Mutiara Putri

Bandung Institute of Technology | ITB · Faculty of Earth Sciences and Technology

The first model of oxygen transport was formulated by August Krogh. However, the investigations conducted have yet to yield a complete analytical model and a widely applicable solution for One-Dimensional (1D) network construction. The research sought to provide numerical and analytical solutions for the oxygen transfer model in mitochondrial cells...

This study aimed to describe the correlation between water quality, phytoplankton abundance, and diversity in Balikpapan Bay, where the Indonesian government plans to move the national capital city. Observations were made at eight stations to collect data on water quality and phytoplankton during the neap tide. Phytoplankton were found in nine spec...

A mass fish kill is often occurring in Lake Maninjau. A lack of oxygen has reportedly resulted in numerous fish kills, including the recent lake Maninjau condition. Deoxygenation of lake water is a natural phenomenon that often occurs after heavy rain events and low sunlight intensity. Additionally, during the strong wind for a long period, the dec...

The concentration of chlorophyll-a is crucial in assessing marine productivity and harmful algal blooms. This study utilized ocean color reanalysis data from 1 January 2019 to 31 December 2021. The distribution of chlorophyll-a concentration and its relationship to various environmental parameters is analyzed with Principal Component Analysis (PCA)...

This research aims to understand the sediment characteristic of Cirebon waters using a grain size trend analysis (GSTA). The GSTA can be used to determine sediment physical characteristics and demonstrate the sedimentary processes. A total of 32 seabed surface sediments were analyzed by measuring the size of sedimentary grains using the Mastersizer...

Ocean temperatures increased during the 20th century and are predicted to continue to rise during the 21st century. Simultaneously, the extreme phenomena of shorter time ocean warming, known as Marine Heatwaves (MHWs), are also taking place. The present study used the Daily Optimum Interpolation Sea Surface Temperature (DOISST) v2.1 with a spatial...

This research aims to understand the sediment characteristic of Cirebon waters using a grain size trend analysis (GSTA). The GSTA can be used to determine sediment physical characteristics and demonstrate the sedimentary processes. A total of 32 seabed surface sediments were analyzed by measuring the size of sedimentary grains using the Mastersizer...

Balikpapan Bay is a narrow bay waters and there are estuaries of rivers, as well as part of the Makassar Strait. One important factor in a bay is flushing time, which is the length of time a particle that enters a bay is released back into the open sea. The longer the flushing time in a bay, the more likely the bay will be polluted. If the rinsing...

Histori kenaikan suhu permukaan laut (SPL) telah terjadi sejak revolusi industri dunia. Secara alamiah kejadian letusan gunung yang dahsyat dapat pula mempengaruhi suhu air laut hingga kedalaman laut tertentu. Suhu air laut ini sangat mempengaruhi kandungan panas laut, yang berperan penting dalam mengatur kondisi iklim yang terjadi di bumi. Kandung...

Understanding hydrodynamics in Bay of Bengal (BoB) is crucial because of its connectivity to local extreme weather, ocean fronts, pollutions, and fishing activities. This study aims to describe the hydrodynamics of BoB, including the gyre and the temperature-salinity profile during the monsoon. The research was conducted based on simulating a three...

The Indonesian Seas play an important role in the marine global environment, from the oceanographic point of view as well as from the bioenvironmental perspective, since a large population of nearly 400 million people is living directly or indirectly in contact with these waters affecting the marine environment. In this chapter, we describe the his...

The primary source of environmental problems in Jakarta Bay’s waters is the change in hydrodynamics caused by reclamation and land-derived waste from the 13 watersheds that discharge into the bay. In June and December 2006 and 2015, hydrodynamic and trajectory simulations were conducted in Jakarta Bay to determine the distribution of plastic debris...

There are many studies on ocean currents transporting plastic marine debris using hydrodynamic models and trajectories that have been carried out. However, it is still constrained to be applied in Indonesian waters. Therefore, this research aims to obtain the movement patterns of plastic marine debris, influenced by the dynamics of currents in Indo...

