Results 31 to 40 of about 20,136 (219)

Investigating the spatial correlations in univariate random fields of peak ground velocity and peak ground displacement considering anisotropy

open access: yesGeoenvironmental Disasters, 2021
The results of seismic risk assessment of spatially distributed infrastructure systems are significantly influenced by spatial correlation of earthquake intensity measures (IM).
Morteza Abbasnejadfard   +2 more
doaj   +1 more source

Ataxic speech disorders and Parkinson’s disease diagnostics via stochastic embedding of empirical mode decomposition

open access: yesPLoS ONE, 2023
Medical diagnostic methods that utilise modalities of patient symptoms such as speech are increasingly being used for initial diagnostic purposes and monitoring disease state progression.
Marta Campi   +2 more
doaj   +2 more sources

On the Correct Use of Statistical Tests: Reply to "Lies, damned lies and statistics (in Geology)"

open access: yes, 2011
In a Forum published in EOS Transactions AGU (2009) entitled "Lies, damned lies and statistics (in Geology)", Vermeesch (2009) claims that "statistical significant is not the same as geological significant", in other words, statistical tests may be ...
Pisarenko, V., Sornette, D.
core   +1 more source

Pervasive Foreshock Activity Across Southern California

open access: yesGeophysical Research Letters, 2019
Foreshocks have been documented as preceding less than half of all mainshock earthquakes. These observations are difficult to reconcile with laboratory earthquake experiments and theoretical models of earthquake nucleation, which both suggest that ...
Daniel T. Trugman, Zachary E. Ross
doaj   +1 more source

Structured regularization based velocity structure estimation in local earthquake tomography for the adaptation to velocity discontinuities

open access: yesEarth, Planets and Space, 2022
We propose a local earthquake tomography method that applies a structured regularization technique to determine sharp changes in Earth’s seismic velocity structure using arrival time data of direct waves.
Yohta Yamanaka   +5 more
doaj   +1 more source

Research on Maximum Likelihood b Value and Confidence Limits Estimation in Doubly Truncated Apparent Frequency–Amplitude Distribution in Rock Acoustic Emission Tests

open access: yesMathematics, 2022
The b value deduced from the Gutenberg–Richter law is an important parameter for sequence and precursory analyses, both in laboratory acoustic emission tests and seismology.
Changgen Xia   +4 more
doaj   +1 more source

Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)

open access: yes, 2014
Global extreme ultraviolet (EUV) waves are spectacular traveling disturbances in the solar corona associated with energetic eruptions such as coronal mass ejections (CMEs) and flares.
Liu, Wei, Ofman, Leon
core   +1 more source

Earthquake Early Warning and Beyond: Systems Challenges in Smartphone-based Seismic Network

open access: yes, 2019
Earthquake Early Warning (EEW) systems can effectively reduce fatalities, injuries, and damages caused by earthquakes. Current EEW systems are mostly based on traditional seismic and geodetic networks, and exist only in a few countries due to the high ...
Allen R. M.   +3 more
core   +1 more source

Socioenvironmental implications of Jatropha curcas cultivation for biodiesel supply in postmining communities

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract The long‐term viability of Jatropha curcas as a biodiesel feedstock has been widely debated. Many early initiatives failed to deliver consistent economic returns despite promising environmental attributes. This study re‐evaluated J. curcas‐based systems within an integrated environmental–economic framework, focusing on their potential role in ...
Eduardo Sansão Sozinho Maurício   +3 more
wiley   +1 more source

Entropy, energy, and proximity to criticality in global earthquake populations [PDF]

open access: yes, 2002
We examine the question of proximity of the global earthquake population to the critical point characterised by the energy E and entropy S based on annual frequency data from the Harvard CMT catalogue.
Bak   +25 more
core   +1 more source

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