搜索结果: 1-15 共查到“理学 broadband”相关记录42条 . 查询时间(0.141 秒)
Best-basis analysis of broadband tremor signals
adaptive spectrogram analysis broadband tremor
2015/10/8
Active volcanoes usually generate highly non-stationary broadband tremor signals. Short-time shock events with a frequency content of several decades are superimposed on a stationary narrow band conti...
Tornillo seismic events at Galeras volcano, Colombia: a summary and new information from broadband three-component measurements
volcanoes seismic events broadband record tornillos Galeras volcano
2015/10/8
Long-duration events have been recorded at several active, andesitic volcanoes. Their main characteristics are a single, sharp frequency peak, and an exceptionally long coda. Because their seismograms...
BROADBAND SENSOR LOCATION SELECTION USING CONVEX OPTIMIZATION IN VERY LARGE SCALE ARRAYS
array processing multi-frequency beam pattern design sensor location selection very large scale arrays convex optimization simulated annealing
2015/9/29
Consider a sensing system using a large number of N microphones placed in multiple dimensions to monitor a broadband acoustic field. Using all the microphones at once is impractical because of the amo...
Broadband waveforms and site effects at a borehole seismometer in the Po alluvial basin (Italy)
broadband data borehole seismometer site effect alluvial basin
2015/9/28
Broadband seismograms recorded at a borehole three-component (high dynamic range) seismic station in the Po Valley (Northern Italy) were analyzed to study the velocity structure of the shallow sedimen...
Estimation of seismic moments from local magnitudes and coda durations for the Cairo earthquake aftershocks recorded at Kottamyia (KEG) Broadband station
aftershocks seismic moment scaling
2015/9/17
The spectral analysis of fifty-five KEG VBB records from the October 12, 1992 Cairo earthquake source region
was performed to obtain the seismic moment. We obtained this parameter in turn to develop ...
The monterey bay broadband ocean bottom seismic observatory
seismic station San Gregorio Fault earthquake
2015/9/7
We report on the installation of a long-term buried ocean-floor broadband seismic station
(MOBB) in Monterey Bay, California (USA), 40km off-shore, at a water depth of 1000 m.
The station was instal...
AxiSEM: broadband 3-D seismic wavefields in axisymmetric media
broadband 3-D seismic wavefields axisymmetric media
2015/1/6
We present a methodology to compute 3-D global seismic wavefields for realistic earthquake sources in visco-elastic anisotropic media, covering applications across the observable seismic frequency ban...
Spectra of Nearby Galaxies Measured with a New Very Broadband Receiver
spectrographs spectroscopic
2014/12/23
Three-millimeter-wavelength spectra of a number of nearby galaxies have been obtained at the Five College Radio Astronomy Observatory (FCRAO) using a new, very broadband receiver. This instrument, whi...
Corrigendum to “Decoupling the effects of clear atmosphere and clouds to simplify calculations of the broadband solar irradiance at ground level” published in Geosci. Model Dev., 7, 1661–1669, 2014
clear atmosphere simplify calculations of the broadband solar irradiance
2014/12/19
Due to an oversight in the production process, the wrong
Fig. 2 was inserted into the manuscript. The correct figure
with its caption can be seen below.
Decoupling the effects of clear atmosphere and clouds to simplify calculations of the broadband solar irradiance at ground level
clear atmosphere clouds to simplify calculations broadband solar irradiance ground level
2014/12/19
In the case of infinite plane-parallel single- and double-layered cloud, the solar irradiance at ground level computed by a radiative transfer model can be approximated by the product of the irradianc...
Genetic approach helps design broadband metamaterial
Genetic approach helps design broadband metamaterial
2014/5/13
UNIVERSITY PARK, Pa. -- A specially formed material that can provide custom broadband absorption in the infrared can be identified and manufactured using "genetic algorithms," according to Penn State ...
Broadband seismic deployments in East Antarctica: IPY contribution to monitoring the Earth’s interiors
Broadband seismology International Polar Year East Antarctica Global network Deep interiors
2015/8/17
“Deployment of broadband seismic stations on the Antarctica continent” is an ambitious project to improve the spatial resolution of seismic data across the Antarctic Plate and surrounding regions. Sev...
Excitonic effects from geometric order and disorder explain broadband optical absorption in eumelanin
geometric order disorder explain broadband optical absorption melanin
2014/9/24
Eumelanin is a ubiquitous biological pigment, and the origin of its broadband absorption spectrum has long been a topic of scientific debate. Here, we report a first-principles computational investiga...
Spectral control of broadband light through random media by wavefront shaping
Spectral control of broadband light random media wavefront shaping Optics
2012/5/31
A random medium can serve as a controllable arbitrary spectral filter with spectral resolution determined by the inverse of the interaction time of the light in the medium. We use wavefront shaping to...
Experimental demonstration of a broadband array of invisibility cloaks in the visible frequency range
Experimental demonstration broadband array invisibility cloaks visible frequency range Optics
2012/4/20
Very recently Farhat et al. [1] have suggested that arrays of invisibility cloaks may find important applications in low-interference communication, noninvasive probing, sensing and communication netw...