Manado Bay is a complex waterway located in Manado City, North Sulawesi, Indonesia. It is an entry point for the Indonesia Trough-Flow, and its circulation is affected by the seasonal winds. Manado City has no debris net on its river estuaries. Therefore, marine debris can easily be carried away by the ocean currents and accumulate in the tourism a...

The physical and hydrodynamic conditions in the Banda and Northern Arafura Seas (BAS) during northwest monsoon (February 2014) were investigated using a three-dimensional baroclinic nonlinear numerical model-the Hamburg Shelf Ocean Model (HAMSOM). This study found that northwesterly winds induced eastward surface currents that transported relativel...

Balikpapan Bay is enclosed water influenced by freshwater from river runoff and saline water from Makassar Strait. The exchange of water mass was examined by 3D numerical model simulation-Hamburg Shelf Ocean Model (HAMSOM) with horizontal resolutions approx. 150 m and 10 vertical layers applied in Balikpapan Bay. The thirteen tidal components, dail...

Marine debris can be a significant problem when it enters the ocean. One of the areas, which has a marine debris problem is Cirebon Coast. Such a problem occurs due to the high human population and activities in this particular coastal area. An effective cleaning method is required to prevent this problem. However, to determine the cleaning method,...

Inner Ambon Bay is used for fishery research by the government. One of the species that has been cultivated is seabass because it has high economic value. Seabass cultivation in floating net cages has been developed by Ambon Marine Aquaculture Institute (BPBL-Ambon). The characteristics of seawater in Inner Ambon Bay (IAB) based on the observation...

These microplastics can be found near sources of waste or have spread to waters near remote islands, in fragment, fiber, film, or styrofoam. The 5Gyres Expedition 2018, using KLM Sea Safari VII, sailed along Nusa Tenggara, Indonesia, on 21-29 July 2018. One of the objectives of this expedition was to collect data on the abundance of microplastic ma...

Avrionesti; Hermawan, W.; Putri, M.R.; Diastomo, H.; Badriana, M.R.; Surya, M.Y.; Abdurrahman, U.; Suprijo, T., and Park, H., 2021. Anthropogenic carbon analysis in eastern Sumatra waters, Indonesia. In: Lee, J.L.; Suh, K.-S.; Lee, B.; Shin, S., and Lee, J. (eds.), Crisis and Integrated Management for Coastal and Marine Safety. Journal of Coastal R...

This study aims to determine the variability of rainfall on the north coast of Java, namely the areas of Cirebon, Tegal, and Semarang. Daily rainfall data for the period January 2017-June 2021 from three meteorological stations were used to analyze rainfall periodicity. Fast Fourier Transform (FFT) is proposed to convert data from time series domai...

Monsoon currents and Indonesian Throughflow (ITF) have an essential role in the current Indonesian water system. The movement of current/water masses with non-uniform bathymetric conditions will affect the water column's stability in Indonesian waters. Therefore, this study aims to obtain the current dynamics and stability of the water column in In...

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...

Studies from various sectors are needed regarding the plan to move the capital city of the Republic of Indonesia from Jakarta to Penajam Paser Utara. The aquatic ecosystem that needs attention is Balikpapan Bay which is located in the vicinity of these activities. One of the factors that influence this is global warming. Therefore, it is necessary...

The Lombok Strait that located between the island of Bali and Lombok is one of the seas in Indonesia that connects the Pacific Ocean and the Indian Ocean. Therefore, the characteristics of the Lombok Strait waters get influence from those oceans. In this research, the analysis of water masses in the Lombok Strait waters are investigated and analyse...

The Arafura Sea is a relatively shallow water basin (less than 200 m) which is subjected to monsoonal winds and affected by the Banda Sea circulation. During the southeast monsoon (May to September) there is evidence of upwelling in this region which is indicated by the cooler SST (Sea Surface Temperature) and elevated chlorophyll concentration, es...

