scholarly journals Assessment of surface geophysical methods in geothermal exploration and recommendations for future research

1978 ◽  
Author(s):  
N.E. Goldstein ◽  
R.A. Norris ◽  
M.J. Wilt
Keyword(s):  
Geophysical Methods ◽  
Future Research ◽  
Geothermal Exploration

GEOPHYSICAL ACTIVITY IN 1976

Geophysics ◽  
1977 ◽  
Vol 42 (5) ◽  
pp. 1070-1084 ◽  
Author(s):  
H. R. Espey
Keyword(s):  
Geophysical Methods ◽  
Groundwater Exploration ◽  
Computer Processing ◽  
Petroleum Exploration ◽  
Government Agencies ◽  
Survey Questionnaire ◽  
Geothermal Exploration ◽  
Geophysical Techniques

This report provides statistics on worldwide use of geophysical methods in 1976. Data were obtained primarily through a survey questionnaire which was mailed out to more than 500 companies, government agencies, and universities that use geophysical techniques for petroleum exploration, oceanography, engineering, mining, geothermal exploration, and groundwater exploration. Response to the survey was excellent, providing detailed information on all types of airborne, land, and marine surveys. Computer processing was utilized in tabulating the statistics to provide detailed information on methods used, line‐miles covered, and average costs. Data not supplied on the questionnaire for costs or line‐mileage were estimated on the basis of worldwide averages to produce a more comprehensive report.

GEOPHYSICAL ACTIVITY IN 1975

Geophysics ◽  
1976 ◽  
Vol 41 (4) ◽  
pp. 780-794 ◽  
Author(s):  
H. R. Espey
Keyword(s):  
Geophysical Methods ◽  
Groundwater Exploration ◽  
Computer Processing ◽  
Petroleum Exploration ◽  
Government Agencies ◽  
Survey Questionnaire ◽  
Geothermal Exploration ◽  
Unit Costs ◽  
Geophysical Surveys ◽  
Geophysical Techniques

This report provides statistics on worldwide use of geophysical methods in 1975. Data were obtained primarily through a survey questionnaire which was mailed out to more than 1500 companies, government agencies, and universities that use geophysical techniques for petroleum exploration, oceanography, engineering, mining, geothermal exploration, and groundwater exploration. Response to the survey was excellent and provided detailed information on more than 2100 geophysical surveys. Data on unit costs, methods used, and line‐miles covered are believed to be more accurate this year as a result of better cooperation from industry in filling out the questionnaires. Computer processing was utilized in tabulating the statistics to provide increased accuracy and detail. Data not supplied on the questionnaire for costs or line mileage were estimated on the basis of worldwide averages to produce a more comprehensive report.

Fluvial facies models: a review of Canadian research

1993 ◽  
Vol 17 (2) ◽  
pp. 205-222 ◽  
Author(s):  
Edward J. Hickin
Keyword(s):  
Geophysical Methods ◽  
Statistical Testing ◽  
Future Research ◽  
Reflection Seismology ◽  
Element Analysis ◽  
Environmental Correlations ◽  
Braided Rivers ◽  
River Planform ◽  
Ground Penetrating ◽  
Facies Models

Canadian river scientists made significant contributions to the early development (1960-80) of fluvial facies models, particularly to those for braided rivers. More recent Canadian studies (1980-92) have centred on understanding the facies sedimentology of anastomosed and wandering gravel-bed rivers. River planform facies models are distinctly limited as indicators of fluvial style because of: (1) spurious environmental correlations; (2) the difficulty of river planform definition; (3) differential preservation potential of facies; (4) inadequate and unsystematic field sampling; (5) flawed statistical testing; and (6) the inappropriate space scale adopted for analysis. The scale problems of facies analysis may be overcome by employing architectural element analysis in conjunction with modem geophysical methods such as shallow reflection seismology and ground-penetrating radar. Future research should focus on devising specific tests of element-scale sedimentological relationships based on the contemporary fluvial enrivonment.

Efficiency Of Integrated Seismic Methods Approach To Near-Surface Characterization

2020 ◽  
Author(s):  
Irena Gjorgjeska ◽  
Vlatko Sheshov ◽  
Kemal Edip ◽  
Dragi Dojchinovski
Keyword(s):  
Surface Characterization ◽  
Seismic Refraction ◽  
Geophysical Methods ◽  
Cost Effective ◽  
Integrated Approach ◽  
Image Resolution ◽  
Future Research ◽  
Near Surface ◽  
Seismic Methods ◽  
Refraction Seismic

<p>Surface seismic methods are among the most popular, widely accepted, geophysical methods for near-surface characterization. The most practical and effective way to perform in-situ measurements and data processing using different seismic methods as are seismic refraction, seismic reflection and MASW method in an integrated approach is presented in this paper. Each method has some advantages and limitations, but their application in an integrated approach provides higher accuracy in subsurface modeling. The same seismic equipment and, in most of the cases, the same acquisition parameters were used, enabling time and cost effective survey for subsurface characterization. The choice of these parameters was not random. Experimental research by use of the above-mentioned seismic methods was carried out in a long period in order to define the optimal parameters for successful application of an integrated technique in future research. During this survey, particular attention was paid to the influence of the acquisition parameters on the dispersion image resolution in the MASW surveys and extraction of an effective dispersion curve.</p><p>The results of the performed surveys at characteristic locations in R. North Macedonia are presented to show the efficiency of the combined methods approach.</p>

