Whelley, P.L., Richardson, J.A., and Gallant, L., 2022, NASA GIFT Iceland Highlands: 2019 Oskjuvatn LiDAR: U.S. Geological Survey data release, https://doi.org/10.5066/P9HJCG7K.
Summary
LiDAR scans were taken using a tripod mounted Riegl VZ-400 scanning LiDAR. The tripod was set up such that the scanner was between 1.5 and 2.5 m tall. The VZ-400 is a near infrared (1550 nm) scanner. Geometric control was achieved using a pair of Trimble RB GPS antennae, one mounted on the LiDAR scanner (rover) and the other setup as a base station. Before taking a LiDAR scan, the VZ-400 would use the GPS to fix a real time kinematic (RTK) solution for the scanner’s location and then use that position (scan position) as a reference for LiDAR returns. Post processing was done using RIScan-Pro version 2 (scanner specific software). Also, in post-processing, overlapping areas of point clouds were merged and inaccuracies in roll, pitch [...]
Summary
LiDAR scans were taken using a tripod mounted Riegl VZ-400 scanning LiDAR. The tripod was set up such that the scanner was between 1.5 and 2.5 m tall. The VZ-400 is a near infrared (1550 nm) scanner. Geometric control was achieved using a pair of Trimble RB GPS antennae, one mounted on the LiDAR scanner (rover) and the other setup as a base station. Before taking a LiDAR scan, the VZ-400 would use the GPS to fix a real time kinematic (RTK) solution for the scanner’s location and then use that position (scan position) as a reference for LiDAR returns. Post processing was done using RIScan-Pro version 2 (scanner specific software). Also, in post-processing, overlapping areas of point clouds were merged and inaccuracies in roll, pitch and yaw, were resolved using a multi station adjustment routine. The data were projected in UTM coordinates for export. Once post-processed, data were exported in “.las” format with LiDAR reflectance (infrared) saved as intensity. The point cloud is georeferenced and projected in UTM Zone 28 North and generally has < 1 cm point spacing, however spacing varies locally and depending on the distance from the scanner to the target.
Click on title to download individual files attached to this item.
Metadata_GIFT_Iceland_2019_LiDAR_Oskjuvatn.xml Original FGDC Metadata
View
8.69 KB
application/fgdc+xml
11.13 GB
application/octet-stream
Purpose
Data were collected to characterize the intra-caldera deposits from the 1875 eruption of Askja Caldera, on the banks of Oskjuvatn that were exposed in a 2014 tsunami.
