Results 101 to 110 of about 19,474 (278)
Statistical Features of the Seismic Noise-Field [PDF]
, 2007 We present a preliminary study of the dependence of the statistical features of the soil motion due to seismic noise on the near-surface geology in the frequency range from 1 Hz to ~ 40 Hz.
De Michelis, P. +5 more
core +1 more source
Dragonfly functional connectivity responses are dynamic relative to drought
Insect Conservation and Diversity, EarlyView.During drought, dragonfly species richness decreases. Yet, dragonfly assemblages show a higher propensity for dispersal during drought. Dispersal pathways vary among the wet and dry periods, and relative to temporal changes in the landscape. While some dragonfly species can traverse plantation compartments, conservation corridors facilitate functional ...
Charl Deacon +2 more
wiley +1 more source
Synchronizing seismic networks with ambient noise [PDF]
Geophysical Journal International, 2008 SUMMARY The technique of retrieving Green’s functions by pairwise correlation of a random wavefield is used to estimate the stability of the timing system of a seismic network. The method is demonstrated with data from a network consisting of stations with four independent clocks and GPS-receivers.
openaire +3 more sources
A geophysical investigation of the Roter Kamm impact crater, Namibia
Meteoritics &Planetary Science, EarlyView.Abstract The Roter Kamm impact crater is located in the southern Namib Desert. The crater has a diameter of 2.5 km and belongs to the category of simple, bowl‐shaped impact craters, with an elevated rim of fractured target rock. The crater's interior is completely buried beneath sediments, preventing extensive surface investigations of the bedrock ...
Hannah Nienhaus +6 more
wiley +1 more source
Attenuation and velocity structure in the area of Pozzuoli-Solfatara (Campi Flegrei, Italy) for the estimate of local site response [PDF]
, 2006 In the present work I infer the 1D shear-wave velocity model in the volcanic area of Pozzuoli-Solfatara using the dispersion properties of both Rayleigh waves generated by artificial explosions and microtremor.
Petrosino, S., Petrosino, Simona
core
Confirming the impact origin of the São Miguel do Tapuio structure, northeastern Brazil
Meteoritics &Planetary Science, EarlyView.Abstract The São Miguel do Tapuio structure (SMT) is a remarkable, nearcircular feature of about 21 km diameter, centered at 5°37.6′ S, 41°23.3′ W in Piauí state, northeastern Brazil. The structure is located within the sedimentary strata of the Paleozoic–Mesozoic Parnaíba Basin and predominantly comprises sandstones of the Devonian Pimenteiras and ...
Alvaro Penteado Crósta +9 more
wiley +1 more source
Seismic data processing with curvelets: a multiscale and nonlinear approach. [PDF]
, 2007 In this abstract, we present a nonlinear curvelet-based sparsity promoting formulation of a seismic processing flow, consisting of the following steps: seismic data regularization and the restoration of migration amplitudes.
Hennenfent, Gilles +3 more
core +2 more sources
Meteoritics &Planetary Science, EarlyView.Abstract We investigated the structural framework of the north–northwestern Paraná Basin in Brazil to test whether the pre‐impact structures in this region may have had any influence on the first‐order formation and morphostructure of the Araguainha impact structure (AIS).
Renato B. Bernardes +5 more
wiley +1 more source
Temporal changes in anthropogenic seismic noise levels associated with economic and leisure activities during the COVID-19 pandemic [PDF]
Sci Rep, 2021 Nimiya H, Ikeda T, Tsuji T.
europepmc +2 more sources
Extracting Stable Seismic Core Phases from Ambient Seismic Noise [PDF]
, 2016 Ambient seismic-noise correlation is a powerful tool for extracting the seismic core phases that propagate through the interior of the Earth. In this study, we present and refine the root-mean-square-stacking method to extract stable core phases (e.g ...
Shomali, Zaher-Hossein,, Shirzad, Taghi,
core +1 more source