CHANGES IN CHANNEL PATTERNS ACROSS FAULT SCARPS - A COMPARISON BETWEEN THEORY AND OBSERVATIONS
This study utilizes high resolution LIDAR data to examine the active Baton Rouge growth fault, in southern Louisiana. Vegetation is removed from the dataset, which exposes numerous fault segments and the rivers that flow across the fault system. This dataset provides an excellent opportunity to compare theory with field observations of an active fault scarp.
The sinuosity (P=Channel length/ Valley length) has been carefully measured for rivers and creeks that cross segments of this clearly active fault system. The sinuosity for the rivers in this area vary between 1.2 and 2.7. We find that, while some changes are observed at faults, in general there is not a clear relationship between the changes in sinuosity and the location of the fault scarps. We conclude that other measures, such as the gradient-slope index, may be better indicators of subtle tectonic activity.