Inner Ambon Bay has been used as a location for fish farming. The mean seasonal of chemical parameters as much as 3,92 – 6,52 ppm for dissolved oxygen, the surface concentration of nitrate and phosphate each one is 0,05 – 0,143 ppm and 0,014 – 0,6 ppm, meanwhile the pH reach 7,95 – 8,44. The mean seasonal of physical parameters about 30,3 – 34,4 ‰...

Northern Ambon Coast has a unique characteristic in term of biodiversity, including Macroalgae and Echinodermata. This research aims to determine the distribution of nutrients in the territorial waters of North Ambon in 2017 and 2018 and their effects on the distribution of Macroalgae and Echinodermata. Seawater samples were obtained in 26 sampling...

Variations of volume transport in the Halmahera Sea are strongly influenced by the El Nino Southern Oscillation (ENSO). Based on the Southern Oscillation Index (SOI), in 2011 La Nina event took place with a strength of 3.02, while in 2015 El Nino occurred with a strength of-2.6. This paper discusses the variation of transport volume caused by the E...

Malacca Strait (MS) has an important role and potential for many countries. It is a major transportation route for oil and commodities across continents. In addition, various activities such as shipping, fishing, aquaculture, oil drilling, and energy are also carried out in MS. Tides strongly affect the MS environment so that it becomes a major par...

Saat awal monsun Asia musim panas (onset summer of Asia monsoon) di bulan Juni-Juli-Agustus, perairan sekitar Pulau Simeulue, Aceh, terpengaruh oleh kejadian upwelling di Samudra Hindia. Hal ini diduga mempengaruhi siklus gas karbondioksida antara laut dan udara di perairan sekitar Pulau Simeulue, Aceh. Pada kegiatan survei Ekspedisi Widya Nusantar...

The summer Asian monsoon (onset summer of Asia monsoon) occurs in June-July-August. The sea around Simeulue Island, Aceh, is affected by upwelling from the Indian Ocean. Within this period the effect of the carbon dioxide gas cycle between the sea and air in the area around the Island is predicted. The 2017 #coastal chapter Widya Nusantara (EWIN) E...

This work aimed to determine the hydrodynamics of the Malacca Strait (MS) and the part of the South China Sea (SCS). The study uses the two-dimensional numerical model with a finite-difference method. The results show that the sea surface heights in MS and the part of SCS are reversed and consistent with assimilation data that derived from Simple O...

Pangandaran Bay is a bay with small sea waves so that many fishermen have settled and fish here. Over time, Pangandaran Bay has developed into a famous beach tourist destination and tends to produce marine debris. Therefore, the purpose of this study is to collect data on the abundance of marine debris with microplastic (size <5 mm) in Pangandaran...

In this research the composition of water masses in the North Sulawesi (Sangihe Talaud) waters as part of the Indonesian Throughflow is investigated and analysed by using the Optimum Multi Parameter Analysis (OMP). The data used is the World Ocean Atlas data (WOA 13) in 1° x 1° latitude longitude resolution. Main data are the salinity, temperature...

This Pilot Study aimed at improving the information on the state of the Indonesian marine environment that is gained from satellite data. More than 2000 historical and actual synthetic aperture radar (SAR) images from ENVISAT ASAR and Sentinel-1A C-SAR, respectively, were used to produce oil pollution density maps of two regions of interest (ROIs)...

The Porong Estuary is an estuarine ecosystem influenced by the Porong River’s interaction with the Java Sea. This estuary plays a significant ecological role, acting as source that provides nutrients and organic materials that are then transported through the river and mixed in with the tidal currents. Some aquatic biota, for example crabs (Scylia...

Thermal energy which stored in upper ocean mixed layer will be released in the form of longwave radiation flux up (LW Up). LW Up is a longwave that emitted from sea surface to atmosphere. Variability of upper ocean mixed layer has influence on ocean thermal capacity and then affected LW Up variation. The area of interest of this research was west o...

