Results 31 to 40 of about 193,810 (301)
Measurements and Kernels for Source-Structure Inversions in Noise Tomography [PDF]
, 2013 Seismic noise cross correlations are used to image crustal structure and heterogeneity. Typically, seismic networks are only anisotropically illuminated by seismic noise, a consequence of the non-uniform distribution of sources.
Hanasoge, Shravan M.
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Geochemistry, Geophysics, Geosystems, 2014 For seismic surveys in shallow‐water environments, the complexity of local geology and seafloor topography can make it difficult to accurately predict associated sound levels and establish appropriate mitigation radii required to ensure the safety of ...
Timothy J. Crone +2 more
doaj +1 more source
A Versatile Shotgun Source for Engineering and Groundwater Seismic Surveys [PDF]
, 1993 We describe an electrical seismic gun that is capable of firing 8-gauge blank black powder shells in a water-filled borehole under relatively high hydrostatic pressures.
Pelton, John R.
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Hydrostatic Asymmetric Journal Gas Barings for Seismic ACROSS Transmitters
Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2007 The ACROSS (Accurately Controlled Routinely Operated Signal System) is used to detect subtle changes in the physical state of Earth's structure. The signal is sinusoidal elastic waves generated by the rotation of a rotor with eccentric mass set in ...
Tomohiko ISE +4 more
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Active Metamaterials with Tunable Shear Nonreciprocity and Nonlinear Dynamics
Advanced Science, EarlyView.Active gear‐based mechanical metamaterials enable simultaneous control of translational and torsional stiffnesses by 30–100×, break shear reciprocity under positive versus negative loads, broadly tune resonant frequencies, and offer programmable dynamic responses.
Xin Fang, Miao Yu, Dianlong Yu, Li Cheng
wiley +1 more source
The impact of topography on seismic amplification during the 2005 Kashmir earthquake [PDF]
Natural Hazards and Earth System Sciences, 2020 Ground surface topography influences the spatial distribution of earthquake-induced ground shaking. This study shows the influence of topography on seismic amplification during the 2005 Kashmir earthquake.
S. Khan +4 more
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Seismic Emissions from a Highly Impulsive M6.7 Solar Flare
, 2008 On 10 March 2001 the active region NOAA 9368 produced an unusually impulsive solar flare in close proximity to the solar limb. This flare has previously been studied in great detail, with observations classifying it as a type 1 white-light flare with a ...
A. Kosovichev +23 more
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Expected seismicity and the seismic noise environment of Europa [PDF]
, 2017 Seismic data will be a vital geophysical constraint on internal structure of Europa if we land instruments on the surface. Quantifying expected seismic activity on Europa both in terms of large, recognizable signals and ambient background noise is ...
Huang, Hsin-Hua +7 more
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Redescription of the Triassic cynodont Cistecynodon parvus and reassessment of its phylogeny
The Anatomical Record, EarlyView.Abstract Cynodontia is an important subclade of Therapsida that first occurred in the late Permian. It includes extinct subclades which are the non‐mammaliaform cynodonts and Mammaliaformes, with the latter ultimately giving rise to crown mammals. The systematics of non‐mammaliaform cynodonts has been extensively studied and is relatively well‐resolved,
Erin S. Lund +4 more
wiley +1 more source
Model of Seismic Wave Field Excited by Horizontally Distributed Charge
Shock and Vibration, 2021 The amplitude-frequency characteristics of seismic wave field excited by an explosive source can directly affect the accuracy of seismic prospecting.
Xu Qian, Wang Zhong-Qi
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