Historic Environment Division Lidar 2009

The Historic Environment Division (HED) acquired LIDAR over a six year period from 2008 to 2014 to assist with the interpretation and protection of archaeological landscapes in Northern Ireland.

A total area of approximately 130km2 was surveyed during this period across 39 sites. The data is provided “as is” under an Open Government Licence and is not supported.

LIDAR Airborne LIDAR (Light Detection and Ranging), also known as Airborne Laser Scanning (ALS) is a landscape survey technique that uses a laser beam transmitted in rapid pulses from an aircraft in order to accurately measure the distance between the aircraft and the ground. The laser pulses allow measurements to be taken in the order of 100,000 times per second with a vertical accuracy of 0.5cm which produces a dense cloud of points which can then be interpolated to produce an accurate three dimensional model of the landscape below.

In this instance surveys are supplied as either digital surface model (DSM) or as a digital terrain model (DTM).

For the DTM, buildings and vegetation have been removed and only ground returns have used to produce the model.

The technique can be particularly valuable for archaeological survey as it allows large areas to be surveyed accurately enough for the subtle topographic traces of archaeological features to be identified.

The data below was collected in 2009, the attached PDF coverage map shows the areas surveyed in that year.

Data and Resources

Historic Division Lidar Coverage MapPDF
Coverage map of Lidar surveyed between 2008 – 2014
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Historic Division Lidar - Notes on the DatasetPDF
Additional information on the Lidar data including the ASCII data formatting
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Clogher LidarZIP
0.125m resolution DSM & DTM data from 2009 Lidar survey in ASCII format
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Devenish LidarZIP
0.125m resolution DSM & DTM data from 2009 Lidar survey in ASCII format
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Dunluce LidarZIP
0.125m resolution DSM & DTM data from 2009 Lidar survey in ASCII format
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Linford LidarZIP
0.125m resolution DSM & DTM data from 2009 Lidar survey in ASCII format
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The Dorsey LidarZIP
0.125m resolution DSM & DTM data from 2009 Lidar survey in ASCII format
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معلومات إضافية

Field	Value
Creation Date	October 26, 2016, 08:05 (UTC)
Topic Category	Environment Geoscientific Information Imagery / Base Maps / Earth Cover Location
Lineage	Surveys were conducted by BKS Fugro on behalf of HED in 2008, 2009, 2012, 2013 & 2014 (see coverage map and specific dataset entry for further info).
Frequency of Update	Not Planned
Contact Name	Rhonda Robinson
Contact Email	historicenvironmentenquiries@communities-ni.gov.uk
Additional Information	See survey overview map for individual tile references
Visibility	False
Source last updated
Time period
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