Then, a swimmer with a level rod is dropped into the water from a jet ski. First, a 20m spaced grid is pegged out on the beach to guide the survey crew along the transects. Levelling measurements are used to obtain surf zone bathymetry data to map the movement of sand, particularly before and after large tropical storms that have a potentially enormous impact on sand distribution. One survey method used by the Gold Coast council hydrographic section has changed little over this time. The council's extensive monitoring of beaches and of coastal patterns and the data gathered over many years provide valuable information about coastal processes and their impact on the coastline the oldest Gold Coast measurement transect has been continuously surveyed for the past 60 years. In order to maintain the economic engine behind the growth of the Gold Coast region, management activities include dredging, sand bypassing, sand nourishment and the construction of protection structures. With a survey-grade CEESCOPE singlebeam echosounder, RTK GNSS, on-board computer for data collection and HYPACK software, the CEE JET allows collection of high-quality bathymetry data in the often substantial area of the surf zone.Īustralia's Gold Coast stretches along 57 kilometres (35 miles) of coastline and the region is home to over half a million people. After learning about the prospect of using a jet ski with a singlebeam echosounder to conduct bathymetric surveys in a fraction of the time, the Gold Coast council in Australia purchased its first CEE JET hydrographic survey system from CEE HydroSystems.
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