Abstract
Webcams have become popular means of showcasing beach conditions for a wide variety of beach users. However, webcams can also be a useful tool in assessing changes in coastal morphology and coastal processes. This information can be used by managers to assist in planning. A number of fixed-position beach webcams are freely available to the South African public via various tourism, surfing, weather and aviation websites, individual clubs and a cell-phone network provider. The advantages of these public networks are that the information is free and as the webcams are fixed, afford a consistent and comparable view of the beach. The disadvantage is that you are at the mercy of the provider: resolution is generally poor, downtime and communication are out of your control, and you have no influence over the positioning of the webcam or the discontinuity of service. Notwithstanding the above, the existing webcams can still provide valuable information. From the network of beach webcams available in South Africa we analyse imagery from three beach webcams located in the province of KwaZulu-Natal, at Umhlanga, Margate beach and lagoon, and Amanzimtoti beach and lagoon to examine the coastal dynamics. From these case studies we illustrate seasonal beach rotation and lagoon mouth dynamics, specifically why outlets migrate southwards in opposition to regional longshore drift.
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