The self‐potential method in the geothermal exploration of Greece

Geophysics ◽  
1997 ◽  
Vol 62 (6) ◽  
pp. 1715-1723 ◽  
Author(s):  
George Apostolopoulos ◽  
Ioannis Louis ◽  
Evangelos Lagios
Keyword(s):  
Surrounding Medium ◽  
Geophysical Methods ◽  
Low Frequency ◽  
Potential Method ◽  
Geothermal System ◽  
Electrode Polarization ◽  
Geothermal Exploration ◽  
Contour Maps ◽  
Tectonic Features ◽  
Self Potential

Self‐potential (SP) anomalies are generated by flows of fluid, heat, and ions in the earth. SP investigations have been used to locate and delineate sources associated with such flows in three areas of geothermal interest in Greece—Lesvos Island, Loutra Hypatis (central Greece), and Nisyros Island. A combination of geophysical methods, with SP being the primary method, has been applied in these areas. The SP method is adversely influenced by various sources of noise. Field procedures have been suggested to minimize their effects by monitoring electrode polarization and telluric activity. The interpretation of SP contour maps is preferred to using profile data. A procedure was adopted for SP interpretation, and the results were satisfactory. However, this model is based on thermoelectric sources only and is not related directly to hot fluid movement. In all three survey areas, the geothermal zones delimited by the SP interpretation in combination with data acquired by other geophysical methods result in an integrated interpretation of the geothermal system. Since SP and very‐low‐frequency (VLF) anomalies can be generated by the same geological source (i.e., geothermal, highly conductive zone), the corresponding results are compared to provide a strong indication of the presence of geothermal zones. The activity of geothermal zones affects the conductivity of the surrounding medium, which also can be detected by dc resistivity and audio‐magnetotelluric (AMT) methods. In addition, geothermal zones can be related to various interfaces or tectonic features that can be detected by gravity or seismic methods.

A review of geophysical methods for geothermal exploration

2015 ◽  
Vol 44 ◽  
pp. 87-95 ◽  
Author(s):  
Janvier Domra Kana ◽  
Noël Djongyang ◽  
Danwe Raïdandi ◽  
Philippe Njandjock Nouck ◽  
Abdouramani Dadjé
Keyword(s):  
Geophysical Methods ◽  
Geothermal Exploration

A discussion of major geophysical methods used for geothermal exploration in Africa

2016 ◽  
Vol 58 ◽  
pp. 775-781 ◽  
Author(s):  
Zakari Aretouyap ◽  
Philippe Njandjock Nouck ◽  
Robert Nouayou
Keyword(s):  
Geophysical Methods ◽  
Geothermal Exploration

scholarly journals Marine Monitoring for Offshore Geological Carbon Storage—A Review of Strategies, Technologies and Trends

Geosciences ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 383
Author(s):  
Ann E. A. Blomberg ◽  
Ivar-Kristian Waarum ◽  
Christian Totland ◽  
Espen Eek
Keyword(s):  
Marine Environment ◽  
Carbon Capture ◽  
Geophysical Methods ◽  
Carbon Capture And Storage ◽  
Future Research ◽  
Marine Monitoring ◽  
Monitoring Strategies ◽  
Permanent Storage ◽  
The Many ◽  
And Storage

Carbon capture and storage (CCS) could significantly contribute to reducing greenhouse gas emissions and reaching international climate goals. In this process, CO2 is captured and injected into geological formations for permanent storage. The injected plume and its migration within the reservoir is carefully monitored, using geophysical methods. While it is considered unlikely that the injected CO2 should escape the reservoir and reach the marine environment, marine monitoring is required to verify that there are no indications of leakage, and to detect and quantify leakage if it should occur. Marine monitoring is challenging because of the considerable area to be covered, the limited spatial and temporal extent of a potential leakage event, and the considerable natural variability in the marine environment. In this review, we summarize marine monitoring strategies developed to ensure adequate monitoring of the marine environment without introducing prohibitive costs. We also provide an overview of the many different technologies applicable to different aspects of marine monitoring of geologically stored carbon. Finally, we identify remaining knowledge gaps and indicate expected directions for future research.

scholarly journals Application of integrated geophysical methods in geothermal exploration: a case in Zhangjiakou

2021 ◽  
Vol 660 (1) ◽  
pp. 012108
Author(s):  
Dailei Zhang ◽  
Wenzhen Yuan ◽  
Yifei Xing ◽  
Yanyan Li ◽  
Xiaodong Lei ◽  
...  
Keyword(s):  
Geophysical Methods ◽  
Geothermal Exploration
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