Detection and Monitoring of Subsurface Contamination by Using Geophysical Methods and Data: Case Studies of Contamination from Chemical and Biological (Biogeochemical) Processes

Author(s):  
Ali Ismet Kanli
2016 ◽  
Vol 99 ◽  
pp. 118-128 ◽  
Author(s):  
Lisa M. Fultz ◽  
Jennifer Moore-Kucera ◽  
Josefine Dathe ◽  
Marko Davinic ◽  
Gad Perry ◽  
...  

2020 ◽  
Vol 8 (4) ◽  
pp. SSi-SSv
Author(s):  
Irina Filina ◽  
Rao Yalamanchili ◽  
Simone Re ◽  
Daniele Colombo ◽  
Antony Price ◽  
...  

This special section illustrates the value of integration with nonseismic geophysical methods, namely potential fields (gravity and magnetics), electric and electromagnetic techniques. The primary objective is to overcome the overall underappreciation of these methods as exploration tools. We provide their brief overview and present nine case studies illustrating how the integrative approach to geophysical data analysis influences the overall result and reduces the uncertainty of the derived solution.


2012 ◽  
pp. 285-294 ◽  
Author(s):  
Almaz Torgoev ◽  
Laura Lamair ◽  
Isakbek Torgoev ◽  
Hans-Balder Havenith

2019 ◽  
Vol 38 (9) ◽  
pp. 720-724 ◽  
Author(s):  
Irina Filina ◽  
Ed K. Biegert ◽  
Luise Sander ◽  
Victoria Tschirhart ◽  
Neda Bundalo ◽  
...  

Following the 2018 SEG Annual Meeting, the Gravity and Magnetics Committee held a postconvention workshop titled “Integrated imaging.” The half-day workshop attracted nearly 50 participants from various backgrounds. Three primary objectives of the workshop were to explore the nonseismic toolbox, highlight real examples of integrated projects that benefitted (or did not benefit) from nonseismic data, and provide geoscientists from all backgrounds a learning opportunity to see how they might optimize the value of their imaging projects via integration with relatively low-cost nonseismic methods. The workshop had a highly interactive format that differed from traditional presentation-based settings. After eight brief case studies were presented, three concurrent guided discussions ensued. Participants were divided into three groups, and each group focused on one discussion topic at a time. The groups rotated, allowing everyone to discuss all three topics. The first discussion was centered on two general questions: what is integrated imaging, and what tools are available for it? The second discussion provided an opportunity to examine the relationships between different physical properties that must be managed during integrated multiphysics analysis. The third discussion focused on the costs and benefits of a multiparameter data acquisition. According to feedback from participants, these discussions were the most valuable part of the workshop. The participants agreed that an integrated approach in geophysical data analysis is a powerful but currently undervalued tool. Also noted were the value of integration with nonseismic methods illustrated in the case studies and the need for the integrated approach in data analysis to be taught in schools in addition to the classic overview of individual geophysical methods.


Geophysics ◽  
2013 ◽  
Vol 78 (5) ◽  
pp. B305-B315
Author(s):  
František Mantlík ◽  
Miloš Karous

Methodological aspects of gravity data processing and interpretation for assessing the possibility of exploiting geothermal energy for electricity production are presented. Gravimetry is one of the most economical and most effective geophysical methods for exploration of deep geologic structures. Unfortunately the gravity inversion ambiguity problem introduces the necessity of constraining gravity models by other independent data. The procedures interpreting 2D gravity models constrained by the results of an integration of other suitable geophysical methods are described in three case studies in the Czech Republic. Gravity, reflection and refraction seismics, magnetometry, resistivity, and vertical electric sounding data were collected along profiles at each locality. Two-dimensional gravity models based on complete Bouguer anomalies were constructed taking into account the results of processing and interpretation of other geophysical data. Relevant factors influencing the potential for geothermal energy exploitation were evaluated from the interpreted geophysical models. Promising zones suitable for future exploration were established at each locality. The most important structures for locating geothermal production and injection drills are deep tectonic fault zones which can freely support fluid flow. The presented examples show that the gravity anomalies caused by fracture zones can be significant enough to unambiguously interpret and evaluate their importance in terms of hydrological permeability. In addition, the presented case histories demonstrate that two-dimensional geophysical surveys can effectively be used to reduce exploration costs in geothermal projects.


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