OBSERVATION OF NEARSHORE CURRENTS AND BEACH CHANGES AROUND HEADLANDS BUILT ON THE KASHIMANADA COAST, JAPAN

K. Saito, T. Uda, K. Yokota, S. Ohara, Y. Kawanakajima, K. Uchida

Abstract


Nearshore currents and beach changes around headlands built on the Kashimanada coast facing the Pacific Ocean were investigated through the field observation. In order to confirm the effectiveness of headland system to stabilize sandy beach, nearshore current field and shoreline change around headlands were measured as well as the comparison of measured value with the results of numerical simulation of nearshore currents. Comparison of development of a rip current around a completed, anchor-type headland and a groin-type headland under construction was also made and superiority of anchor-type headland to suppress the development of a rip current in the vicinity of the structure was clarified.

Keywords


nearshore current; beach change; headland; Kashimanada Coast

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