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Table T13. Acronyms and units used for downhole wireline tools and measurements, Expedition 329.

Tool Output Explanation Unit
DIT         Dual Induction Tool  
IDPH Deep induction resistivity Ωm
IMPH Medium induction resistivity Ωm
SFLU Spherically focused resistivity Ωm
FMS         Formation MicroScanner  
C1, C2 Orthogonal hole diameters Inch
P1AZ Pad 1 azimuth Degrees
  Spatially oriented resistivity images of borehole wall  
GPIT           General Purpose Inclinometry Tool  
DEVI Hole deviation Degrees
HAZI Hole azimuth Degrees
Fx, Fy, Fz Earth's magnetic field (three orthogonal components) Degrees
Ax, Ay, Az Acceleration (three orthogonal components) m/s2
HLDS           Hostile Environment Litho-Density Sonde  
RHOM Bulk density g/cm3
PEFL Photoelectric effect barn/e
LCAL Caliper (measure of borehole diameter) Inch
DRH Bulk density correction g/cm3
HNGS             Hostile Environment Gamma Ray Sonde  
HSGR Standard (total) gamma ray gAPI
HCGR Computed gamma ray (HSGR minus uranium contribution) gAPI
HFK Potassium wt%
HTHO Thorium ppm
HURA Uranium ppm

For the complete list of acronyms used in IODP and for additional information about tool physics, consult IODP-USIO Science Services, LDEO, at

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