Low water

Japanese: 干潮 - かんちょう(英語表記)low water
Low water

When the sea level rises and falls due to tides, its minimum height is called low tide (or storm tide). When it reaches its maximum height, it is called high tide (or storm tide). Usually, high and low tides occur twice a day, but depending on the location and the phase of the moon, they may occur once or three or more times. The two low tides in a day can be of considerable difference in height. The lower low tide is called low tide, and the higher low tide is called high tide. On the Pacific coast, low and low tides occur during the daytime at spring tides from the vernal equinox to early summer, so people go out to the rocks to enjoy activities such as clam digging.

[Masami Okada]

[Reference] | Spring tide | Tide | High tide

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

潮汐(ちょうせき)による海面の昇降で、高さが極小となった状態を干潮(または低潮)という。極大となった状態は満潮(または高潮(こうちょう))という。通常は満潮と干潮とがそれぞれ1日2回生じるが、場所と月齢などによって1回または3回以上となることもある。1日2回の干潮で、その高さがかなり異なることがある。低いほうの干潮を低低潮、高いほうの干潮を高低潮という。太平洋岸では、春分から初夏にかけての大潮(おおしお)時の低低潮が日中に現れるので、潮干狩(しおひがり)など、磯(いそ)遊びが行われる。

[岡田正実]

[参照項目] | 大潮 | 潮汐 | 満潮

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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