Nining Sari Ningsih

Bandung Institute of Technology | ITB · Oceanography

Research focusing on seagrass ecosystems as carbon storage has been conducted in various Indonesian waters. However, an essential aspect that remains unexplored is the simultaneous analysis of blue carbon storage in seagrass alongside carbon dioxide (CO2) flux values, particularly within Karimunjawa waters. This study aims to assess the organic car...

This study aimed to investigate the characteristics of marine heatwaves (MHWs) in the Makassar Strait and adjacent waters (MSAW) using the Optimum Interpolation Sea Surface Temperature (OISSTv2) dataset from 1982 to 2021. The analysis revealed a significant positive trend in the frequency and duration of MHWs, while the mean and maximum intensities...

We conducted an investigation into the characteristics of marine heatwaves (MHWs) in Indonesian waters, aiming to understand the underlying mechanisms responsible for their formation, particularly the ones generated by net surface heat flux. To accomplish this, we utilized remote sensing data from the National Oceanic and Atmospheric Administration...

The variability and trend of volume and advective heat flux, in addition to the net inflow and outflow of advective heat flux in the Java Sea for 64 years (1950–2013), along with its relationship with the monsoon, ENSO (El Niño Southern Oscillation), and IOD (Indian Ocean Dipole), have all been studied. A simulation of the 3D hydrodynamic HYCOM (HY...

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...

Changes in convective activity and hydroclimate over Northeastern Kalimantan are key features to understand glacial to interglacial climate evolution in the center of the West Pacific Warm Pool during the Late Pleistocene to Holocene. We use high-resolution X-ray fluorescence (XRF) scanner-derived elemental ratios in sediment Core SO217-18522 (1º 2...

In this paper, we investigate the characteristics of marine heatwaves (MHWs) (i.e. frequency, maximum intensity, and duration of occurrences) in Indonesian waters and the mechanisms underlying the formation of MHWs generated by local forcing. The study utilizes the remote sensing data from National Oceanic and Atmospheric Administration (NOAA) Opti...

In this paper, we investigate the characteristics of marine heatwaves (MHWs) (i.e. frequency, maximum intensity, and duration of occurrences) in Indonesian waters and the mechanisms underlying the formation of MHWs generated by local forcing. The study utilizes the remote sensing data from National Oceanic and Atmospheric Administration (NOAA) Opti...

Results from the WAVEWATCH III simulation by the Geospatial Information Agency of Indonesia are used to describe the characteristic and variation of wind-driven waves and its energy throughout Indonesian seas and adjacent waters for 25 years (1991–2015). The simulation results are compared with buoys and Topex/Poseidon satellite observation to test...

Early morning precipitation (EMP) events occur most frequently during January and February over the northern coast of West Java and are characterized by propagating systems originating from both inland and offshore. The initial location, direction, and speed of the propagating precipitating system determine the timing of EMP. This study explores pr...

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...

Balikpapan is one of the main port cities with residential areas, industry, trade, and vital objects scattered from north to south along the coast of Balikpapan Bay. This dense activity increases traffic in Balikpapan Bay. Thus, the hydrodynamic conditions in these waters are essential to be reviewed. The purpose of this research is to simulate hyd...

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...

Natuna Regency is known as the northernmost regency in the Karimata Strait with its abundant captured fisheries up to 104.879,81 tons, oil up to 3.138.143 barrels and natural gas up to 34.772.019 MMBTU in 2019, respectively. Moreover, Natuna is famous for aquaculture fisheries of Napoleon (Cheilinus undulatus) with allowed-export capacity up to 30,...

Detailed ocean currents in the southeastern tropical Indian Ocean adjacent to southern Sumatran and Javan coasts have not been fully explained because of limited observations. In this study, zonal current characteristics in the region have been studied using simulation results of a 1/8∘ global hybrid coordinate ocean model from 1950 to 2013. The si...

Several studies have suggested Indonesia to be among the top plastic polluting countries globally. Data on the presence and amounts of plastic pollution are required to help design effective plastic reduction and mitigation strategies. Research quantifying plastic pollution in Indonesia has picked up in recent years. However, a lack of central coor...

