|Unit of||Volumetric flow rate|
|1 Sv in ...||... is equal to ...|
|US gallons/s||264 million|
|cu ft/s||35 million|
In oceanography, a sverdrup (symbol: Sv) is a non-SI metric unit of flow, with 1 Sv equal to 1 million cubic metres per second (260,000,000 US gal/s); it is equivalent to the SI derived unit cubic hectometer per second (symbol: hm3/s or hm3⋅s−1). It is used almost exclusively in oceanography to measure the volumetric rate of transport of ocean currents. It is named after Harald Sverdrup. It is distinct from the SI unit sievert or the non-SI svedberg, which use the same symbol.
In the context of ocean currents, one million cubic meters per second may be most easily imagined as a "slice" of ocean with dimensions 1 km × 1 km × 1 m (width × length × thickness). At this scale, these units can be more easily compared in terms of width of the current (several km), depth (hundreds of meters), and current speed (as meters per second). Thus, a hypothetical current 50 km wide, 500 m (0.5 km) deep, and moving at 2 m/s would be transporting 50 Sv of water.
- "Glossary". Ocean Surface Currents. University of Miami Rosenstiel School of Marine and Atmospheric Science. Retrieved 2019-04-15.
- "Sverdrups & Brine". Ecoworld. Archived from the original on 20 January 2011. Retrieved 12 August 2017.
- "The Gulf Stream". Ocean Surface Currents. University of Miami Rosenstiel School of Marine and Atmospheric Science. Retrieved 12 August 2017.
- "The Antarctic Circumpolar Current". Ocean Surface Currents. University of Miami Rosenstiel School of Marine and Atmospheric Science. Retrieved 12 August 2017.
- Lagerloef, Gary; Schmitt, Raymond; Schanze, Julian; Kao, Hsun-Ying (2010-12-01). "The Ocean and the Global Water Cycle". Oceanography. 23 (4): 82–93. doi:10.5670/oceanog.2010.07.