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Journal articles on the topic 'Geophysical'

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Author: Grafiati
Published: 4 June 2021
Last updated: 12 February 2022

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1

Harvey, Terry. "Minerals geophysics: Geophysical advice." Preview 2019, no. 203 (November 2, 2019): 47. http://dx.doi.org/10.1080/14432471.2019.1694176.

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2

Loginov, D. S. "Cartographic support of geophysical research: current situation and prospects." Geodesy and Cartography 950, no. 8 (September 20, 2019): 32–44. http://dx.doi.org/10.22389/0016-7126-2019-950-8-32-44.

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The features of cartographic supporting geophysical research at the present stage of cartography and exploration geophysics development are discussed. The current situation and prospects of using GIS and web technologies are characterized basing on the analysis of scientific and industrial experience of domestic and foreign public as well as private geological and geophysical organizations. The analysis was performed at key stages of geophysical research, including the analysis of geological and geophysical studying the work area, designing geophysical works, field works, processing and interpretation of geophysical observations results, compilation of reporting materials, as well as the accumulation and storage of information. The examples of modern geoportals that provide quick access to geological and geophysical infor-mation in various forms of presentation, including cartographic data, are presented in article. The conclusions and recommendations were formulated according to results of the study. They are aimed at improving the efficiency of cartographic supporting geophysical research and the development of inter-sectoral interaction between cartography and geophysics.
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3

FOMENKO, N. E. "ON METHODOLOGY OF TEACHING GEOPHYSICAL COURSES AT THE INSTITUTE OF EARTH SCIENCES, SFU." Proceedings of higher educational establishments. Geology and Exploration, no. 4 (August 16, 2018): 68–76. http://dx.doi.org/10.32454/0016-7762-2018-4-68-76.

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The results of the works undertaken by students on practical classes and during educational practices have been discussed. Causes and difficulties in student learning of exploratory geophysics have been analyzed. It has been found a deficiency in practical skills of future engineers relevant to the work with geophysical facilities and equipment and further mental processing of the measured parameters of natural and artificial geophysical fields. A brief description has been given for improvements in the methodology of teaching geophysics to future geology and geoecology engineers via inclusion of practical works with geophysical equipment on the test site on the Zorge Street with tasks linked to engineering-geological cross-section study and mapping underground infrastructure on the given area. There are some other examples of student involvement in solution of geophysical tasks on the objects of educational geophysical practices with subsequent detailed geological and geophysical interpretation.
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4

ΠΑΠΑΔΟΠΟΥΛΟΣ, ΤΑΞΙΑΡΧΗΣ. "The importance of using geophysical methods in shallow investigations for natural or artificial structures." Bulletin of the Geological Society of Greece 34, no. 6 (January 1, 2002): 2219. http://dx.doi.org/10.12681/bgsg.16864.

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In this review paper it is presented the usefulness and importance of using geophysical methods in shallow subsurface investigations. It is given emphasis on problems that can be handled by the engineering and environmental geophysics which are branches of applied geophysics. First, the geophysical methods that are mainly used are referred, their efficiency, as well as the potentialities and restrictions that they present. Next, some basic topics are defined that the geophysicist has to take into account in order to end up with positive results. Finally, the advantages and disadvantages of the most used geophysical methods are referred and some examples are given from the experience obtained by carrying out geophysical investigations in Greece
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5

Peltoniemi, Markku. "Impact factors, citations, and GEOPHYSICS." GEOPHYSICS 70, no. 2 (March 2005): 3MA—17MA. http://dx.doi.org/10.1190/1.1897303.

