Geophysical methods

Part 1 of ebook "Non-destructive testing in civil engineering 2000" provides readers with contents including: maintenance of concrete structures and application of non-destructive inspection in Japan; nondestructive testing for steel bridges in Japan; research in non-destructive testing in civil engineering at BAM; non-destructive testing in the UK; high-resolution geophysical methods as NDT for civil engineering applications;...

315p tuongmothua 11-07-2024 2 1   Download

This article gives an overview of popular geophysical methods being applied in agriculture in several countries to characterize and monitor soil properties such as moisture, salinity, density, texture, structure, porosity, etc.

13p viwalton 02-07-2024 2 1   Download

Part 1 of ebook "Pile design and construction rules of thumb (Second edition)" includes the following main contents: Chapter 1 - Site investigation and soil conditions; Chapter 2 - Geophysical methods; Chapter 3 - Groundwater; Chapter 4 - Foundation types; Chapter 5 - Pile types; Chapter 6 - Selection of piles; Chapter 7 - Static and dynamic analysis; Chapter 8 - Design of driven piles; Chapter 9 - Design of bored piles;...

154p khuynhlinhnguyet1009 05-04-2024 3 1   Download

Ebook "Physical oceanography: A mathematical introduction with matlab®" is about the interplay between applied mathematics and the field of geophysical fluid dynamics. Its primary goals are to demonstrate how one uses the basic tenets of multivariate calculus to derive the governing equations of fluid dynamics in a rotating frame, and how one uses methods from linear algebra and partial differential equations to solve some of the basic initial-boundary value problems that have become the hallmark of physical oceanography.

454p duongthandue0501 28-02-2024 2 1   Download

Ebook "Achievements, history and challenges in geophysics: 60th anniversary of the institute of geophysics, polish academy of sciences" describes the most prominent achievements, the history of research and also the future potential of the Institute of Geophysics PAS. It describes measurements in various projects, methods of interpreting scientific data, and last but not least the people who have driven this research in many scientific projects.

419p duongthandue0501 28-02-2024 2 1   Download

Part 1 of ebook "Soil testing, soil stability and ground improvement: Proceedings of the 1st GeoMEast international congress and exhibition, Egypt 2017 on sustainable civil infrastructures" provides readers with contents including: study of slope stability (open pit mining, algeria); prediction of drained settlement and ultimate bearing capacity for stone columns supported foundation; considerations on the stiffness of sensitive soft soils; a novel field device for the measurement of soil collapsibility;...

203p thamnhuocgiai 24-09-2023 4 2   Download

In the Eastern Region of Mekong Delta (South Vietnam) may contain brackish or saline water from land surface to great depth, both superficial Quaternary and deep Tertiary Alluvium. The combination of two geophysical methods, the Vertical Electrical Sounding (VES) for shallow investigation, and the Magnetotelluric Sounding (MTS) for deep investigation, provides a complete electrical image of the sedimentary series from the surface to the deep crystalline basement.

14p vifalcon 18-05-2023 11 3   Download

Geophysical methods are effective tools for geotechnical analysis. In particular, the two-dimensional electrical resistivity method is widely applied in the determination of broken, cracked, and karst cave structures in many countries around the world. The information given by this method plays an important role in preventing and mitigating the risk of geological hazards caused by geological structures.

8p vicedric 08-02-2023 2 1   Download

In this paper next tasks for the dam investigation and the upper part of the section of its area were considered: probing of the construction state of the dam; characterization of the dam connection to the river banks; identification of possible tears in the proximity of a day surface; identification of possible soil state changes that are caused by technogenic-originating impact or geologic processes.

10p vipagani 24-10-2022 10 3   Download

The profile of deep magnetotelluric sounding (MT) from Duc Trong - Tuy Phong has been carried out in Lam Dong and Binh Thuan provinces. This paper presents the results of measurement, analysis and interpretation of the structural features of the Earth’s crust in the study area.

