MODELLING OF NUTRIENT REDUCTION RATE FROM CARCASS OF ANADROMOUS FISHES AND ESTIMATION OF INFLUENCE TO RIVER WATER QUALITY
Katsuaki KOMAI, Kazuki YUHARA and Shunsuke HIROKI
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75(2) I_535-I_540 Nov 2019 [Refereed]
Influence of river water temperature on nutrient reduction rate with decomposition of anadromous fishes was experimentally investigated. Focusing on pink salmon Oncorhynchus gorbuscha which has the largest resource of anadromous fishes in east Hok...
ESTIMATION OF ROTATION ANGLE AND CRITICAL VELOCITY OF MARIMOS DUE TO WAVES AND CURRENTS
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75(2) I_775-I_780 Nov 2019 [Refereed]
MEASUREMENT OF SEAGRASS DISTRIBUTION BY SATELLITE DATA AND VARIDATION USING DISSOLVED INORGANIC CARBON IN LAGOON
Katsuaki KOMAI, Hiroshi HAYAKAWA, Tatsuya SATO, and Keisuke NAKAYAMA
Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering) 75(2) I_397-I_402 Nov 2019 [Refereed]
Seagrass distribution in a lagoon located near the Sea of Okhotsk was estimated from satellite data, and varidated using DIC and its variation obtained by field observation data. Seagrass distribution was made by converted data from averaged NDVI ...
WATER SCIENCE AND TECHNOLOGY 80(1) 11-24 Jul 2019 [Refereed]
This paper aims to assess the performance of a distributed hydrological model for simulating the transport of various heavy metals in rivers, to enhance and support environmental monitoring strategies for rivers in developing countries. In this co...
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 75(2) I_504-I_509 2019 [Refereed]
To reduce the impact of global warming, "blue carbon" has been received attention as carbon stocks which can be captured and stored by marine plants and animals. With the growth of eelgrass, Zostera marina, carbon dioxide can be absorbed, a...
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 75(2) I_977-I_982 2019
We developed the hydrodynamic model of Yatsushiro Sea in order to analyze stratified flow field and water quality in Yatsushiro Sea. Yatsushiro Sea is connected to Ariake Sea with very narrow strait, which cannot be modelled due to the limitation ...
ESTUARINE COASTAL AND SHELF SCIENCE 212 286-293 Nov 2018 [Refereed]
Total nitrogen (TN), consisting of total particulate nitrogen (TPN) and total dissolved nitrogen (TDN) pools, may be transported to the ocean not only via river channels but also from across the entire river basin via groundwater and migratory ani...
TADA Kazufumi, NAKAYAMA Keisuke, KOMAI Katsuaki, TSAI Jeng-Wei, SATO Yukinobu, KUWAE Tomohiro
Journal of Japan Society of Civil Engineers, Ser. B3 (Ocean Engineering) 74(2) I_444-I_449 2018 [Refereed]
We developed dissolved inorganic carbon (DIC) model in Lake Komuke of Hokkaido Island in order to investigate partial CO2 pressure. Three-dimensional hydrodynamic model was applied to model DIC since Lake Komuke is one of the typi...
SAKAGUCHI Shino, NAKAYAMA Keisuke, VU Thuy Thi Thu, KOMAI Katsuaki, NIELSEN Peter
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 74(2) I_1-I_6 2018 [Refereed]
It was revealed that a solitary wave is highly reproduced by using Fully-nonlinerar and strongly Dispersive Surface wave equations (FDS equations) comparing with theoretical solutions. Furthermore, we improved the FDS equations by expanding ...
