Tidal Analysis

This is an essential component of studies of coastal flow patterns, surge tides and astronomical tides. Signals (usually elevation or current meter data) are analysed to give harmonic components and predictions (in the case of current meter data this may take the form of tidal ellipses).

Non tidal signals can then be separated from the raw data. For elevation data these may take the form of surge elevations or river inputs. Lag analysis can be performed to serparate phase and elevation effects. For current meter data, residual flows can arise from a variety of sources, e.g. density flows, coastal flows, topographically driven flow, wind driven flow, etc.

Work undertaken includes:

• Tidal analysis of elevation or current data
• Tidal prediction
• Calculation of residuals
• 3d models