Combining geophysical methods, drilling, and monitoring techniques to investigate carbonaceous shale landslides along a railway line: a case study on Jiheng Railway, China

2021 ◽  
Author(s):  
Maoxin Su ◽  
Kai Cheng ◽  
Yimin Liu ◽  
Yiguo Xue ◽  
Peng Wang ◽  
...  
Keyword(s):  
Geophysical Methods ◽  
Carbonaceous Shale ◽  
Monitoring Techniques ◽  
Railway Line

A LOOK INTO THE EARTH: EVALUATING THE USE OF MAGNETIC SURVEY IN AFRICAN ARCHAEOLOGY

2004 ◽  
Vol 2 (1) ◽  
pp. 49-63 ◽  
Author(s):  
Carlos Magnavita ◽  
Norbert Schleifer
Keyword(s):  
Geophysical Methods ◽  
Field Research ◽  
Archaeological Sites ◽  
Magnetic Survey ◽  
The Past ◽  
Common Technique ◽  
Sub Saharan ◽  
Prehistoric Settlements ◽  
Present Case Study

In the last decades, geophysical methods such as magnetic survey have become a common technique for prospecting archaeological sites. At sub-Saharan archaeological sites, however, magnetic survey and correlated techniques never came into broad use and there are no signs for an immediate change of this situation. This paper examines the magnetic survey undertaken on the Nigerian site of Zilum, a settlement of the Gajiganna Culture (ca 1800-400 BC) located in the Chad Basin and dated to ca 600-400 BC. By means of the present case study, we demonstrate the significance of this particular type of investigation in yielding complementary data for understanding the character of prehistoric settlements. In conclusion, we point out that geophysical methods should play a more important role in modern archaeological field research, as they furnish a class of documentation not achievable by traditional survey and excavation methods, thus creating new perspectives for interpreting the past of African societies.

scholarly journals Multi-Parametric Imaging of Etruscan Chamber Tombs: Grotte Di Castro Case Study (Italy)

2021 ◽  
Vol 11 (17) ◽  
pp. 7875
Author(s):  
Vincenzo Sapia ◽  
Valerio Materni ◽  
Federico Florindo ◽  
Marco Marchetti ◽  
Andrea Gasparini ◽  
...  
Keyword(s):  
Geophysical Methods ◽  
Geochemical Data ◽  
Distribution Data ◽  
Resistivity Tomography ◽  
Resistivity Method ◽  
Method Integration ◽  
Radar Measurements ◽  
Soil Measurements ◽  
Ground Penetrating

A multi-parametric approach that involves the use of different geophysical methods coupled with geochemical data allowed us to identify undiscovered archeological burials in a funerary area of the Grotte di Castro Etruscan settlement. In particular, we tested the suitability of the capacitive resistivity method and the presence of Radon in soil for the identification of burials calibrating their outcomes over coincident survey profiles with standard geophysical techniques routinely applied for archaeological prospections. Soil Radon data were acquired both in a grid and along a profile to highlight anomalous gas concentrations, whereas electrical resistivity and ground-penetrating radar measurements were conducted on overlapping profiles to depict the electrical and electromagnetic subsurface distribution. Data integration showed a series of anomalies, suggesting the presence of multiple burials starting from a depth of approximately 1.5 m below the terrain surface. Slight anomalies of Radon in the soil were found to correspond to most of the recovered geophysical ones. Our results pointed out the effectiveness of geophysical method integration in archeological prospecting with the novelty of the joint use of Radon in soil measurements and capacitive resistivity tomography. The latter provided reliable results and can be considered as a standalone technique in archaeological surveys.

scholarly journals Demographic and functional potential of the Novosibirsk urban region in Russian Federation. A case study of transformations using the directional profile method

2016 ◽  
Vol 2 (320) ◽  
Author(s):  
Paulina Tobiasz-Lis ◽  
Marcin Wójcik
Keyword(s):  
Russian Federation ◽  
Research Programme ◽  
Economic Transformation ◽  
Urban Region ◽  
Railway Line ◽  
The Core ◽  
Functional Development ◽  
National Settlement ◽  
National Settlement System

The research presented in this article focuses on the urban region of Novosibirsk, which is one of the most industrialized part of Siberia and the Asian part of Russian Federation. To show relationships between the city as the core of the region and its peripheral area a case study analysing territorial units within the southern settlement belt along the Novosibirsk–Cherepanovo regional railway line over a distance of approx. 100 km. This belt was chosen because of the continuity of the settlement and due to the presence of different functional types of edge towns. The adopted system, from the core to the area of weakening direct links to Novosibirsk, helped to define the directional profile of the urban region as relating to the demographic and economic characteristics. The research was based on two methods of determining the functions of cities in the national settlement system: a research programme concerning the genesis of functional development and a research programme of specialised functions, the purpose of which is to determine the economic base (exogenous functions) of territorial units. The presented results have shown general tendencies in the transformations of the Novosibirsk urban region’s spatial structure, both in long-term perspective (the generic view of function development) and under contemporary circumstances related to the economic transformation of Russia.

Borehole seismic methods for geologic CO2 storage monitoring

2021 ◽  
Vol 40 (6) ◽  
pp. 434-441
Author(s):  
Don White ◽  
Thomas M. Daley ◽  
Björn Paulsson ◽  
William Harbert
Keyword(s):  
Co2 Storage ◽  
Geophysical Methods ◽  
Time Lapse ◽  
Microseismic Monitoring ◽  
Seismic Methods ◽  
Geologic Co2 Storage ◽  
Subsurface Monitoring ◽  
Borehole Seismic ◽  
Time Lapse Imaging

Borehole geophysical methods are a key component of subsurface monitoring of geologic CO2 storage sites because boreholes form a locus where geophysical measurements can be compared directly with the controlling geology. Borehole seismic methods, including intrawell, crosswell, and surface-to-borehole acquisition, are useful for site characterization, surface seismic calibration, 2D/3D time-lapse imaging, and microseismic monitoring. Here, we review the most common applications of borehole seismic methods in the context of storage monitoring and consider the role that detailed geophysical simulations can play in answering questions that arise when designing monitoring plans. Case study examples are included from the multitude of CO2 monitoring projects that have demonstrated the utility of borehole seismic methods for this purpose over the last 20 years.

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