Magnetic remanence (SRM section)

This report provides measurements of magnetic remanence including natural remanent magnetization (NRM) and NRM after alternating field (AF) demagnetization. Magnetic remanence is measured using a 2G Enterprises superconducting rock magnetometer (SRM). This reports returns data from continuous measurements on section halves of cores.

SRM section data are often available for multiple demagnetization steps. In such cases, all measurements within a core section (for example, from 0 to 150 cm) are displayed for each demagnetization step based on the demagnetization sequence chosen by the shipboard scientists. This sequence is repeated for all sections within a core, and all cores within a hole.

Definitions:

    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 the observation made, measured relative to the top of a section half.
    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.
    Demag level (mT): level of alternating-field demagnetization applied by the SRM’s inline coils.
    Inclination background tray corrected (deg): inclination computed with tray and background (drift) correction.
    Declination background tray corrected (deg): declination computed with tray and background (drift) correction.
    Intensity background tray corrected (A/m): intensity computed with tray and background (drift) correction.
    Inclination raw (deg): inclination computed from magnetic moment data.
    Declination raw (deg): declination computed from magnetic moment data.
    Intensity raw (A/m): intensity computed from magnetic moment data.
    Magnetic moment x|y|z (Am^2): magnetic moment raw data from SQUID axes, with sign corrected to match IODP orientation conventions.
    Sample orientation: orientation of section measured (e.g., single line).
    Raw file filename: ASCII file with raw SRM data.
    Timestamp (UTC): time file was uploaded, which is typically a few minutes to hours after data were acquired.
    Instrument: abbreviation for the magnetometer used to make this measurement (SRM).
    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.