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## Orsi and Park/Durand fronts in Spatial form

The “Orsi fronts” are a commonly used climatological map of Southern
Ocean frontal distributions, published on the Southern Ocean Atlas
Database Page after Orsi et al (1995).

(This page once was at an old link now listed in this package CITATION
file as a note).

The “Park/Durand” fronts are a recent update on the locations of the
fronts from altimetry data, at the [SEANOE Altimetry-derived Antarctic
Circumpolar Current fronts
page](https://www.seanoe.org/data/00486/59800/).

See the package vignette/s for more details, and use
`citation("orsifronts")` for information on the sources.

# References

Orsi, A. H., T. Whitworth III and W. D. Nowlin, Jr. (1995). On the
meridional extent and fronts of the Antarctic Circumpolar Current,
Deep-Sea Research I, 42, 641-673.

Park Y.‐H., Park T., Kim T.‐W., Lee S.‐H., Hong C.‐S., Lee J.‐H., Rio
M.‐H., Pujol M.‐I., Ballarotta M., Durand I., Provost C. (2019).
Observations of the Antarctic Circumpolar Current over the Udintsev
Fracture Zone, the narrowest choke point in the Southern Ocean. Journal
of Geophysical Research: Oceans, -.
<https://doi.org/10.1029/2019JC015024>
