Results 101 to 110 of about 56,169 (259)
Distant Storms Can Affect Seismic Noise Crustal Monitoring
Geophysical 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
Radio Astronomy with NASA’s Deep Space Network
GalaxiesThe Deep Space Network (DSN) is the spacecraft tracking and communication infrastructure for NASA’s deep space missions. At three sites, approximately equally separated in (terrestrial) longitude, there are multiple radio antennas outfitted with ...
T. Joseph W. Lazio, Stephen M. Lichten
doaj +1 more source
Precision surveying using very long baseline interferometry [PDF]
Radio interferometry measurements were used to measure the vector baselines between large microwave radio antennas. A 1.24 km baseline in Massachusetts between the 36 meter Haystack Observatory antenna and the 18 meter Westford antenna of Lincoln ...
Clark, T. A. +9 more
core +1 more source
Geophysical applications of very-long-baseline interferometry [PDF]
Reviews of Modern Physics, 1991 Very-long-baseline interferometry (VLBI) is a novel observing technique for measuring the relative positions of widely separated points on the surface of the Earth with centimeter-level accuracy. Such accuracy is two or three orders of magnitude better than was available with classical techniques only a few decades ago.
openaire +1 more source
Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.Abstract Oblique slow rifting in a hotspot setting has created a distributed volcanic zone in the central part of the Azores but it's unclear what causes focusing of magma upflow under the islands within a wide plate boundary deformation zone. For São Jorge Island, we use a three‐dimensional finite element model to evaluate crustal stress from the ...
J. D’Araújo +6 more
wiley +1 more source
The Astrophysical Journal LettersThe Event Horizon Telescope (EHT) has imaged two supermassive black holes, Messier 87* (M87*) and Sagittarius A* (Sgr A*), using very-long-baseline interferometry (VLBI).
Kaitlyn M. Shavelle +1 more
doaj +1 more source
Precision tracking systems of the immediate future: A discussion [PDF]
, 1972 The present status and future expectations of four satellite tracking systems, satellite-to-satellite tracking, lasers, very long baseline interferometry (VLBI) and geoceiver are briefly ...
Smith, D. E.
core +1 more source
VLBI observations of the most radio-loud, narrow-line quasar SDSS J094857.3+002225 [PDF]
, 2006 We observed the narrow-line quasar SDSS J094857.3+002225, which has the highest known radio loudness for a narrow-line Seyfert~1 galaxy (NLS1), at 1.7--15.4 GHz with the Very Long Baseline Array (VLBA). This is the first very-long-baseline interferometry
Asada, Keiichi +5 more
core +2 more sources
Applications to Earth physics: Very-long-baseline interferometry and data analysis [PDF]
A range of very long baseline interferometry experiments applied to Earth physics are ...
Counselman, C. C., III, Shapiro, I. I.
core +1 more source
Image-plane fringe tracker for adaptive-optics assisted long baseline interferometry
Astronomical Telescopes + Instrumentation, 2018 Accurate fringe tracking is essential for sensitive long-wavelength thermal background limited operation of the current Very Large Telescope Interferometry (VLTI) and future Planet Formation Imager (PFI) facilities.
M. Ireland +6 more
semanticscholar +1 more source