Pada tahun 2005 dilakukan pembangunan jetty di muara Sungai Prajagumiwang, tepatnya di Pantai Karangsong, Desa Karangsong, Kecamatan Indramayu, Kabupaten Indramayu, Jawa Barat. Pembangunan jetty ini merupakan salah satu solusi dari permasalahan pendangkalan alur pelayaran di wilayah tersebut. Selain berdampak pada aktivitas perikanan setempat, pemb...

As reported extensively in both electronic and print media in Indonesia, high wave and anomalously high sea level phenomena occurred in February 2008 in Indonesian waters, mainly along the western coast of Sumatra and the southern coasts of Java-Bali. Tropical Cyclone (TC) Nicholas, occurring in northwestern coastal waters of Australia between 11 a...

Zonal current characteristics in the Southeastern Tropical Indian Ocean (SETIO) adjacent to the southern Sumatra-Java coasts have been studied using 64 years (1950–2013) data derived from simulated results of a 1/8° global version of the HYbrid Coordinate Ocean Model (HYCOM). This study has revealed distinctive features of zonal currents in the Sou...

The Understanding of the existence of upwelling, which concerning location, onset and ending, top temporally, strength, extent area are very important for the management of marine waters, especially fishing and conservation. A method is needed to identify the area of upwelling base on its indicators. The one method that is needed is to classify the...

The past few decades have seen considerable interest in exploration and research of ocean wave energy as a potential energy substitute for fossil-based fuel. In this study, a Wavewatch III spectrum wave model was driven to simulate significant wave height spanning for a period of 25 years, from 1991 to 2015 on the west coast of the island of Sumatr...

The publication of this article unfortunately contained a mistake.

Highlights • The results of the model and observation showed the similarity of the amplitude and phase formed • At the highest tide was in the position above the Sea Mean level and the current velocity was lower than when heading to the tide • There was a difference in the direction of the current when heading towards high tide • Stratification of...

The diurnal cycles of precipitation over the northern coast of West Java have been studied using the Tropical Rainfall Measuring Mission (TRMM) Real Time Multi-satellite Precipitation Analyses (TMPA-RT) products with records spanning from 2000 to 2016, with emphasis on the occurrences of early morning precipitation peaks. Diurnal precipitation over...

Conceptually, tidal rivers are seen as narrow channels along which the cross-section geometry remains constant and the bed is horizontal. As tidal waves propagate along such a channel, they decrease exponentially in height. The more rapid the decrease, the stronger the river flow. Near the coast, the tidally averaged width and depth change little t...

Interaction of the diurnal cycle of rainfall systems between land and sea were investigated by hourly rainfall of 3B41RT TRMM dataset, daily SST dataset from OISST, 6- hourly wind and temperature data from NCEP-NCAR Reanalysis, during period of NDJFM 2000-2016. The results showed that the diurnal cycle of rainfall from sea to land and from land to...

The diurnal cycles of precipitation over the northern coast of West Java have been studied using the Tropical Rainfall Measuring Mission (TRMM) Real Time Multi-satellite Precipitation Analyses (MPA-RT) products with records spanning from 2000 to 2016, with emphasis on the occurrences of early morning precipitation peaks. Diurnal precipitation over...

The present study aims to understand the tidal dynamics in a tropical coastal lagoon, Segara Anakan, Java, Indonesia. It is a shallow lagoon, with complex tidal channels and connected to the Indian Ocean by two channel outlets. It covers an overall area of about 12.000 ha. Three–quarters of the lagoons area have mangroves and the remaining quarter...

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...

Karakteristik dinamika seas dan swell di sepanjang perairan Laut Cina Selatan-Teluk Jakarta pada waktu terjadi Badai Hagibis (18–27 November 2007) dikaji dengan menggunakan metode pemodelan spektrum gelombang untuk mengetahui kontribusi gelombang yang dibangkitkan angin (gelombang angin) terhadap kejadian rob tanggal 25 November 2007 di pantai utar...

