E4D User Guide

E4D Run Configuration File (e4d.inp)

The run configuration file for E4D must be named <e4d.inp>. It is the first file read by E4D, and contains the names of input files and other options necessary for E4D to execute a particular run mode.

See File Syntax Rules for specific details.

Variable Name Description
run_mode

char

run_mode specifies the mode that E4D should execute.

run_mode=ERT1

Mesh generation for electrical resistivity modeling and inversion

run_mode=SIP1

Mesh generation for complex resistivity modeling and inversion

run_mode=ERTTank1

Mesh generation for electrical resistivity modeling and inversion with tank boundaries

run_mode=SIPTank1

Mesh generation for complex resistivity modeling and inversion with tank boundaries
mesh_config_filename

(char)

mesh_config_filename is name of the mesh configuration file (must end in .cfg).

Example 

ERTTank1	run mode
two_blocks.cfg	mesh configuration file name
Variable Name Description
run_mode

char

run_mode specifies the mode that E4D should execute.

run_mode=ERT2

Electrical resistivity survey numerical solution simulation

run_mode='ERTanalytic'

Electrical resistivity survey analytic solution simulation

run_mode=SIP2

Complex potential numerical solution simulation

run_mode=ERTTank2

Electrical resistivity survey numerical solution simulation with a tank boundary

run_mode=SIPTank2

Complex potential numerical solution simulation with a tank boundary
mesh_file

(char)

mesh_file should be set to <e4d_mesh>.1.node, or <e4d_mesh>.1.ele, where <e4d_mesh> is the prefix of the mesh files created during mesh generation.

survey_file

(char)

survey_file is the name of the user-created survey file.

conductivity_file

(char)

conductivity_file is the name of a conductivity file or a text file containing a list of conductivity files.
out_opts_file

(char)

out_opts_file is the name of the output options file.

Example 

SIP2	             run mode
two_blocks.1.node	 mesh node file name
two_blocks.srv	     survey file name
two_blocks.sig	     conductivity file name
two_blocks.out	     output options file name
Variable Name Description
run_mode

char

run_mode specifies the mode that E4D should execute.

run_mode=ERT3

Electrical resistivity inversion for a single survey

run_mode=ERTTank3

Electrical resistivity inversion for a single survey with a tank boundary
mesh_file

(char)

mesh_file should be set to <e4d_mesh>.1.node, or <e4d_mesh>.1.ele, where <e4d_mesh> is the prefix of the mesh files created during mesh generation.

survey_file

(char)

survey_file is the name of the user-created survey file.

starting_conductivity

(char)

starting_conductivity is the name of a conductivity file to be used as the starting model.

starting_conductivity=name of conductivity file

Specified conductivity file will be used

starting_conductivity='average'

The calculated average apparent resistivity will be used

starting_conductivity=real value

The specified value will be used
out_opts_file

(char)

out_opts_file is the name of the output options file.

inv_opts_file

(char)

inv_opts_file is the name of the inversion options file.

ref_conductivity

(char)

ref_conductivity is the name of the reference conductivity file, which is in the same format as a standard conductivity file.

*Specify none if not using a reference model to constrain the inversion.

Example 


ERT3	            run mode
two_blocks.1.node 	mesh node file name
two_blocks.srv	    survey file name
'average'	        Use calculated average apparent resistivity as starting conductivity
two_blocks.out	    output options file name
two_blocks_1.inv	inversion options file name
none	            reference conductivity file name
Variable Name Description
run_mode

char

run_mode specifies the mode that E4D should execute.

run_mode=SIP3

Complex resistivity survey for a single survey

run_mode=SIPTank3

Complex electrical resistivity inversion for a single survey with a tank boundary
mesh_file

(char)

mesh_file should be set to <e4d_mesh>.1.node, or <e4d_mesh>.1.ele, where <e4d_mesh> is the prefix of the mesh files created during mesh generation.

survey_file

(char)

survey_file is the name of the user-created survey file.

starting_conductivity

(char)

starting_conductivity is the name of a conductivity file to be used as the starting model.

starting_conductivity=name of SIP conductivity file

Specified SIP conductivity file will be used

real_conductivity=real value imaginary_conductivity=real value

The specified values will be used
out_opts_file

(char)

out_opts_file is the name of the output options file.

inv_opts_file_ert  inv_opts_file_sip

(char)                    (char)

inv_opts_file_ert is the name of the ERT inversion options file

inv_opts_file_sip is the name of the SIP inversion options file

ref_conductivity

(char)

ref_conductivity is the name of the reference conductivity file, which is in the same format as a standard conductivity file.

*Specify none if not using a reference model to constrain the inversion

Example 


SIP3	                                  run mode
two_blocks.1.node 	                      mesh node file name
two_blocks.srv	                          survey file name
'average'	                              Use calculated avg apparent resistivity as starting conductivity
two_blocks.out	                          output options file name
two_blocks_1.inv two_blocksSIP_1.inv 	  ERT inversion options file  SIP inversion options file
none	                                  reference conductivity file name
Variable Name Description
run_mode

char

run_mode specifies the mode that E4D should execute.

run_mode=ERT4

Electrical resistivity inversion for a list of survey files

run_mode=ERTTank4

Complex resistivity survey for a list of survey files
mesh_file

(char)

mesh_file should be set to <e4d_mesh>.1.node, or <e4d_mesh>.1.ele, where <e4d_mesh> is the prefix of the mesh files created during mesh generation.

survey_file

(char)

survey_file is the name of the user-created survey file.

starting_conductivity

(char)

starting_conductivity is the name of a conductivity file to be used as the starting model.

starting_conductivity=name of starting model conductivity file

Specified conductivity file will be used

starting_conductivity='average'

The calculated average apparent resistivity will be used

starting_conductivity=real value

The specified value will be used
out_opts_file

(char)

out_opts_file is the name of the output options file.

inv_opts_file

(char)

inv_opts_file is the name of the inversion options file.

ref_conductivity

(char)

ref_conductivity is the name of the reference conductivity file, which is in the same format as a standard conductivity file.

*Specify none if not using a reference model to constrain the inversion
time_lapse_list_file baseline_mode

(char)                   (int)

time_lapse_survey_file is the name of the time lapse list file name

baseline_mode is a flag for defining which baseline solution to use.

baseline_mode=1

use baseline solution

baseline_mode=2

use previous solution

Example 


ERT4	             run mode
two_blocks.1.node	 mesh node file name
two_blocks.srv	     survey file name
starting_model.sig	 starting conductivity file name
two_blocks.out	     output options file name
two_blocks_tl.inv	 inversion options file name
starting_model.sig	 reference conductivity file name
tl_files.txt 2	     time lapse file name list, 1 - use baseline solution, 2 - use previous solution