Subjects -> EARTH SCIENCES (Total: 771 journals)
    - EARTH SCIENCES (527 journals)
    - GEOLOGY (94 journals)
    - GEOPHYSICS (33 journals)
    - HYDROLOGY (29 journals)
    - OCEANOGRAPHY (88 journals)

GEOPHYSICS (33 journals)

Showing 1 - 31 of 31 Journals sorted alphabetically
Acta Geologica Polonica     Open Access  
Artificial Intelligence in Geosciences     Open Access   (Followers: 6)
Chinese Journal of Geophysics     Full-text available via subscription   (Followers: 1)
Contributions to Geophysics and Geodesy     Open Access   (Followers: 1)
Energy Geoscience     Open Access  
Eos, Transactions American Geophysical Union     Open Access   (Followers: 5)
Geodesy and Cartography     Open Access   (Followers: 2)
Geodesy and Cartography : The Journal of Committee on Geodesy of Polish Academy of Sciences     Open Access   (Followers: 2)
Geodesy and Geodynamics     Open Access  
GeofĂ­sica internacional     Open Access  
Geology, Geophysics and Environment     Open Access   (Followers: 2)
GEOMATICA     Hybrid Journal  
Geomechanics and Geophysics for Geo-Energy and Geo-Resources     Hybrid Journal  
Geophysical Research Letters     Full-text available via subscription   (Followers: 167)
GeoScience Engineering     Open Access  
Geothermal Energy     Open Access   (Followers: 5)
GIScience & Remote Sensing     Open Access   (Followers: 53)
Greenhouse Gases : Science and Technology     Hybrid Journal   (Followers: 4)
Interpretation     Hybrid Journal   (Followers: 1)
Journal of Earth Sciences and Geotechnical Engineering     Open Access   (Followers: 4)
Journal of Environmental & Engineering Geophysics     Hybrid Journal   (Followers: 2)
Journal of Remote Sensing & GIS     Full-text available via subscription   (Followers: 37)
Journal of the Earth and Space Physics     Open Access   (Followers: 9)
Near Surface Geophysics     Open Access  
New Zealand Journal of Geology and Geophysics     Hybrid Journal   (Followers: 6)
NRIAG Journal of Astronomy and Geophysics     Open Access   (Followers: 5)
Physics and Chemistry of the Earth, Parts A/B/C     Hybrid Journal   (Followers: 10)
Research in Geophysics     Open Access   (Followers: 5)
Results in Geophysical Sciences     Open Access  
Reviews of Geophysics     Full-text available via subscription   (Followers: 48)
Transportation Geotechnics     Full-text available via subscription   (Followers: 1)
Similar Journals
Journal Cover
Journal of Environmental & Engineering Geophysics
Journal Prestige (SJR): 0.406
Citation Impact (citeScore): 1
Number of Followers: 2  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 1083-1363 - ISSN (Online) 1943-2658
Published by GeoScienceWorld Homepage  [17 journals]
  • Author Biographies

    • Free pre-print version: Loading...

      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • The Deserted Manor of Noer, Schleswig-Holstein, Germany. Geophysical
           Prospection Methods in Comparison

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      Authors: Costard L; Wunderlich T, Grüneberg-Wehner K, et al.
      Abstract: ABSTRACTManors are an important component of the cultural-economic history of Northern Germany and Southern Scandinavia. We present the results of a geophysical prospection that led to the identification of a previously unknown manor near the village of Noer, Schleswig-Holstein, Northern Germany. Although magnetic gradiometry provides a fast way to cover large areas, it does not provide accurate depth estimates, is affected by magnetic blanking and is unable to detect differences in water content. Therefore, we applied a combination of different geophysical methods to optimize the non-invasive reconstruction of the target and its surroundings not only with respect to building structures but also in relation to the surrounding landscape. In particular, a combination of magnetics, ground-penetrating radar (GPR), electromagnetic induction (EMI), electrical resistivity tomography (ERT), and soil samples were carried out to determine: (1) the object's exact location; (2) the building structure and state of preservation; and (3) any additional structures in the surrounding area.We detected a tripartite building of 22 by 27 m, with several inner walls, which was located underneath a topographic high on the surveyed field. The bulk structure is identifiable most clearly in the magnetic and EMI inphase component maps. GPR profiles and soil samples indicate flooring or foundations in part of the building. Their shallow depths of less than 2 m below the surface and debris clusters close to the surface indicate at least partial demolition. A surrounding wall was found about 5 m outside the building. The area in between shows no magnetic anomalies, lower resistivities in EMI and ERT, and low GPR reflection amplitudes. Soil samples suggest a moat or other water feature.Archaeological artifacts found at the location characterize the building as a 16th to 17th century brick manor. Other objects, like a suspected farmyard and access path could not be found. A comparison with historical sources suggest that the mansion is in relation to the manor Grönwohld. After a change of the owner it was degraded to a Meierhof, and subsequently the building decayed and was forgotten.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • Multi-Method Geophysical Mapping of a Geothermal Reservoir and Buried
           Channel in Langfang, Northern Part of China

