Results 41 to 50 of about 67,700 (324)

Appraisal of seismic noise scenario at national seismological network of India in COVID-19 lockdown situation

open access: yesGeomatics, Natural Hazards & Risk, 2020
We evaluated seismic background noise at national network in India using PSD, Fourier spectra, Spectrogram, and HVSR approach, before and during the nationwide lockdown declared due to COVID-19 pandemic.
Ajeet P. Pandey   +4 more
doaj   +1 more source

Coronal magnetic field measurement using loop oscillations observed by Hinode/EIS [PDF]

open access: yes, 2008
We report the first spectroscopic detection of a kink MHD oscillation of a solar coronal structure by the Extreme-Ultraviolet Imaging Spectrometer (EIS) on the Japanese Hinode satellite. The detected oscillation has an amplitude of 1 kms−1 in the Doppler
Andries   +32 more
core   +2 more sources

Models of the macroseismic field earthquakes and their influence on seismic hazard assessment values for Central Asia

open access: yesГеодинамика и тектонофизика, 2020
Seismic intensity assessment in points of a macroseismic scale plays an important role for researching the seismic history of areas characterized by active seismicity, as well as for construction (and updating) of seismic zoning maps in various scales ...
T. U. Artikov   +3 more
doaj   +1 more source

Observations of apparent superslow wave propagation in solar prominences [PDF]

open access: yes, 2017
Phase mixing of standing continuum Alfv\'en waves and/or continuum slow waves in atmospheric magnetic structures such as coronal arcades can create the apparent effect of a wave propagating across the magnetic field.
Baes, M.   +3 more
core   +3 more sources

Planetary Seismology

open access: yes, 2007
In-situ extraterrestrial seismic measurements have, to date, been limited to data collected during the lunar Apollo missions. These data have provided significant contributions to our understanding of the interior structure of the Moon, and by inference, permissible thermal and mineralogical models.
Lognonné, Philippe, Johnson, C.
openaire   +4 more sources

Overview of geothermal resource exploration and development in North Africa

open access: yesDeep Underground Science and Engineering, EarlyView.
This article reviews geothermal exploration in North Africa, highlighting key activities, government policies, and exploration findings across Mauritania, Morocco, Algeria, Tunisia, Libya, and Egypt. The region's substantial geothermal potential, driven by tectonic activity, positions it to play a significant role in the global geothermal energy ...
Meryem Redouane
wiley   +1 more source

A statistical investigation of pre-earthquake ionospheric TEC anomalies

open access: yesGeodesy and Geodynamics, 2011
Previous researches show that the total electron content (TEC) in the ionospheric exhibits anomalous disturbances a few days or hours prior to earthquakes.
Zhu Fuying, Wu Yun, Zhou Yiyan, Lin Jian
doaj   +1 more source

Seismology [PDF]

open access: yesThe Geographical Journal, 1912
n ...
openaire   +1 more source

Optimal Seismic Design of High‐Rise Buildings With Outrigger Tuned Inertial Mass Damper

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This paper presents a novel optimization method for designing a system with a tuned inertial mass electromagnetic transducer (TIMET) damped outrigger (DO) for high‐rise buildings subjected to earthquakes. The DO system consists of the TIMET devices, which attach vertically between the outrigger and the perimeter columns.
Yanay Abrass, Oren Lavan
wiley   +1 more source

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