SHORELINE AND LAND USE CHANGES ON COAST BETWEEN POINTS KUNOSAKI AND IZURA SOUTH OF HIRAKATA FISHING PORT

Abstract

  Shoreline and land use changes on a pocket beach south of Hirakata fishing port in Ibaraki Prefecture were investigated. On this beach, excess land reclamation was carried out to widen the land for parking lot as well as the construction of groins. Such construction triggered beach erosion because of the change in wave field. Beach changes between 1986 and 2009 were investigated using aerial photographs. Site photographs in 2001 before the construction of coastal structures and in 2011 after the construction clearly show the beach changes. Finally natural sandy beach of this coast was totally lost.