Chuandong Jiang

Chuandong Jiang
Jilin University | JUT · College of Instrumentation Science and Electrical Engineering

Doctor of Engineering

About

65
Publications
9,376
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
400
Citations
Additional affiliations
September 2016 - present
Jilin University
Position
  • Professor (Associate)
August 2016 - May 2018
Leibniz Institute for Applied Geophysics
Position
  • Research Assistant
July 2013 - September 2016
Jilin University
Position
  • Lecturer
Education
September 2009 - June 2013
Jilin University
Field of study
  • Instrumentation

Publications

Publications (65)
Article
Full-text available
Surface nuclear magnetic resonance (surface-NMR) is a promising technique for exploring shallow subsurface aquifer structures. Surface-NMR can be applied in environments that are characterized as a 1-D layered Earth. The technique utilizes a single loop and is referred to as magnetic resonance sounding. The technique referred to as magnetic resonan...
Article
Full-text available
Surface nuclear magnetic resonance is a valuable technique that provides insight into the distribution of water content and relaxation time, thus revealing hydraulic properties in the subsurface. Recent research has introduced a new measurement layout that allows for time-efficient imaging of the 2D parameter distribution. Furthermore, for 1D inves...
Article
Magnetic resonance tomography (MRT) is a technique that is used in the 2-D or 3-D detection and imaging of subsurface water-bearing structures based on the principle of surface nuclear magnetic resonance. Currently, the research and application of 3-D MRT is still limited by low measurement efficiency and image resolution. In this paper, a new loop...
Article
Full-text available
Geophysical methods can characterize aquifer systems non-invasively and are particularly helpful to image the complex depositional structure of the subsurface.Among these, ground-penetrating radar (GPR) is an effective tool for detailed investigations of shallow subsurface geometry, but provides only limited information on hydraulic properties.Magn...
Article
Surface nuclear magnetic resonance (sNMR) can directly and quantitatively detect groundwater, but its application in urban environments faces problems, such as low signal-to-noise ratios (SNRs) and difficulties in laying the coils. This study presents a rotational sNMR measurement scheme to accurately image a frozen urban lake. Through synthetic da...
Article
Magnetic-resonance sounding (MRS) is a direct, quantitative, accurate and efficient technology that has been applied in the fields of groundwater detection, regional water-resource investigation and geological-disaster-risk early warning. However, owing to strong environmental noise, the signal-to-noise ratio (SNR) of data collected by MRS instrume...
Article
Full-text available
The Hunshandake Sandy Land (HSL) is a well-known water-rich sandy region in China that is home to many lakes. Most of these lakes are sustained by groundwater inflow. However, due to the limited hydrogeological survey data, the mechanism by which the lakes interact with groundwater is not well understood. Magnetic resonance sounding (MRS) is a geop...
Article
In tunnel construction, to prevent the occurrence of water inrush, the geological conditions of faults and underground rivers must be determined in advance. As a direct detection method of groundwater, magnetic resonance sounding (MRS) has been applied for the advanced detection of water-related hazards in tunnels and mines recently. However, the r...
Article
Full-text available
Magnetic resonance sounding (MRS) has been applied to underground constructions, such as tunnels and mines, to detect and forewarn groundwater sources hidden in front of the mine face, also named disaster water sources. Disaster water sources are mostly found in 2-D or 3-D structures; as such, their spatial distribution characteristics are difficul...
Article
Based on surface magnetic resonance sounding (MRS), a relationship is proposed to express the MRS response signal with a vertical coil for the MRS method for a whole underground space model. Firstly, the declination and inclination characteristics of the Earth's magnetic field and the coil normal angle are studied by deriving the angle rotation mat...
Article
In surface nuclear magnetic resonance, we use the geomagnetic field as the background field and excite hydrogen protons in groundwater by emitting an alternating current with a frequency equal to the Larmor frequency. However, in practical, inhomogeneous geomagnetic field (IGF) or magnetic anomaly caused by ferromagnetic materials will make the non...
Article
Full-text available
Surface and underground nuclear magnetic resonance (UNMR) method has the advantage of direct and quantitative detection of groundwater and has been widely used in water resource survey and advance detection of water sources causing disaster in underground space. However, the UNMR signal is extremely weak in tunnels or mines. The signal-to-noise rat...
Article
Full-text available
Magnetic resonance sounding (MRS) is a geophysical method that directly detects, evaluates, and monitors groundwater resource. The amplitude of the MRS signal detected by the instrument is on the order of nanovolts, resulting in very sensitive to environmental noise and power line harmonics. The singular value decomposition (SVD) method separates t...
Article
