A5025030394- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Seismology and Earthquake Studies
- Atmospheric chemistry and aerosols
- Education and Critical Thinking Development
- Educational Practices and Challenges
- Geological Modeling and Analysis
- Spectroscopy and Laser Applications
- European and International Law Studies
- Climate variability and models
- High-pressure geophysics and materials
- Geological and Geochemical Analysis
- Fluid Dynamics and Mixing
- earthquake and tectonic studies
- Geochemistry and Geologic Mapping
- Educational Challenges and Innovations
- Methane Hydrates and Related Phenomena
Earth Observatory of Singapore
2018-2023
Nanyang Technological University
2018-2023
Abstract Over the last four decades, space-based nadir observations of sulfur dioxide (SO 2 ) proved to be a key data source for assessing environmental impacts volcanic emissions, monitoring activity and early signs eruptions, ultimately mitigating related hazards on local populations aviation. Despite its importance, detailed picture global SO daily degassing is difficult produce, notably lower-tropospheric plumes, due largely limited spatial resolution coverage or lack sensitivity...
Abstract. Volcanic plumes are common and far-reaching manifestations of volcanic activity during between eruptions. Observations the rate emission composition essential to recognize and, in some cases, predict state activity. Measurements size location important assess impact from sporadic or localized events persistent widespread processes climatic environmental importance. These observations provide information on volatile budgets Earth, chemical evolution magmas, atmospheric circulation...
Abstract Through integration of multiple data streams to monitor volcanic unrest scientists are able make more robust eruption forecast and obtain a holistic interpretation systems. We examined gas emission geochemistry seismic petrologic recorded during the 2015 Cotopaxi (Ecuador) in order decipher origin temporal evolution this eruption. Identification families similar events use amplitude ratios reveals changes processes. SO 2 (300 24,000 t/d), BrO/SO (5–10 × 10 −5 ), /HCl (5.8 ± 4.8 6.6...
Abstract Volcanoes have been found to display periodicities or cyclic trends in a wide range of phenomena. These include the eruptive activity itself, but also time series geophysical and geochemical monitoring data such as volcanic degassing. Here, we test existence degassing at 32 volcanoes using sulfur dioxide (SO 2 ) emission rates from Network for Observation Volcanic Atmospheric Change (NOVAC). We use Lomb‐Scargle periodogram analyze SO which allows efficient computation Fourier‐like...
Changes in the emission rate of volcanic sulphur dioxide (SO2) are crucial parameters for identifying unrest and forecasting eruptive activity. Ground-based ultraviolet (UV) remote sensing provides a near continuous record SO2 rate, with Differential Optical Absorption Spectroscopy (DOAS) being preferred method quantifying absorption from recorded spectra. However, retrieving accurate column amounts using DOAS requires complex fitting procedure that relies on user expertise selecting...
Abstract. Volcanic plumes are common and far-reaching manifestations of volcanic activity during between eruptions. Observations the rate emission composition essential to recognize, in some cases predict, state activity. Measurements size location important assess impact from sporadic or localized events persistent widespread processes climatic environmental importance. These observations provide information on volatile budgets Earth, chemical evolution magmas atmospheric circulation...