geostrophic current


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geostrophic current

[¦jē·ō¦sträf·ik ′kə·rənt]
(geophysics)
A current defined by assuming the existence of an exact balance between the horizontal pressure gradient force and the Coriolis force.
References in periodicals archive ?
4) Geostrophic currents: Geostrophic current estimates show that errors due to pure temperature XBT biases, as estimated for tropical Atlantic currents (Goes et al.
Based on previous studies, corrections are not required for calculations of MHT/MOC, geostrophic currents, and mixed layer depth calculations.
It may be appreciated that COSE completely removes the spurious a geostrophic current present in HY COM at 30[degrees]S (Fig.
Weekly sea level and geostrophic current data with a spatial resolution of 25 km were obtained from the combined product of the Topex/Poseidon, ERS and Jason missions 1-2, distributed by AVISO (http://aviso.
The time scales of variability for sea level and geostrophic current were computed using the MTM SVD method and are shown in Figure 6.
Figure 3 shows the evolution of the geostrophic current derived from June 2006 to May 2007.
Fields of surface Chl-a, together with the geostrophic current derived from satellite altimetry data during June-July 2003 are shown in Figure 7.
0 mm ML (circles), mean sea surface level anomaly (cm, colors), and vectors of associated geostrophic currents, b) paralarvae abundance [greater than or equal to]2.
where u' and v' = the zonal and meridional components of geostrophic currents, respectively.
These gyres are formed by surface currents that are primarily a combination of Ekman currents driven by local wind and geostrophic currents maintained by the balance between sea level gradients and the Coriolis force.
2004) demonstrated significant effects (among others) of geostrophic currents generated by sea level anomalies (SLA) and lunar day on swordfish catch and catch per unit of effort (CPUE, number of fish per 1000 hooks).
Associated with this extreme life history pattern, ommastrephids tend to combine extended spawning seasons, long reproductive migrations, and the passive transport of offspring by surface geostrophic currents to produce both seasonal and geographic population units (stocks); this complex structure is regarded as an evolutionary strategy to minimize the risks of semelparity (O'Dor, 1998).