A multiple strain-gage system was field tested as in situ submarine instrumentation for monitoring diurnal beach sediment migration in high-energy foreshore environments. The system has major quantitative limitations in measuring absolute sand heights, but does have potential utility as a qualitative instrument for the synoptic monitoring of tidal-induced erosional and accretionary trends. Relatively long-period trends exceeding one-quarter of a tidal cycle are effectively denoted by gage response pressure. However, gage response to shorter period sand-height variations is of more limited reliability because of extraneous pressures induced by the hydraulic regime.

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