Results 31 to 40 of about 24,679 (283)

Seismological structure of the 1.8 Ga Trans-Hudson Orogen of North America [PDF]

, 2016
Precambrian tectonic processes are debated: what was the nature and scale of orogenic events on the younger, hotter, and more ductile Earth? Northern Hudson Bay records the Paleoproterozoic collision between the Western Churchill and Superior plates—the ∼
Abbott, Acton, Agius, Ammon, Amy Gilligan, Baird, Bao, Bastow, Bastow, Berman, Berman, Breemen, Bédard, Caldwell, Christensen, Corrigan, Corrigan, Darbyshire, Darbyshire, Darbyshire, Eaton, Eaton, Ekström, Fiona A. Darbyshire, Flament, Garth, Gibb, Gilligan, Hartlaub, Hartlaub, Herrmann, Hoffman, Ian D. Bastow, Jones, Kennett, Kgaswane, Kind, Leech, Ligorría, Nelson, Nunn, Nábělek, Pawlak, Pawlak, Porritt, Rai, Rapine, Rey, Schneider, Schulte-Pelkum, Snyder, Snyder, St-Onge, St-Onge, St-Onge, Thompson, Thompson, Tugume, Wessel, Zegers, Zhang, Zhu, Özalaybey   +62 more
core   +1 more source

Conditioning bounds for traveltime tomography in layered media [PDF]

, 2011
This paper revisits the problem of recovering a smooth, isotropic, layered wave speed profile from surface traveltime information. While it is classic knowledge that the diving (refracted) rays classically determine the wave speed in a weakly well-posed ...
Abramowitz M, Aki K, Bal G, Bateman H, Collar A R, DeVore R, Grenander U, H Baek, Herglotz G, Knutson A, L Demanet, Leung S, Shearer P, Shohat J, Simon B, Stefanov P, Stork C, Whitham G B, Wiechert E   +18 more
core   +3 more sources

Site survey and assessment for the planned seismogeodynamic monitoring network in the Republic of Armenia

Earthquake Science, 2022
We present results of a detailed analysis of data obtained from seismic geodynamic field studies conducted at proposed sites for the development of advanced seismic monitoring stations in the Republic of Armenia.
Jon Karapetyan, Li Li, Eduard Geodakyan, Songyong Yuan, Roza Karapetyan   +4 more
doaj   +1 more source

Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]

, 2005
Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Curtis, A., Trampert, J., van Vossen, R.
core   +1 more source

The tailings dam failure of 5 November 2015 in SE Brazil and its preceding seismic sequence

Geophysical Research Letters, 2016
The collapse of a mine tailings dam and subsequent flood in SE Brazil on 5 November 2015 was preceded by a small‐magnitude seismic sequence. In this report, we explore the spatiotemporal associations between the seismic events and the accident and ...
H. Agurto‐Detzel, M. Bianchi, M. Assumpção, M. Schimmel, B. Collaço, C. Ciardelli, J. R. Barbosa, J. Calhau   +7 more
doaj   +1 more source

Methodology and Results of Detailed 3D Seismic Exploration in the Zhezkazgan Ore District

Applied Sciences
This article presents the results obtained from a high-resolution wide-azimuthal 3D seismic reflection method used for the prediction and detailed exploration of complex ore targets in the Zhezkazgan ore district of Central Kazakhstan. We demonstrate the
Arman Sirazhev, Sara Istekova, Dina Tolybaeva, Kuanysh Togizov, Raushan Temirkhanova   +4 more
doaj   +1 more source

Study of Response Spectra for Ulaanbaatar city

Proceedings of the Mongolian Academy of Sciences, 2022
According to researchers, Ulaanbaatar, the capital city of Mongolia, is in an active seismic zone, and more active faults around the city have been discovered in the last few decades.
Munkhsaikhan Amarsanaa, Odonbaatar Chimed, Dembereldulam Munkhjargal, Ganzorig Erdene   +3 more
doaj   +1 more source

Microelectromechanical system gravimeters as a new tool for gravity imaging [PDF]

, 2018
A microelectromechanical system (MEMS) gravimeter has been manufactured with a sensitivity of 40 ppb in an integration time of 1 s. This sensor has been used to measure the Earth tides: the elastic deformation of the globe due to tidal forces.
Bramsiepe, Steven G., Douglas, Rebecca, Hammond, Giles D., Hild, Stefan, Hough, James, Middlemiss, Richard P., Paul, Douglas J., Rowan, Sheila, Samarelli, Antonio   +8 more
core   +1 more source

A Seismological and Geophysical Database of Kos Island: 10 Years of Digital Records [PDF]

Earth, 2021
A ten-year complete seismological database is evaluated in the present work. These data are provided for events with magnitude ML ≥ 1.0, which have occurred in Eastern Greece and, more specifically, in Kos Island. Several selection criteria are applied and, hence, a catalog of the seismological records is compiled.
openaire   +2 more sources

Seasonal and spatial variations in the ocean-coupled ambient wavefield of the Ross Ice Shelf [PDF]

, 2019
© The Author(s), 2019. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Baker, M. G., Aster, R. C., Anthony, R. E., Chaput, J., Wiens, D. A., Nyblade, A., Bromirski, P.
Anthony, Robert E., Aster, Richard C., Baker, Michael G., Bromirski, Peter D., Chaput, Julien, Gerstoft, Peter, Nyblade, Andrew A., Stephen, Ralph A., Wiens, Douglas A.   +8 more
core   +1 more source