Results 111 to 120 of about 15,879 (217)

Evaluating Seismic Ambient Noise Techniques for Imaging Lava Tubes on the Moon

open access: yesJournal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Detecting and characterizing lava tubes is a key objective of upcoming lunar missions. While evidence for their presence exists, their precise dimensions and depths remain uncertain. This study evaluates the potential of seismic ambient noise methods, such as seismic interferometry, H/V spectral ratios, distributed acoustic sensing (DAS), and ...
Sabrina Keil   +4 more
wiley   +1 more source

Ocular biometric characteristics of cataract patients in western China

open access: yesBMC Ophthalmology, 2018
Background We aimed to measure ocular biometric characteristics in older cataract patients from western China. Methods Ocular biometry records were retrospectively analyzed for 6933 patients with cataracts (6933 eyes) at least 50 years old who were ...
Qing Huang   +3 more
doaj   +1 more source

Speckle interferometry [PDF]

open access: yes, 1999
We have presented the basic mathematical treatment of interferometry in the optical domain. Its applications in astronomical observations using both the single aperture, as well as the diluted apertures are described in detail.
Saha, S. K.
core   +2 more sources

Phase Fluctuations in Bose-Einstein Condensates

open access: yes, 2002
We demonstrate the existence of phase fluctuations in elongated Bose-Einstein Condensates (BECs) and study the dependence of those fluctuations on the system parameters.
Arlt, J. J.   +10 more
core   +1 more source

Distant Storms Can Affect Seismic Noise Crustal Monitoring

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Using seismic noise interferometry to monitor the Earth's interior relies on continuous seismic wavefields produced by stable, invariant sources. In numerous applications, this condition is relaxed, arguing that secondary scattering effects render the late coda source independent.
Jinwu Li   +4 more
wiley   +1 more source

The effect of wavefront corrugations on fringe motion in an astronomical interferometer with spatial filters

open access: yes, 2005
Numerical simulations of atmospheric turbulence and AO wavefront correction are performed to investigate the timescale for fringe motion in optical interferometers with spatial filters.
Baldwin   +8 more
core   +1 more source

Sub‐Wavelength Seabed Stiffness Control of Seismic Amplitude Modulation in Seafloor DAS

open access: yesGeophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Submarine distributed acoustic sensing cables record seafloor strain with striking spatial variability whose physical origin is not immediately obvious. By explicitly partitioning the recorded wavefield into ocean‐wave, Scholte‐wave, and teleseismic Rayleigh‐wave components, we show that these amplitude variations are not random but encode ...
A. Bakulin   +3 more
wiley   +1 more source

Biometric Parameters and Corneal Astigmatism: Differences Between Male and Female Eyes

open access: yesClinical Ophthalmology, 2020
Maddalena De Bernardo,1 Lucio Zeppa,2 Lucia Zeppa,2 Palmiro Cornetta,3 Livio Vitiello,1 Nicola Rosa1 1Department of Medicine, Surgery and Dentistry, “Scuola Medica Salernitana”, University of Salerno, Baronissi, Salerno, Italy; 2San Giuseppe ...
De Bernardo M   +5 more
doaj  

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