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This review assesses the contributions and impact that GEOPHYSICS journal has made to both the theory and the applications of exploration geophysics during its publication life span. The contributions are evaluated first on the basis of Journal Citation Reports data, which summarize information available since 1975 about the impact factor of our journal. The impact factor for GEOPHYSICS in 1975–2002 has ranged between 1.461 and 0.591, with an average of 0.924 and with a relative ranking between 16 and 45 for all journals in its category. The journal receiving the highest impact factor for the period 2000–2003 in the “Geochemistry and Geophysics” category is Reviews of Geophysics, with an average impact factor of 7.787 and which ranged between 9.226 and 6.083. A second and important criterion is the frequency with which individual papers published in GEOPHYSICS have been cited elsewhere. This information is available for the entire publication history of GEOPHYSICS and supports the choices made for the early classic papers. These were listed in both the Silver and the Golden Anniversary issues of GEOPHYSICS. In August 2004, the five most-cited papers in GEOPHYSICS published in the time period 1936 to February 2003 are Thomsen (1986) with 423 citations, Constable et al. (1987) with 380 citations, Cagniard (1953) with 354 citations, Sen et al. (1981) with 313 citations, and Stolt (1978) with 307 citations. Fifteen more papers exceed a threshold value of 200 citations. During 2000–2002, GEOPHYSICS, Geophysical Prospecting, Geophysical Journal International, and Journal of Applied Geophysics were the four journals with the highest number of citations of papers published in GEOPHYSICS. In the same 2000–2002 period, those journals in which papers published in GEOPHYSICS are cited most are GEOPHYSICS, Geophysical Prospecting, Geophysical Journal International, and Journal of Geophysical Research. During 1985, the total number of citations in all journals in the Science Citation Index database to papers published in GEOPHYSICS was 2657. By 2002, this same citation count for GEOPHYSICS had increased to 4784.
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6

Pennington, Wayne D. "Reservoir geophysics." GEOPHYSICS 66, no. 1 (January 2001): 25–30. http://dx.doi.org/10.1190/1.1444903.

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The concept of petroleum reservoir geophysics is relatively new. In the past, the role of geophysics was largely confined to exploration and, to a lesser degree, the development of discoveries. As cost‐efficiency has taken over as a driving force in the economics of the oil and gas industry and as major assets near abandonment, geophysics has increasingly been recognized as a tool for improving the bottom line closer to the wellhead. The reliability of geophysical surveys, particularly seismic, has greatly reduced the risk associated with drilling wells in existing fields, and the ability to add geophysical constraints to statistical models has provided a mechanism for directly delivering geophysical results to the reservoir engineer.
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7

Herman, Gérard C. "Annual Meeting Selection Papers." GEOPHYSICS 70, no. 4 (July 2005): 3JA. http://dx.doi.org/10.1190/1.2035089.

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Most authors of GEOPHYSICS papers are from universities or government research institutions. That does not mean no interesting research is being done by the oil or geophysical industry. In the current competitive age, it is apparently difficult for geophysicists from the industry to find time to write elaborate papers for GEOPHYSICS. Therefore, the GEOPHYSICS editors have decided to encourage authors from the oil and geophysical industry to submit high-quality papers. SEG Editor Gerard T. Schuster asked me to develop a shorter route for such papers that have at least one author from the industry.
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8

KASIAN, Antonina. "POWERFUL GEOPHYSICAL INDUSTRY AS THE BASIS OF ENERGY INDEPENDENCE OF UKRAINE." Ukrainian Geologist, no. 1-2(44-45) (June 30, 2021): 45–50. http://dx.doi.org/10.53087/ug.2021.1-2(44-45).238872.

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In the oil and gas industry, the geophysics bears the most knowledge-intensive and high-tech activity. The results of geophysical studies underlie the search, exploration and development of oil and gas fields. It is impossible to effectively drill, operate and repair wells without it. Success in the development of technology and technology in geophysics depends on the level of academic and industrial science, the effectiveness of the education system, and the intellectual training of personnel. The paper provides a historical insight into the era of geophysical research from the beginning of the last century to the present day. The current state and prospects of further development of the geophysical industry as the basis of Ukraine’s energy independence are analyzed. The main reasons for the negative state of affairs in Ukrainian geophysics are as follows: loss of professionalism, lack of high-quality basic education, lack of funding and short-sighted decision-making.
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9

Sheriff, Robert E. "History of geophysical technology through advertisements in GEOPHYSICS." GEOPHYSICS 50, no. 12 (December 1985): 2299–410. http://dx.doi.org/10.1190/1.1441872.

