Article
Geosciences, Multidisciplinary
Hocine Henine, Julien Tournebize, Cedric Chaumont, Vivien Dubois, Remi Clement
Summary: This study evaluates a new methodology for detecting subsurface drainage (SD) networks using time-lapse electrical resistivity tomography (ERT) monitoring and high-pressure air injection. Experimental results show that high-pressure air injection instantly modifies soil electrical resistivity around drains, creating visible contrasts on ERT images.
JOURNAL OF APPLIED GEOPHYSICS
(2021)
Article
Engineering, Civil
Matthias Leopold, Conrad Gupanis-Broadway, Andy Baker, Stuart Hankin, Pauline Treble
Summary: This study validated a theoretical hydrological model of the karst critical zone by using time-lapse electric resistivity tomography (TL-ERT) to monitor the area above Golgotha Cave in Western Australia. The TL-ERT program identified previously unknown permanent water storages and fast hydrological flow pathways, confirming and extending the existing hydrogeological model. The resulting conceptual model showcased annual recharge patterns, preferential flow paths, and time lags between soil moisture saturation and seasonal connections in the karst system.
JOURNAL OF HYDROLOGY
(2021)
Article
Chemistry, Multidisciplinary
Alberto Godio, Fulvia Chiampo
Summary: This study investigates the geophysical monitoring of landfill leachate recirculation using electrical resistivity tomography (ERT). The results demonstrate the reliability of ERT in qualitatively detecting the impact of leachate circulation on the landfill volume.
APPLIED SCIENCES-BASEL
(2023)
Article
Geosciences, Multidisciplinary
Lu Ji, Colin MacBeth, Marie-Daphne Mangriotis
Summary: This paper provides a critical comparison of three different time-shift calculation techniques, which are applied to synthetic data sets and four sets of real time-lapse seismic data from three North Sea fields. Both qualitative and quantitative comparisons are performed, and the most suitable method is suggested for each data scenario.
MATHEMATICAL GEOSCIENCES
(2021)
Article
Engineering, Geological
Shiqiang Bian, Guan Chen, Runqiang Zeng, Xingmin Meng, Jiacheng Jin, Linxin Lin, Yi Zhang, Wei Shi
Summary: In this research, multiple remote sensing techniques and time-lapse ERT imaging were used to monitor the post-failure evolution of the Luojiapo landslide in Heifangtai. The study revealed pronounced temporal and spatial differences in deformation and hydrological evolution of landslides after sliding. The largest displacement rates occurred in the landslide source area, and the groundwater table showed significant changes in response to irrigation. Spatial differences in groundwater table evolution were identified as one of the main causes of landslide reactivation.
Article
Engineering, Manufacturing
Julian Heinisch, Yannik Lockner, Christian Hopmann
Summary: Different design of experiments strategies for injection molding process data are investigated, with 2(6-3) fractional factorial design and an inscribed central composite design found to be the most effective for modeling tasks.
JOURNAL OF MANUFACTURING PROCESSES
(2021)
Article
Geosciences, Multidisciplinary
Lige Bai, Zhijun Huo, Zhaofa Zeng, Hui Liu, Jiawei Tan, Tianqi Wang
Summary: Combining time-lapse electrical resistivity (ERT) and self-potential (SP) methods for monitoring groundwater flow provides a direct and reliable approach, with results matching well with in-situ hydrological data.
JOURNAL OF APPLIED GEOPHYSICS
(2021)
Article
Geosciences, Multidisciplinary
Rie Nakata, U-Geun Jang, David Lumley, Takuji Mouri, Masashi Nakatsukasa, Mamoru Takanashi, Ayato Kato
Summary: By utilizing innovative seismic monitoring techniques, we can effectively monitor the time-lapse changes in subsurface physical properties, which has significant applications in various fields.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Construction & Building Technology
Tarek Rakha, Yasser El Masri, Kaiwen Chen, Eleanna Panagoulia, Pieter De Wilde
Summary: This paper presents a novel workflow for characterizing and modeling defects in building envelopes using aerial time-lapse infrared data collection with drones. The point cloud data is translated into a CAD model and thermal zones, showcasing the potential of including detailed 4D data.
ENERGY AND BUILDINGS
(2022)
Article
Chemistry, Analytical
Luigi Zanzi, Marjan Izadi-Yazdanabadi, Saeed Karimi-Nasab, Diego Arosio, Azadeh Hojat
Summary: This study tests the feasibility of using time-lapse GPR measurements for quality control of repairing operations on marble blocks. The results show that GPR is an effective tool for analyzing fractures in marble before and after resin injections. An automatic algorithm was developed for rapid quantitative analysis.
Article
Geosciences, Multidisciplinary
Damien Delforge, Arnaud Watlet, Olivier Kaufmann, Michel Van Camp, Marnik Vanclooster
Summary: The study focused on the application of electrical resistivity tomography (ERT) using time-series clustering to detect geological or hydrological structures in the shallow subsurface. Results showed that different clustering algorithms provided similar spatial patterns on standardized data, but some clusters were spatially split with different geological units. Applying a spatial constraint in clustering of standardized data increased the number of clusters to retrieve spatially tied clusters.
JOURNAL OF APPLIED GEOPHYSICS
(2021)
Article
Geochemistry & Geophysics
Aristeidis Nivorlis, Matteo Rossi, Torleif Dahlin
Summary: This study presents a solution for long-term monitoring of DC resistivity and time-domain IP, including a monitoring system and software for automated data collection and processing. The proposed approach is effective in detecting subsurface changes, but has limitations in the absence of a priori information.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Physics, Applied
Li Zheng, Hiroyuki Matsuzaki, Takeyasu Yamagata
Summary: A self-constructed Geant4 Monte Carlo simulation has been developed to simulate time-of-flight (TOF) measurement for U-236 accelerator mass spectrometry. The results show good agreement between the simulation and experiment at two different thicknesses of carbon foil cases, indicating that the TOF detection system has ultrasensitivity in timing measurement.
APPLIED PHYSICS EXPRESS
(2022)
Article
Geochemistry & Geophysics
Alain Bonneville, Andrew J. Black, Jennifer L. Hare, Mark E. Kelley, Matthew Place, Neeraj Gupta
Summary: Three borehole gravity surveys were conducted in 2013, 2016, and 2018 to monitor the changes in gravity and density due to the injection and withdrawal of CO2 in the Dover 33 reef in Northern Michigan. The results showed consistent changes in CO2 mass within the reservoir over time, with increasing mass from 2013 to 2016 and decreasing mass from 2016 to 2018. By coupling time-lapse BHG results with a 3D porosity and permeability model, fluid migration within the reef was visualized and allowed for evaluating the volume of CO2 injected and the efficiency of oil sweeping.
Article
Polymer Science
Ch. Hopmann, C. E. Kahve, M. Schmitz, M. Roebig
Summary: High precision, warpage free injection molded parts are highly in demand, and a mold with 18 individually controllable tempering zones has been developed to address the warpage issue. Experimental trials show that the model predictive control approach (MPC) is more precise than the PID control approach for superior control accuracy.
