Oceanography

Oceanography calculators for wave height, tidal range, ocean currents, seawater density, tsunami travel time, and sea level rise.

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Calculate average depth, seafloor slope, and gradient from start/end depths and horizontal distance.

Assess coral bleaching risk using Degree Heating Weeks (DHW) based on sea surface temperature anomalies and duration above threshold.

Calculate the speed of sound in seawater from temperature, salinity, and depth using the Mackenzie equation.

Calculate geostrophic current velocity from pressure gradient, latitude, and water density using Coriolis-adjusted equations.

Estimate coastal inundation area and shoreline retreat from sea level rise based on coastline length, slope, and rise amount.

Calculate seawater density from temperature, salinity, and pressure using a simplified UNESCO equation of state.

Predict spring and neap tidal ranges from mean tidal range, lunar phase, and solar declination factor.

Calculate tsunami propagation speed and arrival time from ocean depth and distance using shallow water wave theory (v = √(g·d)).

Calculate coastal upwelling index from wind stress, latitude, and water density using Ekman transport theory.

Calculate significant wave height, period, and wavelength from wind speed, fetch distance, and duration using the SMB method.