Ambon Bay is divided into two parts, Inner Ambon Bay (IAB) and Outer Ambon Bay (OAB) which separated by 10 m narrow canal called sill. It causes IAB and OAB has different water dynamics. Generally, circulation dynamics at Ambon Bay affected by upwelling process in Banda Sea during southeast monsoon. During that period, tidal upwelling brought high...

Buku Pengenalan Oseanografi untuk Guru Sekolah Dasar Laut Indonesia yang sangat luas dan indah dengan berbagai potensi yang ada di dalamnya. Literasi bahwa Kehidupan berasal dari Laut memberikan ide kegiatan “Menebar Biru Menuai Mutiara Indonesia”, yang memiliki arti menebarkan kecintaan dan ilmu pengetahuan tentang laut (Biru) kepada siswa sekol...

Maluku and Sulawesi Seas are parts of Indonesian Large Marine Ecosystem in the east area which has an important role for Indonesian fisheries activities. Those areas are facing the climate change phenomena that could change their marine ecosystem quality. Marine carbonate system is very important for controlling the circulation of CO2 between the a...

Coastal areas have a correlation with the physical conditions in the sea, one such as the effect of sea level rise on the area. This research discuss about the hazard of sea level rise on the coast of Jakarta. There are several methods used in this research. To see seasonal and annual variations of sea level, we made average of monthly sea level da...

Marine Ecosystem Model

El Niño and La Niña are disruptions to the ocean-atmosphere system in the equatorial Pacific area, with significant impacts on the climate and weather throughout the world. This paper discusses the possible impact of El Niño and La Niña to the water mass circulation in Ambon bay which is directly adjacent to the Banda Sea. We used observed vertical...

Mixed Layer Depth (MLD) is able to determine the amount of light and nutrients abundance for the growth of phytoplankton, its known that phytoplakton pigments are the main absorbers and light scatterers in the ocean. Location wich has deeper MLD and large seasonal variations are the most productive areas, also could have blooming or the maximum gro...

Major national and international ship traffic routes pass through the western part of Java Sea. Due to this reason, this area is vulnerable to oil spills from ships and offshore exploration. One of the most vulnerable areas to oil pollutant is the MPA (Marine Protected Area) of the Seribu Islands, particularly the region around Pari Island. The cur...

Volume and heat transport variations through Karimata Strait during 2010-2014 were studied using three-dimensional numerical model of Hamburg Shelf Ocean Model (HAMSOM). Simulated area is located in 1°0'0" N - 4°30'0" N and 104°0'15"E - 110°30'0"E with a horizontal resolution 0.5' (approximately 0.94 km). The average of root mean square error of cu...

Decapterus sp. is one of the main targeted species for small pelagic fish in Java and western Kalimantan Seas (Karimata Strait and South China Sea). Decapterus sp. mainly catch at around 40-70 meters depth. They live in warm waters (more than 26°C) with salinity greater than 30 ppt, pH greater than 7.75, and concentration of dissolved oxygen (DO) g...

Ocean thermal is one of the renewable energy resources. In 1981, a design of Ocean Thermal Energy Conversion (OTEC) pilot power plant was proven could produce electricity. The performance of OTEC depends on the possible temperature differences of the warm and cold seawater, at least 20°C. In the coastal of Para'baya, this requirement can be satisfi...

Coastal hazard assessment due to both periodic and non-periodic sea level rise (SLR) parameters in northern part of Jakarta is conducted to determine scenarios of oceanographic variability that could increase the potential hazard. Jakarta is the capital city of Indonesia where the northern part of Jakarta adjacent by the Java Sea. The area has high...

p> Karimata Strait located between Kalimantan and Bangka Islands, while Gaspar Strait located between Bangka and Belitung Islands. Volume transport variations through Karimata and Gaspar Straits during 2010-2014 were studied using three-dimensional numerical model of HAMburg Shelf Ocean Model (HAMSOM). Simulated area is located in 1°0′0′′N - 4°30′0...

p> Oil spills at sea are common in the shipping lanes of the ship as well as the locations of offshore oil drilling. Unfortunately, in every occurrence of the oil spill, we only see the effects after the occurrence, without knowing the original source. Indonesia n Numerical Coastal Environmental Assessment (IndoNACE) is research collaboration betwe...

