Experimental study discovered that: (i) coal rocks and sandstone in the course of loading have three types of infrared thermal image features and three types of infrared radiation temperature features; (ii) infrared d...Experimental study discovered that: (i) coal rocks and sandstone in the course of loading have three types of infrared thermal image features and three types of infrared radiation temperature features; (ii) infrared detection is comparable with acoustic emission detection and electrical resistance detection. Generally, the infrared forewarning of coal rocks’ failure comes later than that of acoustic and electrical resistance, but the infrared radiation temperature forewarning of coal burst comes earlier. On the basis of comprehensive study and analysis, it was suggested that stress nearby 0.79 σ c should be taken as the stress-caution-zone for rock mass failure, ground pressure and its disasters monitoring.展开更多
Geoforensic techniques are being deployed in searches for hidden objects to counteract the shortcomings of conventional blunderbuss methods.Processing of crime scenes during searches for clandestine graves and buried ...Geoforensic techniques are being deployed in searches for hidden objects to counteract the shortcomings of conventional blunderbuss methods.Processing of crime scenes during searches for clandestine graves and buried objects is often destructive.Manual excavation and other invasive methods are restricted in many contemporary situations,and the location of a body is essential for forensic investigations.Geoforensics and geophysical surveys are important tools for assisting law enforcement agencies in locating crime scenes,clandestine graves,drugs,artifacts,hazardous waste,and illegal weapons and ammunitions stored underground in preparation for terrorist attacks.Geoscience search techniques such as the geoforensic search strategy are among many models used to help find mass graves,locate missing persons,and verify information acquired from incomplete intelligence.Trace amounts of soils,sediments,and other geological materials can provide geolocations and aid in the development of a primary search area.Forensic geoscience techniques and equipment such as metal detectors,magnetic surveys,electromagnetic conductivity surveys,ground penetrating radar surveys,augering(probing),detector dogs surveys,and gravity and seismic fluctuation monitoring are discussed in this paper.In addition to the location of potential graves and ambush sites,the soil beneath the decomposing cadavers can be used to predict the postmortem interval for the deceased.Soil information and geo-mapping data can provide productive intelligence for military and national security agencies.Antiquities crimes and crimes involving gemstones in which the evidence passes through many hands can be traced back to the place of origin by checking for their geo-morphology.Serious crimes,including murder,genocide,and terrorism,can be prevented by the use of operational and decisive geoforensic techniques.This paper highlights the multidisciplinary information exchange that occurs between forensic burial science,forensic geology,and trace evidence in criminal inve展开更多
A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil ...A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil engineering and cultural heritage studies. The investigations were carried out using different tomographic 2D and 3D approaches as well as different energy sources, namely sonic, ultrasonic and electromagnetic （radar） waves, electric potential fields, and infrared thermography. Many efforts have been made to modify instruments and procedures in order to improve the resolution of the surveys as well as to greatly reduce the time of the measurements without any loss of information. The main new methodologies here discussed are the sonic imprint, the global tomographic traveltime, the electrical resistivity tomography, and the control of external films （patinas） grown on stone monuments. The results seem to be very promising and suggest that it is the moment to dedicate time and effort to this new branch of geophysics, so that these methodologies can be used even more to diagnose, monitor, and safeguard not only engineering buildings and large structures but also ancient monuments and cultural artifacts, like pottery, statues, etc..展开更多
文摘Experimental study discovered that: (i) coal rocks and sandstone in the course of loading have three types of infrared thermal image features and three types of infrared radiation temperature features; (ii) infrared detection is comparable with acoustic emission detection and electrical resistance detection. Generally, the infrared forewarning of coal rocks’ failure comes later than that of acoustic and electrical resistance, but the infrared radiation temperature forewarning of coal burst comes earlier. On the basis of comprehensive study and analysis, it was suggested that stress nearby 0.79 σ c should be taken as the stress-caution-zone for rock mass failure, ground pressure and its disasters monitoring.
文摘Geoforensic techniques are being deployed in searches for hidden objects to counteract the shortcomings of conventional blunderbuss methods.Processing of crime scenes during searches for clandestine graves and buried objects is often destructive.Manual excavation and other invasive methods are restricted in many contemporary situations,and the location of a body is essential for forensic investigations.Geoforensics and geophysical surveys are important tools for assisting law enforcement agencies in locating crime scenes,clandestine graves,drugs,artifacts,hazardous waste,and illegal weapons and ammunitions stored underground in preparation for terrorist attacks.Geoscience search techniques such as the geoforensic search strategy are among many models used to help find mass graves,locate missing persons,and verify information acquired from incomplete intelligence.Trace amounts of soils,sediments,and other geological materials can provide geolocations and aid in the development of a primary search area.Forensic geoscience techniques and equipment such as metal detectors,magnetic surveys,electromagnetic conductivity surveys,ground penetrating radar surveys,augering(probing),detector dogs surveys,and gravity and seismic fluctuation monitoring are discussed in this paper.In addition to the location of potential graves and ambush sites,the soil beneath the decomposing cadavers can be used to predict the postmortem interval for the deceased.Soil information and geo-mapping data can provide productive intelligence for military and national security agencies.Antiquities crimes and crimes involving gemstones in which the evidence passes through many hands can be traced back to the place of origin by checking for their geo-morphology.Serious crimes,including murder,genocide,and terrorism,can be prevented by the use of operational and decisive geoforensic techniques.This paper highlights the multidisciplinary information exchange that occurs between forensic burial science,forensic geology,and trace evidence in criminal inve
基金supported by the "Centro per la Progettazione ed il Restauro" of the Sicilian region
文摘A large number of unconventional investigations have been implemented, tested, and validated in the field of microgeophysics, with the aim being to solve specific diagnostic and/or monitoring problems regarding civil engineering and cultural heritage studies. The investigations were carried out using different tomographic 2D and 3D approaches as well as different energy sources, namely sonic, ultrasonic and electromagnetic （radar） waves, electric potential fields, and infrared thermography. Many efforts have been made to modify instruments and procedures in order to improve the resolution of the surveys as well as to greatly reduce the time of the measurements without any loss of information. The main new methodologies here discussed are the sonic imprint, the global tomographic traveltime, the electrical resistivity tomography, and the control of external films （patinas） grown on stone monuments. The results seem to be very promising and suggest that it is the moment to dedicate time and effort to this new branch of geophysics, so that these methodologies can be used even more to diagnose, monitor, and safeguard not only engineering buildings and large structures but also ancient monuments and cultural artifacts, like pottery, statues, etc..
