…However, compared to air masses, the characteristics of water masses and the ocean areas they occupy are less likely to change over time and are more stable. Among the quantities that characterize water masses, water temperature and salinity are particularly important, and oceanographic definitions of water masses are usually made using the temperature-salinity diagram ( T - S diagram). This T - S diagram was introduced by B. Helland-Hansen in 1916, and later HU Sverdrup and others used it to classify water masses in the world's oceans (Figure). … *Some of the terms used in the "temperature-salinity diagram" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…しかし,気団に比べると水塊の特性や占める海域は,時間変化しにくく安定である。 水塊の特徴を表す諸量のうち,水温と塩分は特に重要で,水塊の海洋学的定義は温度‐塩分図(T‐S図)によって行われるのが普通である。このT‐S図は1916年にヘランド・ハンセンB.Helland‐Hansenによって導入され,後にH.U.スベルドルップらはそれを用いて世界中の海洋の水塊分類を行った(図)。… ※「温度‐塩分図」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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