Results 61 to 70 of about 22,368 (251)

Lava Lake Spattering Drives Seismic Tremor During the Geldingadalir 2021 Eruption, Iceland

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 8, August 2025.
Abstract Volcanic eruptions generate a continuous ground motion that is commonly referred to as tremor. Although tremor is used worldwide for real‐time monitoring of volcanoes, the mechanisms involved are generally poorly understood. Here, we study the episodic effusion during 2021 Geldingadalir eruption. We use photogrammetric data and videos acquired
Alea Joachim, Eva P. S. Eibl, Daniel Müller, Thomas R. Walter, Tom Winder, Nicholas Rawlinson   +5 more
wiley   +1 more source

Repeating Long‐Period Earthquakes at Shishaldin Volcano (Alaska): Insights Into the Source Mechanism and Relationship to Volcano Dynamics

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract We investigate repeating earthquakes at Shishaldin Volcano (Alaska) by applying a multi‐stage clustering technique to the waveforms of approximately 330,000 Long‐Period (LP) earthquakes recorded between October 2003 and July 2004, a period that includes a minor eruption.
M. Palo, V. Cascone, M. Adil, A. Zollo
wiley   +1 more source

Monitoring Spatiotemporal Seismic Velocity Changes Using Seismic Interferometry and Distributed Acoustic Sensing in Mexico City

Journal of Geophysical Research: Solid Earth, Volume 130, Issue 8, August 2025.
Abstract Distributed Acoustic Sensing (DAS) offers a transformative solution for dense, high‐resolution seismic monitoring to address the challenges of traditional seismometers in urban seismic surveys. Here, we employ seismic interferometry of the ambient noise field and the trace stretching method to monitor seismic velocity variations in Mexico City.
Yang Li, Mathieu Perton, Laura A. Ermert, Francisco J. Sánchez‐Sesma, Leobardo I. Escobar Maya, Zack J. Spica   +5 more
wiley   +1 more source

Self-attraction effect and correction on three absolute gravimeters

, 2012
The perturbations of the gravitational field due to the mass distribution of an absolute gravimeter have been studied. The so called Self Attraction Effect (SAE) is crucial for the measurement accuracy, especially for the International Comparisons, and ...
, A Germak, Bich W, D'Agostino G, D'Agostino G, D'Agostino G Germak A Mazzoleni F Quagliotti D Barbato G, E Biolcati, Jiang Z, Nagornyi V D, Nagornyi V D Sideris M G, Niebauer T M, Niebauer T M, Robertson L, Rothleitner Ch, S Svitlov, Timmen L, Torge W, Vitushkin L   +17 more
core   +1 more source

The Effect of Mars Impact Crater Topography on Seismic Signals

Journal of Geophysical Research: Planets, Volume 130, Issue 8, August 2025.
Abstract Meteorite impacts on Mars result in seismic recordings with relatively small surface wave amplitudes compared to body wave amplitudes, unlike what is generally observed in earthquakes. Here, we test with numerical modeling whether Mars' topography could be responsible for the preferential attenuation of surface waves. We use a spectral element
J. Charoensawan, L. Adam, K. van Wijk, L. Margerin, K. Miljkovic, C. Nunn   +5 more
wiley   +1 more source

Statistical Methods to Distinguish Shallow Moonquakes From Impacts

Journal of Geophysical Research: Planets, Volume 130, Issue 8, August 2025.
Abstract One of the biggest challenges in lunar seismology is accurately classifying seismic signals to evaluate impact and seismicity rates. While past studies have used qualitative differences for classification, we introduce quantitative methods to distinguish the most energetic signals: shallow moonquakes and natural impacts.
Alice R. Turner, Sean P. S. Gulick, Daniel T. Trugman, Francesco Civilini, Keisuke Onodera   +4 more
wiley   +1 more source

Broadband FBG resonator seismometer: principle, key technique, self-noise, and seismic response analysis.

Optics Express, 2018
A broadband optical fiber seismometer based on FBG resonator is proposed for earthquake monitoring. The principle and key technique, high-resolution ultralow-frequency wavelength interrogation by dual-laser swept frequency and beat frequency method, are ...
Wenzhu Huang, Wentao Zhang, Yingbo Luo, Li Li, Wenyi Liu, Fang-qin Li   +5 more
semanticscholar   +1 more source

Specification goals for a Mars seismic network [PDF]

A seismic network on Mars should have enough stations (e.g., 24) to characterize the seismicity of the planet for comparison with a diversity of structural features; be comprised of low noise stations, preferably underground, 3 to 4 orders of magnitude ...
Davis, Paul M.
core   +1 more source

Seismographic recording of large rocket engine operation [PDF]

, 1969
Recording equipment for rocket engine vibration is adaptable to determining the structural strength of building materials. This seismographic system is portable and is capable of measuring displacements in the direction of three mutually perpendicular ...
Dalins, I., Mc Carty, V.
core   +1 more source

The Viking seismometry [PDF]

Efforts were made to determine the seismicity of Mars as well as define its internal structure by detecting vibrations generated by marsquakes and meteoroid impacts.
Anderson, D. L., Anderson, K., Daonty, A. M., Duennebier, F. K., Gains, N. R., Knight, T. C. D., Kovach, R. L., Latham, G. V., Lazarewicz, A. R., Miller, W. F.   +9 more
core   +1 more source