High resolution airborne hyperspectral spectroscopy in Central East Greenland 2012 - Data acquisition and pre-processing

Leif Thorning, Nicolai Nørtoft Christensen, Símun D. Olsen, Peter Riisager, Lars Lund Sørensen, Erik Vest Sørensen, Tapani Tukiainen

Publikation: Bog/rapportRapport (offentligt tilgængelig)

Abstrakt

The purpose of this report is to document the acquisition and basic processing of data in the HyperEast 2012 project, covering two remote sensing (hyperspectral, LiDAR, photography) data sets from central East Greenland; the Carlsberg Fjord hyperspectral survey and the Kap Simpson hyperspectral survey.

Both surveys were flown in August 2012 by NERC ARSF0F in accordance with the survey design laid out by GEUS, using a Dornier aircraft fitted with instrumentation for hyperspectral airborne scanning, LiDAR laser scanning and digital photography. The aircraft and the ARSF team were in Iceland for another project and flew to Nerlerit Inaat (Constable Pynt) Airport on the East Coast of Greenland. This remote airfield served as the base for seven flights acquiring all the planned HyperEast 2012 data before returning to Iceland.

The Carlsberg Fjord Survey comprises 4426 line km of data covering approximately 2620 km2 (3,44 terabyte as delivered from ARSF); the Kap Simpson Survey comprises 1310 line km of data covering an area of approximately 664 km 2 (0,88 terabyte of data). Altogether seven flights were needed, see Appendix 1.
The first, basic processing of the data took place at the Plymouth office of ARSF. The data were then shipped to GEUS on external hard disk drives; the first delivery was a test file enabling GEUS to start up the tuning of processing software; the actual delivery of data processed to ARSF standards took began November 2012 and the last digital data file was delivered on April 2013.
The processing at GEUS encompassed the calculation of a new DEM based on the LiDAR data and resampling, georeferencing, and atmospheric corrections of hyperspectral data. Interpretation of data from special target areas for exploration companies was also started up soon after the delivery of the first data, but will not be described here.
With the conclusion of the processing described in this report, new GEUS data sets have been created, available for purchase and further use by interested parties according to standard GEUS conditions for use of GEUS’ digital data. Recommended form of references for data sets is (example):
“Multisensor airborne survey of the Carlsberg Fjord region, central East Greenland, flown August 2012: Processed hyperspectral data. GEUS data set id 1, version 1.0, 15 May 2013.”
See section 9 of this report for further details.
The version and date stamp may be changed if future (corrected or enlarged) versions of the data sets are released.
OriginalsprogEngelsk
UdgivelsesstedCopenhagen
ForlagGEUS
Antal sider111
Vol/bind2014
DOI
StatusUdgivet - 28 apr. 2014

Publikationsserier

NavnDanmarks og Grønlands Geologiske Undersøgelse Rapport
ForlagGEUS
Nr.7
Vol/bind2014

Emneord

  • Greenland

Programområde

  • Programområde 4: Mineralske råstoffer

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