Collect seawater from the coast around Funka Bay in Hokkaido
Funka Bay has a radius of about 30 kilometers. To cover the surrounding coast in one day, we leave Hakodate in the morning and take the expressway to each location. If we can complete the sampling at each shore in 30 minutes, we can return to Hakodate in the evening. The MIWA sampler is essential to collect water from the coast in such a short time.
We collected seawater from Sunasaki to Muroran, as shown on the coastline in the figure below.
Reproduced from Fig. 1 in the following reference
This is the result of collecting seawater from the coast and measuring the concentration of bromoform. Bromoform is a type of organic halogen gas released by large algae (kelp) that live on the coast. The concentration was found to be high on the coast of Usu, where kelp thrives.
Reproduced from Fig. 5 in the following reference
We'd like to continue observing the water at the coast, but we are on pause because I can't find a fishing enthusiast (and analysis enthusiast) who can operate the MIWA sampler.