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Exploration geophysics has been largely a free‐enterprise venture and new developments have been “sold” through advertisements in the journal Geophysics. Thus, a review of advertisements provides an eclectic history of geophysics. The following is the view obtained from advertisements alone. The dates cited are usually when ads for innovations first appeared. New features often had been applied earlier, before they were advertised.
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10

Lyubovtseva, Yulia S., Alexei D. Gvishiani, Anatoly A. Soloviev, Olga O. Samokhina, and Roman I. Krasnoperov. "Sixtieth anniversary of the International Geophysical Year (1957–2017) – contribution of the Soviet Union." History of Geo- and Space Sciences 11, no. 2 (August 17, 2020): 157–71. http://dx.doi.org/10.5194/hgss-11-157-2020.

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Abstract. The International Geophysical Year (IGY) was the most significant international scientific event in geophysical sciences in the history of mankind. This was the largest international experiment that brought together about 300 000 scientists from 67 countries. Well-planned activity of national and international committees was organized for the first time. The history of the IGY organization and complex international experiments in planetary geophysics conducted within its program are discussed in this article. Special attention is given to the estimation of the significance of this project for developing worldwide geophysical research.
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11

Peng, Fenglin, Le Peng, Jian Zhang, Guoqiang Xue, Maining Ma, and Yunfei Zhang. "From Geophysical Data to Geophysical Informatics." Data Science Journal 14 (May 22, 2015): 13. http://dx.doi.org/10.5334/dsj-2015-013.

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12

Orfanos, C., and G. Apostolopoulos. "Multiparameter analysis of geophysical methods for target detection: The unified geophysical model approach." GEOPHYSICS 78, no. 6 (November 1, 2013): IM1—IM13. http://dx.doi.org/10.1190/geo2012-0285.1.

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Void detection is a difficult task for geophysical methods. The main disadvantage is the uncertainty of the final interpretation and the need for verification of the results with direct methods of underground investigation. A good way to reduce this uncertainty, apart from drilling, is through the implementation of more than one geophysical method in the same area. An integrated approach of geophysical methods can be achieved by using multiparameter statistical techniques, such as cluster analysis. Firstly, the effectiveness of multiparameter analysis on synthetic data is studied and then on real data from a controlled test site. In addition, a new approach for the creation of a unified geophysical model (UGM) is suggested to optimize target detection. Finally, the UGM approach is implemented and is evaluated in a real case study for void detection in an urban environment. The UGM offers the integrated information of the geophysical methods that are used without the need for predefined relationships. It is a model resulting from a specific statistical procedure, free of subjective precautions, and easily understood even by nonexperts in geophysics. Finally, it offers an additional tool for the better understanding of the subsurface as far as the difficult task of void detection is concerned.
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13

Kuchin, Yan, and Jānis Grundspeņķis. "Machine Learning Methods for Identifying Composition of Uranium Deposits in Kazakhstan." Applied Computer Systems 22, no. 1 (December 1, 2017): 21–27. http://dx.doi.org/10.1515/acss-2017-0014.

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Abstract The paper explores geophysical methods of wells survey, as well as their role in the development of Kazakhstan’s uranium deposit mining efforts. An analysis of the existing methods for solving the problem of interpreting geophysical data using machine learning in petroleum geophysics is made. The requirements and possible applications of machine learning methods in regard to uranium deposits of Kazakhstan are formulated in the paper.
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14

van der Baan, Mirko, and Christian Jutten. "Neural networks in geophysical applications." GEOPHYSICS 65, no. 4 (July 2000): 1032–47. http://dx.doi.org/10.1190/1.1444797.

