Table 2 Summary of Narrabeen coastal monitoring program (source: ref. 53).

From: A multi-decade dataset of monthly beach profile surveys and inshore wave forcing at Narrabeen, Australia

Survey technique Survey period Survey frequency Spatial coverage
Historical profile line surveys (Emery method) April 1976—August 2006 Monthly Five representative profile lines (subaerial beach)
Historical profile line surveys (RTK-GPS) May 2005—present Monthly Five representative profile lines (subaerial beach)
Argus coastal imaging (Flight Deck Building) July 2004—present Hourly (daylight) Southern half of beach (shoreline mapping)
Argus coastal imaging (Nth Narrabeen/Narrabeen Lagoon) July 2005—August 2008 Hourly (daylight) Northernmost 500 m of beach/ Narrabeen Lagoon (shoreline mapping)
RTK-GPS mounted on an All-Terrain-Vehicle July 2005—present Monthly Entire 3.6 km long subaerial beach
Airborne Lidar surveys July 2011—present Pre/post major storm events Entire 3.6 km long subaerial beach and dunes
Permanent fixed Lidar (Flight Deck Building) May 2014 -present 5 Hz (continuous) One profile line
Unmanned Aerial Vehicle (UAV) Structure-from-Motion surveys June 2014—present Pre/post major storm events Entire 3.6 km long subaerial beach and dunes
Single/multi-beam hydrographic surveys using boat/jetski (courtesy of NSW Office of Environment and Heritage) April 2011—present Irregular Entire 3.6 km long beach in the surf zone and offshore