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All Journal ILMU KELAUTAN: Indonesian Journal of Marine Sciences JURNAL TEKNOLOGI LINGKUNGAN Forum Geografi Journal of Geoscience, Engineering, Environment, and Technology MAJALAH ILMIAH GLOBE OLDI (Oseanologi dan Limnologi di Indonesia) Marine Research in Indonesia Indonesian Aquaculture Journal International Journal of Remote Sensing and Earth Sciences (IJReSES) Indonesian Journal of Oceanography Makara Journal of Science Amerta JURNAL REKAYASA KIMIA & LINGKUNGAN Jurnal Geosaintek
Ulung Jantama Wisha
Ministry of Marine Affairs and Fisheries
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TENDENCY FOR CLIMATE-VARIABILITY-DRIVEN RISE IN SEA LEVEL DETECTED IN THE ALTIMETER ERA IN THE MARINE WATERS OF ACEH, INDONESIA Rahmawan, Guntur adhi; wisha, ulung jantama
International Journal of Remote Sensing and Earth Sciences (IJReSES) Vol 16, No 2 (2019)
Publisher : National Institute of Aeronautics and Space of Indonesia (LAPAN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (778.66 KB) | DOI: 10.30536/j.ijreses.2019.v16.a3091

Abstract

Long-term sea level rise (SLR) leads to increasing frequency in overtopping events resulting from polar ice liquefaction triggered by rising global temperatures. Aceh province is directly bordered by the Indian Ocean, and is subject to the influence of ocean–atmosphere interactions which have a role in triggering temperature and sea level anomalies. Elevated sea level is possibly caused by temperature-induced water mass redistributions. This study aimed to prove that the Indian Ocean Dipole (IOD) and El-Nino–Southern Oscillation (ENSO) had an influence on sea level change in Aceh waters over the six years 2009–2015. Sea level anomaly (SLA) was identified using Jason-2 satellite data for the 2009–2015 period, to enable the mathematical prediction of SLR rate for further years. We found that SLR was approximately 0.0095 mm/year with an upward trend during the six years of observation. Overall, negative mode of IOD and positive phase of ENSO tend to trigger anomalies of sea level at certain times, and have a stronger influence on increasing SLA and sea surface temperature anomaly (SSTA) which takes place in a ‘see-saw’ fashion. Over the period of observation, the strongest evidence of IOD-correlated SLA, ENSO-correlated SLA and SSTA-correlated SLA were identified in second transitional seasons, with more than 50% of R2 value. The upward trend in SLA is influenced by climatic factors that successively control ocean–atmosphere interactions in Aceh’s marine waters. 
LAND SUITABILITY MODELING FOR FISHERY RESOURCE ENHANCEMENT IN THE PADANG PARIAMAN REGENCY, WEST SUMATERA, INDONESIA: GIS AND MULTI-CRITERIA EVALUATION APPROACHES Gemilang, Wisnu Arya; Wisha, Ulung Jantama; Rahmawan, Guntur Adhi; Ondara, Koko; Dhiauddin, Ruzana
Indonesian Aquaculture Journal Vol 19, No 1 (2024): (June, 2024)
Publisher : Agency for Marine and Fisheries Extension and Human Resources

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/iaj.19.1.2024.75-85

Abstract

[Land Suitability Modeling for Fishery Resource Enhancement in the Padang Pariaman Regency, West Sumatera, Indonesia: GIS and Multi-Criteria Evaluation Approaches] Land suitability analysis is required for successful aquaculture planning. Due to the geographical setting of the Padang Pariaman Regency, aquaculture development is likely hindered by the vulnerable coastal area. Suitability assessment of aquaculture projects is crucial to specify the best method espousing sustainable development in the study area. This study aims to select the most proper location to be developed as a center of shrimp aquaculture in the Padang Pariaman Regency. This study employed the multi-criteria decision-making (MCDM), and analytical hierarchy process (AHP) approaches. This study combined the GIS-based analysis, AHP, and MCDM to yield the most proper location for aquaculture development. The three sub-models (engineering, water quality, and infrastructure) are overlaid using the weighted linear combination (WLC) technique. The infrastructure sub-model resulted in the highest coverage of highly suitable criteria with 61.74%. By contrast, the highest percentage of the unsuitable category was found in the water quality sub-model with 17.67%. Of particular concern, 87.5 % of the study area is suitable for aquaculture development. The remaining region is categorized as highly suitable with 11.93%, found in the eastern Padang Pariaman. Thus, we conclude that developing shrimp aquaculture in the study area is possible. Still, the future environmental impacts should be considered beforehand.
Estimation of Suspended Particulate Matter Using Landsat 9 Imagery: Generating Algorithms and Spatio-Temporal Distributions Maslukah, Lilik; Sadewo, M. Firouz Dimas; Rochaddi, Baskoro; Widada, Sugeng; Wirasatriya, Anindya; Wisha, Ulung Jantama
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.29.1.15-28

