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KARAKTERISTIK ARUS LAUT JAWA PADA MUSIM BARAT DI BEBERAPA KEDALAMAN Pasaribu, Roberto Patar; Sagala, Herlina -; Rahman, Abdul -; Cahyani, Amelia -
JURNAL GEOLOGI KELAUTAN Vol 22, No 1 (2024)
Publisher : Pusat Penelitian dan Pengembangan Geologi Kelautan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32693/jgk.22.1.2024.823

Abstract

Arus laut merupakan pergerakan massa air secara horizontal yang dapat disebabkan oleh beberapa faktor seperti tiupan angin, perbedaan densitas maupun pasang surut laut. Arus laut merupakan parameter hidro-oseanografi yang dinamis dan mempunyai peran penting dalam transpor nutrien, larva, material, dan lain sebagainya. Tujuan penelitian ini untuk mengetahui karakteristik arus Laut Jawa di beberapa kedalaman. Metode penelitian adalah metode kuantitatif berupa analisis data dan deskriptif. Data yang digunakan diperoleh dari pengukuran arus mengunakan alat Vessel Mounted ADCP (Acoustic Doppler Current Profiler) yang dilakukan pada bulan Desember 2019 dengan menggunakan kapal riset Pusat Riset Oseanografi-Badan Riset dan Inovasi Nasional. Dari hasil pengolahan dan analisa data diperoleh di Laut Jawa kecepatan arus minimal rata-rata nya adalah 0,003 m/s sedangkan kecepatan arus maksimal rata-rata nya adalah 0,393 m/s. Kecepatan arus ter lambat adalah 0.001 m/s terjadi pada kedalaman 30 m sedangkan kecepatan arus tercepat adalah 0,410 m/s terjadi pada kedalaman 35 m. Secara umum arah arus yang terjadi di Laut Jawa pada monsun barat adalah menuju timur laut.
The Potential of Cynodon Dactylon and Lolium Perenne 'Brightstar' as Phytoremediator Agents in Dealing with the Problem of Sea Water Intrusion in the North Coastal Area of Karawang Rizkiah, Riza; Sewiko, Roni; Pranoto, Aris Kabul; Pasaribu, Roberto Patar; Djari, Anthon Anthonny; Rahman, Abdul; Ismail, R Moh; Handayani, Endy; Luciana, Luciana; Mulyana, Muhammad Agus
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.651

Abstract

Sea water intrusion is a process where sea water is mixed with underground water around the coast, causing the ground water to become salty because it is contaminated by sea water which is rich in salt. Sea air that enters the ground causes the air to become unfit for consumption and causes the land to become unproductive for planting. People in the Pakis Jaya area, Karawang face difficulties, especially regarding land use for agricultural activities. This is because the land used for cultivating plants is saline soil with a high salt content. Phytoremediation is a method used to clean air or soil contaminated with pollutants, by using the ability of plants to absorb these substances. Cynodon Dactylon and lolium Perenne Brightstar plants are a type of grass that can be used to reduce high salt levels in the soil because these plants are able to live in places with high salinity and also have the ability to reduce salinity by absorbing chloride ions in it. The methods used in this research consisted of: Sampling Process, Plant Acclimatization Stage, Salinity Concentration Test before and after planting grass in Soil Media. The test results showed that the salt content in the soil before planting was 19.20 dS/m and after planting it was 0.02-0.03 dS/M.
COMPARISON OF GROWTH OF MANGROVE TYPES OF RHIZOPHORA SPP USING POLYBAG AND HYDROPONIC MEDIA IN KARIMUNJAWA NATIONAL PARK, CENTRAL JAVA Pasaribu, Roberto Patar; Djari, Anthon Anthonny; Rahman, Abdul; -, Aris Kabul
Jurnal Segara Vol 19, No 1 (2024): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v19i1.12702

Abstract

Mangroves are one of the ecosystems that grow in places that are influenced by the around the coast and river mouths. The technique of planting and maintaining mangrove seedlings varies from place to place depending on the media and conditions in the field. The purpose of this study was to compare the growth of mangrove species Rhizophora spp on two different nursery media, namely polybag and hydroponic media. This research was conducted in Karimunjawa National Park, Central Java, with an experimental research method. The results showed the growth rate of mangrove seedlings using polybag media was an average of 0.64cm per fortnight, while with hydroponic media it was 0.44cm per fortnight. The first leaf growth with polybag media occurred in the fifth week after planting while for hydroponic media the leaves grew in the sixth week. The survival rate on polybag media is 92.31%, while in hydroponic media it is 84.61%
MAPPING CRITICAL MANGROVE LAND USING GEOGRAPHIC INFORMATION SYSTEM TECHNOLOGY IN THE MANDEH AREA - SOUTH PESIR DISTRICT Pasaribu, Roberto Patar; Pranoto, Aris Kabul; Djari, Anthon Anthonny; -, Amelia Fitrina
Aurelia Journal Vol 6, No 2 (2024): October
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/aj.v6i2.14030

Abstract

The mangrove ecosystem is an ecosystem that has high biodiversity. The mangrove ecosystem has physical functions, including protecting the coast from abrasion and erosion. This ecosystem also functions as a place for spawning, breeding and rearing for various marine organisms. This research aims to determine critical mangrove land using Geographic Information System Technology (GIS) applications and remote sensing techniques as an alternative method for mapping the condition of critical land in the mangrove ecosystem. The research location is in the Mandeh area, Koto XI Tarusan District in Pesisir Selatan Regency, West Sumatra Province. Based on data processing and analysis as well as on-site observations, the critical level of mangrove forests in the Mandeh area is not damaged 119,065 Ha (46.41%), damaged 105,325 Ha (41.05%) and very damaged 32,164 Ha (12.54%).The village areas that were damaged were in Sungai Nyalo Village, while those that were not damaged were in Teluk Raya Village.