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http://dbpedia.org/ontology/abstract 鹹潮(又稱鹹潮上溯、鹽水入侵),是一種天然水文現象。當淡水河流量不足,令海水倒灌,鹹鹹潮(又稱鹹潮上溯、鹽水入侵),是一種天然水文現象。當淡水河流量不足,令海水倒灌,鹹淡水混合造成上游河道水體變鹹,即形成鹹潮。鹹潮一般發生於冬季或乾旱的季節,即每年十月至翌年三月之間出現在河海交匯處,例如长江三角洲與珠江三角洲等處之周邊地區。 影響鹹潮的主要因素有天氣變化及潮汐漲退。尤其在天文大潮時,鹹潮上溯的情況更為嚴重。另外,全球气候变化导致海平面上升过程讓鹹潮十分缓慢地增加,但长期的累积也在逐渐显现。 鹹度(亦稱鹽度)測量單位為度,一度為一升河水中大且微克氯化物(包括氯化鈉),据中國《》(CJ3020-93),氯化物含量均应小于250 mg/L(即250度)。当河道水体含盐度超过250度就不達供水水质标准。如钢铁工业生产要求总鹹度不能超过200度,电厂锅炉用水要求鹹度300度以下;水稻育秧期則要求鹹度低於600度。能超过200度,电厂锅炉用水要求鹹度300度以下;水稻育秧期則要求鹹度低於600度。 , Salt tide is a phenomenon in which the lowSalt tide is a phenomenon in which the lower course of a river, with its low altitude with respect to the sea level, becomes salty when the discharge of the river is low during dry season, usually worsened by the result of astronomical high tide. The lower course Xijiang (West River) in Guangdong, China was periodically affected and has been widely reported since 2004, for bringing shortage of fresh water supply to the western part of the Pearl River Delta. The salinity level of tap water at Zhuhai was reported to be as high as 800 mg per litre in late February 2006, more than 3 times higher than the World Health Organization standard of 250 mg.ld Health Organization standard of 250 mg.
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rdfs:comment 鹹潮(又稱鹹潮上溯、鹽水入侵),是一種天然水文現象。當淡水河流量不足,令海水倒灌,鹹鹹潮(又稱鹹潮上溯、鹽水入侵),是一種天然水文現象。當淡水河流量不足,令海水倒灌,鹹淡水混合造成上游河道水體變鹹,即形成鹹潮。鹹潮一般發生於冬季或乾旱的季節,即每年十月至翌年三月之間出現在河海交匯處,例如长江三角洲與珠江三角洲等處之周邊地區。 影響鹹潮的主要因素有天氣變化及潮汐漲退。尤其在天文大潮時,鹹潮上溯的情況更為嚴重。另外,全球气候变化导致海平面上升过程讓鹹潮十分缓慢地增加,但长期的累积也在逐渐显现。 鹹度(亦稱鹽度)測量單位為度,一度為一升河水中大且微克氯化物(包括氯化鈉),据中國《》(CJ3020-93),氯化物含量均应小于250 mg/L(即250度)。当河道水体含盐度超过250度就不達供水水质标准。如钢铁工业生产要求总鹹度不能超过200度,电厂锅炉用水要求鹹度300度以下;水稻育秧期則要求鹹度低於600度。能超过200度,电厂锅炉用水要求鹹度300度以下;水稻育秧期則要求鹹度低於600度。 , Salt tide is a phenomenon in which the lower course of a river, with its low altitude with respect to the sea level, becomes salty when the discharge of the river is low during dry season, usually worsened by the result of astronomical high tide.
rdfs:label 鹹潮 , Salt tide
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