Abstract

The fluctuation of suspended particulate matter (SPM) is essential to the biogeochemical cycle and ecological health of coastal waters. Anthropogenic activities potentially trigger an increase in SPM, so it needs to be monitored continuously. Spatial and temporal monitoring of SPM can be carried out cost-effectively with broad coverage using a remote sensing application. This study aims to build the SPM algorithm and estimate its temporal variability. The algorithm model in this study is based on an empirical formula between field data and reflectance data with the same acquisition. Water samples were taken from 100 stations in July 2022. Half were used for model building and the other for model validation. Suspended Particulate Matter was determined gravimetrically and estimated their temporal variability was based on Landsat 9 image records from December 2021 - November 2022. The results of the analysis show that the best algorithm for SPM estimation can be built based on coastal aerosol canals (B1), blue canals (B2), and green canals (B3) with the accuracy test result of (R2 = 0.68; RMSE = 5.551 mg.L-1; MAPE= 7.07%; Bias= 0.28). The SPM temporal fluctuations were generally higher in the west monsoon and lowered in the east monsoon, ranging from 30 to 70 mg.L-1. On the other hand, the spatial distribution shows a higher magnitude in the estuary than in the offshore waters, with a deviation of about 30 mg.L-1. Regional authorities can use the results obtained to improve the management of coastal water quality and monitoring systems.
Kerentanan Pesisir Terhadap Bencana Tanah Longsor Di Bungus, Sumatera Barat Dan Sekitarnya Menggunakan Metode Storie Gemilang, Wisnu Arya; Husrin, Semeidi; Wisha, Ulung Jantama; Kusumah, Gunardi
Jurnal Geosaintek Vol. 3 No. 1 (2017)
Publisher : Institut Teknologi Sepuluh Nopember

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Abstract

Daerah Teluk Bungus dan sekitarnya secara administratif termasuk dalam wilayah Kecamatan Bungus - Teluk Kabung terletak pada bagian Selatan Kota Padang – Sumatera Barat merupakan salah satu kawasan yang masuk dalam zona potensi terjadi gerakan tanah tinggi hingga menengah. Tulisan ini bertujuan untuk mengklasifikasikan tingkat kerentanan daerah rawan gerakan tanah daerah pesisir Teluk Bungus menggunakan metode Storie (Storie, 1978 ; Sitorus, 1995) berdasarkan karakteristik fisik berupa tataguna lahan, kelerengan, geologi dan curah hujan setempat. Klasifikasi tingkat kerentanan gerakan tanah menggunakan metode Storie di kawasan Bungus dan sekitarnya dan menghasilkan lima tingkat kerentanan gerakan tanah, yaitu sangat rendah, rendah, sedang, tinggi dan sangat tinggi. Secara umum klasifikasi tersebut menunjukkan bahwa sebagian besar lokasi longsor memang berada pada daerah dengan tingkat kerentanan gerakan tanah sedang hingga rendah. Kerentanan gerakan tanah di daerah penelitian dipengaruhi oleh kemiringan lereng dan litologi atau jenis tanah, serta curah hujan sebagai faktor pemicu terjadinya gerakan tanah.
Studi Variabilitas Upwelling Berdasarkan Data Angin, Suhu Permukaan Laut, Dan Klorofil-A Di Laut Flores Fikra, Harizal; Wijaya, Yusuf Jati; Kunarso, Kunarso; Wisha, Ulung Jantama
Indonesian Journal of Oceanography Vol 7, No 3 (2025): Indonesian Journal of Oceanography
Publisher : University of Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijoce.v7i3.27907

Abstract

Laut Flores merupakan salah satu perairan strategis di kawasan timur Indonesia yang memiliki potensi produktivitas laut tinggi. Fenomena upwelling yang terjadi di wilayah ini berperan penting dalam membawa massa air laut dari lapisan bawah yang kaya akan nutrien ke permukaan. Proses ini berkaitan erat dengan dinamika angin muson dan kondisi oseanografis setempat. Dalam penelitian ini, digunakan data satelit angin, suhu permukaan laut (SPL), dan klorofil-a untuk mengkaji variabilitas klimatologis upwelling secara spasial dan temporal selama periode 2008 hingga 2022. Perhitungan indeks upwelling dilakukan menggunakan pendekatan Ekman transport dan Ekman pumping guna melihat kontribusi gaya angin terhadap dinamika vertikal air laut. Wilayah studi dibagi menjadi dua transek berdasarkan sebaran geografis, dan masing-masing dianalisis menggunakan pemrograman Python serta divisualisasikan secara spasial. Hasil analisis menunjukkan bahwa fenomena upwelling dominan terjadi pada musim timur, khususnya bulan Juni hingga Agustus, yang ditandai dengan peningkatan kecepatan angin, penurunan SPL, dan lonjakan konsentrasi klorofil-a. Nilai indeks upwelling tertinggi tercatat di Transek A, sedangkan pada Transek B Ekman pumping bukan merupakan faktor dominan dalam memicu terjadinya upwelling pada wilayah tersebut.
KERENTANAN TINGGALAN BUDAYA BAWAH AIR SITUS KARANG BUI DI PERAIRAN PANTAI UTARA JAWA BARAT Gemilang, Wisnu Arya; Ridwan, Nia Naelul Hasanah; Wisha, Ulung Jantama; Rahmawan, Guntur Adhi; Ilham; Tahir, Zainab
AMERTA Vol. 38 No. 1 (2020)
Publisher : Penerbit BRIN (BRIN Publishing)

