The short wave infrared (SWIR) spectral characteristics of alteration minerals and applications for ore exploration in the typical skarn-porphyry deposits, Edong ore district, eastern China

2019 ◽  
Vol 35 (12) ◽  
pp. 3629-3643 ◽  
Author(s):  
CHEN HuaYong ◽  
◽  
ZHANG ShiTao ◽  
CHU GaoBin ◽  
ZHANG Yu ◽  
...  
Keyword(s):  
Eastern China ◽  
Spectral Characteristics ◽  
Short Wave ◽  
Porphyry Deposits ◽  
Alteration Minerals ◽  
Short Wave Infrared ◽  
Ore Exploration ◽  
Ore District

scholarly journals Integrative 3D Geological Modeling Derived from SWIR Hyperspectral Imaging Techniques and UAV-Based 3D Model for Carbonate Rocks

2021 ◽  
Vol 13 (15) ◽  
pp. 3037
Author(s):  
Huy Hoa Huynh ◽  
Jaehung Yu ◽  
Lei Wang ◽  
Nam Hoon Kim ◽  
Bum Han Lee ◽  
...  
Keyword(s):  
3D Model ◽  
Imaging Techniques ◽  
Iron Hydroxide ◽  
Spectral Characteristics ◽  
Short Wave ◽  
Rock Classification ◽  
3D Geological Modeling ◽  
Logistic Regression Models ◽  
Rock Formations ◽  
Absorption Features

This paper demonstrates an integrative 3D model of short-wave infrared (SWIR) hyperspectral mapping and unmanned aerial vehicle (UAV)-based digital elevation model (DEM) for a carbonate rock outcrop including limestone and dolostone in a field condition. The spectral characteristics in the target outcrop showed the limestone well coincided with the reference spectra, while the dolostone did not show clear absorption features compared to the reference spectra, indicating a mixture of clay minerals. The spectral indices based on SWIR hyperspectral images were derived for limestone and dolostone using aluminum hydroxide (AlOH), hydroxide (OH), iron hydroxide (FeOH), magnesium hydroxide (MgOH) and carbonate ion (CO32−) absorption features based on random forest and logistic regression models with an accuracy over 87%. Given that the indices were derived from field data with consideration of commonly occurring geological units, the indices have better applicability for real world cases. The integrative 3D geological model developed by co-registration between hyperspectral map and UAV-based DEM using best matching SIFT descriptor pairs showed the 3D rock formations between limestone and dolostone. Moreover, additional geological information of the outcrop was extracted including thickness, slope, rock classification, strike, and dip.

scholarly journals Evaporated Se x Te 1‐ x Thin Films with Tunable Bandgaps for Short‐Wave Infrared Photodetectors

2020 ◽  
Vol 32 (38) ◽  
pp. 2001329 ◽  
Author(s):  
Chaoliang Tan ◽  
Matin Amani ◽  
Chunsong Zhao ◽  
Mark Hettick ◽  
Xiaohui Song ◽  
...  
Keyword(s):  
Thin Films ◽  
Short Wave ◽  
Infrared Photodetectors ◽  
Short Wave Infrared

scholarly journals Quantum magneto transport properties of nanostructure multi quantum wells short wave Infrared detectors

2021 ◽  
Vol 1743 ◽  
pp. 012009
Author(s):  
Merieme Benaadad ◽  
Abdelhakim Nafidi ◽  
Samir Melkoud ◽  
Driss Barkissy ◽  
Nassima Benchtaber
Keyword(s):  
Quantum Wells ◽  
Transport Properties ◽  
Infrared Detectors ◽  
Short Wave ◽  
Short Wave Infrared

CO2 retrieval model and analysis in short-wave infrared spectrum

Optik ◽  
2016 ◽  
Vol 127 (10) ◽  
pp. 4422-4425 ◽  
Author(s):  
Yanfen Li ◽  
Chunmin Zhang ◽  
Dongdong Liu ◽  
Jie Chen ◽  
Piao Rong ◽  
...  
Keyword(s):  
Infrared Spectrum ◽  
Short Wave ◽  
Retrieval Model ◽  
Short Wave Infrared
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