A5056520287- Geological and Geophysical Studies
- Geological and Geochemical Analysis
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Hydrocarbon exploration and reservoir analysis
- High-pressure geophysics and materials
- Seismic Waves and Analysis
- Methane Hydrates and Related Phenomena
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Seismology and Earthquake Studies
- Geomagnetism and Paleomagnetism Studies
- Solar and Space Plasma Dynamics
- Impact of Light on Environment and Health
- Oceanographic and Atmospheric Processes
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Earthquake Detection and Analysis
National Research and Innovation Agency
2023-2024
National Nuclear Energy Agency of Indonesia
2024
Nanyang Technological University
2016-2021
Earth Observatory of Singapore
2016-2021
Volcanic ash morphology has been quantitatively investigated for various aims such as studying the settling velocity of modelling purposes and understanding fragmentation processes at origin explosive eruptions. In an attempt to investigate usefulness morphometry monitoring purposes, we analyzed shape volcanic particles through a combination (1) traditional descriptors solidity, convexity, axial ratio form factor (2) fractal analysis using Euclidean Distance transform (EDT) method. We...
After several months of eruptive activity, the subaerial cone Anak Krakatau collapsed on December 22, 2018. The landslide event generated a tsunami that had deadly consequences within Sunda Strait in Indonesia. Such significant collapse events are common geologic record but rare phenomenon, instrumented record. However, these can have potentially large impact society. We reconstructed collapse, along with activity preceding and following it, by combining information from official reports,...
Abstract Marapi in Sumatra is characterized by frequent short‐lived explosions and small eruptions (Volcanic Explosivity Index 1–2) the past 250 years, volcano has erupted >60 times. Recent volcanic bombs presence of broadband seismic stations lead us to reconstruct plumbing system through an interdisciplinary study. A petrologic study summit uses pyroxene, plagioclase glass compositions obtain pressures temperatures magma storage as well identify pre‐eruptive processes. Two‐pyroxene...
Understanding the evolution of magma storage conditions on volcanoes which have had more than one caldera-forming eruption (CFE) is important to know about past and present conditions, as a key forecast future potential hazards. Krakatau volcano characterized by cyclic phases growth destruction edifice. A volcanostratigraphic study identified three eruptive periods: Old Krakatau, Young Anak Krakatau. The periods ended with first second CFE respectively. Due its permanent activity edifice...
Of all mesoscale phenomena, sea and land breezes have been the most studied, both observationally theoretically. During total solar eclipse (TSE), some parameters vary anomalously in response to occurrence of TSE on 9th March 2016 Bangka, Indonesia. As it occurred during morning hours, is considered be much more significant because its effect pattern, especially term lag time. We use Portlog Rainwise Automatic Weather Station which able measure data 1 Hz accuracy. Comparison hourly...
DATA REPORT article Front. Earth Sci., 15 February 2024Sec. Volcanology Volume 12 - 2024 | https://doi.org/10.3389/feart.2024.1245001
After a long paused of eruption, Marapi Volcano in West Sumatra, Indonesia, started to erupt on 7 January 2023.  The eruption lasted for couple months.  It is followed by several months quite period, the new, more violent episodes occurred starting Dec 3, 2023 which are ongoing.  study focus January-February understand volcano process, behaviour compared past and whether, hindsight there precursors that followed.  Compared last recent eruptions, consist...
Volcanic ash is made of particles smaller than 2 mm and produced during volcanic eruptions. Studying the properties key for a range applications, including volcano monitoring. However, given large variety textures, colors, shapes from different eruptions volcanoes it challenging to classify them in reproducible systematic manner. Here, we present an open access web-based platform that displays contents database particles, VolcAshDB (https://volcashdb.ipgp.fr/). Particle data includes optical...
This paper endeavor to describe sky brightness measurements which was carried out by a team of total solar eclipse observers (TOGEMA) on 9th March 2016. The observations took place at Tarentang Beach, Bangka Island and it utilized the SQM-LU instrument (Sky Quality Meter- USB Connector) with 1 second time interval data. During phase that lasted about minute 52 seconds, recorded 12.88 mag/["]2 as dimmest value. value is approximately 500 times brighter than night conditions same location,...
Abstract We carried out drones photogrammetry on Anak Krakatau in 2013, 2019, 2020 and 2021. Changes the morphology of occurred so quickly as its volcanic activity never stopped. Its pyroclastic cone 2013 reached a height 334 meters with coastline circumference 6.8 km. The calculated from traces old crater wall has volume 31971 m 3 . During 2018 eruption, large part was pulverised, resulting 400 diameter. Paradoxically, while top volcano dropped to 156 m, island-volcano grown relatively...