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Neural networks are increasingly popular in geophysics. Because they are universal approximators, these tools can approximate any continuous function with an arbitrary precision. Hence, they may yield important contributions to finding solutions to a variety of geophysical applications. However, knowledge of many methods and techniques recently developed to increase the performance and to facilitate the use of neural networks does not seem to be widespread in the geophysical community. Therefore, the power of these tools has not yet been explored to their full extent. In this paper, techniques are described for faster training, better overall performance, i.e., generalization, and the automatic estimation of network size and architecture.
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15

Lines, Larry, John P. Castagna, and Sven Treitel. "Geophysics in the new millennium." GEOPHYSICS 66, no. 1 (January 2001): 14. http://dx.doi.org/10.1190/1.1444890.

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Upon entering the twenty‐first century, we see wide‐ranging changes in geophysics. As of this writing, quality and utility of geophysical data continues a trend of inexorable improvement punctuated by individual quantum steps (such as the 3-D seismic revolution). To a large extent, this improvement has been accomplished on the coattails of advances in computing and related disciplines. These advances have allowed cost‐effective implementation of methods that exploit our steadily increasing understanding of geophysical theory in ever increasingly realistic earth models. As a result, geophysical methods can now provide clearer images at greater distances with bette resolution and signal‐to‐noise ratio than ever before.
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16

Wynn, Jeffrey C. "Archaeological prospection: An introduction to the Special Issue." GEOPHYSICS 51, no. 3 (March 1986): 533–37. http://dx.doi.org/10.1190/1.1442107.

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Archaeological prospection, as the use of geophysical methods in archaeology is known in Europe, is about four decades old (seven decades, if aerial photography of archaeological sites is included). Virtually the entire range of geophysical methods, perhaps excluding only borehole techniques, has found application in the search for archaeological sites unseen or partially known. Pressures by developers, and the public’s growing sensitivity toward the preservation of historic and prehistoric cultural artifacts and sites, has led to an accelerating use of high‐resolution geophysical methods in the archaeological sciences. The archaeogeophysical articles in this Special Issue are reasonably representative of the development of this specialty field of geophysics.
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17

Greenhouse, John P., and David D. Slaine. "Geophysical modelling and mapping of contaminated groundwater around three waste disposal sites in southern Ontario." Canadian Geotechnical Journal 23, no. 3 (August 1, 1986): 372–84. http://dx.doi.org/10.1139/t86-052.

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We present an approach to the use of electomagnetic geophysical methods for delineating groundwater contamination, and test the concepts at three waste disposal sites. The approach includes a technique for modelling a site's response to a variety of instruments, and a device-independent method of contouring the data. The modelling attempts to account for the noise inherent in the measurement process, particularly the effects of lateral variations in stratigraphy. These concepts are evaluated by comparing the geophysical response to groundwater conductivities measured in sampling wells. We conclude that geophysics offers a cost-effective supplement to drilling, and that it is best used in a reconnaissance mode to map the general distribution of contamination prior to a detailed sampling program. The correlation between the observed and predicted geophysical response as a function of groundwater conductivity is as good as can be expected given the uncertainties in the process. The methodology proposed is simple to use and practical. Key words: groundwater, contamination, geophysics, electromagnetic, mapping, modelling.
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18

Zhdaneev, Oleg, Aleksandr Zaitsev, and Valerii Lobankov. "Metrological support of equipment for geophysical research." Journal of Mining Institute 246 (January 23, 2021): 667–77. http://dx.doi.org/10.31897/pmi.2020.6.9.

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The article discusses the problems associated with metrological support of equipment for geophysical research, issues of ensuring the uniformity of well measurements, the creation of Russian standards for calibrating well equipment when determining the porosity coefficients and oil, gas, water saturation, determining the parameters of defects during well cementing and technical condition of casing strings and the water-oil-gas flow. The problems of creating full-fledged methods for measuring the parameters of oil and gas fields with conventional and hard-to-recover reserves have been investigated. The key directions of development of the Russian metrological support of geophysical well measurements were determined. The tasks that need to be solved to create metrological support for geophysical well logging as an industry that meet international standards are indicated. The expediency of creating a Russian Geophysical Center for Metrology and Certification, the need to develop a new and update the existing regulatory framework, which will allow Russian geophysics to reach the level of world leaders in the field of geophysical research, are substantiated.
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19

Ozcep, F., and T. Ozcep. "Notes on the history of geophysics in the Ottoman Empire." History of Geo- and Space Sciences 5, no. 2 (September 5, 2014): 163–74. http://dx.doi.org/10.5194/hgss-5-163-2014.

