# Sverdrup

## Unit of measurement of the volumetric rate of transport of ocean currents / From Wikipedia, the free encyclopedia

In oceanography, the **sverdrup** (symbol: **Sv**) is a non-SI metric unit of volumetric flow rate, with 1 Sv equal to 1 million cubic metres per second (264,172,052 US gal/s).[1][2] It is equivalent to the SI derived unit cubic hectometer per second (symbol: hm^{3}/s or hm^{3}⋅s^{−1}): 1 Sv is equal to 1 hm^{3}/s. It is used almost exclusively in oceanography to measure the volumetric rate of transport of ocean currents. It is named after Harald Sverdrup.

**Quick facts: Sverdrup, Unit of, Symbol, Conversions ...**▼

Sverdrup | |
---|---|

Unit of | Volumetric flow rate |

Symbol | Sv |

Conversions | |

1 Sv in ... | ... is equal to ... |

m^{3}/s | 1 million |

US gallons/s | 264 million |

cu ft/s | 35 million |

One sverdrup is about five times what is carried by the world’s largest river, the Amazon. In the context of ocean currents, a volume of one million cubic meters may be 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.

The sverdrup is distinct from the SI sievert unit or the non-SI svedberg unit. All three use the same symbol. They are not related.