Pure and Applied Geophysics
Papers 8174
1 page of 818 pages (8,174 results)
#1F. R. Castro (UFPR: Federal University of Paraná)H-Index: 1
#2Saulo P. Oliveira (UFPR: Federal University of Paraná)H-Index: 9
Last. Francisco José Fonseca Ferreira (UFPR: Federal University of Paraná)H-Index: 9
view all 4 authors...
Local phase filters as the tilt derivative (TDR) and the horizontal tilt derivative (TDX) are extensively used to interpret magnetic data. We use two combinations of these filters, namely TDR − TDX and TDR + TDX, to design a constraining mask that guides the Euler deconvolution moving data window. The TDR − TDX filter produces sharp peaks over the centers of the sources, while the TDR + TDX filter generates plateaus over them. Motivated by previous approaches that make use of the Laplacian filte...
#1Ying Jiang (CMA: China Meteorological Administration)
#2Nan Zhang (CMA: China Meteorological Administration)
Last. Jing Yang (CMA: China Meteorological Administration)
view all 6 authors...
Fog-induced highway roadblocks (access restrictions and traffic congestion) include not only the influence of fog conditions on traffic capacities but also human factors and traffic conditions that affect highway traffic. They directly reflect the combined effects of weather conditions, traffic conditions, and human factors on the flow of traffic. This work systematically studies the characteristics and causes of fog-blocked events in China and finds that the annual total mileage of highways in ...
#1Mauricio Fuentes (University of Chile)H-Index: 6
#2Francisco Uribe (University of Chile)
Last. Jaime Campos (University of Chile)H-Index: 23
view all 4 authors...
There are only a few analytical 2+1D models for tsunami propagation, most of which treat tsunami generation from a static deformation field isolated from the kinematics of the rupture. This work examines the behavior of tsunami propagation in a simple setup including a source time function which accounts for a time description of the rupture process on the tsunami source. An analytical solution is derived in the wavenumber domain, which is quickly inverted to space with the fast Fourier transfor...
#1Bin Hu (JLU: Jilin University)H-Index: 1
#2Deli Wang (JLU: Jilin University)H-Index: 8
Last. Rui Wang (JLU: Jilin University)
view all 3 authors...
Passive seismic source imaging can extract geophysical information from underground noise and has been widely utilized in geophysical research. Compared with conventional active seismic exploration, it is low-cost and eco-friendly; however, the application of passive seismic data is limited by coherent noise in the virtual-shot gathers. An approach involving direct denoising in the virtual-shot gathers has not previously been discussed; therefore, we present an iterative denoising strategy for p...
#1Sujata Pattanayak (National Centre for Medium Range Weather Forecasting)
#2V. S. Prasad (National Centre for Medium Range Weather Forecasting)H-Index: 4
view all 2 authors...
With the modernization of the India Meteorological Department, the observational network of the country, both in situ and remote sensing, is enhanced. The Doppler Weather Radar (DWR) network is improved, and the National Centre for Medium Range Weather Forecasting is acquiring radar data from 20 stations all over the country. The maximum utilization of DWR observations in the numerical models remains a challenging task. This study represents the first assessment of assimilation of radial wind ob...
#1Young Seok Song (Hanyang University)H-Index: 6
#2Ki Young Kim (Kangwon National University)H-Index: 7
Last. R. M. RenéH-Index: 3
view all 4 authors...
To understand steeply dipping events in seismic reflection interferometry (SRI), we derived an expression that describes the difference in travel time (Δτ) from a diffractor to two receivers in two dimensions. For a fixed receiver interval, the expression shows that Δτ is zero when the diffractor is at the midpoint of the paired receivers, increases with an apparent velocity of half the medium velocity as the diffractor moves toward either receiver, and remains constant for a diffractor located ...
#1J. Kuśmierczyk-Michulec (Comprehensive Nuclear-Test-Ban Treaty Organization)
#2Paulina Bittner (Comprehensive Nuclear-Test-Ban Treaty Organization)H-Index: 1
Last. Martin Kalinowski (Comprehensive Nuclear-Test-Ban Treaty Organization)H-Index: 13
view all 4 authors...
To demonstrate a synergy between radionuclide (RN) and infrasound observations and Atmospheric Transport Modelling (ATM), the volcanic activity of Bogoslof in Alaska, USA, is used as an example. The study period covers 3 months of intense eruptive activity, from 19 December 2016 to 8 March 2017. During that period, the International Monitoring System (IMS) infrasound station located in Alaska, USA, recorded signals from three eruptive sequences. The second sequence was reported in the Internatio...
#1E. O. Onyebueke (University of the Witwatersrand)H-Index: 1
#2Raymond Durrheim (University of the Witwatersrand)H-Index: 20
view all 6 authors...
An integrated geophysical approach using seismics and geoelectrical techniques was employed to investigate the architecture of historic narrow-reef workings and a proposed open-pit mine at Lancaster Gold Mine, near Krugersdorp, South Africa. The mining activities in the area were mainly carried out within the Kimberley Reef Package in the upper Central Rand Group of the Witwatersrand Supergroup, which hosts several gold-bearing conglomerates (locally known as reefs). The reefs are generally thin...
Top fields of study
Magnitude (mathematics)
Induced seismicity
Atmospheric sciences