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doi:10.3850/978-981-08-7920-4_S1-R10-cd
LIDAR Study of the 2010 Maule Chile Earthquake
Michael J. Olsen1, Sara Piaskowy2, Solomon Yim1, Luis Burgos3 and Shawn Butcher1
1School of Civil and Construction Engineering, Oregon State University, Corvallis, OR, USA.
2Department of Geography and Environmental Engineering, Johns Hopkins University, Baltimore, MD, USA.
3Department of Coastal Engineering, Federico Santa Maria Technical University, Casa Central, Valpariaso, Chile.
ABSTRACT
The M8.8 Maule Chile earthquake and subsequent tsunami resulted in significant damage to
infrastructure along the Chilean coast. In a recent field reconnaissance effort, we collected a
substantial amount of ground-based LIDAR (Light Detection and Ranging) data at various sites
to capture effects of the earthquake and tsunami such as ground rupture, liquefaction and lateral
spreading, structural damage, and scouring. This data provides post-disaster survey data at
unprecedented resolutions (cm-level) and accuracies (mm to cm-level), allowing for fine details
to be observed and precisely measured. This paper evaluates the importance of LIDAR for
both structural and geotechnical analysis in a post-earthquake and tsunami framework. These
LIDAR datasets are essentially virtual worlds that allow scientists to study and explore the
site without being physically present. Because field visits are often short and rushed in nature,
important observations can be easily missed. However, detailed imagery and critical geometric
information are preserved digitally in the LIDAR data. These scans are useful to measure postearthquake
conditions, such as the nature, location, frequency and extent of damage,magnitude
of residual deflections, and areas of highly localized damage.
Keywords: LIDAR, 3D laser scanning, Earthquake, Liquefaction, Chile, Reconnaissance.
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