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Abstract. In Anatolia, the history of geophysical sciences may go back to antiquity (600 BC), namely the period when Thales lived in Magnesia (Asia Minor). In the modern sense, geophysics started with geomagnetic works in the 1600s. The period between 1600 and 1800 includes the measurement of magnetic declination, inclination and magnetic field strength. Before these years, there is a little information, such as how to use a compass, in the Kitab-i Bahriye (the Book of Navigation) of Piri Reis, who is one of the most important mariners of the Ottoman Empire. However, this may not mean that magnetic declination was generally understood. The first scientific book relating to geophysics is the book Fuyuzat-i Miknatissiye that was translated by Ibrahim Müteferrika and printed in 1731. The subject of this book is earth's magnetism. There is also information concerning geophysics in the book Cihannuma (Universal Geography) that was written by Katip Celebi and in the book Marifetname written by Ibrahim Hakki Erzurumlu, but these books are only partly geophysical books. In Istanbul the year 1868 is one of the most important for geophysical sciences because an observatory called Rasathane-i Amire was installed in the Pera region of this city. At this observatory the first systematic geophysical observations such as meteorological, seismological and even gravimetrical were made. There have been meteorological records in Anatolia since 1839. These are records of atmospheric temperature, pressure and humidity. In the Ottoman Empire, the science of geophysics is considered as one of the natural sciences along with astronomy, mineralogy, geology, etc., and these sciences are included as a part of physics and chemistry.
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20

Lozada Aguilar, Miguel Ángel, Andrei Khrennikov, Klaudia Oleschko, and María de Jesús Correa. "Quantum Bayesian perspective for intelligence reservoir characterization, monitoring and management." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 375, no. 2106 (October 2, 2017): 20160398. http://dx.doi.org/10.1098/rsta.2016.0398.

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The paper starts with a brief review of the literature about uncertainty in geological, geophysical and petrophysical data. In particular, we present the viewpoints of experts in geophysics on the application of Bayesian inference and subjective probability. Then we present arguments that the use of classical probability theory (CP) does not match completely the structure of geophysical data. We emphasize that such data are characterized by contextuality and non-Kolmogorovness (the impossibility to use the CP model), incompleteness as well as incompatibility of some geophysical measurements. These characteristics of geophysical data are similar to the characteristics of quantum physical data. Notwithstanding all this, contextuality can be seen as a major deviation of quantum theory from classical physics. In particular, the contextual probability viewpoint is the essence of the Växjö interpretation of quantum mechanics. We propose to use quantum probability (QP) for decision-making during the characterization, modelling, exploring and management of the intelligent hydrocarbon reservoir . Quantum Bayesianism (QBism), one of the recently developed information interpretations of quantum theory, can be used as the interpretational basis for such QP decision-making in geology, geophysics and petroleum projects design and management. This article is part of the themed issue ‘Second quantum revolution: foundational questions’.
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21

Reading, Anya M., Matthew J. Cracknell, Daniel J. Bombardieri, and Tim Chalke. "Combining Machine Learning and Geophysical Inversion for Applied Geophysics." ASEG Extended Abstracts 2015, no. 1 (December 2015): 1–5. http://dx.doi.org/10.1071/aseg2015ab070.

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22

Jongmans, Denis, and Stéphane Garambois. "Geophysical investigation of landslides : a review." Bulletin de la Société Géologique de France 178, no. 2 (March 1, 2007): 101–12. http://dx.doi.org/10.2113/gssgfbull.178.2.101.

