A5101404037- Marine and coastal ecosystems
- Arctic and Antarctic ice dynamics
- Isotope Analysis in Ecology
- Methane Hydrates and Related Phenomena
- Mercury impact and mitigation studies
- Soil Carbon and Nitrogen Dynamics
- Toxic Organic Pollutants Impact
- Oceanographic and Atmospheric Processes
- Ocean Acidification Effects and Responses
- Marine Biology and Ecology Research
- Climate change and permafrost
- Atmospheric and Environmental Gas Dynamics
- Hydrological Forecasting Using AI
Kyushu University
2020-2024
Fujian Normal University
2024
Hypoxia in the Ariake Sea, Japan, is steadily increasing both duration and spatial coverage. Hypoxia, defined as dissolved oxygen (DO) below 3 mg/L, strongly associated with amplified frequency of extreme rainfall events driven by climate change, which poses a mounting threat to marine ecosystems on global scale. In this study, we employed general three-dimensional (3-D) hydrodynamic coastal model phytoplankton-based ecosystem identify potential cause seasonal hypoxic over three decades. The...
Shallow coastal waters (SCWs) have attracted wide attention in recent years due to their strong carbon sequestration capacity. However, the complex dioxide (CO 2 ) dynamics water column makes it difficult estimate air–water CO fluxes (F CO2 accurately. We developed a numerical model of based on field measurements for typical stratified semi-enclosed shallow bay: Yatsushiro Sea, Japan. The showed an excellent ability reproduce stratification and Sea. Through simulations, we analyzed annual...
Mercury pollution has attracted more attention in marine environment since the outbreak of Minamata Disease Japan than 6 decades ago. Although highly total mercury been dredged by government, many experiments for measurement were carried out and indicated that trace was still Bay, some even transported along with sediments from bay to nearby Yatsushiro Sea. Hence, it is necessary develop a numerical model simulating migration. In this study, established Delft3D based on in-situ measurement,...
After Minamata disease occurred in Kumamoto Prefecture, the Bay Pollution Prevention Project on area was started to deal with mercury pollution. Beneficial from project, content bay has been significantly reduced. However, many studies have shown that residual trace around is still high. Furthermore, migrated Yatsushiro Sea. Therefore, continuous research distribution and of this region required.
In 2020 Kyushu floods, the cumulative rainfall exceeded 500 mm in entire Chikugo River basin. The water level measured by Senoshita observatory located downstream of river became highest past years. is one sources freshwater into Ariake Sea and plays a critical role marine environment benthic ecosystem bay. This study evaluated effect large-scale effluent on development hypoxia (DO less than 3 mg/L) bay numerical simulation hydrodynamic model model. Meantime, we also compared with five other...
In 1977, the Minamata Bay Pollution Prevention Project was initiated to dispose of sedimentary sludge containing over 25 ppm total mercury (T-Hg) after outbreak Disease. The sediments high concentration Hg were dredged, but nevertheless, residual in has attracted much attention. Moreover, some studies have even indicated that remaining near bay migrated Yatsushiro Sea.
In recent years, the water environment of Ariake Sea and Yatsushiro in western Kyushu has been deteriorating, damage to fisheries continued expand. Dissolved Oxygen (DO) plays a vital role maintaining health ecosystems participates primary process ecological cycle. Sea, it was first reported that DO occurred downward trend summer 2016 reached level 4 mg/L part sea areas 2019. reduction is more inclined occur summer, as heavy rainfall causing large amount freshwater flowing into bay may cut...