scholarly journals Modal wavenumber extraction by finite difference vertical linear array data

2021 ◽  
Vol 1 (12) ◽  
pp. 126002
Author(s):  
Xiaolei Li ◽  
Pengyu Wang
Keyword(s):  
Finite Difference ◽  
Linear Array ◽  
Array Data

scholarly journals Dispersion estimation from linear array data in the time-frequency plane

2005 ◽  
Vol 53 (10) ◽  
pp. 3738-3748 ◽  
Author(s):  
A. Roueff ◽  
J.I. Mars ◽  
J. Chanussot ◽  
H. Pedersen
Keyword(s):  
Linear Array ◽  
Array Data ◽  
Time Frequency

scholarly journals High resolution tomography of the Tanlu fault zone near Hefei with passive seismic and magnetotelluric linear array data

2021 ◽  
Vol 34 (1) ◽  
pp. 1-12
Author(s):  
Jian Xu ◽  
◽  
Kangdong Wang ◽  
Junlun Li ◽  
Ning Gu ◽  
...  
Keyword(s):  
High Resolution ◽  
Fault Zone ◽  
Linear Array ◽  
Array Data ◽  
Tanlu Fault Zone ◽  
Tanlu Fault ◽  
Passive Seismic

Linear array data gathering for microearthquake observation: Survey of mid-crustal reflectors

1993 ◽  
Vol 20 (5) ◽  
pp. 411-414 ◽  
Author(s):  
K. Katsumata ◽  
S. Tsukada ◽  
I. Ogino ◽  
M. Mizoue
Keyword(s):  
Linear Array ◽  
Data Gathering ◽  
Array Data

NONLINEAR SUPRATRANSMISSION AND NONLINEAR BISTABILITY IN A FORCED LINEAR ARRAY OF ANHARMONIC OSCILLATORS: A COMPUTATIONAL STUDY

2009 ◽  
Vol 20 (12) ◽  
pp. 1911-1923 ◽  
Author(s):  
J. E. MACÍAS-DÍAZ ◽  
I. E. MEDINA-RAMÍREZ
Keyword(s):  
Nonlinear Systems ◽  
Finite Difference ◽  
Difference Scheme ◽  
Linear Array ◽  
Computational Study ◽  
Nonlinear Phenomena ◽  
Anharmonic Oscillators ◽  
Critical Amplitude ◽  
Bistable Region ◽  
The Relationship

The nonlinear phenomena of supratransmission and bistability in harmonically forced arrays of anharmonic oscillators are studied in the present article. Employing a finite-difference scheme with multiple properties of consistency, we show that these processes are actually present in such nonlinear systems. We show that, for every frequency in the forbidden band-gap of the medium, there exists a critical forcing amplitude above which the propagation of energy into the system from the boundary is inevitable. We provide diagrams of total energy vs amplitude for several values of the parameters of the model studied in this work, as well as a graph establishing the relationship between the critical amplitude at which supratransmission starts vs frequency. Likewise, we establish the existence of a bistable region, where a conducting and an insulating regimes coexist.

Non-linear array data dependence test

2001 ◽  
Vol 57 (2) ◽  
pp. 145-154
Author(s):  
Tsung-Chuan Huang ◽  
Cheng-Ming Yang
Keyword(s):  
Linear Array ◽  
Data Dependence ◽  
Array Data ◽  
Non Linear

ON THE GENERATION OF LOCALIZED NONLINEAR MODES IN A LINEAR ARRAY OF ANHARMONIC OSCILLATORS

2009 ◽  
Vol 20 (08) ◽  
pp. 1187-1198 ◽  
Author(s):  
J. E. MACÍAS-DÍAZ ◽  
I. E. MEDINA-RAMÍREZ ◽  
A. PURI
Keyword(s):  
Finite Difference ◽  
Difference Scheme ◽  
Finite Difference Scheme ◽  
Linear Array ◽  
Anharmonic Oscillators ◽  
Nonlinear Modes ◽  
Energy Domain ◽  
Binary Information ◽  
Consistency Properties ◽  
Efficient Transmission

In this work, we show that an adequate modulation of the driving amplitude in an anharmonic chain results in an efficient transmission of binary information. The nonlinear processes of supratransmission and infratransmission are shown to be useful in the solution of the problem under investigation. Numerical results are conducted using a finite-difference scheme with consistency properties in the energy domain, and the experiments show that localized nonlinear modes are propagated through the chain in a reliable and controlled manner.

Adaptive Imaging in Aberrating Media: A Broadband Algorithm

1992 ◽  
Vol 14 (3) ◽  
pp. 300-321 ◽  
Author(s):  
Stephen J. Norton
Keyword(s):  
Composite Material ◽  
Time Domain ◽  
Adaptive Algorithm ◽  
Heterogeneous Media ◽  
Linear Array ◽  
Scattering Data ◽  
Array Data ◽  
Adaptive Imaging ◽  
Array Imaging

An adaptive algorithm is derived for imaging in an aberrating medium based on wideband (time-domain) linear array data. Image reconstructions using simulated scattering data are presented. An analogy is also drawn between broadband array imaging and limited-angle tomography. This analogy suggests some tomographic-like filtering schemes that can be applied to improve the quality of the image. The algorithm is designed for imaging in composite material, although the imaging of other heterogeneous media such as tissue may be feasible under certain conditions.

Umatilla Virus Association with Fibrils and Tubules in Cultured Cells

1980 ◽  
Vol 38 ◽  
pp. 476-477
Author(s):  
Neil M. Foster ◽  
Ruth D. Breckon
Keyword(s):  
Bluetongue Virus ◽  
Linear Array ◽  
Cultured Cells ◽  
Intimate Association ◽  
Infected Cells ◽  
Dark Staining ◽  
In Cells

Macrotubules have been described1 in cells infected with Umatilla virus (UMAV), an orbivirus for which bluetongue virus (BTV) is the protype. Macrotubules, often in linear array, were observed in the cytoplasm and in intimate association with viroplasms of infected cells. Macrotubules had outside and inside diameters of 20 and 15 nm and many had dark-staining centers with diameters similar to the interiors of the tubules. UMAV was 60 nm and the RNA core was 30 nm in diameter. This report describes the association of UMAV with macrotubules and two types of microtubules.

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