the last layer is infinity. This is specified as any value less than 0.0 (=-999.0 for example). The thickness value less than 0.0 is also used as end of earth model data. The format for Earth Model Data (v34) is shown in Appendix B. Field Description Source REs will provide this value through NAME may be up to 12 characters. This name EPPRE, and NAME should be different than the Standard US and TSPs will Canada Earth Models. No default allowed. provide this value through the workbook. REs will provide this value through Earth Model scaling factor used when calculating EPPRE, and BETA FACTER branch induced electric field for Benchmark GMD TSPs will event. BETAFTR=1 by default provide this value through the workbook. REs will provide this value through Description of the earth model. NAME maybe up to EPPRE, and DESCRIPTION 72 characters. This is for information purpose only. TSPs will DESC = by default “ provide this value through the workbook. REs will provide this value through EPPRE, and RESISTIVITY LAYER 1 Layer 1 Resistivity in ohm-m. No default allowed. TSPs will provide this value through the workbook. REs will provide this value through EPPRE, and THICKNESS LAYER 1 Layer 1 Thickness in km. No default allowed. TSPs will provide this value through the workbook. ROS Approved: June 9, 2016
the last layer is infinity. This is specified as any value less than 0.0 (=-999.0 for example). The thickness value less than 0.0 is also used as end of earth model data. The format for Earth Model Data (v34) is shown in Appendix B. Field Description Source NAME NAME may be up to 12 characters. This name should be different than the Standard US and Canada Earth Models. No default allowed. REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. BETA FACTER Earth Model scaling factor used when calculating branch induced electric field for Benchmark GMD event. BETAFTR=1 by default REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. DESCRIPTION Description of the earth model. NAME maybe up to 72 characters. This is for information purpose only. DESC = “ by default REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. RESISTIVITY LAYER 1 Layer 1 Resistivity in ohm-m. No default allowed. REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. THICKNESS LAYER 1 Layer 1 Thickness in km. No default allowed. REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. ROS Approved: June 9, 2016
Procedure_Manual_PGDTF_06022016.docx