Sampling Strategies

The most commonly used sampling strategy was the use of LIDAR. Light Detection and Ranging, or LIDAR, is a remote sensing method that uses light in the form of a pulsed laser to measure ranges to the Earth.

The excavation team took daily helicopter flights for almost two weeks over a 370-square-kilometer area around the temple. The LIDAR device fired a million laser beams every four seconds through the jungle canopy, recording minute variations in ground surface topography. With the findings, researchers could d draw a picture of city blocks, residential areas, dried-out pounds, and other archaeological remains.

Tree ring samples were also taken to record sudden fluctuations between extreme dry and wet conditions- and they were also used to reveal catastrophic flood damage to the city’s vital water network.



The top of this photo is an areal view of Angkor Wat and the surrounding vegetation. The picture below is the view after using LIDAR to remove the excess vegetation


This shows the LIDAR scans going across the ground around Angkor Wat