"The National Science Foundation (NSF) is responsible for managing and coordinating the U.S. Antarctic Program (USAP) on behalf of the nation. This includes providing support personnel and facilities and coordinating transportation and other logistics for scientific research. Due to the lapse in appropriation, funds for this support will be depleted on or about October 14, 2013. Without additional funding, NSF has directed its Antarctic support contractor to begin planning and implementing caretaker status for research stations, ships and other assets. The agency is required to take this step as a result of the absence of appropriation and the Antideficiency Act."
Keith's note: There is a Change.org petition titled "Congress: Shutdown Exemption for the United States Antarctic Program".