Results 71 to 80 of about 18,026,660 (230)

Stable and Unstable Phases of Elevated Seismic Activity at the Persistently Restless Telica Volcano, Nicaragua

open access: yes, 2015
Telica Volcano, Nicaragua, is a persistently restless volcano with daily seismicity rates that can vary by orders of magnitude without apparent connection to eruptive activity.
M. Rodgers   +6 more
semanticscholar   +1 more source

Seismic activity beneath the Nankai trough revealed by DONET ocean-bottom observations

open access: yesMarine Geophysical Research, 2014
We conducted a detailed investigation of seismic activity from January 2011 to February 2013 along the Nankai trough off the Kii Peninsula, central Japan, by using data obtained from the DONET ocean-bottom observation network.
M. Nakano   +3 more
semanticscholar   +1 more source

Photospheric and chromospheric magnetic activity of seismic solar analogs [PDF]

open access: yesAstronomy & Astrophysics, 2016
We identify a set of 18 solar analogs among the seismic sample of solar-like stars observed by the Kepler satellite rotating between 10 and 40 days.
D. Salabert   +10 more
semanticscholar   +1 more source

Advances in crosshole seismic reflection processing [PDF]

open access: yes, 1993
In recent years there have been significant advances in the acquisition and processing of crosshole seismic reflection data, and the method has been shown to be a high resolution imaging technique.
Rowbotham, Peter S
core  

Time Variation in the Chemical and Isotopic Composition of Fumarolic Gasses at Kusatsu-Shirane Volcano, Japan

open access: yesFrontiers in Earth Science, 2019
Minor seismicity may occur at volcanoes with hydrothermal system before a steam eruption. To forecast any steam eruption, it is indispensable to detect and understand the nature of this shallow seismicity. As the fumarolic gas resides in the hydrothermal
Takeshi Ohba   +6 more
doaj   +1 more source

Borehole seismic methods for opencast coal exploration [PDF]

open access: yes, 1990
Surface seismic techniques lack the resolution to image the top 100m or so of the earth's surface necessary for opencast coal exploration. The work reported in this thesis is the development of borehole seismic methods making use of the closely spaced ...
Kragh, J. Edward
core  

Interrelation of conductivity, seismic velocities and the seismicity for Central Tien Shan lithosphere

open access: yesЛитосфера, 2015
The work is devoted to investigation of the deep structure of the Central Tien Shan lithosphere. Comparative analysis of seismic tomography models and results of interpretation of magnetotelluric and magnetovariational soundings along “NARYN” (76°E ...
E. A. Bataleva   +2 more
doaj   +2 more sources

Update on monitoring of magnetic and electromagnetic tectonic signals in Central Italy

open access: yesAnnals of Geophysics, 2007
A network of three absolute magnetometer stations and the geomagnetic observatory of L’Aquila (42°23N, 13°19E) monitors possible seismo- or tectonomagnetic effects in Central Italy, using L’Aquila Observatory as a reference for differentiation.
P. Palangio   +4 more
doaj   +1 more source

Capturing the Uncertainty of Seismic Activity Rates in Probabilistic Seismic‐Hazard Assessments [PDF]

open access: yesBulletin of the Seismological Society of America, 2015
Abstract A new two‐step approach is proposed to quantify the uncertainties of the seismicity rate ν ( M ) estimated by Gutenberg–Richter (GR) relations of seismic area source zones in logic tree‐driven probabilistic seismic‐hazard analysis. The first step makes use of the possibility that the uncertainties of the GR parameters α and β (or a and
Stromeyer, D., Grünthal, G.
openaire   +3 more sources

Mathematical Modeling of Radon Transport in Geological Media: Classical and Non-Classical Approaches

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki
The article provides a review of mathematical models describing the diffusion-convective transport of radon (²²²Rn) in porous geological media within the framework of the emanation method.
Parovik, R.I.
doaj   +1 more source

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