Results 51 to 60 of about 5,209 (199)

Detection of karst collapses through microtremor surface waves based on windowing cross-correlation function

open access: yesCarsologica Sinica
The study area is located in the karst development area of Pingxiang in the west of Jiangxi Province, China. The landform of this area is complex, low in the northwest and high in the southeast. The fold action and gravitational sliding action led to the
Tong SONG   +4 more
doaj   +1 more source

The inversion of spectral ratio H/V in a layered system using the Diffuse Field Assumption (DFA) [PDF]

open access: yes, 2016
In order to evaluate the site effects on seismic ground motion and establish preventive measures to mitigate these effects, the dynamic characterization of sites is mandatory.
Carmona, Enrique   +6 more
core   +2 more sources

Validating alternative methods to account for shallow site effects in hybrid broadband ground‐motion simulation of small‐magnitude earthquakes in New Zealand

open access: yesEarthquake Spectra, Volume 41, Issue 5, Page 3914-3948, December 2025.
Proper incorporation of shallow site effects in hybrid broadband ground‐motion simulation is essential to improving predictions at soil sites. This paper validates and compares four methods to account for these effects in the predominantly linear regime, using 1446 ground motions from 213 small‐magnitude earthquakes (3.5≤MW≤5.0) recorded at 38 sites in
Felipe Kuncar   +5 more
wiley   +1 more source

Numerical and experimental analysis of the leaning Tower of Pisa under earthquake [PDF]

open access: yes, 2017
Twenty years have passed from the most recent studies about the dynamic behavior of the leaning Tower of Pisa. Significant changes have occurred in the meantime, the most important ones concerning the soil-structure interaction.
Akkar   +19 more
core   +2 more sources

Evaluating Seismic Ambient Noise Techniques for Detecting Ice‐Bearing Rocks on the Moon

open access: yesEarth and Space Science, Volume 12, Issue 9, September 2025.
Abstract One of the primary objectives of upcoming lunar missions is to locate ice‐bearing rocks at the South Pole. While evidence for their presence exists, the exact distribution and quantity remain uncertain. In this study, we evaluate the potential of seismic ambient noise techniques—including seismic interferometry, H/V spectral ratios ...
S. Keil, M. Schimmel, H. Igel
wiley   +1 more source

ANALISIS KERENTANAN TANAH BERDASARKAN PENGUKURAN MIKROTREMOR DI DESA JATI MULYO, TANJUNG JABUNG TIMUR

open access: yesJGE, 2023
Desa Jati Mulyo berada di Kecamatan Dendang Kabupaten Tanjung Jabung Timur yang didominasi oleh gambut sehingga rentan terhadap penurunan muka tanah.
Iwilja Nanda Risa   +2 more
doaj   +1 more source

Networks with time structure from time series

open access: yes, 2012
We propose a method of constructing a network, in which its time structure is directly incorporated, based on a deterministic model from a time series. To construct such a network, we transform a linear model containing terms with different time delays ...
Albert   +19 more
core   +1 more source

Analysis of microtremor records

open access: yesBulletin of the New Zealand Society for Earthquake Engineering, 1973
A previous paper 
described two techniques developed at the University of Auckland, School
of Engineering for recording microtremors. In this paper, various possible methods of analysing such records, with emphasis on the discernment
 of frequency content, are outlined.
I. M. Parton, P. W. Taylor
openaire   +2 more sources

Effect of Age on Ocular Microtremor Activity [PDF]

open access: yesThe Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 2001
Ocular microtremor (OMT) is a high-frequency tremor of the eyes. It is present in all individuals and is related to brainstem activity. The OMT signal appears as an irregular oscillatory movement with intermittent burst-like components. The clinical interest in OMT has centered on its use in the assessment of the comatose patient, with broad agreement ...
C, Bolger   +4 more
openaire   +2 more sources

A frequency‐domain beamforming procedure for extracting Rayleigh wave attenuation coefficients and small‐strain damping ratio from 2D ambient noise array measurements

open access: yesEarthquake Spectra, Volume 41, Issue 2, Page 1333-1363, May 2025.
The small‐strain damping ratio plays a crucial role in assessing the response of soil deposits to earthquake‐induced ground motions and general dynamic loading. The damping ratio can theoretically be inverted for after extracting frequency‐dependent Rayleigh wave attenuation coefficients from wavefields collected during surface wave testing.
Aser Abbas   +3 more
wiley   +1 more source

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