A5075353804- Geological and Geophysical Studies
- Oceanographic and Atmospheric Processes
- Marine and Coastal Ecosystems
- Marine and coastal ecosystems
- Ocean Waves and Remote Sensing
- Climate variability and models
- Marine and fisheries research
- Tropical and Extratropical Cyclones Research
- Coastal Management and Development
- Agricultural and Environmental Management
- Aquatic life and conservation
- Coral and Marine Ecosystems Studies
- Water Quality Monitoring Technologies
- Coastal wetland ecosystem dynamics
- Arctic and Antarctic ice dynamics
- Methane Hydrates and Related Phenomena
- Geophysics and Gravity Measurements
- Oil Palm Production and Sustainability
- Multimedia Learning Systems
- Ocean Acidification Effects and Responses
- Water Quality Monitoring and Analysis
- Marine and coastal plant biology
- Data Mining and Machine Learning Applications
- Coastal and Marine Dynamics
- Heavy Metal Pollution Remediation
Diponegoro University
2016-2025
Tohoku University
2014
The Maluku Sea features strong Chlorophyll-a (Chl-a) bloom and sea surface temperature (SST) cooling during the Southeast Monsoon season. Using high-resolution Chl-a SST satellite observations over a long time window, this study aims to investigate effect of El Niño Southern Oscillation (ENSO) on seasonal variability in Sea. During La Niña, maximum concentration (greater than 0.5 mg/m <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> )...
It has been widely known that the coastal upwelling along southern coast of Java is generated by southeasterly wind which induces offshore Ekman Mass Transport (EMT) during southeast monsoon. However, variability EMT not fully described in previous studies. The present study investigated dynamics consist and Pumping Velocity (EPV) Java, based on remotely sensed data. We demonstrated incongruity between distribution speed sea surface temperature (SST) monsoon related to dynamics. Offshore at...
The previous studies of upwelling within the Indonesian seas only focused on Southeast Monsoon (SEM) season. western coast Sumatra Island; southern Java Island, Sunda Islands, and Sulawesi Banda Sea, Maluku Arafura Sea are well-known SEM areas. However, events during Northwest monsoon (NWM) have never been investigated. investigation NWM is challenging due to broad cloud coverage, limiting observation infrared visible sensors satellites. This study used blended products satellite-based sea...
Blue carbon ecosystems in the Karimunjawa Islands may play a vital role absorbing and storing releasing from Java Sea. The present study investigated mangrove above-ground biomass (AGB) stock Karimunjawa-Kemujan Islands, largest area Islands. Taking aerial photos an Unmanned Aerial Vehicle combined with Global Navigation Satellite System (GNSS) measurements, we generated Digital Surface Model (DSM) Terrain (DTM) high accuracy. We calculated canopy height by subtracting DSM DTM then converted...
This research examines the eutrophication process mainly by considering chlorophyll-a concentration.A simple linear model was used to determine correlation between Chlorophyll-a and dissolved inorganic phosphate (DIP).The carried out on river mouths in north coast of Central Java.The results show that relationship DIP follows logarithmic with log [Chloa] = 1.52 + 1.60 [DIP], R 2 0.55.The suggests high concentration is related concentrations.On basis sufficient conclusive evidence for these...
Long-term satellite data are used to investigate the variability of ocean surface chlorophyll-a (chl-a) concentration in Halmahera Sea (HS) under influence Australian-Indonesian Monsoon (AIM), El Niño-Southern Oscillation (ENSO), and Indian Ocean Dipole (IOD). In this study, we first analysed seasonal chl-a, then examine relationship between sea temperature (SST), wind stress area. Our results suggest that prevailing southeasterly winds play a fundamental role generating chl-a blooms HS....
Abstract The distribution and variability of surface winds in the seas straits Maritime Continent, or Indonesian seas, are investigated using scatterometer wind measurements reanalysis data. This study focuses on detailed climatology has significant implications for a better understanding regional climate, meteorological disasters, offshore resource. monsoon predominantly blow over along routes formed by coastlines large islands chains small islands. speeds persistently strong these routes,...
The Sulawesi Sea and the northern part of Maluku belong to western equatorial Pacific that is influenced by Mindanao Current. During southeast (SE) monsoon, contrasting sea surface temperature (SST) distributions occur between these two seas. purpose this research investigate mechanisms SST distribution in under condition strong southerly wind during SE monsoon season. Our analysis was based on satellite observations. Warmer (colder) SSTs are identified (northern Sea), which correspond...
Sea surface temperature (SST) and chlorophyll-a (Chl-a) are two parameters often used for identifying the marine productivity. Located at maritime continent, variability of SST Chl-a in Indonesian seas is influenced by El Niño Southern Oscillation (ENSO). The previous studies showed that effect tend to decrease increase areas within seas. Using long time observation satellite data (2003-2016), it was found different result Java Sea. Since has strong seasonal monsoon wind, ENSO depend on...
The previous studies have simulated the variability of wave within Indonesian seas which showed that follows seasonal pattern. However, their analysis only consider influence local wind forcings. bias and error were also unclear. In present study, we investigate its relation with surface speed using combination reanalysis remote sensing data high accuracies. We split into swell to obtain show at inner (i.e., South China Sea, Java Flores Banda Sea Arafura Sea), significant height (SWH) is...
