Results 151 to 160 of about 1,208 (208)
Efficient Tensor Completion Algorithms for Highly Oscillatory Operators
Numerical Linear Algebra with Applications, Volume 33, Issue 4, August 2026.ABSTRACT We address the problem of recovering highly oscillatory operators, represented as nĂ—n$$ n\times n $$ matrices with a fixed set of observed entries. Given that these matrices can be well compressed by butterfly matrix decomposition of L=đť’Ş(logn) levels requiring only O(nlogn)$$ O\left(n\log n\right) $$ degrees of freedom, we propose a novel ...
Navjot Singh +3 more
wiley +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
Application of seismic tomography to induced seismicity investigations
Proceedings of Rock Mechanics in Petroleum Engineering, 1994Abstract Two case studies are presented, which highlight the potential application of seismic velocity imaging to induced seismicity investigations. Velocity images may be produced using data currently recorded with seismic monitoring arrays.
S. C. Maxwell, R. P. Young
openaire +1 more source
Joint Seismic and Electrical Tomography
Symposium on the Application of Geophysics to Engineering and Environmental Problems 1997, 1997Seismic and electrical properties in the earth are not directly associated with each other. If a large seismic velocity contrast occurs across a geological interface, certain change of the corresponding electrical properties may also take place, but not necessarily.
Jie Zhang, F. Dale Morgan
openaire +1 more source
Geophysics, 1989
Abstract Many tomographic interpretations of crosshole seismic traveltimes have approximated the raypaths with straight lines connecting the source and receiver. This approximation is valid where the velocity does not vary greatly, but in many regions of interest velocity variations of 10-20 percent or more are observed, causing ...
N. D. Bregman +2 more
openaire +2 more sources
Abstract Many tomographic interpretations of crosshole seismic traveltimes have approximated the raypaths with straight lines connecting the source and receiver. This approximation is valid where the velocity does not vary greatly, but in many regions of interest velocity variations of 10-20 percent or more are observed, causing ...
N. D. Bregman +2 more
openaire +2 more sources
Seismic Tomography of Macedonia
2020<p>A novel geotomography technique has been applied in and around Macedonia using selected earthquakes that occurred over a period of 40 years and were recorded on 47 seismograph stations. The aim was to test this new tomography method for the first time in investigation of the crustal shape and structures in that specific ...
Cvetan Sinadinovski +3 more
openaire +1 more source
Seismic tomography of the Moon
Science Bulletin, 2008We attempted to determine the first three-dimensional P and S wave velocity and Poisson’s ratio structures of the lunar crust and mantle down to 1000 km depth under the near-side of the Moon by applying seismic tomography to the moonquake arrival-time data recorded by the Apollo seismic network operated during 1969 to 1977.
DaPeng Zhao, JianShe Lei, Lucy Liu
openaire +1 more source
Seismic Tomography Of The Earth'S Mantle
Annual Review of Earth and Planetary Sciences, 1991The analysis of information contained in seismograms is the most promis ing tool for retrieving the three-dimensional structure of the Earth's mantle and thereby improving our understanding of its dynamics. The procedure through which three-dimensional images of different parts of the Earth's interior arc obtained by inversion of a set of observables ...
openaire +1 more source
Global seismic tomography: the inverse problem and beyond
Inverse Problems, 1998Global seismic tomography has produced a great amount of robust information concerning the three-dimensional extent of the Earth's internal structure. This has stimulated a multidisciplinary discussion aimed at understanding the mechanisms which govern the internal evolution of our planet.
openaire +3 more sources
Fundamentals of Seismic Tomography
1994We define tomography as an imaging technique which generates a cross-sectional picture (a tomogram) of an object by utilizing the object's response to the nondestructive, probing energy of an external source. Seismic tomography makes use of sources that generate seismic waves which probe a geological target of interest.
Tien-when Lo, Philip L. Inderwiesen
openaire +1 more source
A Breviary of Seismic Tomography
2008This is the first textbook to cover the essential aspects of the topic at a level accessible to students. While focusing on applications in solid earth geophysics, the book also includes excursions into helioseismology, thereby highlighting the strong affinity between the two fields. The book provides a comprehensive introduction to seismic tomography,
openaire +3 more sources