Marie Byrd Land

Location and Size

Marie Byrd Land is a very large, unclaimed part of Antarctica. It covers an area of 1,610,000 km², making it the biggest unclaimed territory on Earth.

Discovery

This land was named after the wife of American naval officer Richard E. Byrd. He explored the area in the early 1900s.

Geography

The territory is located in West Antarctica, east of the Ross Ice Shelf and the Ross Sea, and south of the Pacific Ocean part of the Antarctic or Southern Ocean. It reaches eastward to a line between the head of the Ross Ice Shelf and the Eights Coast. The area between the Rockefeller Plateau and the Eights Coast is included based on Byrd’s discoveries.

Overview

Marie Byrd Land is a huge, remote part of Antarctica that no country has officially claimed. It is the largest unclaimed area on Earth, covering 1,610,000 km² (620,000 sq mi). This includes a place called the Eights Coast. In 1939, the President of the United States, Franklin D. Roosevelt, asked explorers to claim part of Antarctica for the United States. Although some explorers tried, the claim wasn’t made official until later, when the Antarctic Treaty System began in 1959. Some maps from the United States showed this area as belonging to them, and the United States Department of Defense believes they have good reasons for a claim. The western part of Marie Byrd Land is part of the Ross Dependency, claimed by New Zealand.

Five coastal areas make up Marie Byrd Land, listed from west to east:

Exploration

Marie Byrd Land was first explored from the west, near the Ross Sea. In 1902, explorer Robert Falcon Scott saw parts of the far western coast from his ship Discovery. He named nearby areas King Edward VII Land and the Alexandra Mountains. Later, in 1911, Roald Amundsen’s team visited some rocky areas in the same region.

During the 1920s and 1930s, American naval officer Richard E. Byrd led many trips to the area. In 1929, pilot Dean Smith helped find the Rockefeller Mountains and the Edsel Ford Ranges during flights. Byrd named the area after his wife, Marie. More trips on land followed, reaching places like the Fosdick Mountains and the Ruppert Coast.

In the 1950s and 1960s, the United States Navy organized many trips to Antarctica. They took photos from the air to map the land. They also set up research stations and traveled across the ice to study the ground below. These trips helped scientists learn more about the hidden valleys and mountains under the ice in Marie Byrd Land.

Research camps and stations

Marie Byrd Land has several important research camps and stations. The Operation Deep Freeze set up a base called Byrd Station in 1957. It was the main base inside West Antarctica for many years. In 1968, scientists drilled the first ice core here, going through the thick Antarctic ice. The station stopped working all year in 1972 but was reopened in 2009–2010 to help with research in northern West Antarctica.

There are also other stations, like the Russian station Russkaya, which operated from 1980 to 1990 and is now closed. Other camps, such as Siple Dome, help scientists study past climate by drilling into the ice. These camps support important research about our planet’s climate and ice.

Geography and geology

Marie Byrd Land is a large, unclaimed area of Antarctica. It is surrounded by the Amundsen Sea on one side and the Ross Sea and Ross Ice Shelf on the other. This area is mostly covered by a thick layer of ice called the West Antarctic Ice Sheet.

There are many mountains along the coast, and some are still active volcanoes. Under the ice, there are also hidden valleys and a special area called the West Antarctic Rift System. Scientists have found a hot spot deep below the surface that might help explain why parts of this area are higher up than others.