2010 Lidar: Fairbanks North Star Borough, Alaska

The NOAA Office for Coastal Management (OCM) downloaded this lidar data from the USGS site: ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/AK_Fairbanks-NSBorough_2010/ and processed the data to be available on the Digital Coast Data Access Viewer (DAV). NOAA Office for Coastal Management processed all classifications of points to the Digital Coast Data Access Viewer (DAV). Classes available on the DAV are: 1 - Unclassified, 2 - Ground, 12 - Overlap (Unclassified).

This lidar data set is for the Fairbanks North Star Borough Area and the USACE Cold Regions Research and Engineering Laboratory (CREEL) Permafrost Tunnel Research Facility in Fox, Alaska.

The following are the collection parameters and equipment used to create these data sets:

Aircraft: Cessna 320 (43Q)

lidar System: Optech ALTM Gemini (03SEN145)

Approximate Collection Altitude (Above Mean Terrain): 1400 meters

Ground Speed: 150 kts

lidar Pulse Rate Frequency: 70 kHz

Mirror Scan Frequency: 48 Hz

Scan Angle (+/-): 12 degrees

Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas.

Classified data sets such as this one may have varying posting due to some pulses not reaching the ground.

The purpose of this data set is to provide a source for current and accurate digital elevation models (DEM) with vertical accuracy of 0.50 foot or better and with a nominal point spacing of 0.81 meters. This data is not recommended for design grade mapping or engineering without a ground truth survey.

Aero-Metric, Inc. assumes no liability for the data being used for purposes other than stated in this document.

Any conclusions drawn from the analysis of this information are not the responsibility of Aero-Metric, Inc, USGS, NOAA, the Office for Coastal Management or its partners.

Data is available online for custom and bulk downloads.

None

Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 4; lidarTools 1.0.9

All these data products were acquired at 1400 meters above mean terrain (AMT) and have a horizontal accuracy of 0.40 meters, with a nominal point spacing of 0.81 meters as per manufacturer's specifications, not field verified.

This value was computed by verifying the lidar data against ground surveyed points provided by DOWL/HKM. We recommend a ground truth survey of the data set. Without the ground truth survey check this data is not recommended for design grade mapping or engineering.

4 cm RMSE

This value was computed by verifying the lidar data against ground surveyed points in open terrain. Vegetated and/or sloped terrain may yield diminished accuracies.

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