Surface nuclear magnetic resonance (surface NMR) is a geophysical technique for direct and quantitative detection of underground water sources. In recent years, with the application of lightweight instruments in tunnels and mines, coils with small dimensions and multi-turn have been used for surface NMR. Increasing the coil turns increases the indu...
Data
Field data of MRS collected by JLMRS-Array instrument in Taipingchi Reservoir, Changchun City of China.
Data
Field data after DSVD process
Article
Full-text available
The Ground-source Airborne Time-domain Electromagnetic (GATEM) method is an efficient electromagnetic prospecting technique for engineering, geological surveying and mineral exploration. The electromagnetic response and inversion are obtained via the electrical conductivity of the geological medium, which is conventionally characterized by a homoge...
Article
The magnetic resonance sounding (MRS) method can noninvasively, directly, and quantitatively detect groundwater and forecast the potential for a water-induced disaster during tunnel construction. However, due to the spatial limitations of underground engineering, the signal-to-noise ratio (SNR) of the receiving signal is low (<1), which severely li...
Article
The Dadushan Tunnel, which is located in the southwestern karst region of China in Guizhou Province, is one of the key elements of the Hukun High-Speed Railway. Cavities occur unpredictably in the tunnel, and well-developed karst conduits are frequently encountered. These features result in safety problems, such as water gushing and rapid flooding....
Article
Full-text available
Surface nuclear magnetic resonance (SNMR) data typically suffer from very low signal-tonoise ratio. Two of the main sources of noise that generate low signal-to-noise ratios are powerlines and railways that create harmonic noise. Some noise cancellation strategies for mitigating this harmonic noise have been presented. However, when the frequency o...
Article
Full-text available
Underground construction projects such as tunnel construction are at high risk of water-induced disasters. Because this type of disaster poses a serious threat to worker safety and productivity, instruments and methods that can accurately detect the water source are critical. In this study, a water detection instrument that combines Magnetic Resona...
Article
As the surface nuclear magnetic resonance signal (SNMR) is a multi-exponential decay wave in multi-porous aquifer, there are serious problems of signal distortion and information loss by conventional blind source signal extraction and mono-exponential fitting method. In this paper, we propose a method to extract multi-exponential SNMR signals from...
Article
Advanced detection of underground hazardous water in mines or tunnels is a new application field of the magnetic resonance sounding (MRS) method, as well as a new challenge in geophysics. In this paper, on the theoretical basis of the surface MRS method, a model of underground MRS of whole space is constructed, and the expression of MRS signal with...
Article
A new method for detecting risk of tunnel water-induced disasters using magnetic resonance sounding (MRS) is proposed in this letter. The method utilizes magnetic resonance signals that are generated directly from hydrogen protons to achieve the purpose of detecting risk of tunnel water-induced disasters directly and quantitatively. This letter eva...
Article
Full-text available
Magnetic resonance sounding (MRS) is a novel geophysical method to detect groundwater directly. By applying this method to underground projects in mines and tunnels, warning information can be provided on water bodies that are hidden in front prior to excavation and thus reduce the risk of casualties and accidents. However, unlike its application t...
Article
During the excavation of underground tunnels and ore mining, accidents related to sudden water inflows often occur. As the only technique used for the direct detection of groundwater, nuclear magnetic resonance (NMR) has advantages for the detection of disaster-inducing water flows. However, NMR has commonly been applied only at the ground surface...
Article
Magnetic Resonance Sounding (MRS) is a non-invasive geophysical technique providing the ability to quantitatively and directly detect the aquifer properties, which is commonly used in groundwater survey, hydrological assessment and advanced detection of a water source that may cause disastrous accident in the underground engineering. In field appli...
Article
As a new groundwater exploration method, noninvasive surface nuclear magnetic resonance (SNMR) has the benefits of direct, quantitative and uniqueness estimation of water content and relaxation time (T2*) in the near surface groundwater exploration. In practice, the earth magnetic field is difficult to be determined accurately, due to its inhomogen...
Article
Full-text available
Due to its unique sensitivity to hydrogen protons, magnetic resonance sounding (MRS) is the only geophysical method that directly detects water and can provide nondestructive information on subsurface aquifer properties. The relationship between the surface MRS signal and the location and characteristics of aquifers using large-coil (typically 50–1...
Conference Paper
Full-text available
