A computer-implemented method of seismic exploration above a region of subsurface containing structural or stratigraphic features conducive to determining a presence, migration, or accumulation of hydrocarbons, the method comprising: Accessing at least a portion of a seismic source survey recorded using one or more seismic receivers, wherein the seismic source survey corresponds to a seismic source excitation, wherein the seismic source excitation is produced by a seismic source , and wherein the at least a portion of a seismic source survey comprises data corresponding to at least one time before a time of the seismic source excitation; separating a coherent signal from the at least a portion of a seismic source survey via a combing and deblending operation, wherein the combing and deblending operation is an iterative operation configured to predict at least a portion of weak-coherence signals caused by the seismic source excitation, and wherein the combing and deblending operation is based at least in part on a gather comprising the at least the portion of the seismic source survey corresponding to the at least one time before the time of the seismic source excitation; recovering at least a portion of leaked or misallocated signals via an attenuation of noise at least in part by allocating the noise to a time before the time of the seismic source excitation, wherein the leaked or misallocated signals are caused by a separation of primary signals ; and producing a receiver gather based on the separating and the coherent signal , wherein the receiver gather is a recording of multiple source excitations on a receiver, and wherein the receiver gather is used in exploration for hydrocarbons within the region of the subsurface. Accessing at least a portion of a seismic source survey recorded using one or more seismic receivers, wherein the seismic source survey corresponds to a seismic source excitation, wherein the seismic source excitation is produced by a seismic source , and wherein the at least a portion of a seismic source survey comprises data corresponding to at least one time before a time of the seismic source excitation; separating a coherent signal from the at least a portion of a seismic source survey via a combing and deblending operation, wherein the combing and deblending operation is an iterative operation configured to predict at least a portion of weak-coherence signals caused by the seismic source excitation, and wherein the combing and deblending operation is based at least in part on a gather comprising the at least the portion of the seismic source survey corresponding to the at least one time before the time of the seismic source excitation; recovering at least a portion of leaked or misallocated signals via an attenuation of noise at least in part by allocating the noise to a time before the time of the seismic source excitation, wherein the leaked or misallocated signals are caused by a separation of primary signals ; and producing a receiver gather based on the separating and the coherent signal , wherein the receiver gather is a recording of multiple source excitations on a receiver, and wherein the receiver gather is used in exploration for hydrocarbons within the region of the subsurface. <EOS>