STABILISATION OF THE TIDAL ENTRANCE AT HORNAFJORDUR, ICELAND

Gisli Viggosson, Sigurdur Sigurdarson, Bjorn Kristjansson

Abstract


Hornafjordur is a tidal entrance on the south-east coast of Iceland, a shore with a heavy littoral drift. An extreme storm hit the coast in January 1990. It caused large shoaling to encroach upon the entrance channel from both sides, and a breakthrough occurred between the rock headland Hvanney and the South Barrier. The inlet was closed for several weeks. A rubble mound shore protection was built on its west side in 1991 to restore the South Barrier. A curved breakwater of berm type was constructed during the summer 1995. Due to severe wave action and strong current a berm structure with toe protection was chosen. The paper presents the experiences gained on the tidal inlet based on hydrodynamic and hydraulic models, both calibrated to the field data.

Keywords


tidal entrance; Hornafjordur; Iceland; channel stabalization

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