- Pendahuluan - Kondisi Umum Perairan Laut Indonesia - Peluang Budidaya Ikan di Perairan Laut Indonesia - Kelayakan Pengembangan Budi Daya Ikan Kakap Putih di Laut - Kelayakan Sumber Daya Perairan Untuk Budi Daya Ikan Kakap - Strategi dan Rencana Aksi Pengembangan Sentra Industri Budidaya Offshore Ikan Kakap - Penutup

This Pilot Study aimed at improving the information on the state of the Indonesian marine environment that is gained from satellite data. More than 2000 historical and actual synthetic aperture radar (SAR) data from ENVISAT ASAR and Sentinel-1A/B C-SAR, respectively, were used to produce oil pollution density maps of two regions of interest (ROI) i...

We analyzed more than 5000 synthetic aperture radar (SAR) images from ERS 1/2, ENVISAT, ALOS-1, and Sentinel-1A with respect to marine oil pollution in two regions of interest (ROIs) in Indonesian waters. Both normalized spill number and normalized mean polluted area indicate that the marine oil pollution in the ROIs generally is of different origi...

This Pilot Study aimed at improving the information on the state of the Indonesian marine environment that is gained from satellite data. More than 2000 historical and actual synthetic aperture radar (SAR) data from ENVISAT ASAR and Sentinel-1A C-SAR, respectively, were used to produce oil pollution density maps of two regions of interest (ROIs) in...

IndoNACE is an abbreviation of Indonesian Seas Numerical Assessment of the Coastal Environment, a pilot study between Indonesia and Germany that combining analysis of oil spills from SAR images and numerical tracer studies from 3-D numerical model. Aim of this study is to understand the observed seasonal variations in marine oil pollution. Within t...

Menurut data dari Dinas Perikanan dan Kelautan Kabupaten Brebes tahun 2008 bahwa abrasi pantai di kawasan ini mencapai 640,45 ha dengan panjang garis pantai 27,14 km (Suyono dkk., 2015). Erosi di kawasan ini tergolong dalam kelas ringan yang umumnya terjadi karena rusaknya sabuk hijau (Departemen Kehutanan Prov. Jawa Tengah, 2006). Studi dinamika s...

Solar energy reaching earth surface is stored temporarily in upper ocean layer or ocean mixed layer as thermal energy. Thermal energy released mostly as latent heat by evaporation, followed by net longwave flux radiation (here after net LW) and then as sensible heat by conduction [1]. Net LW consist of longwave radiated from ocean surface to the at...

Abstract. IndoNACE is an abbreviation of Indonesian Seas Numerical Assessment of the Coastal Environment, a pilot study between Indonesia and Germany that combining analysis of oil spills from SAR images and numerical tracer studies from 3-D numerical model. Aim of this study is to understand the observed seasonal variations in marine oil pollution...

Sea Surface Temperature (SST) data can be used to understand oceanography dynamics in Ambon Bay. However, a lack of continual and long time series in-situ SST data limited this study. To overcome this problem, the Sr/Ca composition in Porites coral taken from Outer Ambon Bay was used to reconstruct SST. The coral sample was sub-sampled monthly and...

Sea Surface Temperature (SST) data can be used to understand oceanography dynamics in Ambon Bay. However, a lack of continual and long time series in-situ SST data limited this study. To overcome this problem, the Sr/Ca composition in Porites coral taken from Outer Ambon Bay was used to reconstruct SST. The coral sample was sub-sampled monthly and...