text: Laurie Padman led a contemporary survey project to monitor a feature named for this man.
full_question: Laurie Padman led a contemporary survey project to monitor a feature named for this man. This man discovered a feature that he simply called “The Barrier,” which today bears his name and completely surrounds Roosevelt Island. The Cape Roberts Project was conducted at a research outpost in a sea named for this man, which contains a port at McMurdo Sound. He commanded the Erebus and the Terror on an 1839 expedition. The southernmost sea and a massive ice shelf are named after, for 10 points, what explorer of Antarctica?
first_sentence: Laurie Padman led a contemporary survey project to monitor a feature named for this man.