McFarlane Strait is a narrow sea channel in the South Shetland Islands of Antarctica. It separates Livingston Island to the east from Greenwich Island to the west and forms part of the maritime passage between the Bransfield Strait and the open Southern Ocean.
Geography
- Location: Approximately centered at 62°30′S 60°15′W.
- Length: Roughly 24 km (15 mi) extending in an east‑west orientation.
- Width: Varies between 2 km and 5 km (1–3 mi) along its course.
- The strait lies within the Antarctic Treaty area and is subject to the environmental protections accorded to the region.
Hydrography
McFarlane Strait is characterized by cold, dense seawater typical of Antarctic coastal waters. Seasonal sea‑ice may partially or completely obstruct navigation during the winter months, while the summer months often see clearer open water allowing limited vessel passage.
Discovery and Naming
The name “McFarlane Strait” appears on early 19th‑century British nautical charts of the South Shetland Islands. It is believed to have been assigned by British sealers or explorers, possibly in honor of a ship’s captain or a sponsor bearing the surname McFarlane; however, the precise origin of the name has not been definitively documented.
Scientific and Operational Significance
The strait lies near several research stations on Livingston Island, including the Bulgarian St. Kliment Ohridski Base and the Spanish Juan Carlos I Antarctic Base. Its waters are occasionally surveyed for oceanographic and glaciological studies, contributing data on Antarctic circulation, sediment transport, and climate‑related processes.
Cartographic References
- SCAR Composite Gazetteer of Antarctica.
- British Admiralty charts (19th century).
Environmental Status
As part of the Antarctic ecosystem, McFarlane Strait is governed by the Protocol on Environmental Protection to the Antarctic Treaty, which regulates activities to minimize ecological impact. No permanent settlements exist on the strait itself.