Magnetic resonance tomography using elongated transmitter and in-loop receiver arrays (MRTetra) is designed to efficiently image the groundwater in two-dimensional. However, due to resolution limitations and the volume effect, the structure and boundary features of the aquifer are ambiguous. We make use of the GPR reflection data to generate struct...
Article
Full-text available
Magnetic resonance sounding (MRS) using the Earth’s magnetic field is a noninvasive and on-site geophysical technique providing quantitative characteristics of aquifers in the subsurface. When the MRS technology is applied in a mine or tunnel for advance detecting the source of water that may cause disastrous accident, spatial constraints limit the...
Article
Full-text available
Nano-volt magnetic resonance sounding (MRS) signals are sufficiently weak so that during the actual measurement, they are affected by environmental electromagnetic noise, leading to inaccuracy of the extracted characteristic parameters and hindering effective inverse interpretation. Considering the complexity and non-homogeneous spatial distributio...
Article
Full-text available
The water content of underground structures can be imaged using surface nuclear magnetic resonance (NMR) in one dimension, two dimensions, or recently, three dimensions. The maximum efficiency can be obtained with a coincident loop configuration in a large-scale area, although the resolution is limited. We have developed a quasi-2D block inversion...
Article
Full-text available
The technology of low-field nuclear magnetic resonance (LF-NMR) is commonly used in food, agriculture, energy and chemical sectors due to its non-destructive, non-invasive, in situ, green and other advantages. Recently, this technology played an increasingly large role in the field of food-safety supervision especially. In oil product quality testi...
Article
An optimized Block inversion method is proposed in order to satisfy the high accuracy requirement of the aquifer boundary with Magnetic Resonance Sounding (MRS). The priori information is established from the derivative result of the Smooth inversion, which provides the smooth distribution of the water content. Based on the Tikhonov regularized inv...
Article
Full-text available
Surface nuclear magnetic resonance (surface NMR) has up to now rarely been applied to 3D subsurface modeling. Inversion approaches currently in use are smooth inversion techniques that are not useful for identifying sharp geologic boundaries. Although they are already computationally expensive, the resulting models are restricted to imaging the sub...
Article
Magnetic Resonance Sounding (MRS) signal is extremely easy corrupted by the noise, especially by the harmonic noise and spike noise. Harmonic noise cancellation is often based on remote references and the adaptive noise cancellation(ANC)algorithm to increase the signal-to-noise ratio (SNR). However, ANC algorithm cannot play an effective role when...
Article
Least Square Weighted Smoothing Filter (LSW-SF) method is used to filter Magnetic Resonance Sound (MRS) signals, which is compared with the moving average filter method. Results of a large number of simulation experiments show the following characteristics. First, the more accurate characteristic parameters of MRS can be obtained using the LSW-SF m...
Article
To meet the accuracy requirement of surface three-dimensional (3D) Magnetic Resonance Spectroscopy (MRS) forward modeling. Hammer integration algorithm was proposed based on unstructured non-uniform tetrahedral mesh. First, finite element method was used to calculate the 3D magnetic field in the subsurface, and the sensitivity kernel expression was...
Article
Full-text available
The technique of surface NMR has been applied to image 1D, 2D and recently 3D subsurface structures. Although limited resolution is reported for imaging deep 3D structures using a coincident loop configuration, high resolution is obtained for shallow 2D structures by including separated loop configurations. We adapt the concept of separated transmi...
Article
Full-text available
Surface nuclear magnetic resonance is a geophysical method designed for direct groundwater exploration, but its applications for conducting research on contamination analysis in the vadose zone are limited due to instrumental dead time. To address this challenge, we have modeled and simulated the phenomenon and impact of the transmitter loop discha...
Article
Magnetic Resonance Sounding (MRS) has received much attention of geophysicists due to its qualitative and quantitative features in detection of groundwater. In traditional studies, people are limited to one-dimensional of instruments and interpretation methods based on layering aquifer models, which makes well location difficult in complex geologic...
Article
Full-text available
Surface Magnetic Resonance Sounding (SMRS) has emerged as a new geophysical technique which allows detecting the abundant degree of hydrogen nucleus in the subsurface directly on the surface. It has been widely used, not only in groundwater exploration and evaluation, but also in water-induced disasters (disasters caused by groundwater, such as dam...
Article
The method of Magnetic Resonance Sounding (MRS) provides a new technology to determine subsurface water qualitatively and quantitatively, which has received much concern of geophysicists. The traditional inversion of MRS uses homogeneous half-space models and ignores effects of resistivity distribution on inversion results. Based on the MRS theory...
Article
Full-text available
