NASA GIFT Iceland Highlands: 2019 Oskjuvatn LiDAR

Description

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.

Resources

Name Format Description Link
55 Landing page for access to the data https://doi.org/10.5066/P9HJCG7K
55 The metadata original format https://data.usgs.gov/datacatalog/metadata/USGS.61eb49afd34e8b818ada91b6.xml

Tags

  • volcanic-ash
  • caldera
  • tsunamis
  • iceland
  • volcanology
  • geoscientificinformation
  • intra-caldera
  • askja
  • usgs-61eb49afd34e8b818ada91b6
  • surge-beds
  • pumice

Topics

Categories