Evaluation of hydrodynamic effects on blue carbon dynamics in the Yatsushiro sea

Bing Xiong, Naoki Saito, Hiroto Komori, Shinichiro Yano, Keisuke Nakayama, Katsuaki Komai, Kei Yajima

Research output: Contribution to conferencePaperpeer-review

Abstract

In this study, we conducted the first field measurement of blue carbon dynamics in the Yatsushiro Sea, which is a semi-enclosed bay in Japan, in order to analyze water quality parameters such as Dissolved Inorganic Carbon (DIC) and Total Alkalinity (TA) that have the greatest influence on the partial pressure of carbon dioxide (pCO2) in seawater. In addition, we tried a hydrodynamic numerical simulation by a 3D model that can evaluate hydrodynamic effects, such as the effects of freshwater inflow from rivers and seawater inflow from the Ariake Sea, on the dynamics of DIC and TA in the bay. As a result of this study, we find out the followings: i) the value of ΔTA is extremely low comparing to the past study in another coastal region (Tada et al., 2015); ii) the largest effects of the inflow of seawater from the Ariake Sea can be evaluated as about 2%; and iii) the inflow effects of the small rivers are totally accounted for about 3.54% of the value of the Kuma River.

Original languageEnglish
Publication statusPublished - 2020
Event22nd Congress of the International Association for Hydro-Environment Engineering and Research-Asia Pacific Division: Creating Resilience to Water-Related Challenges, IAHR-APD 2020 - Sapporo, Virtual, Japan
Duration: Sep 14 2020Sep 17 2020

Conference

Conference22nd Congress of the International Association for Hydro-Environment Engineering and Research-Asia Pacific Division: Creating Resilience to Water-Related Challenges, IAHR-APD 2020
Country/TerritoryJapan
CitySapporo, Virtual
Period9/14/209/17/20

All Science Journal Classification (ASJC) codes

  • Ecology
  • Environmental Engineering

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