Results 21 to 30 of about 2,771 (227)

Estimation of glacier thicknesses and basal properties using the horizontal-to-vertical component spectral ratio (HVSR) technique from passive seismic data

Journal of Glaciology, 2017
Microtremor measurements and the horizontal-to-vertical spectral ratio (HVSR) technique, generally used for site effect studies as well as to determine the thickness of soft sedimentary layers, can effectively be ...
STEFANO PICOTTI, ROBERTO FRANCESE, MASSIMO GIORGI, FRANCO PETTENATI, JOSÉ M. CARCIONE   +4 more
doaj   +1 more source

Application of an Automatic Noise or Signal Removal Algorithm Based on Synchrosqueezed Continuous Wavelet Transform of Passive Surface Wave Imaging: A Case Study in Sichuan, China

Applied Sciences, 2021
Passive surface wave imaging based on noise cross-correlation has been a research hotspot in recent years. However, because randomness of noise is difficult to achieve in reality, prominent noise sources will inevitably affect the dispersion measurement.
Jie Fang, Guofeng Liu, Yu Liu
doaj   +1 more source

Surface-wave tomography for mineral exploration: a successful combination of passive and active data (Siilinjärvi phosphorus mine, Finland) [PDF]

Solid Earth, 2022
Surface wave (SW) methods offer promising options for an effective and sustainable development of seismic exploration, but they still remain under-exploited in hard rock sites.
C. Colombero, M. Papadopoulou, T. Kauti, P. Skyttä, E. Koivisto, M. Savolainen, L. V. Socco   +6 more
doaj   +1 more source

A semi-active control system in coupled buildings with base-isolation and magnetorheological dampers using an adaptive neuro-fuzzy inference system

Frontiers in Built Environment, 2022
Connecting two buildings has been proved as an effective method of structural control for alleviating seismic responses. Researchers have proposed that two adjacent buildings through supplemental energy dissipating devices to mitigate the buildings ...
Wei Chun Tai, Masahiro Ikenaga
doaj   +1 more source

Separation of Body and Surface Wave Background Noise and Passive Seismic Interferometry Based on Synchrosqueezed Continuous Wavelet Transform

Applied Sciences
Passive seismic interferometry is a technique that reconstructs virtual seismic records using ambient noise, such as random noise or microseisms. The ambient noise in passive seismic data contains rich information, with surface waves being useful for the
Xiaolong Li, Fengjiao Zhang, Zhuo Xu, Xiangbo Gong   +3 more
doaj   +1 more source

Monitoring Injected CO₂ Using Earthquake Waves Measured by Downhole Fibre-Optic Sensors: CO2CRC Otway Stage 3 Case Study

Sensors, 2022
Monitoring changes of formation properties along the well bore associated with the presence of carbon dioxide can be important for both tracking the plume inside of the primary containment and detecting leakage into the zone located above the reservoir ...
Pavel Shashkin, Boris Gurevich, Sinem Yavuz, Stanislav Glubokovskikh, Roman Pevzner   +4 more
doaj   +1 more source

Non-limit state seismic earth pressure solution for finite soil mass considering intermediate principal stress

Shenzhen Daxue xuebao. Ligong ban
To investigate the distribution law of non-limit state seismic passive earth pressure in a finite soil mass under the translational (T-mode) pattern of a rigid retaining wall, and to overcome the limitations of existing seismic earth pressure models that
ZHOU Tong, DONG Yacheng, SHAN Yao, ZHAO Yu, XIAO Yi   +4 more
doaj   +1 more source

Fleet’s Geode: A Breakthrough Sensor for Real-Time Ambient Seismic Noise Tomography over DtS-IoT

Sensors, 2022
As most of the outcropping and shallow mineral deposits have been found, new technology is imperative to finding the hidden critical mineral deposits required to transition to renewable energy.
Gerrit Olivier, Braeden Borg, Lawrence Trevor, Boris Combeau, Philippe Dales, Jonathan Gordon, Hemant Chaurasia, Matthew Pearson   +7 more
doaj   +1 more source

Passive Seismic Interferometry for Subsurface Imaging

, 2015
Seismic interferometry is a method that allows the retrieval of the seismic response at one receiver from a virtual source at the position of another receiver. The method was first proposed in the seismic exploration community by Claerbout (1968) for a horizontally layered subsurface.
Draganov, Deyan, Ruigrok, E.N.
openaire   +2 more sources

English teachers' journeys since the 2020 Iteration of Black Lives Matter

British Educational Research Journal, EarlyView.
Abstract The 2020 resurgence of Black Lives Matter (BLM) mobilised students in England to demand greater representation of racially minoritised voices in English curriculums—a call highlighted by stark inequity: just 1.5% of GCSE texts studied are by racially minoritised authors, despite racially minoritised students comprising 38.0% of the student ...
Adrian Fernandes
wiley   +1 more source