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Add admonition to clarify the sign of the gz in gravity inversion #56

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Add admonition to clarify the sign of the gz in gravity inversion #56

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17 changes: 17 additions & 0 deletions notebooks/03-gravity/inv_gravity_anomaly_3d.ipynb
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Expand Up @@ -383,6 +383,23 @@
"The SimPEG [Data](xref:simpeg#simpeg.data.Data) class is required for inversion and connects the observed data, uncertainties and survey geometry."
]
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"source": [
":::{important}\n",
"SimPEG uses a right-handed xyz coordinate system in which the z axis points _upward_. When defining the `Data` object for a gravity inversion we must check that the `dobs` array contains the **upward** component of the gravity acceleration due to anomalous bodies.\n",
":::"
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