The total amount of chlorine, bromine, and iodine contained in 1 kg of seawater, expressed in grams, is called the chlorine content. However, it is assumed that bromine and iodine have been replaced with chlorine. The unit of chlorine content is per thousand (per mille). As the ionic composition of seawater is constant regardless of location, there is a fixed relationship between the chlorine content and salinity, and the chlorine content is usually measured and then converted into salinity. (Nagata) Source: Japan Hydrographic Association, Ocean Information Research Center, Encyclopedia of the Sea |
海水1kg中に含まれる塩素、臭素、よう素の全量をグラムで表したものを塩素量という。ただし、臭素とよう素は塩素に置換されているものとする。塩素量の 単位には千分率(パーミル)を用いる。海水のイオン組成が場所によらず一定であるので、塩素量と塩分の間には一定の関係があり、通常塩素量を測定してそれ を塩分に換算することが行われる。 (永田)
出典 (財)日本水路協会 海洋情報研究センター海の事典について 情報 |
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