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Abstract In the last two decades, shallow geophysics has considerably evolved with the emergence of 2D spatial imaging, then 3D spatial imaging and now 4D time and space imaging. These techniques allow the study of the spatial and temporal variations of geological structures. This paper aims at presenting a current state-of-the-art on the application of surface geophysical methods to landslide characterization and focuses on recent papers (after 1990) published in peer-reviewed international journals. Until recently, geophysical techniques have been relatively little used for the reconnaissance of landslides for at least two main reasons. The first one is that geophysical methods provide images in terms of physical parameters, which are not directly linked to the geological and mechanical properties required by geologists and engineers. The second reason shown through this study probably comes from a tendency among a part of the geophysicists to overestimate the quality and reliability of the results. This paper gave the opportunity to review recent applications of the main geophysical techniques to landslide characterisation, showing both their interest and their limits. We also emphasized the geophysical image characteristics (resolution, penetration depth), which have to be provided for assessing their reliability, as well as the absolute requirements to combine geophysical methods and to calibrate them with existing geological and geotechnical data. We hope that this paper will contribute to fill the gaps between communities and to strength of using appropriate geophysical methods for landslide investigation.
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23

Fenta, Mulugeta C., David K. Potter, and János Szanyi. "Fibre Optic Methods of Prospecting: A Comprehensive and Modern Branch of Geophysics." Surveys in Geophysics 42, no. 3 (March 9, 2021): 551–84. http://dx.doi.org/10.1007/s10712-021-09634-8.

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AbstractOver the past decades, the development of fibre optic cables, which pass light waves carrying data guided by total internal reflection, has led to advances in high-speed and long-distance communication, large data transmission, optical imaging, and sensing applications. Thus far, fibre optic sensors (FOSs) have primarily been employed in engineering, biomedicine, and basic sciences, with few reports of their usage in geophysics as point and distributed sensors. This work aimed at reviewing the studies on the use of FOSs in geophysical applications with their fundamental principles and technological improvements. FOSs based on Rayleigh, Brillouin, and Raman scatterings and fibre Bragg grating sensors are reviewed based on their sensing performance comprising sensing range, spatial resolution, and measurement parameters. The recent progress in applying distributed FOSs to detect acoustic, temperature, pressure, and strain changes, as either single or multiple parameters simultaneously on surface and borehole survey environments with their cable deployment techniques, has been systematically reviewed. Despite the development of fibre optic sensor technology and corresponding experimental reports of applications in geophysics, there have not been attempts to summarise and synthesise fibre optic methods for prospecting as a comprehensive and modern branch of geophysics. Therefore, this paper outlines the fibre optic prospecting methods, with an emphasis on their advantages, as a guide for the geophysical community. The potential of the new outlined fibre optic prospecting methods to revolutionise conventional geophysical approaches is discussed. Finally, the future challenges and limitations of the new prospecting methods for geophysical applications are elucidated.
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24

Matviyenko, S. A. "Conceptual Design of Geophysical Microsatellite." Science and innovation 10, no. 6 (November 30, 2014): 5–14. http://dx.doi.org/10.15407/scine10.06.005.

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25

Lenhardt, Wolfgang A. "The history of the Geophysical Service of Austria." History of Geo- and Space Sciences 12, no. 1 (January 15, 2021): 11–19. http://dx.doi.org/10.5194/hgss-12-11-2021.

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Abstract. A brief summary will be given of the historical development of Geophysical Service of Austria, which comprises the national geomagnetic, gravimetric and seismological services as well as the “Applied Geophysics Section” located at the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Vienna in Austria. The paper presents the achievements, changes and challenges of the Department from its modest beginning in 1851 until 2020. Finally, a special emphasis is placed on the Conrad Observatory – one of the most comprehensive geophysical research observatories in the world.
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Li, Yaoguo, Aline Melo, Cericia Martinez, and Jiajia Sun. "Geology differentiation: A new frontier in quantitative geophysical interpretation in mineral exploration." Leading Edge 38, no. 1 (January 2019): 60–66. http://dx.doi.org/10.1190/tle38010060.1.

