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Extracting high resolution temperature profiles from core and logging data : 

Extracting high resolution temperature profiles from core and logging data Matt O’Regan and Kate Moran Graduate School of Oceanography University of Rhode Island Narragansett, RI , USA

Slide2: 

(Leg 196 Scientific results) (Shipboard Science Party, 2001)

In-situ temperature Measurements (Leg 190): 

In-situ temperature Measurements (Leg 190) Unit1 Unit 2 Unit 3

Slide4: 

Relative Effects of Temperature National Standards Institute Pure water, 4 MPa Rseawater=1/(2.8 + .01*T) (Shipboard Science Party, 2001) Density/ Velocity Resistivity

Temperature Corrections and Porosity: 

Porosity (%) Depth (mbsf) Temperature Corrections and Porosity Unit1 Unit 2 Unit 3

Temperature Corrections and Velocity: 

Depth (mbsf) Temperature Corrections and Velocity Unit 2 Unit 3 Wyllie’s Time Averaged Equation: 1/Vlog = 1/Vlab+(/Vwater-insitu - /Vwater-lab)

Slide7: 

Empirical Temperature-Velocity Relationships

Resistivity of NaCl Solutions: 

Resistivity of NaCl Solutions

Leg 196 Tool Configuration: 

Leg 196 Tool Configuration 5 Measurements of Resistivity -Bit (Rbit) -Ring (Rring) -Shallow -Medium -Deep

Temperature and LWD Resistivity: 

Temperature and LWD Resistivity Unit 2 Unit 3

Temperature Corrections and Resistivity: 

Temperature Corrections and Resistivity Unit1 Unit 2 Unit 3

Slide12: 

FFlog = FFcore Rlog/Rwater = Rcore/Rwater Rlog*[2.8+0.1*Tinsitu] = Rcore*[2.8+0.1*Tlab] Rlog*[2.8+0.1*Tinsitu] = (Rcore*[2.8+0.1*Tlab])/k

Temperature Predictions: 

Temperature Predictions Unit1 Unit 2 Unit 3

Summary: 

Summary

Slide16: 

BOH BOH BOH National Standards Institute Pure water, 4 MPa Rseawater=1/(2.8 + .01*T) (Shipboard Science Party, 2001) Density (kg/m3)

Consolidation Data Leg 131: 

Consolidation Data Leg 131

Other Temperature Predictions: 

Other Temperature Predictions

Pore Water Salinity: 

Pore Water Salinity

Porosity-Seismic Transect: 

Porosity-Seismic Transect

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