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Simulation and Parameter Estimation in Geophysics - A python package for simulation and gradient based parameter estimation in the context of geophysical applications.

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#### Summary This PR is a proposal for adding Depth Of Investigation code based on the implementation described in Vest Christiansen, A., & Auken, E. (2012). A global measure for...

This issue is a follow up of #1361. In that PR we noticed that the SIP simulation doesn't behave very well when calling the `getJ` method without passing `actinds` as...

bug

### Issue with current documentation: There are several directives which are used for joint inversion. These are `ScalingMultipleDataMisfits_ByEig`, `JointScalingSchedule` and `MultiTargetMisfits`. The qualitative description of these directives, including the underlying...

documentation

### Proposed new feature or change: ### ## The issue: ## For time domain EM simulations, currently the off-time `t0` is defined in two places: In `BaseWaveform` and `BaseTimeSimulation`. `BaseTimeSimulation`...

### Proposed new feature or change: During the forward modeling test of 3DNSEM data, I found that the impedance data for the xx and yy components are extremely small (approximately...

bug

### Describe the issue: Calling a simulation without setting the solver raises a warning, stating ``` simpeg/base/pde_simulation.py#line=489: DefaultSolverWarning: Using the default solver: Mumps. If you would like to suppress this...

bug

#### Summary Move physical properties to base classes meant for inheritance. #### PR Checklist * [x] If this is a work in progress PR, set as a Draft PR *...

#### Summary Implements a parametrized interface to `PhysicalProperties` #### PR Checklist * [x] If this is a work in progress PR, set as a Draft PR * [x] Linted my...

#### Summary Update the iteration write out order. #### PR Checklist * [ ] If this is a work in progress PR, set as a Draft PR * [ ]...

#### Summary Fix how the mapping is being used in `Smallness` regularization: regularize on `mapping(m) - mapping(m_ref)` instead of `mapping(m - m_ref)`. Update the documentation of `Smallness` to include details...