SeisMIC\u2011Init: A Multi\u2011Constraint Geophysical Dataset for Initial Velocity Model Building

SeisMIC-Init, a large-scale synthetic dataset tailored for initial velocity model construction. Each sample delivers multi-modal inputs---RMS velocity, a post-stack migrated image, horizon annotations, and sparse well-log velocity stripes---and a depth-domain target interval velocity. The dataset comprises 120,000 models spanning four structural subsets: FlatVel-A\/B, CurveVel-A\/B.