海水
Also known as oceanwater, seawater, ocean water
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately of dissolved salts (predominantly sodium () and chloride () ions). The average density at the surface is 1.025 kg/L. Seawater is denser than both fresh water and pure water (density 1.0 kg/L at ) because the dissolved salts increase the mass by a larger proportion than the volume. The freezing point of seawater decreases as salt concentrati
AI overview
Seawater is the salty water found in oceans and seas, containing about 3.5% dissolved salts—mainly sodium and chloride ions—which make it denser and heavier than fresh water. Understanding seawater's composition and properties matters because it affects ocean behavior, marine life, and how saltwater interacts with ships and coastal environments.
AI-generated from the Wikipedia summary — may contain errors.
Research
104,676 papers- Review on sea water quality (SWQ) monitoring using satellite remote sensing techniques (SRST).ReviewMarine pollution bulletin · 2025Rahman MM, Shults R, Tiwari SP et al.DOI: 10.1016/j.marpolbul.2025.118108
- Mineral-Enriched Deep-Sea Water Modulates Lactate Metabolism via PGC-1α-Mediated Metabolic Reprogramming.Marine drugs · 2019Ha BG, Jung SS, Jang YK et al.DOI: 10.3390/md17110611
- Dead sea water intoxication.Pediatric emergency care · 2012Levy-Khademi F, Brooks R, Maayan C et al.DOI: 10.1097/PEC.0b013e31826289f2
- Impact of sea-level rise on sea water intrusion in coastal aquifers.Ground water · 2009Werner AD, Simmons CTDOI: 10.1111/j.1745-6584.2008.00535.x
Article · 中文
海水即是海洋內的咸水，佔據地球水體的97%，一公升海水有約35公克的鹽溶於其中，還有少量的微量元素。海水是複雜的溶液，並且會隨著時間變動，例如地球早期的海水是酸性的，而非現在因為融入大量鹽類物質而呈現的鹼性，但近代以來人類活動使海水水質出現過度變動，例如海洋酸化等問題，威脅著海洋生態系統的未來。
Abstract from DBpedia / Wikipedia · CC BY-SA