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Application of geophysical surveys to clarify subsurface geologic conditions of man-made lands [PDF]
Kamura, Kazuo
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Sources of variance in ocular microtremor
Physiological Measurement, 1994This study presents a preliminary investigation of the sources of variance in the measurement of ocular microtremor frequency in a normal population. When the results from both experienced and relatively inexperienced operators are pooled, factors that contribute significantly to the total variance include the measurement procedure (p < 0.001), day-to ...
N F, Sheahan +6 more
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Interferometry for ocular microtremor measurement
Applied Optics, 2001The eyes of all normal subjects undergo a continuous, low-amplitude, high-frequency tremor called ocular microtremor (OMT). A number of potential clinical applications of OMT have been identified, including the prediction of outcome in coma. To date, OMT has been investigated primarily with an eye-contacting piezoelectric probe.
G, Boyle, D, Coakley, J F, Malone
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On the correlation of seismic microtremors
Journal of Geophysical Research: Solid Earth, 2005We present results of the analysis of microtremor measurements using a small array. Our analysis is based on the computation of cross‐correlation functions between stations in both frequency and time domains. We obtain similar results in both domains and link those results to the application of Aki's spatial autocorrelation method of using a single ...
Francisco J. Chávez‐García +1 more
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A Transducer for the Clinical Recording of Ocular Microtremor
Journal of Medical Engineering & Technology, 1978(1978). A Transducer for the Clinical Recording of Ocular Microtremor. Journal of Medical Engineering & Technology: Vol. 2, No. 5, pp. 249-251.
W L, Davies, G R, Plant
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Journal of Mountain Science, 2016
To study the characteristics of long period microtremor and applicability of microtremor survey, we have made microtremor observations using long period seismometers of the China’s mainland from coastal cities like Shanghai and Tianjin through Beijing, Xi’an, to the far inland cities of Lanzhou and Tianshui.
Ai-lan Che, Teng-yu Zhang, Shao-kon Feng
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To study the characteristics of long period microtremor and applicability of microtremor survey, we have made microtremor observations using long period seismometers of the China’s mainland from coastal cities like Shanghai and Tianjin through Beijing, Xi’an, to the far inland cities of Lanzhou and Tianshui.
Ai-lan Che, Teng-yu Zhang, Shao-kon Feng
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Microtremor Measurements for the Microzonation of Dinar
Pure and Applied Geophysics, 2001The geotechnical site conditions in Dinar town located in western Turkey were investigated after the 1995 Dinar earthquake based on borings, in situ penetration tests, seismic wave velocity measurements, and microtremor records. The variation of damage distribution within the town was evaluated with respect to 23 district damage ratios calculated ...
Atilla M. Ansal +2 more
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On the use of microtremors for hydrocarbon detection
Geophysical Prospecting, 2014ABSTRACTThe link of spectral anomalies of microtremors to underlying hydrocarbon reservoirs is very controversial, as field experiments support both positive and negative opinions, and there is not a solid theory supporting this work hypothesis. We conducted field tests at different sites, with and without oil and gas presence, to add new experimental ...
VESNAVER, ALDO +4 more
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Double-array refraction microtremors
Journal of Applied Geophysics, 2015Abstract We present a critical analysis of the limitations of the standard ReMi technique, specifically in the case of directional sources, and we propose an alternative approach for the efficient acquisition and processing of passive surface wave data, that exploits a simple and yet effective field layout (two linear orthogonal arrays) and ...
Strobbia, Claudio +2 more
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Microtremor observations in Almeria, Spain
4th EEGS Meeting, 1998Recent destructive earthquakes have shown that, generally, in unconsolidated soils and sedimentary deposits soil movement can be amplified, in a frequency band increasing shaking duration, and also large differences at the level of damage for relatively short distances.
M. Navarro +5 more
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