Earthquake velocity determination method and device

The embodiment of the invention provides a seismic velocity determination method and device, and the method comprises the steps: determining a first weighting function according to a first singular value and a second singular value in seismic data; determining a second weighting function according to the position of a seismic wavelet in a time window in the seismic data; determining a target correlation coefficient and a corresponding velocity spectrum according to the first weighting function, the second weighting function and a preset correlation coefficient, and performing velocity analysis on the seismic data according to the velocity spectrum to obtain corresponding velocity field data; according to the method, the influence of noise on velocity analysis can be effectively overcome, and the anti-noise capability of seismic data during velocity analysis is improved. 本申请实施例提供一种地震速度确定方法及装置，方法包括：根据地震资料中的第一奇异值和第二奇异值，确定第一加权函数；根据所述地震资料中的时窗内部地震子波位置，确定第二加权函数；根据所述第一加权函数、所述第二加权函数以及预设相关系数，确定目标相关系数以及对应的速度谱，并根据所述速度谱对所