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Geophysics aims to image subsurface geologic structure and identify different geologic units. While the former has dominated the interpretation of applied geophysical data, the latter has received much less attention. This appears to have persisted despite applications such as those in mineral exploration that inherently rely on the inference of geologic units from geophysical and geologic observations. In practice, such activities are routinely carried out in a qualitative manner. Thus, it is meaningful to examine this aspect and to develop a system of quantitative approaches to identify different geologic units. The development of geophysical inversions in the last three decades makes such interpretation tools possible. We refer to this newly emerging direction as geology differentiation and the resultant representation of geology model as a quasi-geology model. In this article, we will provide an overview of the historical background of geology differentiation and the current developments based on physical property inversions of geophysical data sets. We argue that integrating multiple physical property models to differentiate and characterize geologic units and work with the derived quasi-geology model may lead to a step change in maximizing the value of geophysical inversions.
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27

Mutton, Andrew J. "The application of geophysics during evaluation of the Century zinc deposit." GEOPHYSICS 65, no. 6 (November 2000): 1946–60. http://dx.doi.org/10.1190/1.1444878.

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During the period 1990 to 1995, experimental programs using high‐resolution geophysics at several Australian operating mines and advanced evaluation projects were undertaken. The primary aim of those programs was to investigate the application of geophysical technology to improving the precision and economics of the ore evaluation and extraction processes. Geophysical methods used for this purpose include: 1) borehole geophysical logging to characterize ore and rock properties more accurately for improved correlations between drill holes, quantification of resource quality, and geotechnical information. 2) imaging techniques between drill holes to map structure directly or to locate geotechnical problems ahead of mining. 3) high‐resolution surface methods to map ore contacts and variations in ore quality, or for geotechnical requirements. In particular, the use of geophysics during evaluation of the Century zinc deposit in northern Australia demonstrated the potential value of these methods to the problems of defining the lateral and vertical extent of ore, quantitative density determination, prediction of structure between drill holes, and geotechnical characterization of the deposit. An analysis of the potential benefit of using a combination of borehole geophysical logging and imaging suggested that a more precise structural evaluation of the deposit could be achieved at a cost of several million dollars less than the conventional evaluation approach based on analysis from diamond drill‐hole logging and interpolation alone. The use of geophysics for the Century evaluation also provided substance to the possibility of using systematic geophysical logging of blast holes as an integral part of the ore extraction process. Preliminary tests indicate that ore boundaries can be determined to a resolution of several centimeters, and ore grade can be estimated directly to a usable accuracy. Applying this approach routinely to production blast holes would yield potential benefits of millions of dollars annually through improved timeliness and accuracy of ore boundary and quality data, decreased dilution, and improved mill performance. Although the indications of substantial benefits resulting from the appropriate and timely use of geophysics at Rio Tinto’s mining operations are positive, some challenges remain. These relate largely to the appropriate integration of the technology with the mining process, and acceptance by the mine operators of the economic value of such work. Until the benefits are demonstrated clearly over time, the use of geophysics as a routine component of evaluation and mining is likely to remain at a low level.
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Capello, Maria A., Anna Shaughnessy, and Emer Caslin. "The Geophysical Sustainability Atlas: Mapping geophysics to the UN Sustainable Development Goals." Leading Edge 40, no. 1 (January 2021): 10–24. http://dx.doi.org/10.1190/tle40010010.1.

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Geophysics is enhanced if the value it adds to society, economic systems, and the environment is assessed, understood, and communicated. A clear value proposition can inspire new generations of scientists to pursue careers in geophysics and motivate current geophysicists to expand their activities and utilize their skills in ways that could enable their long-term employability or entrepreneurship. One way to position geophysics and geophysicists as value creators is to map geophysical applications and practices to the 17 Sustainable Development Goals (SDGs) adopted by the United Nations in 2015. A Geophysical Sustainability Atlas was developed to illustrate how geophysics contributes to each of the SDGs and to provide examples of specific applications and collaboration strategies. The atlas aims to facilitate an understanding of the value geophysics brings toward achieving each SDG, providing geophysicists and stakeholders with a sense of being frontline contributors in the pursuit of these objectives and, at the same time, providing a visualization of current and future opportunities related to the sustainability of our world and our profession.
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29

Donati, Jamieson C., and Apostolos Sarris. "Geophysical survey in Greece: recent developments, discoveries and future prospects." Archaeological Reports 62 (November 2016): 63–76. http://dx.doi.org/10.1017/s0570608416000065.

