Search results for keyword: velocity
Rock mass in situ test
In Situ Testing of Rock Mass
In situ testing is a process used to measure the mechanical behavior of rock mass in in situ or natural conditions (Ural 2006). This type of testing is not only performed to better understand the existing parameters of the natural rock strata, but to also provide valu......
1064 
Lucy
shallow reflection wave method
Introduction
The shallow refraction method is an important tool for the analysis of shallow subsurface structures. The method involves the analysis of seismic refraction data obtained from the subsurface in order to give an insight into the depth distribution of mechanical properties such as comp......
shallow refracted wave method
Introduction
Shallow refraction wave measurement is a geophysical method used to measure seismic velocity of subsurface layers. Originally developed in the 1920s, the method involves the use of a seismic source to generate a localized wave that is refracted when it reaches an interface between tw......
sonic test
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Ultrasonic testing, also called ultrasonic inspection, is a method of testing materials that uses sound waves generated by an ultrasonic probe to evaluate a materials characteristics. Ultrasonic testing is most commonly used to detect flaws or irregularities in steel and other metal parts, as we......
Earthquake Observation
Ground Motion Microseismic Observation
Microseismic monitoring is a technology that detects and records microseismic activities of the Earth’s subsurface. The technique provides direct insight into the mechanical behavior of a rock mass, thus enabling detailed characterization of the subsurface.......
deformation observation
Spacetime is an essential concept for understanding fundamental physics, and research into its properties has been ongoing for many years. The idea of a four-dimensional space-time continuum was first proposed by Albert Einstein in his Special Theory of Relativity around 1905. Although this concep......
Engineering Geophysical Logging
Introduction
Earth science downhole logging is a drilling engineering procedure that uses several methods to measure physical properties of rock formations present within a borehole. Downhole logging is used to assess the rock and fluid content around the borehole and to determine the characteris......
Groundwater velocity
The Speed of Groundwater Flow
Groundwater is an important resource in many parts of the world. It is a valuable source of water for drinking, agriculture, industry, and many other uses. While groundwater is a reliable and abundant resource, its movement can often be unpredictable. The speed of gro......
Debris Flow Survey
Landslide Survey
Landslides refer to a variety of processes that result in the movement of soil and rock downslope, which can range from a single rock to an entire mountain. Their occurrence is usually due to prolonged rains, earthquakes or the cutting off of the ground surface. Landslides are pa......
Engineering electrical prospecting
Engineering geophysics is a branch of geophysics which applies its methods to engineering problems. Examples of engineering geophysics applications are locating buried services, sub-surface voids, mineral exploration, groundwater exploitation, and archaeological survey. These applications use phys......
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