Mapping Pyroclastic and Lava Flows from 1998 to 2005 at Arenal Volcano, Costa Rica, Using Waveform-Recording, Medium-Footprint Lidar

摘要

Arenal volcano is a small, active stratovolcano in Costa Rica. In 1998 and 2005, it was imaged using NASA's Laser Vegetation Imaging Sensor (LVIS), a waveform-recording airborne laser altimeter, at 15-25m horizontal resolution. By comparing georeferenced waveform data collected, we mapped lava and pyroclastic flows deposited from 1998 to 2005. Deposits of up to 45m in thickness were mapped. Volume, estimates of 2.19×10~7m~3 were found for the period 1998 to 2005. Results are in general agreement with estimates obtained using Interferometric Synthetic Aperture Radar (InSAR) for 1997-2004 (Wadge et al., 2006).