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      Authors: Tian B; Lei X, Jiang H, et al.
      Abstract: ABSTRACTGeothermal resources are a clean and renewable energy source that can play a critical role in drastically reducing air pollution. The utilization of geothermal resources requires technical support to decrease the developing risk by applying an integrated interpretation of geophysical methods. In this study, we used geophysical methods in the Langfang region of China to design a workflow for the safe yield of geothermal resources. To do so, we conducted controlled-source audio-frequency magnetotelluric (CSAMT) soundings, shallow soil temperature surveys, radon gas measurements, and the microtremor survey method (MSM) at the geothermal exploration and development site. These geophysical analyses identified a geothermal reservoir and a buried channel in the region. The dominant fault developing in the area was identified as the best channel for heat and water based on the developed geothermal wells. In areas with relatively little geothermal exploration, this study provides a reference and demonstration for geothermal development.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • 3D Modeling of Time-domain AEM Fields with IP Effect in Complex Media with
           Topography

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      Authors: Persova MG; Soloveichik YG, Vagin DV, et al.
      Abstract: ABSTRACTWe present two approaches to solving the airborne electromagnetic (AEM) problems given the induced polarization (IP) effect: with calculating the field in a polarizable medium directly in the time domain (TD) and with calculating the EM+IP field in the frequency domain (FD) followed by a transition to the time domain. The first approach is based on calculating the field at each time step given the sources that depend on the currents excited in the medium at previous time steps. This approach allows us to use any IP decay functions. The frequency domain approach is based on the Fourier series expansion of a non-stationary source and the Cole-Cole model. In order to reduce the computational cost, we use the Hermite spline interpolation. Both approaches allow modeling EM + IP processes in complex media with topography and the curved boundaries of layers containing 3D heterogeneities. 3D modeling is performed on non-conforming hexahedral meshes generated fully automatically. The analysis of computational efficiency and verification of the developed approaches are presented in comparison with the results from other researchers. Moreover, we compare the results obtained in the time and frequency domains. The results of 3D modeling the IP effects, which are obtained for some geoelectrical models typical for AEM exploration problems, are demonstrated.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • Geophysical Assessment of Freshwater Intrusion into Saline Aquifers
           Beneath Plain Reservoirs

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      Authors: Hu Z; Liu M, Wang Y, et al.
      Abstract: ABSTRACTReservoir leakage can cause a waste of precious water resources and even severe environmental consequences. In this study, we use continuous resistivity profiling to evaluate the leakage problem of the Shuangwangcheng reservoir along the east route of the South-to-North Water Diversion Project. A numerical example was first built to validate the method's effectiveness in a saline aquifer environment. Thirty-five waterborne survey lines were then conducted with a total length of 74 km, and two ground survey lines had a length of 1.27 km each. We evaluated the quality of the overall data with the apparent resistivity of intersection points. Based on ground survey results, the resistivity value larger than 2 Ω.m at the bottom of the reservoir is regarded as leakage areas. Therefore, we divide resistivity survey results into three zones: freshwater reservoir, leakage zone, and saline aquifer. The distribution of freshwater intrusion is evaluated by fence diagram and interpolated horizontal resistivity contour maps. The delineated leakage zone is consistent with the lack of a low permeable loam layer on the north and east parts of the reservoir. The results prove that the waterborne resistivity survey method can efficiently and effectively assess leakage distribution inside a reservoir.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • Standoff High-Frequency Electromagnetic Induction Response of Unsaturated
           Sands: A Tank-Scale Feasibility Study

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      Authors: Glaser DR; Shubitidze F, Barrowes BE.
      Abstract: ABSTRACTStandoff electromagnetic induction (EMI) measurements of complex conductivity and complex permittivity for engineering soil properties have the potential to revolutionize the way the US Army handles route planning and infrastructure assessment. An unmanned aerial system (UAS) based EM platform for soil interrogation would have wide reaching impact in a variety of applications including: civil infrastructure inspection, in-theater ingress and egress routing, reduction of false positives in IED detection, and permafrost mapping, among many others. Traditional frequency domain EMI instruments assess conductivity at low-frequencies, generally in the range of 1–20 kHz; however, recent advancements have resulted in instrumentation targeting a broadband range of frequencies, from 10 kHz through 20 MHz. This advancement, known as high-frequency electromagnetic induction (HFEMI) allows the potential to evaluate frequency domain relaxation effects in soils by acquiring both the in phase and quadrature response of the secondary field from the soil. Relaxation phenomena such as induced polarization and dielectric permittivity are related to important soil properties that can potentially be exploited using this HFEMI system. While conductivity measurements using the quadrature component of the EMI response are well established in EMI instrumentation, understanding of the relationship between direct electrical measurements and standoff HFEMI measurements is lacking. In an effort to illuminate this relationship between various electrical and electromagnetic methods at a scale suitable for soil property estimation, we perform side-by-side measurements using galvanic geoelectrical methods (ERT, IP), electromagnetics, time-domain reflectometry (TDR) and ground penetrating radar (GPR). We compare HFEMI obtained quadrature and in-phase responses to ERT, IP, TDR and GPR measurements. A tank-scale test cell was developed for comparison of the above methods and allowed assessment of sand at varying saturation levels. Further, the HFEMI response at varying heights above the sand surface was also assessed. Qualitative observations are reported in an initial attempt to relate the HFEMI response to important soil parameters.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
  • Editors' Foreword

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      Authors: Varnavina A; Aghayan A.
      PubDate: Thu, 21 Apr 2022 00:00:00 GMT
       
 
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