The evolution of an extreme positive Indian Ocean Dipole (pIOD) that took place in the tropical during late boreal summer to early winter 2019 is examined terms coupled ocean–atmosphere dynamics. patterns anomalous sea-surface temperature (SST) revealed a typical pIOD characteristic: cooling (warming) southeastern (western) Ocean. Based on Mode Index (DMI), event started mid-July and gradually strengthened with abrupt weakening September before coming its peak October/early November. It...
Abstract Remote sensing applications in precision identification of agriculture and forest vegetation have been steadily increasing recent years due to improvements spatial spectral resolutions remotely sensed imagery. This research aims analyse identify the dominant species on mangrove ecosystem Timbulsloko Village, Central Java Province (Indonesia) develop library individual tree mangrove-forest using a ground-based spectroradiometer. The measurements reflectance spectra ground were...
Laut Sawu merupakan salah satu wilayah perairan di Indonesia yang memiliki tingkat kesuburan dan potensi akan sumber daya lautnya. termasuk peraian terpengaruh dari ENSO. Fenomena ENSO dapat mempengaruhi distribusi Suhu Permukaan Laut, curah hujan Sawu. Penelitian mengenai pengaruh terhadap telah banyak dilakukan, namun tidak spesifik El Nino kuat tahun 2023 masih sedikit. ini dilakukan untuk mengetahui mekanisme hujan. Data digunakan dalam penelitian terdiri SPL, Angin bersumber OSTIA,...
Abstract The Indonesian Maritime Continent (IMC) exhibits fresher conditions during the northwest monsoon, particularly in its southern hemisphere component (hereafter, “IMC sh ”). salinity budget formula is used to calculate contributions of surface flux, river discharge, and advection seasonal patterns Banda Sea link climatic events. mild freshening December massive March. associated with flux caused by precipitation, March Java zonal advection, a modest contribution from flux. undergoes...
Graphical Abstract Highlight Research Three distinct water layers were identified: surface (0-50 m), thermocline (50-180 and deep (>180 m). The layer is the most stable, with high Brunt-Väisälä frequency low Thorpe displacement values. highest energy dissipation rates observed in layer. Vertical diffusivity values decreased depth. Flores Sea on western ITF trajectory connecting Pacific Indian oceans. Identification quantification of turbulent mixing masses are essential for analyzing...
Abstract The El Niño–Southern Oscillation (ENSO) event induces significant sea-level and temperature changes, which can severely impact the coral reef ecosystem. Nino has affected Indonesia since June 2023, intensifying from late 2023 through April 2024, potential to cause bleaching events. Karimunjawa is a vital marine protected area in Java Sea, high diversity potentially threatened by mass bleaching. To assess extent of waters, rapid survey was conducted early February focusing on eastern...
Abstract This research examines the use of UAV (unmanned aerial vehicles) with a resolution 4 cm/pixel for precise identification mangrove species in Pasar Banggi and Tireman regions Rembang, Central Java, covering an area 36.2 hectares. Utilising high-resolution imagery Geographic Object-Based Image Analysis (GEOBIA), six were identified: Avicennia marina (6.26 ha), Excoecaria agallocha (2.09 Rhizophora apiculata (12.3 mucronata (8.56 stylosa (2.79 Sonneratia (0.0068 water bodies (4.2 ha)....
Material Padatan Tersuspensi (MPT) merupakan partikel yang melayang dikolom perairan dan terdiri dari berbagai komponen organik maupun anorganik. Kehadirannya menyebabkan kekeruhan air sehingga menghalangi sinar matahari masuk ke perairan, mengganggu proses fotosintesis berdampak negatif pada ekosistem. Pemantauan MPT secara temporal dapat dilakukan melalui pemanfaatkan teknologi penginderaan jauh. Nilai estimasinya sangat bergantung pemilihan sebuah algorithma. Penelitian ini bertujuan...
Pembuatan co-tidal chart konstanta harmonik pasang surut ini dilakukan dengan tujuan mengetahui karakteristik di wilayah Indonesia bagian barat. Co-Tidal memetakan sebaran nilai fase suatu wilayah. Wilayah yang dipetakan adalah perairan dipilih guna melihat pengaruh Samudera Hindia dan Pasifik terhadap kondisi peta menggunakan data model FES2014. Pada penelitian mengolah 9 yaitu K1, O1, P1, K2, M2, S2, N2, M4 MS4, dalam pembuatan surut. Hasil analisis menunjukkan bahwa harian tunggal terdiri...
Atmospheric interactions have led to a consistent rise in ocean temperatures the Indonesian seas, exacerbated by emergence of marine heatwaves (MHWs) that extend over thousands kilometers. MHWs are defined as temperature anomalies above 90th percentile sea surface (SST) baseline for at least five consecutive days. The Savu Sea, influenced throughflow transports warm water from Pacific Indian Ocean, experiences significant anomalies. This study employs OSTIA L4 Marine Copernicus Global Ocean...