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When attempting to determine a fault's seismic history, geophysicists like Dr. Estella Atekwana at the University of Delaware rely in part on data about the fault's physical dimensions and geological . For the Juniper Mountain fault in Malheur County, Oregon, the US Geological Survey compiles such data in several ways: by exchanging information with state geological surveys, by linking maps of the fault with sources that offer detailed descriptions of it, and by maintaining a database of quantitative data such as the fault's length (17 km).