Methods and systems for determining attenuated traveltime using parallel processing

A system comprising:

• a seismic acquisition system configured to acquire seismic data comprising an amplitude and a phase of seismic waves traveling from a seismic source location to each of a plurality of seismic receiver locations;
• and
• a seismic processing system comprising a computer processor, wherein the seismic processing system is configured to:
• receive the seismic data based on a seismic survey of a geological region of interest,
• receive a velocity model comprising a velocity at each of a plurality of grid nodes, wherein the plurality of grid nodes represents the geological region of interest,
• receive an attenuation model comprising an attenuation factor at each of the plurality of grid nodes,
• determine a traveltime model using the seismic source location, the velocity model, and a traveltime Eikonal function, wherein the traveltime model comprises a traveltime at each of the plurality of grid nodes,
• determine an attenuated traveltime model using a parallel fast sweeping method,
• wherein the attenuated traveltime model comprises an attenuated traveltime at each of the plurality of grid nodes;
• wherein the parallel fast sweeping method comprises Cuthill-McKee ordering the plurality of grid nodes into a plurality of levels for each of a plurality of sweeps;
• wherein the parallel fast sweeping method further comprises using the seismic source location, the velocity model, the attenuation model, the traveltime model, and an attenuated traveltime Eikonal function;
• and
• wherein the attenuated traveltime at each of the plurality of grid nodes within each of the plurality of levels are determined in parallel, and
• generate an updated attenuation model regarding the geological region of interest using the attenuated traveltime model, the amplitude, and the phase.