The following paper by Mr. Wataru Nakamura, a doctoral student in our laboratory, and his colleagues has been published in Journal of Marine Science and Engineering. This research is related to blue carbon, defined as carbon sequestered and stored by marine ecosystems, which has been the focus of much attention recently. Based on field studies in fringe mangroves (mangroves that develop along the coast rather than in estuaries) on Ishigaki Island and Iriomote Island in Okinawa Prefecture, Japan, the paper suggests that tidal flats adjacent to fringe mangrove forests may mitigate the rise in pCO2 and promote offshore export of dissolved carbon. Congratulations, Mr. Nakamura! Nakamura, W., Wang, K., Ono, […]
The following paper by Wataru Nakamura, Ph.D. candidate, et al. has been published in the international journal Marine Environmental Research. The paper is an outcome of joint research project with Nippon Steel Corporation to create a shallow-water seagrass bed ecosystem using calcified soil made from steel slag and dredged soil in a mesocosm tank at the company's research institute. The calcified soil was found to be effective in promoting atmospheric carbon uptake by raising the pH and lowering the partial pressure of carbon dioxide (pCO2) through alkaline leaching. This is expected to be one of the methods to create blue carbon ecosystems. Congratulations, Nakamura! Nakamura, W., Kosugi, C., Yoshimura, K., […]
The following paper by Dr. Chen Jundong, a Visiting Researcher of our laboratory (Project Researcher since September 1, 2023) and others, has been accepted for publication in the international journal Estuarine, Coastal and Shelf Science. Seagrass wrack, the detritus (residue) from seagrass meadows that accumulates along the coast, is expected to be a valuable resource and contribute to carbon sequestration if well managed. This research focused on the eelgrass (typical seagrass in the bay) wrack deposited on the beach of Futtsu Coast in Tokyo Bay from the perspective of blue carbon, defined as carbon sequestered and stored by marine ecosystems. We proposed an efficient and quantitative monitoring method using automated […]
As part of our research on blue carbon in urban bays, we have developed a practical method to estimate the the partial pressure of carbon dioxide (pCO2) in coastal waters based on continuous observations from conventional salinity and pH meters. Using this method, we conducted continuous monitoring of pCO2 at ports in the head of Tokyo Bay and succeeded in capturing the dynamics of pCO2 and other parameters during the blue tide (upwelling of anoxic water) that occurred in September 2021. Our study outcomes are expected to contribute to the social implementation of blue carbon by adding pCO2 to the existing water quality monitoring items conducted by governments and other […]
The following article, written in collaboration with Chulalongkorn University, has been published in an international journal of Scientific Reports. The article examined the characteristics and effectiveness of grey and green infrastructure as measures against coastal erosion along the coastline between the Chao Phraya River and Bang Pakong River in the upper Gulf of Thailand. Charoenlerkthawin, W., Bidorn, K., Burnett, W.C., Sasaki, J., Panneerselvam, B. and Bidorn, B. Effectiveness of grey and green engineered solutions for protecting the low-lying muddy coast of the Chao Phraya Delta, Thailand. Scientific Reports, 12, 20448, 2022. https://doi.org/10.1038/s41598-022-24842-x
The following paper by Kangnian Wang, a doctoral student in our laboratory, has been accepted and published in Coastal Engineering Journal. This paper describes the modeling and numerical simulation of hypoxic and anoxic waters and blue tides caused by upwelling of anoxic waters in Tokyo Bay, focusing on sulfur processes. Congratulations to Mr. Kangnian Wang! Wang, K., Nakamura, Y., Sasaki, J., Inoue, T., Higa, H., Suzuki, T. and Hafeez, M. . Anodeling approach for predicting hypoxia and blue tide in Tokyo Bay, Coastal Engineering Johypoxic 2022. https://dos0.1080/21664250.2022.2119011si
Dr. Changsheng CHEN, Montgomery Charter Chair Professor at the University of Massachusetts Dartmouth, has been appointed as Project Professor at the invitation of our graduate school since September 1, 2022. His term of appointment is until November 30, 2022.
The following paper by Dr. Liu Fei, a former Ph.D. student in our laboratory, has been published in Natural Hazards. The paper dealt with a multi-hazard study of storm surges, floods, and tsunamis in Tokyo Bay, Japan. Liu, F., Sasaki, J., Chen, J. and Wang, Y. Numerical assessment of coastal multihazard vulnerability in Tokyo Bay. Nat Hazards, 2022. https://doi.org/10.1007/s11069-022-05533-2 For the time being, it can only be viewed here.
The response speed has been improved by the migration of the contracted Sakura's server to a new server. According to Sakura, it is up to five times faster.