…Depending on the tidal action, seven tidal levels are distinguished within the intertidal zone: maximum high tide at spring tide, mean high tide at spring tide, mean high tide at neap tide, mean tide level, mean low tide at neap tide, mean low tide at spring tide, and mean low tide at spring tide. The area above the mean high tide at neap tide is called the supralittoral zone, the area between the mean high tide and mean low tide at neap tide is called the mediolittoral zone, and the area below the mean low tide at neap tide is called the subtidal zone. The intertidal zone can be rocky or sandy/muddy, and the larger areas of sandy/muddy water are called tidal flats or beaches. … *Some of the terminology that refers to "infralittoral zone" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…潮間帯内は潮汐の行動によって,上部から大潮最大満潮線,大潮平均満潮線,小潮平均満潮線,平均潮位,小潮平均干潮線,大潮平均干潮線,大潮最低干潮線の七つの潮位が区別される。小潮平均満潮線以上を潮上帯supralittoral zoneとよび,小潮の平均満潮線と平均干潮線の間を中潮帯mediolittoral zone,小潮平均干潮線以下を潮下帯infralittoral zoneとよんでいる。潮間帯には岩礁性と砂泥性のものがあり,砂泥性で広いものは干潟,砂浜といわれている。… ※「infralittoral zone」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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