Gravity observations in the Wright Valley Area, Victoria Land, Antarctica

Abstract

Measurements of the acceleration due to gravity have been made in the Wright Valley area of Victoria Land, Antarctica. On an east-west traverse from the coast of McMurdo Sound, across the Wilson Piedmont and Lower Wright Glaciers and along the Wright Valley the Bouguer anomaly varies from — 10 mgal at the coast to — 80 mgal at the western edge of the Lower Wright Glacier and to — 110 mgal at the head of the valley. The gradient near the coast is about 5 mgal/km; along the valley it is about 1 mgal/km.