Results 21 to 30 of about 1,468,576 (139)

Imaging of fast moving electron-density structures in the polar cap

Annals of Geophysics, 2007
The imaging of fast-moving electron-density structures in the polar cap presents a unique set of challenges that are not encountered in other ionospheric imaging problems.
C. N. Mitchell, P. S. J. Spencer
doaj   +1 more source

Tomographic Experiments for Defining the 3D Velocity Model of an Unstable Rock Slope to Support Microseismic Event Interpretation

Geosciences, 2020
To monitor the stability of a mountain slope in northern Italy, microseismic monitoring technique has been used since 2013. Locating microseismic events is a basic step of this technique.
Zhiyong Zhang, Diego Arosio, Azadeh Hojat, Luigi Zanzi   +3 more
doaj   +1 more source

Inverse melting and inverse freezing: a spin model [PDF]

, 2005
Systems of highly degenerate ordered or frozen state may exhibit inverse melting (reversible crystallization upon heating) or inverse freezing (reversible glass transition upon heating).
Schupper, Nurith, Shnerb, Nadav M.
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The existence of an inverse limit of inverse system of measure spaces - a purely measurable case [PDF]

, 2009
The existence of an inverse limit of an inverse system of (probability) measure spaces has been investigated since the very beginning of the birth of the modern probability theory.
A. Brandenburger, A. Heifetz, A. Heifetz, D. J. Mallory, H. Millington, J. F. Mertens, J. Harsányi, J. R. Choksi, M. Metivier, M. Pintér, M. Pintér, N. Bourbaki, R. J. Aumann   +12 more
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Methods to Invert Temperature Data and Heat Flow Data for Thermal Conductivity in Steady-State Conductive Regimes

Geosciences, 2019
Temperature and heat flow data carry specific information about the distribution of thermal conductivity variations which is not available in other geophysical data sets. Thus, thermal data constitute important complementary data sets in the multiphysics-
Wallace Anderson McAliley, Yaoguo Li
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Global Characterization of CO2 Column Retrievals from Shortwave-Infrared Satellite Observations of the Orbiting Carbon Observatory-2 Mission

Remote Sensing, 2011
The global characteristics of retrievals of the column-averaged CO2 dry air mole fraction, XCO2, from shortwave infrared observations has been studied using the expected measurement performance of the NASA Orbiting Carbon Observatory-2 (OCO-2) mission ...
Charles Miller, David Crisp, Brian Connor, David Baker, Hartmut Boesch   +4 more
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Inverse Transport Theory of Photoacoustics

, 2009
We consider the reconstruction of optical parameters in a domain of interest from photoacoustic data. Photoacoustic tomography (PAT) radiates high frequency electromagnetic waves into the domain and measures acoustic signals emitted by the resulting ...
Alexandre Jollivet, Ammari H, Bal G, Bal G, Bal G Uhlmann G, Bergh J, Choulli M, Cox B T, Dautray R, Guillaume Bal, McDowall S R Tamasan A Stefanov P, Patch S, Stefanov P, Vincent Jugnon   +13 more
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Inverse Spectral Theory for Sturm-Liouville Operators with Distributional Potentials [PDF]

, 2013
We discuss inverse spectral theory for singular differential operators on arbitrary intervals $(a,b) \subseteq \mathbb{R}$ associated with rather general differential expressions of the type \[\tau f = \frac{1}{r} \left(- \big(p[f' + s f]\big)' + s p[f' +
Eckhardt, Jonathan, Gesztesy, Fritz, Nichols, Roger, Teschl, Gerald   +3 more
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Agnostic geophysics

Annals of Geophysics, 1997
The physics of the Earth and the planets itself limits the knowledge that can be obtained of it. Two principle limitations are set in inverse problems and by chaotic dynamics; examples of each are given in this essay and some implications are discussed.
A. Cook
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Rare Event Probability Estimation for Groundwater Inverse Problems With a Two‐Stage Sequential Monte Carlo Approach

Water Resources Research
Bayesian inversions followed by estimations of rare event probabilities are often needed to analyze groundwater hazards. Instead of focusing on the posterior distribution of model parameters, the main interest lies then in the distribution of a specific ...
Lea Friedli, Niklas Linde
doaj   +1 more source