TY  - JOUR
A1  - Mielke, Christian
A1  - Rogass, Christian
A1  - Bösche, Nina Kristine
A1  - Segl, Karl
A1  - Altenberger, Uwe
T1  - EnGeoMAP 2.0-Automated Hyperspectral Mineral Identification for the German EnMAP Space Mission
JF  - Remote sensing
N2  - Algorithms for a rapid analysis of hyperspectral data are becoming more and more important with planned next generation spaceborne hyperspectral missions such as the Environmental Mapping and Analysis Program (EnMAP) and the Japanese Hyperspectral Imager Suite (HISUI), together with an ever growing pool of hyperspectral airborne data. The here presented EnGeoMAP 2.0 algorithm is an automated system for material characterization from imaging spectroscopy data, which builds on the theoretical framework of the Tetracorder and MICA (Material Identification and Characterization Algorithm) of the United States Geological Survey and of EnGeoMAP 1.0 from 2013. EnGeoMAP 2.0 includes automated absorption feature extraction, spatio-spectral gradient calculation and mineral anomaly detection. The usage of EnGeoMAP 2.0 is demonstrated at the mineral deposit sites of Rodalquilar (SE-Spain) and Haib River (S-Namibia) using HyMAP and simulated EnMAP data. Results from Hyperion data are presented as supplementary information.
KW  - EnMAP
KW  - Hyperion
KW  - EnGeoMAP 2
KW  - 0
KW  - mineral mapping
KW  - imaging spectroscopy
Y1  - 2016
U6  - https://doi.org/10.3390/rs8020127
SN  - 2072-4292
VL  - 8
SP  - 392
EP  - 414
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Mielke, Christian
A1  - Muedi, T.
A1  - Papenfuss, Anne
A1  - Bösche, Nina Kristine
A1  - Rogass, C.
A1  - Gauert, C. D. K.
A1  - Altenberger, Uwe
A1  - de Wit, M. J.
T1  - Multi- and hyperspectral spaceborne remote sensing of the Aggeneys base metal sulphide mineral deposit sites in the Lower Orange River region, South Africa
JF  - South African Journal of Geology
N2  - New tools and algorithms for geological femote Sensing are developed and verified at test sites throughout the world in preparation of the German hyperspectral satellite Mission (EnMAP), which is an Environmental Mapping and Analysis Program. The aggeneys Cu-Pb-Zn deposit, situated in the arid north western part of South Africa, represents a unique field laboratory for testing these new tools. Here spaceborne hyperspectral data covering the Swartberg, and hyperspectral spaceborne data can be demonkrated, such as the Iron Feature Depth index (IFD), which has recently been proposed for mine waste mapping in the North West Province of South Africa and for gossan detection at Haib River in South Namibia. The work presented here explores the potential of the IFD for gossan mapping and characterization at Gamsberg and Big Syncline, from EO-1 ALI and Landsat-8 OLI data together with mineral maps from expert systems such as the United States Geological Survey (USGS) Material Identification and Characterization Algorithm (MICA), and first results from EnMAPs EnGeoMAP algorithm. Field spectroscopic measurements and field sampling were carried out to validate and calibrate the results from the expert systems and the IFD. This ground truthing is a necessary complementary step to link the results from the expert systems and the IFD to in-situ field spectroscopy. Future mineral exploration initiatives may benefit from the techniques described here, because they can significantly narrow the expensive, exploration activities such as hyperspectral airborne data, field activities and drilling, by identifying the most promising mineral anomalies in an area from the spaceborne data.
Y1  - 2016
U6  - https://doi.org/10.2113/gssajg.119.1.63
SN  - 1012-0750
SN  - 1996-8590
VL  - 119
SP  - 63
EP  - 76
PB  - Geological Society of South Africa
CY  - Marshalltown
ER  - 
TY  - GEN
A1  - Hoehnel, Desirée
A1  - Tagle, Roald
A1  - Hofmann, Axel
A1  - Reimold, W. U.
A1  - Mohr-Westheide, Tanja
A1  - Fritz, Joerg
A1  - Altenberger, Uwe
T1  - MICRO-XRF ANALYSIS OF ARCHEAN SPHERULE LAYERS AND HOST ROCKS FROM THE CT3 DRILL CORE, BARBERTON GREENSTONE BELT, SOUTH AFRICA
T2  - Monthly notices of the Royal Astronomical Society
Y1  - 2016
SN  - 1086-9379
SN  - 1945-5100
VL  - 51
SP  - A334
EP  - A334
PB  - Wiley-Blackwell
CY  - Hoboken
ER  - 
TY  - GEN
A1  - Hoehnel, Desiree
A1  - Reimold, W. U.
A1  - Mohr-Westheide, Tanja
A1  - Hofmann, Axel
A1  - Altenberger, Uwe
T1  - PETROGRAPHY OF ARCHEAN SPHERULE LAYERS FROM THE CT3 DRILL CORE, BARBERTON GREENSTONE BELT, SOUTH AFRICA
T2  - Scientific reports
Y1  - 2016
SN  - 1086-9379
SN  - 1945-5100
VL  - 51
SP  - A333
EP  - A333
PB  - Wiley-Blackwell
CY  - Hoboken
ER  - 
TY  - GEN
A1  - Alsemgeest, Jitse
A1  - Schröder, S.
A1  - Boettger, Ute
A1  - Pavlov, S. G.
A1  - Weber, I.
A1  - Greshake, A.
A1  - Knöfler, H. -R.
A1  - Altenberger, Uwe
A1  - Hübers, H. -W.
T1  - COMBINED RAMAN-LIBS STUDIES ON IRON SULFIDES TO INVESTIGATE THE EFECTS OF THE LIBS PLASMA ON THE MINERAL COMPOSITION.
T2  - Monthly notices of the Royal Astronomical Society
Y1  - 2016
SN  - 1086-9379
SN  - 1945-5100
VL  - 51
SP  - A147
EP  - A147
PB  - Wiley-Blackwell
CY  - Hoboken
ER  -