The amplitude and relaxation time T2 of magnetic resonance sounding (MRS) signal are directly related with water content and pore size of aquifers. Average T2, denoted by T2*, is often used to describe the decay characteristic of MRS signal. However, in the case of porous media rock, pore size should be described by T2 spectrum of MRS signal. To ob...
Article
Smooth inversion and block inversion are two main methods for surface magnetic resonance sounding (MRS) at present, which can construct water content and average effective pore size of aquifer through initial amplitudes and mean relaxation times, respectively. However, these inversion methods are limited in porous geological environment and in some...
Conference Paper
Full-text available
The traditional interpretation scheme of Magnetic Resonance Sounding (MRS) used to limit to the homogeneous half-space and regardless of the resistivity in the inversion, in turn resulting in the ambiguous aquifer boundaries. Based on the MRS theory in the multi-layer earth model, we developed a new scheme for joint inversion of MRS data and Transi...
Article
Full-text available
The receiving signal of Magnetic Resonance Sounding (MRS) is mainly influenced by the transfer characteristic of detection coil, which can be significantly affected as the transfer characteristic plays an important role. After review of the recent studies around the world, the assessment method of transfer characteristic for receiver coil is propos...
Conference Paper
Full-text available
We present a new loop configuration provides high subsurface resolution for Magnetic Resonance Tomography (MRT) by only one measurement. Model resolution matrix and radius are analyzed based on singular value de composition (SVD) of the MRT kernels including regularization. We take two shapes of the transmitter loop, square and rectangle, and two c...
Article
Full-text available
Nuclear magnetic resonance (NMR) has emerged as a new geophysical technique allowing direct, noninvasive groundwater investigations from the surface.. Comparing to the traditional geophysical methods, the current state-of-the-art NMR method is higher resolution, more efficiency, more information and unique interpretation for hydrogeological investi...
Article
Full-text available
To detect the hidden leakage problem of a dam body accurately, a new geophysical method, magnetic resonance sounding (MRS), is introduced, which can directly detect water molecules and quantitatively measure them. The basic principle and inversion method of MRS is research to determine the coil type and measurement mode for dam leakage problem. Fie...
Article
Magnetic Resonance Sounding (MRS) is a geophysical method designed for direct groundwater exploration. Initially, MRS was developed for characterizing horizontally stratified aquifers. However, for the 2D/3D target whose size may be much smaller than the loop, the accuracy and the lateral resolution may not be sufficient. In this paper, possibility...
Article
Full-text available
Traditionally, one of the major limitations for magnetic resonance sounding (MRS) measurement is that the weak signal generated by subsurface water molecules is prone to be disturbed by highlevel electromagnetic noise. In China, the power grid coverage is 94.6% and spiky noise and power-line harmonic noise are always present when utilizing MRS meas...
Article
Magnetic Resonance Sounding (MRS) equipment for groundwater exploration has high receiving sensitivity, and it is vulnerably affected by high-level power-line harmonic when worked near the city and village. In order to effectively extract the weak signal, variable step-size LMS algorithm in frequency domain is studied to eliminate noise based on th...
Article
The existing Magnetic Resonance Sounding (MRS) system for groundwater exploration can detect the deep groundwater, transmit a high power, and hold a large size and weight. Due to the conditions of transportation and instrument preparation time, the work efficiency of the existing system has not obvious advantage to detect the widespread shallow gro...
Article
Full-text available
The magnetic resonance sounding(MRS) method is a non-invasive and most direct geophysical method for the groundwater. The envelop free induction decay(FID) signal of MRS includes the key parameters for detecting underground water. Based on the switch orthogonal vector lock-in amplifier principle and the trigonometric function specificity, the FID s...
Article
A new method for 2D groundwater tomography using Magnetic Resonance Sounding (MRS) with distributed array loops is described and the exciting field of the surface transmitter and the response from the spin magnetic field to the receivers are numerical calculated. To assess the effective effort in subsurface structure resolution by the use of 2D MRS...
Article
MRS (magnetic resonance sounding)) method is a direct method for underground water detecting which is easily disturbed by interferences according to its weak signal (nV). Time domain quantization methods require a good suppression of interferences for more accurate MRS signal parameter estimation. Of all interferences, power line harmonic interfere...

Network

Cited By

Projects

Projects (2)
Archived project
Project goal is to image the water-bearing structure in the shallow subsurface using the surface Nuclear Magnetic Resonance (NMR) or Magnetic Resonance Tomography (MRT) in 2D and 3D. The research includes the development of surface NMR instrument, data process, modelling and inversion.