where the describes the sum of the squares of the values (i.e., the energy), is the collection of all recorded surface seismic shot records in the domain, and describes the modeled surface shot records as a function of reflectivity and velocity . Note that by using the reflectivity and propagation velocity as parameters, density variations are implicitly included in . Even though JMI has a reduced non-linearity, the velocity update still suffers from local minima. With a proper constraint, JMI can lead to a more accurate inverted velocity, and therefore a better inverted reflectivity.

jmi_scheme
JMI flow chart.
Figure 1. |
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2020-12-07