which allow for large scale map view analysis of the earth's surface have been increasingly helpful in revealing fault traces that have otherwise remained unrecognized. Remote Sensing techniques use imagery acquired by sensors mounted on satellites, aircraft, or even handheld to view different parts of the earth at different scales. Large scale images often unveil features that were difficult or impossible to see from previous available perspectives. Sudden 90 degree bends or jogs in a stream, or even an extended straight stretch could be possible indicators of a fault trace but when put into larger perspective can be aligned with other pieces of evidence to add confirmation. There could be a gentle elevation change that don't seem suspicious when walking over it, but when viewed remotely can show that it extends laterally in a straight line and could be evidence of an old fault scarp. Not only can Remote Sensing be useful in locating new fault traces, but it can also provide useful information when monitoring motion and identifying characteristics of known faults. Fault traces on geologic maps On a geologic map, fault traces are drawn in as lines. Direction of dip, degree of dip, type of fault, and motion along the fault can all be indicated using different symbols. See also Surface rupture Sources USGS Earthquake Hazards Program: Visual Glossary References Seismic faults Structural geology