INTERTIDAL MORPHOLOGY AND WAVE RUN-UP OBSERVATIONS DURING A STORM EVENT WITH X-BAND NAUTICAL RADAR

摘要

A X-band nautical radar system has been employed to observe sea surface patterns of shallow coastal waters during a storm event. Wave gauges and current meters are employed in a conventional field test; however, the deployment of the instruments is limited, especially in the surf zone. In this context, a radar system is introduced here, which can remotely and broadly infer the sea surface state even during a severe sea conditions. The radar system was operated at the research pier HORS and radar echo images were collected during a passage of a storm in the vicinity of the pier. Analyses on radar echo images were done and the results demonstrate the potential of the system in observation of sea states, especially for discussion on morphological features and wave runup motions. Analyses on radar echo images were done and (I) longshore distribution of mean shoreline positions and intertidal foreshore slopes, and (ii) temporal and spatial variation of wave run-up, are discussed.