nilai kalor yang dilakukan oleh PT Surveyor Indonesia. Penelitian ini dilaksanakan untuk menentukan karakteristik batu bara pada PLTU “Pelita” periode 2019 berdasarkan hasil analisis proksimat dan nilai kalor. Korelasi antara nilai hasil analisis proksimat dan nilai kalor pada batu bara dilakukan berdasarkan analisis statistik menggunakan metode regresi linear. PLTU “Pelita” pada periode 2019 menerima batu bara sebanyak 17.485,537 ton dari Provinsi Kalimantan Selatan melalui dua kali pengiriman, 252.834,199 ton dari Provinsi Kalimantan Timur melalui 23 kali pengiriman dan 259.138,715 ton dari Provinsi Sumatera Selatan melalui 34 kali pengiriman. Pasokan batu bara periode 2019 ini memiliki nilai rata-rata untuk parameter kelembaban, kandungan zat terbang, kandungan abu, kandungan karbon dan nilai kalor batu bara secara berurutan sebesar 29,70%; 34,41%; 3,05%; 32,73%; dan 4.647,71 kkal/kg. Batu bara dari Provinsi Kalimantan Selatan, Kalimantan Timur dan Sumatera Selatan memiliki nilai rata-rata untuk parameter kelembaban sebesar 27,45%; 29,98%; dan 29,58%; kandungan zat terbang sebesar 36,74%; 35,26%; dan 33,44%; kandungan abu sebesar 4,37%; 2,70%; dan 3,30%; kandungan karbon sebesar 31,44%; 31,94%; dan 33,60% serta nilai kalor batu bara sebesar 4.845,54 kkal/kg, 4.504,92 kkal/kg dan 4.773,68 kkal/kg. Korelasi kuat ditunjukkan oleh pengaruh nilai kelembaban (0,663) dan kandungan karbon (0,756) terhadap nilai kalor pada batu bara. Berdasarkan nilai fuel ratio, jenis batu bara yang diterima oleh PLTU “Pelita” periode 2019 adalah bituminus dengan zat terbang menengah-tinggi dan seluruh golongan subbituminus.
Pengaruh kualitas batu bara terhadap produksi gas SO2 dan NOx: studi kasus PLTU “Lentera” Hermawan, Qori Fajar; Khoirunisa, Nanda; Sihotang, Zetsaona; Riza, Muhammad; Wasono, Wasono
Jurnal Pengelolaan Lingkungan Berkelanjutan (Journal of Environmental Sustainability Management) JPLB, Vol 9, No 2 (2025)
Publisher : Badan Kerjasama Pusat Studi Lingkungan (BKPSL) se-Indonesia bekerjasama dengan Pusat Penelitian Lingkungan Hidup IPB (PPLH-IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36813/jplb.9.2.213-232

Abstract

The “Lentera” power plant is a 130 MW coal-fired power plant facility. The quality of the supplied coal to the “Lentera” power plant were tested using proximate and ultimate analysis to determine sulphur and nitrogen content. The production of SO2 and NOX emissions from coal combustion was affected by the sulphur and nitrogen content in the coal. Emission levels were observed using the Continuous Emission Monitoring System (CEMS). This research was conducted to determine the effect of the sulphur and nitrogen content in coal on the production of SO2 and NOX gas at "Lentera" power plant during June-December 2020. The analysis was done based on statistical analysis using simple linear regression methods and analysis of variance. Based on the content of sulphur, nitrogen and caloric value, coal from East Kalimantan Province has a lower value than coal from South Sumatra Province. The content of sulfur and nitrogen significantly affected the production of SO2 and NOX emissions. The higher the sulfur and nitrogen content in coal showed the higher the production of SO2 and NOX emissions. The caloric value of coal did not show a correlation with the production of NOX emissions.
Co-Authors AGUS SETIAWAN Hermawan, Qori Fajar Idris Mandang Idris Mandang Idris Mandang, Idris Iwan P Anwar Lamona I. Bernawis Muhammad Riza Muhammad Riza Muhammad Riza Muhammad Riza Muhammad Riza Munir, Rahmawati Mutiara Rachmat Putri Nanda Khoirunisa Nanda Khoirunisa Nanda Khoirunisa Nanda Khoirunisa, Nanda Qori Fajar Hermawan Wasono Wasono Wasono Wasono Wasono, Wasono Willem M. Tatipatta Yusuf, Mustaid