This study presents the assessment and seasonal variation of wave energy along the southern coast of Java, Bali, and Nusa Tenggara Waters. For this purpose, the WAVEWATCH-III numerical model was used to simulate the Significant Wave Height in the study region over 25 years covering the time interval of 1991-2015. Wind field data input for the model...

Penelitian ini bertujuan untuk mengkaji pengaruh kerapatan mangrove terhadap dinamika pasang surut di Segara Anakan, Cilacap, Jawa Tengah. Studi ini menggunakan model hidrodinamika Delft3D dengan gaya pembangkit debit sungai dan pasang surut. Hasil verifikasi elevasi pasang surut antara hasil pemodelan dengan data observasi di Klaces dan Seleko men...

Persamaan logaritmik standar sering digunakan untuk mengestimasi kurva profil vertikal kecepatan arus laut secara analitik di suatu perairan. Tujuan dari estimasi kurva suatu profil vertikal kecepatan arus dengan persamaan analitik, yakni logaritmik, berguna untuk mendapatkan konstanta u* dan zo melalui proses curve fitting yang nantinya dapat digu...

This study aimed to investigate the effects of currents to wave height in the waters of Merak Port, Banten using wave spectrum model. The wave-current interaction simulation was performed by utilizing SWAN (Simulating Waves Nearshore) in stationary mode and using the unstructured triangular grid. Data of wind velocity and direction as model inputs...

Tinggi dan jarak genangan rob yang disebabkan oleh gelombang badai pasang (storm tide) dan variasi antar tahunan di sepanjang pantai utara Jawa disimulasikan dengan menggunakan model hidrodinamika 2D dengan fasilitas Flooding and Drying (FAD). Dalam simulasi tersebut, digunakan batimetri dari General Bathymetric Chart of the Oceans (GEBCO), peta DI...

The wave characteristics including significant wave height and direction, seas and swell in the Sunda Strait are analyzed seasonally to provide marine weather information. This is crucial for establishing secured marine activities between islands of Sumatera and Java. Ocean wave characteristics in the Sunda Strait are simulated for one year (July 1...

River discharge has to be monitored reliably for effective water management. As river discharge cannot be measured directly, it is usually inferred from the water level. This practice is unreliable at places where the relation between water level and flow velocity is ambiguous. In such a case, the continuous measurement of the flow velocity can imp...

Understanding the characteristics of the ocean wave in Indonesian Seas particularly in western Indonesian Seas is crucial to establish secured marine activities in addition to construct well-built marine infrastructures. Three-years-data (July 1996 - 1999) simulated from Simulating Waves Nearshore (SWAN) model were used to analyze the ocean wave ch...

Wetlands are important reservoirs of water, carbon and biodiversity. They are typical landscapes of lowland regions that have high potential for water retention. However, the hydrology of these wetlands in tropical regions is often studied in isolation from the processes taking place at the catchment scale. Our main objective is to study the hydrol...

Wetlands are important reservoirs of water, carbon and biodiversity. They are typical landscapes of lowland regions that have high potential for water retention. However, the hydrology of these wetlands in tropical regions is often studied in isolation from the processes taking place at the catchment scale. Our main objective is to study the hydrol...

Coastal lowland plains under mixed fluvial-tidal influence may form complex, composite channel networks, where distributaries blend the characteristics of mouth bar channels, avulsion channels and tidal creeks. The Kapuas coastal plain exemplifies such a coastal plain, where several narrow distributaries branch off the Kapuas River at highly asymme...

p>Wetlands are important reservoirs of water, carbon and biodiversity. They are typical landscapes of lowland regions that have high potential for water retention. However, the hydrology of these wetlands in tropical regions is often studied in isolation from the processes taking place at the catchment scale. Our main objective is to study the hydr...

Documentation regarding events of Jakarta flooding in 2007 and 2013 showed heavy rains occurred in the morning until noon for a couple days on the coastal area. These indicated that the events related to a change in diurnal patterns of rainfall over land. This study was conducted to confirm the changing on diurnal rainfall pattern in the case of fl...

Wetlands are important reservoirs of water, carbon and biodiversity. They are typical landscapes of lowland regions that have high potential for water retention. However, the hydrology of these wetlands in tropical regions is often studied in isolation from the processes taking place at the catchment scale. This contribution offers a comprehensive...