7p vipagani 24-10-2022 3 3   Download

The resistivity method in geophysics is used to solve various geological and engineering problems. Recently, this nondestructive method has been used on trees to investigate possible infections within the trunks by scanning resistivity variations. In this study, the electrical resistivity method has been aimed to be applied on various trees in Istanbul, Turkey to test whether the method applies to trees via regular resistivity measurement devices used in geophysics.

17p tanmocphong 29-01-2022 13 1   Download

It is essential to get information on clayey layers, which may play a significant role in protecting shallow aquifers thanks to their low hydraulic conductivity from surface contamination. One of the simple geophysical instruments is EM34 which applies the electromagnetic principle to read directly and quickly the apparent electrical conductivity of the subsurface.

6p vivacation2711 23-10-2021 18 1   Download

This paper deals with an experimental and numerical approach to adapt resistivity measurements, usually developed in geophysics, for the in-situ monitoring of moisture content in structural timber

6p vimante2711 05-03-2020 19 2   Download

In this paper, we have suggested a finite difference algorithm for resistivity forward and inverse modeling with electrically anisotropic media in applied geophysics. Electrical anisotropy affects the surface measurement in a fashion that may make interpretation erroneous.

15p viminotaur2711 30-10-2019 12 1   Download

The paper presents some results of the first experiment carried out by using a combination of geological, geochemical, geophysical methods, and temperature measurements in shallow drilling hole (depth 250 m) were applied for investigation in the Bang hot water spring area, Quang Binh province, during the period from 2012 to 2015.

14p meolep1 28-11-2018 21 1   Download

Using the analytic hierarchy process (AHP) method for multi-index evaluation has special advantages, while the use of geographic information systems (GIS) is suitable for spatial analysis. Combining AHP with GIS provides an effective approach for studies of mineral potential mapping evaluation. Selection of potential areas for exploration is a complex process in which many diverse criteria are to be considered.

12p anhnhoe11 12-04-2013 104 11   Download

Magnetotelluric surveys (soundings) are a naturalsource electromagnetic (EM) geophysical method that utilizes variations in the Earth’s magnetic field to image subsurface structures. A magnetotelluric sounding was attempted at Weyburn but has not produced results. Consequently, a final assessment of its utility is not available (Monea et al., 2008). Electrical resistance tomography (ERT) is a technique of imaging subsurface electrical conductivity. When deployed in time-lapse mode, it is capable of detecting conductivity changes caused by the injection of CO2.

134p bin_pham 06-02-2013 42 5   Download

Scale is a unifying concept that cuts across all natural and social sciences. At the same time, scaling is a common challenge in both basic and applied research. Accordingly, scale and scaling have become two of the most widely used buzzwords in ecology today. Over the past two decades, more than a dozen books and many more journal papers have been published on the problems of scale and scaling in ecology and geophysical sciences. These publications, as reviewed in the chapters of this book, have contributed significantly to our current understanding of scale issues.

366p phoebe75 01-02-2013 55 7   Download

Eastern Sea of Vietnam is the world's largest semi-open sea and is bounded by archipelagos, islands, mainland and connected partially with Pacific and Indian Ocean. Its total water surface area is about 2,974,600km2. Vietnamese and foreign geoscientists have researched, got samples and mapped the geological map of Eastern Sea since 1960s but no guidance or right method was carried out to map, especially in presenting geological units on geological map.

10p dem_thanh 22-12-2012 90 6   Download

Computational Fluid Dynamics, broadly encompassing fluid flows in engineering, atmospheric and ocean sciences, geophysics, physics and astrophysics, has seen calculations of great fidelity performed routinely that were only imagined at the inception of this conference series in 1989. These advances have not only been made with the available horsepower of increasingly more powerful parallel computers, but in tandem with advances in implementations of core and of entirely new algorithms, including multi-scale and adaptive methods....

0p bachduong1311 07-12-2012 54 1   Download