scholarly journals Experimental Study on the Thermal Infrared Spectral Variation of Fractured Rock

2021 ◽  
Vol 13 (6) ◽  
pp. 1191
Author(s):  
Jianwei Huang ◽  
Shanjun Liu ◽  
Wenfang Liu ◽  
Chunju Zhang ◽  
Shuiping Li ◽  
...  

Previous studies have shown that thermal infrared radiation (TIR) anomalies occur in the vicinity of fractures that form when a rock is loaded to failure. Different types of fracturing modes correspond to different TIR anomaly trends. However, the spectral features and the mechanisms responsible for the TIR changes in the fracturing stage remain poorly understood. In this paper, experiments involving observations of the thermal infrared spectrum (8.0–13.0 μm) of loaded sandstone during the fracturing stage were conducted under outdoor conditions. The experiment yielded the following results: (1) Different fracturing modes can lead to different trends in the spectral radiance variation; (2) when an extensional fissure appeared on the rock surface, the radiance increased with a local peak in the 8.0–9.7 μm range; 3) when local bulging formed at the surface, the radiance decreased, with a local valley in the 8.0–9.7 μm range. The radiance variation caused by morphologic changes is the combined result of changes in both the temperature and the emissivity. The characteristic waveband corresponding to the reststrahlen features (RF) of quartz was mainly related to the emissivity change. This study provides a preliminary experimental foundation for the detection of crustal surface fractures via satellite-based remote sensing technology.

2012 ◽  
Vol 518-523 ◽  
pp. 5601-5604
Author(s):  
Xin Hui Xu

Choosing Fadou Town of Xichou County in Yunnan province as an example, and supported by the GIP, this paper uses the analysis result of dynamic monitor on the land use for the renewal of land use, thus forming the current situation chart of the land use after renewal. According to the area changes and types, etc. of the land use, this paper then does a qualitative and quantitative study on the project zone, and based on the dynamic changes of the land use and the conversion between its different types, this paper in the end sets up the matrix of the land use types and provides suggestions and measures to restore the ecological benefit in the rocky desertification area in the light of the practical condition of the project zone.


2013 ◽  
Vol 32 (1) ◽  
pp. 44 ◽  
Author(s):  
Zhong-Yin XU ◽  
Shan-Jun LIU ◽  
Li-Xin WU ◽  
Zhe FENG

Cosmetics ◽  
2019 ◽  
Vol 6 (3) ◽  
pp. 54
Author(s):  
Xu Zhang ◽  
Christos Bontozoglou ◽  
Perry Xiao

OTTER (opto-thermal transient emission radiometry) is an infrared remote sensing technology that has been extensively used in skin measurements. It is non-contact, non-invasive, and has a unique depth profiling capability. By selecting different detection wavelengths, OTTER can be used for different types of skin measurements, such as skin hydration measurements and skin topically applied substance measurements, etc. By plotting the results at different detection wavelengths, we can have an opto-thermal detection spectrum. Combining with OTTER’s unique depth profiling capability, we can get a depth-resolved opto-thermal detection spectrum. This is a powerful tool that can be used for many skin studies. Here we will present our latest study with details on the apparatus setup, theoretical background, as well as experimental results.


2009 ◽  
Author(s):  
Gabriele E. Arnold ◽  
Harald Hiesinger ◽  
Jörn Helbert ◽  
Carsten Paproth ◽  
Thomas Säuberlich ◽  
...  

1997 ◽  
Author(s):  
Tom Wilson ◽  
Rebecca Baugh ◽  
Ron Contillo ◽  
Tom Wilson ◽  
Rebecca Baugh ◽  
...  

1995 ◽  
Vol 32 (2) ◽  
pp. 77-83
Author(s):  
Y. Yüksel ◽  
D. Maktav ◽  
S. Kapdasli

Submarine pipelines must be designed to resist wave and current induced hydrodynamic forces especially in and near the surf zone. They are buried as protection against forces in the surf zone, however this procedure is not always feasible particularly on a movable sea bed. For this reason the characteristics of the sediment transport on the construction site of beaches should be investigated. In this investigation, the application of the remote sensing method is introduced in order to determine and observe the coastal morphology, so that submarine pipelines may be protected against undesirable seabed movement.


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