A simulation of water level, velocity, salinity, and temperature in the Bay of Benoa has been carried out using a three-dimensional hydrodynamic Estuarine and Coastal Ocean Model incorporating a main characteristic of southward transport of the Indonesian throughflow at the offshore area of the bay. In other respects, two types of boundary conditio...

Spatial and temporal variation of upwelling along the southern coast of Bali and in the Nusa Tenggara waters — Indonesia was studied by using satellite image data of sea surface temperatures and chlorophyll-a from September 1997 to December 2008. This study clearly reveals annual upwelling in the regions from June to October, associated with the so...

Semarang merupakan salah satu kawasan yang sering mengalami genangan air pasang (rob) yang dipengaruhi oleh beberapa faktor yaitu: faktor meteorologi, laju penurunan tanah dan faktor astronomi (pasang surut). Penelitian ini bertujuan untuk mengetahui kehandalan model dan peran faktor meteorologi pada simulasi genangan rob di wilayah Semarang. Metod...

Lapisan termoklin berperan dalam identifikasi kedalaman lapisan renang dari ikan tuna. Identifikasi perubahan kedalaman termoklin pada variabilitas ENSO (El Nino Southern Oscilation), IOD (Indian Oscillation Dipole Mode) dan Monsun, dikaji berdasarkan data CTD(Conductivity-Temperature-Depth) dan argofloat yang terakumulasi dalam Word Ocean Data (WO...

Telah dilakukan penelitian untuk mengkaji pola sirkulasi arus dan salinitas perairan estuari sungai Kapuas yang dibangkitkan oleh pasang surut, gaya pembangkit angin dan discharge sungai. Pada studi ini digunakan model numerik hidrodinamika MIKE 21 yang dikembangkan oleh DHI Water & Environment untuk mensimulasikan pola sirkulasi arus dan salinitas...

A storm tide event (the sum of the astronomical tide and the storm surge) along the southern coast of Java has been simulated by using a two-dimensional (2D) ocean model (barotropic version of Mike 21). In this study, we simulated the storm surge generated by the Cyclone Jacob during 2−12 March 2007 and Cyclone George during 3−9 March 2007 in north...

A baroclinic 3D hydrodynamic model with the non-hydrostatic approximation called Massachusetts Institute of Technology Global Circulation Model (MIT gcm) has been applied to simulate the generation of internal tidal bores and their disintegration into internal solitary waves in the Strait of Lombok. Numerical simulation have been carried out by inc...

A bi-chromatic signal that is subject to the Benjamin-Feir instability will show large deformations while propagates away from its source. For applications in hydrodynamic laboratories to generate large waves to test ships in extreme conditions, it is desired to know the location and height of the maximal waves with respect to the properties at the...

A coupled three-dimensional hydrodynamics and sediment transport model of HydroQual, Inc., (2002), ECOMSED, has been used to simulate variation of suspended cohesive sediment transport in Estuary of Mahakam Delta. The simulation results indicate that tides and seasonal variation of river discharges are the main causes of variations in the suspended...

A one-year simulation of tide- andwind-driven circulation in the Java Sea, which is one ofthe Indonesian seas located in a tropical area, hasbeen carried out using a three-dimensionalhydrodynamic model incorporating the influence of thewind waves generated at the sea surface. This area isinfluenced by the monsoon climate (east- andwest-monsoon). Si...

Application of three-dimensional hydrodynamics model of Princeton University, Princeton., (1977), POM, accommodating diagnostic condition, tides and wind as generating forces has been ulitized to simulate marine current in Bali, Lombok, and Makassar Straits. It has typically been to identify appropriate sites for marine energy extraction and quanti...

Informasi mengenai variabilitas spasial suhu dan klorofil-a permukaan laut memiliki peran penting sebagai sarana pendugaan daerah potensi ikan tuna. Penelitian ini bertujuan untuk mengkaji dan menggambarkan variabilitas suhu dan klorofil-a permukaan laut baik secara spasial maupun temporal di daerah upwelling pada variasi kejadian El Nino Southern...