Statics The SeisUP STATIC module computes and applies elevation (datum) statics, floating datum statics, inputs and applies refraction and other surface consistent and non-surface consistent statics. Interactive Refraction Statics SeisUP's Interactive Refraction Statics generates shot and geophone statics from a near surface depth model. The user interactively selects refractor offset ranges and deletes bad picks. First break time picks and refractor offsets are analyzed for refractor velocities. Refractor velocities are smoothed and combined with first break times and geometry data to compute an iterative time term solution for up to 5 layers. The time term solutions are inverted using the refractor velocities to generate the refractor depth model. The first refractor elevation or first layer thickness may be smoothed to update v0. Statics for a shot or geophone are found by replacing the time from surface to bottom of model with a time based upon a user specified replacement velocity. Shot map displays include shot position, surface elevation, sequential/field shot point number, shot depth, uphole time, offset selection coverage, refractor velocity, delay times, refractor depth and statics. Geophone map displays include elevation, delay times, refractor depths, and statics. The user may select an arbitrary traverse on the map and display the values in a vertical cross section. Pointer motion on cross section values moves a location indicator on the map. RESID The RESID series of modules computes correlation auto-statics. In RESID traces from the center CMP of a local collection of CMP's are correlated against pseudo-randomly selected traces from the collection. The correlation picks are used to solve a linear system of equations by conjugate-gradient for the MPAS Another method for auto-static computation in SeisUP is maximum stack power. This procedure correlates traces from the center CMP against the stack of all the traces from a local collection of CMP's. The correlation is accumulated to the traces shot correlation and also to the traces geophone correlation. The shot and geophone statics computed from the correlation picks are applied to the traces to start the next iteration. PILOT A third auto-statics computation technique in SeisUP is the PILOT series of modules. Traces from the center CMP of a local collection of CMP's are correlated against a pilot trace model. Pilot model may be externally generated or internally computed. The correlations are picked. Optionally for the internally generated pilot the shifts are applied to the traces in the collection to form an improved pilot (stack). The final picks are used to solve a linear system of equations for shot statics, geophone statics, residual normal moveout and structure terms. TRIMCMP The TRIMCMP module computes and applies time variant trim statics. These statics are useful for removing residual NMO errors within CMP gathers prior to AVO analysis.