P-wave velocity, caliper system (PWAVE-C) 

P-wave velocity data were measured on undisturbed section halves (JRSO-defined x-axis) and/or discrete cube and cylinder samples (x, y, or z-axis) using pairs of piezoelectric transducers mounted on a caliper system. Report includes P-wave velocity in x, y, and/or z-direction, caliper separation, traveltime between transducers, and first arrival picks.

Data File format

	Exp: expedition number
	Site: site number
	Hole: hole number
	Core: core number
	Type: type indicates the coring tool used to recover the core (typical types are F, H, R, X).
	Sect: section number
	A/W: archive (A) or working (W) section half.
	Offset (cm): position of observation made on a sample (e.g., section half, cubes) measured relative to the top of the sample.
	Depth CSF-A (m): location of the observation expressed relative to the top of a hole.
	Depth [other] (m): location of the observation expressed relative to the top of a hole. The location is presented in a scale selected by the science party or the report user.
	P-wave velocity x (m/s): velocity of pressure wave through sample in the x axis (computer pick).
	P-wave velocity y (m/s): velocity of pressure wave through sample in the y axis (computer pick).
	P-wave velocity z (m/s): velocity of pressure wave through sample in the z axis (computer pick).
	P-wave velocity (unknown axis) (m/s): velocity of pressure wave through sample where the axis is unknown (computer pick).
	Caliper separation (mm): distance between the transducers on the caliper.
	Sonic traveltime (µs): manually picked traveltime of the sonic wave from transducer to transducer through the sample.
	P-wave velocity x [manual] (m/s): velocity of P-wave through sample in the x axis, calculated using the manually picked traveltime.
	P-wave velocity y [manual] (m/s): velocity of P-wave through sample in the y axis, calculated using the manually picked traveltime.
	P-wave velocity z [manual] (m/s): velocity of P-wave through sample in the z axis, calculated using the manually picked traveltime.
	P-wave velocity (unknown axis) [manual] (m/s): velocity of pressure wave through sample when the axis is unclear, calculated using the manually picked traveltime.
	Sonic traveltime [manual] (µs): manually picked traveltime of the sonic wave from transducer to transducer through the sample.
	Transducer signal file: file containing the raw P-wave signal.
	Configuration filename: P-wave caliper instrument configuration file.
	Instrument: abbreviation or mnemonic for the P-wave sensing device used to make this observation.
	Instrument group: abbreviation or mnemonic for the data collection device used to acquire this observation.
	Timestamp (UTC): date and time the observation was made.
	Text ID: automatically generated unique database identifier for a sample, visible on printed labels.
	Test No: unique number associated with the instrument measurement steps that produced these data. 
	Sample comments: observations recorded about the sample itself.
	Test comments: observations about a measurement or the measurement process; some measurement observations may be under Result comments.
	Result comments: observations about a measurement or the measurement process; some measurement observations may be under Test Comments.