Results 21 to 30 of about 1,653,781 (183)

Using Deep Learning for Flexible and Scalable Earthquake Forecasting

open access: yesGeophysical Research Letters, 2023
Seismology is witnessing explosive growth in the diversity and scale of earthquake catalogs. A key motivation for this community effort is that more data should translate into better earthquake forecasts. Such improvements are yet to be seen.
Kelian Dascher‐Cousineau   +3 more
doaj   +1 more source

Imaging disturbance zones ahead of a tunnel by elastic full-waveform inversion: Adjoint gradient based inversion vs. parameter space reduction using a level-set method

open access: yesUnderground Space, 2018
We present and compare two flexible and effective methodologies to predict disturbance zones ahead of underground tunnels by using elastic full-waveform inversion.
Andre Lamert   +3 more
doaj   +1 more source

A Python framework for efficient use of pre-computed Green's functions in seismological and other physical forward and inverse source problems [PDF]

open access: yesSolid Earth, 2019
The finite physical source problem is usually studied with the concept of volume and time integrals over Green's functions (GFs), representing delta-impulse solutions to the governing partial differential field equations.
S. Heimann   +10 more
doaj   +1 more source

Chromospheric seismology above sunspot umbrae [PDF]

open access: yes, 2015
Context: The acoustic resonator is an important model for explaining the three-minute oscillations in the chromosphere above sunspot umbrae. The steep temperature gradients at the photosphere and transition region provide the cavity for the acoustic ...
G. J. J. Botha   +5 more
core   +1 more source

Analysis of datum-instability effect on calculated results of data from Longmen Mountain regional gravity network

open access: yesGeodesy and Geodynamics, 2011
A statistical correlation method is used to study the effect of instability of the calculation datum (used in traditional method of indirect adjustment) on calculated gravity results, using data recorded by Long-men Mountain regional gravity network ...
Sun Shaoan, Zhou Xin
doaj   +1 more source

Estimation of seismic impacts under conditions of permafrost degradation

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2022
Permafrost is widespread in Russia in many mining and oil regions. Some of these areas are located in zones of high seismic activity. In connection with global climate change and possible degradation of permafrost, it is necessary to study the seismic ...
Trifonov B.A.   +2 more
doaj   +1 more source

STanford EArthquake Dataset (STEAD): A Global Data Set of Seismic Signals for AI

open access: yesIEEE Access, 2019
Seismology is a data rich and data-driven science. Application of machine learning for gaining new insights from seismic data is a rapidly evolving sub-field of seismology.
S. Mostafa Mousavi   +3 more
doaj   +1 more source

Front Matter

open access: yesGeophysical Monograph Series, Page i-xiv., 2020

This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.

Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions

Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
wiley  

+1 more source

ScS shear-wave splitting in the lowermost mantle: Practical challenges and new global measurements

open access: yesSeismica
Many regions of the Earth's mantle are seismically anisotropic, including portions of the lowermost mantle, which may indicate deformation due to convective flow.
Jonathan Wolf, Maureen D. Long
doaj   +1 more source

Fully probabilistic seismic source inversion – Part 1: Efficient parameterisation [PDF]

open access: yesSolid Earth, 2014
Seismic source inversion is a non-linear problem in seismology where not just the earthquake parameters themselves but also estimates of their uncertainties are of great practical importance.
S. C. Stähler, K. Sigloch
doaj   +1 more source

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