James Clark Ross reaches a Farthest South of 78°09'30"S (1842)

During the Ross expedition, James Clark Ross explored and roughly charted the eastern side of James Ross Island in 1842, discovering and naming Snow Hill Island and Seymour Island. A Farthest South of 78°09'30"S on 23 January 1842 is attributed to him, but that date and latitude rest solely on the legacy record and are not confirmed by the supplied passages.

Episodes

Background and detail

Background. The Ross expedition (1839–1843) was a scientific voyage led by James Clark Ross aboard HMS Erebus and HMS Terror. After initial work in the Ross Sea, the expedition moved to the Antarctic Peninsula in the summer of 1842–1843. Ross explored the eastern side of James Ross Island, a large island separated from the mainland by Prince Gustav Channel, charting points along its coast.

Charting James Ross Island. Ross discovered and roughly charted several points along the eastern side of James Ross Island during his 1842 expedition. The island, named later by the Swedish Antarctic Expedition in honor of Ross, extends 40 nautical miles in a north-south direction. Ross's work in this area included naming nearby features such as Snow Hill Island and Seymour Island.

Farthest South Record. A Farthest South latitude of 78°09'30"S on 23 January 1842 is attributed to James Clark Ross, but this date and latitude derive solely from the legacy database row (00dadf4c-afd6-40cb-89cc-010e4507743b) and are unsupported by the supplied passages. Those passages place Ross's exploration of the eastern side of James Ross Island in the 1842–1843 season rather than specifically in January 1842, and the occurrence locality is itself an inference from the charting activity.

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Sources

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.