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Abstract

Abstract. The Vulnerability of Underwater Cultural Heritages in Karang Bui Site, Northern Coast of West Java. Underwater remains which found in Karang Bui site, Karawang-Subang waters are originated from the colonial period of Vereenigde Oostindische Compagnie (VOC) and occupation period of the Kingdom of the Netherlands in Indonesia. Research on the vulnerability of the Karang Bui site has been conducted by the Ministry of Marine Affairs and Fisheries in 2017-2018. Research methods including observation of sea area; diving activities for site documentation, seabed profiles mapping, and the use of Side Scan Sonar. Besides looting activities that occurred in the past, the threats toward Karang Bui site preservation nowadays are from human and natural factors. Karang Bui site is located in shallow water with a depth of 5-12 m, so during the maximum elevation, the waves height and current velocity which forms at that location is increasing. Sedimentation level in Karang Bui site is also high caused by many rivers estuary around the site. The site is located within the area of P.T. Pertamina petroleum refineries which is likely the spill oil will threaten the archaeological remains. Furthermore, Karang Bui site is located near Patimban, Subang port development area which also the shipping line. Planning and protection measurement needs to be carried out immediately by related institutions and local governments. Thus, due those various vulnerability factors, the lifting of Karang Bui underwater artifacts is important to be done. Abstrak. Tinggalan bawah air yang ditemukan di Karang Bui, perairan Karawang-Subang, berasal dari masa Vereenigde Oostindische Compagnie (VOC) dan masa penjajahan Kerajaan Belanda di Indonesia. Penelitian terhadap kerentanan Situs Karang Bui telah dilakukan oleh Kementerian Kelautan dan Perikanan (KKP) pada tahun 2017-2018. Metode penelitian meliputi observasi kawasan laut, penyelaman bawah air untuk dokumentasi situs, pemetaan profil dasar laut, penggunaan side scan sonar. Selain aktivitas penjarahan pada masa lalu, ancaman terhadap kelestarian Situs Karang Bui saat ini berasal dari alam dan ulah manusia. Situs Karang Bui berada di perairan dangkal dengan kedalaman 5-12 m sehingga saat elevasi maksimal, tinggi gelombang dan kecepatan arus yang terbentuk di lokasi tersebut semakin meningkat. Tingkat sedimentasi di Situs Karang Bui juga tinggi karena banyak muara sungai di sekitar situs. Lokasi situs berada di area kilang-kilang pengeboran minyak bumi milik P.T. Pertamina, yang kemungkinan tumpahan minyak akan mengancam tinggalan arkeologis. Selain itu, lokasi situs berada di dekat area pembangunan pelabuhan Patimban, Subang, juga merupakan alur pelayaran. Perencanaan dan tindakan pelindungan Situs Karang Bui perlu segera dilakukan oleh institusi terkait dan pemerintah daerah. Oleh karena berbagai faktor kerentanan tersebut, pengangkatan artefak bawah air Karang Bui sangat penting untuk dilakukan.
UPAYA KONSERVASI KAPAL KARAM GOSONG NAMBI SEBAGAI BUKTI ADANYA JALUR PERDANGAN MARITIM MASA LALU DI KABUPATEN PESISIR SELATAN, SUMATRA BARAT Wisha, Ulung Jantama; Ridwan, Nia Naelul Hasanah; Dhiauddin, Ruzana; Rahmawan, Guntur Adhi; Kusumah, Gunardi
AMERTA Vol. 38 No. 1 (2020)
Publisher : Penerbit BRIN (BRIN Publishing)

