'M'w 6.0 South Napa Earthquake of August 24, 2014--Observations of Surface Faulting and Ground Deformation, with Recommendations for Improving Post-Earthquake Field Investigations [open pdf - 28MB]
From the Document: "The 'M'w [moment magnitude] 6.0 South Napa earthquake of August 24, 2014, produced complex and extensive surface faulting and other ground deformation features. Following the event, geologists made more than 1,200 field observations at locations where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. At a few locations, large-scale, detailed, field-based maps of fault rupture and ground deformation were produced. The South Napa earthquake response was one of the first times when post-earthquake reconnaissance data were mostly collected and disseminated electronically. The advantages and opportunities these new methods bring to our research also pose new challenges to large-scale compilation efforts and demonstrate the value of developing guidelines and better standardization across the community to more optimally utilize developing technology in future post-earthquake investigations. Some suggestions for standardizing the collection and dissemination of post-earthquake field reconnaissance data are provided herein."
Open-File Report 2019-1018
U.S. Geological Survey: https://www.usgs.gov/