关键词:
boulder displacement
RFID tracing technology
extreme events
boulder beach morphology
摘要:
Extreme storm events in coastal zones play significant roles in shaping the morphology of boulder ***,boulder displacement and the geomorphological evolution of boulder beaches driven by different extreme storm events,especially typhoon events,remain poorly ***,boulder displacement and the geomorphic response on a boulder beach in Fujian,southeastern China,were explored before,during and after a cold wave event(Dec.1–7,2020)and before and after Typhoon In-Fa(Jul.19–27,2021),a large tropical *** was achieved by tracking 42 tagged boulders distributed in the intertidal and supratidal zones using Radio Frequency Identification(RFID)and topographic surveys using real-time kinematic techniques,*** results showed obvious disparities in boulder displacement in different geomorphic zones due to cold wave and typhoon events that were mainly characterized by migration magnitude,range,direction,and mode of *** typhoon event led to rapid and substantial changes in the overall morphology of the boulder beach,while the cold wave event impacted the intertidal morphology of the boulder beach to only a small *** surrounding structure of boulders,beach slope and beach elevation had a combined dominant effect on boulder displacement under the same extreme *** factors(effective wave energy fluxes,incident wave direction,storm surge and water level)had dominant effects on boulder displacement during different extreme *** terms of a single event,the magnitude of the boulder displacement driven by the typhoon was much greater than that driven by the cold ***,considering the frequency and duration of cold waves in winter,the impact of multiple consecutive cold waves on the geomorphology of the boulder beach cannot be ignored in this study *** and repeated interactions between these two processes constitute the complete geomorphic evolution of the boulder *** study contributes to i