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U.S. Geological Survey Data Series 620

Field Activity Logs

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Field Activity Collection System (FACS) Logs

FACS logs are standardized forms used by the USGS CMGP. For more information see Click on the links below to access PDF files containing the FACS crew, equipment, operation, and overview logs. Digital FACS logs were generated after the cruise, by A. Forde, using the handwritten logbooks and personal accounts of the crew members. Handwritten FACS logs were completed in the field by C. Worley. All logs can be found within the logbooks folder.

To obtain information on previous, current, and future field work being conducted by the St. Petersburg office, please go to Information on field activities conducted within the CMGP nationally can be found at

Digital FACS Logs Handwritten FACS Logs
Crew (11-KB PDF) Crew (13-KB PDF)
Equipment (47-KB PDF) Equipment (12-KB PDF)
Overview (12-KB PDF) Operation (480-KB PDF)
Overview (24-KB PDF)

Figure 1 displays the acquisition geometry.

Table 1 is a summary of acquisition parameters.

Table 2 lists trackline statistics.

NOTE: PDF files may be viewed using free Adobe Reader software. If unable to access the PDF files, please contact

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