NASA GIFT Iceland Highlands: 2019 Oskjuvatn LiDAR
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.
Complete Metadata
| accessLevel | public |
|---|---|
| bureauCode |
[
"010:12"
]
|
| contactPoint |
{
"fn": "Patrick Whelley",
"@type": "vcard:Contact",
"hasEmail": "mailto:patrick.l.whelley@nasa.gov"
}
|
| 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. |
| distribution |
[
{
"@type": "dcat:Distribution",
"title": "Digital Data",
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"accessURL": "https://doi.org/10.5066/P9HJCG7K",
"mediaType": "application/http",
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"@type": "dcat:Distribution",
"title": "Original Metadata",
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"downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.61eb49afd34e8b818ada91b6.xml"
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|
| identifier | http://datainventory.doi.gov/id/dataset/USGS_61eb49afd34e8b818ada91b6 |
| keyword |
[
"Askja",
"Iceland",
"USGS:61eb49afd34e8b818ada91b6",
"Volcanic ash",
"caldera",
"geoscientificInformation",
"intra-caldera",
"pumice",
"surge-beds",
"tsunamis",
"volcanology"
]
|
| modified | 2022-02-01T00:00:00Z |
| publisher |
{
"name": "U.S. Geological Survey",
"@type": "org:Organization"
}
|
| spatial | -16.71, 65.01, -16.68, 65.03 |
| theme |
[
"Geospatial"
]
|
| title | NASA GIFT Iceland Highlands: 2019 Oskjuvatn LiDAR |
