Results 41 to 50 of about 24,679 (283)

Dynamic inverse problem in a weakly laterally inhomogeneous medium [PDF]

open access: yes, 2005
An inverse problem of wave propagation into a weakly laterally inhomogeneous medium occupying a half-space is considered in the acoustic approximation. The half-space consists of an upper layer and a semi-infinite bottom separated with an interface.
Blagovestchenskii, A. S.   +2 more
core   +2 more sources

In for a penny: An empirical study of earthquake experience and non‐pharmaceutical intervention effectiveness in the Marche region

open access: yesAnnals of Public and Cooperative Economics, EarlyView.
Abstract This study investigates whether prior exposure to natural disasters influenced individual compliance with non‐pharmaceutical interventions (NPIs), specifically lockdown measures, during the Corona Virus Infectious Disease 2019 (COVID‐19) pandemic. Focusing on the Marche region of Italy, which experienced a severe earthquake in 2016, we exploit
Vincenzo Alfano   +2 more
wiley   +1 more source

Seismic wave propagation in icy ocean worlds

open access: yes, 2017
Seismology was developed on Earth and shaped our model of the Earth's interior over the 20th century. With the exception of the Philae lander, all in situ extraterrestrial seismological effort to date was limited to other terrestrial planets. All have in
Kedar, Sharon   +6 more
core   +1 more source

Expected seismicity and the seismic noise environment of Europa [PDF]

open access: yes, 2017
Seismic data will be a vital geophysical constraint on internal structure of Europa if we land instruments on the surface. Quantifying expected seismic activity on Europa both in terms of large, recognizable signals and ambient background noise is ...
Huang, Hsin-Hua   +7 more
core   +3 more sources

Giant Porphyry Copper Deposits Caused by a Slab Jamming in the Mantle Transition Zone

open access: yesTerra Nova, EarlyView.
ABSTRACT Two giant porphyry copper deposits in the Southern Central Andes formed during the Miocene–Pliocene transition when a bend in the subducting Juan de Fernández hotspot chain jammed in the mantle transition zone, causing mega‐scale slab‐kinking. This geometry implies mechanical resistance that caused East–West compression and eventually a thrust‐
Nipaporn Nakrong   +5 more
wiley   +1 more source

Production of a homogeneous seismic catalog based on machine learning for northeast Egypt

open access: yesOpen Geosciences, 2021
This research presents a new approach which addresses the conversion of earthquake magnitude as a supervised machine-learning problem through a multistage approach.
Moustafa Sayed S. R.   +2 more
doaj   +1 more source

Unique continuation of the normal operator of the x-ray transform and applications in geophysics [PDF]

open access: yesInverse Problems, 2019
We show that the normal operator of the x-ray transform in Rd, d ≥ 2, has a unique continuation property in the class of compactly supported distributions.
Joonas Ilmavirta, Keijo Mönkkönen
semanticscholar   +1 more source

Linking Stress Drop and Slip Heterogeneity to Assess Source Rupture Directivity for Earthquakes in Central Italy

open access: yesTerra Nova, EarlyView.
ABSTRACT In this study, we examine the relationship between Brune stress drop and fault slip where the stress drop is estimated using the Empirical Green's Function (EGF) method and slip distribution is derived from seismic and geodetic data inversion.
Calderoni Giovanna   +2 more
wiley   +1 more source

2D Tomographic Maps of Rayleigh and Love Waves for Armenia and Its Surrounding Areas

open access: yesRussian Journal of Earth Sciences
This study aims to provide 2D tomography images of surface wave group velocity in Armenia and its neighboring regions within the Eurasian-Arabic plates, aiming to enhance the understanding of the shear velocity structure in the area.
Abrehdari Seyed Hossein   +3 more
doaj   +1 more source

PROLOGUE

open access: yesAnnals of Geophysics, 2016
In 1989 the first bases of what is now a strong and consolidated Spanish-Italian scientific relationship in Seismology and in Volcano-Seismology were established.
José Morales, Giuseppe Puglisi
doaj   +1 more source

Home - About - Disclaimer - Privacy