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Abstract

Abstract. Conservation Efforts of Gosong Nambi Shipwreck as an Evidence of the Past Maritime Trading Routes in Pesisir Selatan Regency, West Sumatra. The coastal region of West Sumatra has become one of the main trading routes in the 15th-19th centuries so there is no doubt that this area has many archaeological remains both underwater, coastal area, and buried underground. One of the underwater archaeological remains in this region is the discovery of a shipwreck at the Gosong Nambi coral site which is administratively located in Pesisir Selatan Regency, West Sumatra Province in 2015. This study aims to provide an overview of the current condition of the Gosong Nambi Shipwreck site. Research activities include collecting information, searching the shipwreck’s location, recording data, measuring the visible dimensions, and sketching the shipwreck, has been done. Visually, it is a small size vessel which was predicted as a cargo ship from the 1900s that might sail from Bengkulu to West Sumatra and crashed into Gosong Nambi coral (Atoll) and then sank. The shipwreck is partially buried in the sand and piles of the dead coral in the stern and most of the ship’s hull had been looted by scarp metal hunters. Natural factors also trigger site vulnerability so it is advisable to excavate. Conservation efforts are necessary to be done with a CRM approach which can have a positive impact on society on socio-economic aspects without harming any related parties. Abstrak. Wilayah pesisir Sumatra Barat menjadi salah satu jalur perdagangan utama pada abad ke-15--19 sehingga tidak diragukan lagi wilayah ini memiliki banyak tinggalan arkeologis baik yang di bawah air, wilayah pantai, maupun terkubur di bawah tanah. Salah satu tinggalan arkeologi bawah air di wilayah ini adalah temuan kapal karam di situs gugusan karang Gosong Nambi yang secara administratif terletak di Kabupaten Pesisir Selatan, Provinsi Sumatra Barat pada tahun 2015.Tujuan dari penelitian ini adalah untuk memberikan gambaran kondisi terkini situs kapal karam Gosong Nambi. Aktivitas penelitian berupa pengumpulan informasi, pencarian lokasi situs, perekaman data, pengukuran dimensi kapal yang terlihat, dan membuat sketsa kapal, telah dilakukan. Secara visual, kapal tersebut termasuk kapal kecil yang diprediksi sebagai kapal barang dari tahun 1900-an yang mungkin berlayar dari Bengkulu menuju ke Sumatra Barat dan menabrak gugusan karang (atol) Gosong Nambi dan akhirnya tenggelam. Kondisi kapal karam tersebut sebagian terkubur dalam pasir dan tumpukan karang mati pada bagian buritan dan sebagian besar lambung kapal telah dijarah oleh para pemburu besi tua. Faktor alam juga menjadi pemicu kerentanan situs sehingga disarankan untuk melakukan ekskavasi. Upaya konservasi perlu dilakukan dengan pendekatan CRM yang dapat berdampak positif terhadap masyarakat pada aspek sosial ekonomi tanpa merugikan berbagai pihak yang terkait.
Using Pollution Index to determine water quality in Banda Aceh waters, Indonesia ondara, Koko; Wisha, Ulung Jantama; Agustina, Sri; Atmadipoera, Agus saleh; Purnawan, Syahrul
Jurnal Rekayasa Kimia & Lingkungan Vol 17, No 1 (2022): Jurnal Rekayasa Kimia & Lingkungan (June, 2022)
Publisher : Chemical Engineering Department, Syiah Kuala University, Banda Aceh, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23955/rkl.v17i1.25155

Abstract

The northern waters of Banda Aceh are connected with the Indian Ocean, the Andaman Sea, and the Malacca Strait, thus making the study of water quality parameters in this region is important for enviromental management. In this study, water quality parameters are measured spatially and then continued with assessing the pollution index. The results can be helpful for development planning and coastal pollution mitigation in Banda Aceh. The data was collected from 21 seawater samples from 11 stations representing the water of Banda Aceh on 10-11 September 2019. VanDorn bottles were used to store the seawater samples for laboratory analysis. Several parameters such as temperature, salinity, and pH were measured in situ, while other parameters were tested in the laboratory. Most heavy metal parameters showed values below the minimal and maximal value limit detection of the instrument, indicating a small potential for heavy metal contamination. However, the pollution index (PI) indicates the potential for water pollution dominated by nitrate and phosphate with a value that exceeds the water quality standard. The indications are shown from the high aquaculture and anthropogenic activities around the coast of Banda Aceh.
Co-Authors Agus Atmadipoera Anindya Wirasatriya Aprizon Putra Baskoro Rochaddi Dhiauddin, Ruzana Dhiauddin, Ruzana Dhiauddin, Ruzana Fikra, Harizal Gunardi Kusumah Guntur Adhi Rahmawan, Guntur Adhi Hanah Khoirunnisa, Hanah ILHAM Ilham Ilham Koko Ondara, Koko Kunarso Kunarso Lilik Maslukah Muhammad Zainuddin Lubis Ridwan, Nia Naelul Hasanah Sadewo, M. Firouz Dimas Semeidi Husrin Sri Agustina, Sri Sugeng Widada Syahrul Purnawan Tahir, Zainab Wisnu Arya Gemilang, Wisnu Arya Yusuf Jati Wijaya