2024 Volume 80 Issue 17 Article ID: 24-17170
Localized coastal erosion is occurring around the crest type of artificial reef in the Kaike area of Kaike coast due to high waves caused by typhoons and winter storms. Although emergency beach nourishment measures have been implemented for beach conservation, the situation of resolving continuous maintenance nourishment has not been reached. In this study, we conducted field investigations, including wave and current observations, as well as fixed-point camera surveys, to estimate the mechanisms of topographic change around the artificial reef for preserving the sandy beach in the Kaike Area. The erosion that occurred during the high waves in late January 2024 was estimated to be caused by the rise in water level behind the artificial reef and the failure of the waves entering from the opening of the artificial reef to diminish. Instead, they reached the shore side of the artificial reef and caused erosion of the sandy beach at the opening of the artificial reef.