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Geophysics has emerged as a significant and primary tool of archaeological research in Greece. It is no longer marginalized to a supporting role for excavations and pedestrian surveying, but has developed into a fundamental method of investigating layers of cultural heritage in its own right. This can be explained varyingly, from the increasingly holistic nature of archaeological fieldwork, to a broader appreciation of the diverse applications of geophysics to characterize historical contexts, the unique range of site assessment offered by geophysics and the capacity of geophysics to explore the subsurface in challenging conditions. Technology too plays a vital role. New generations of equipment have the ability to map archaeological features in high resolution, in rapid sequence and oftentimes in 3D. Geophysics along with other non-invasive methods, like satellite and airborne remote sensing, has also gained wider traction because of concerns about the costs, impacts and time horizons of traditional fieldwork practices. This brief report highlights some of the recent developments and applications of geophysical survey in Greece. It is not meant to be an inclusive account or an evaluation of each geophysical technique; instead, it emphasizes current trends in this important and expanding field of research and touches upon its future prospects in the country.
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30

FUJII, Seishi. "Geophysical prospecting." RADIOISOTOPES 34, no. 2 (1985): 112–15. http://dx.doi.org/10.3769/radioisotopes.34.2_112.

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31

Lambeck, Kurt, and Duncan Carr Agnew. "Geophysical Geodesy." Physics Today 44, no. 1 (January 1991): 64–66. http://dx.doi.org/10.1063/1.2809960.

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32

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 1 (1985): 1. http://dx.doi.org/10.1029/eo066i001p00001-08.

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33

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 6 (1985): 49. http://dx.doi.org/10.1029/eo066i006p00049-05.

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34

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 10 (1985): 107. http://dx.doi.org/10.1029/eo066i010p00107-02.

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35

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 14 (1985): 153. http://dx.doi.org/10.1029/eo066i014p00153-07.

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36

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 19 (1985): 433. http://dx.doi.org/10.1029/eo066i019p00433-03.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 22 (1985): 466. http://dx.doi.org/10.1029/eo066i022p00466-03.

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38

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 27 (1985): 527. http://dx.doi.org/10.1029/eo066i027p00527-07.

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39

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 31 (1985): 570. http://dx.doi.org/10.1029/eo066i031p00570-01.

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40

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 36 (1985): 629. http://dx.doi.org/10.1029/eo066i036p00629-03.

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41

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 41 (1985): 701. http://dx.doi.org/10.1029/eo066i041p00701-04.

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42

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 46 (1985): 775. http://dx.doi.org/10.1029/eo066i046p00775-02.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 66, no. 52 (1985): 1356. http://dx.doi.org/10.1029/eo066i052p01356-03.

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44

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 1 (1986): 1. http://dx.doi.org/10.1029/eo067i001p00001-06.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 7 (1986): 79. http://dx.doi.org/10.1029/eo067i007p00079-01.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 9 (1986): 114. http://dx.doi.org/10.1029/eo067i009p00114-01.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 14 (1986): 181. http://dx.doi.org/10.1029/eo067i014p00181-02.

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48

Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 24 (1986): 524. http://dx.doi.org/10.1029/eo067i024p00524-06.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 26 (1986): 551. http://dx.doi.org/10.1029/eo067i026p00551-03.

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Anonymous. "Geophysical events." Eos, Transactions American Geophysical Union 67, no. 31 (1986): 606. http://dx.doi.org/10.1029/eo067i031p00606-02.

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