Survey of Precise Leveling Array Grand Teton National Park

Abstract

The line was surveyed in 1988, 1989, 1991, and 1993 in each case to a standard deviation of a few parts in 10 million (Sylvester et al., 1991; Byrd 1991). Compared to the initial survey in 1988, the 1993 survey revealed that the floor of Jackson Hole between the Snake River and the Teton Range tilted eastward about 12 microradians toward the Snake River, opposite to the sense of tilt in recent geologic time, judging from the southwestward slope of the valley toward the Teton Range front.