Results 61 to 70 of about 433 (181)
Water Resources Research, Volume 61, Issue 9, September 2025.Abstract Beavers (Castor canadensis) alter river corridor hydrology by creating ponds and inundating floodplains, and thereby improving surface water storage. However, the impact of inundation on groundwater, particularly in mountainous alluvial floodplains with permeable gravel/cobble layers overlain by a soil layer, remains uncertain.
Lijing Wang +6 more
wiley +1 more source
Non-stability of the noise HVSR at sites near or on topographic heights
Geophysical Journal International, 2020 SUMMARYThe horizontal to vertical spectral ratio (HVSR) of seismic noise is often used to investigate site effects, and it is usually assumed to be a stable feature of the site considered. Here we show that such an assumption is not always justified, and may lead to incorrect conclusions.
Mario La Rocca +3 more
openaire +1 more source
Evaluating Seismic Ambient Noise Techniques for Detecting Ice‐Bearing Rocks on the Moon
Earth 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
Earthquake Spectra, Volume 41, Issue 3, Page 2278-2310, August 2025.We address two open questions concerning nonlinear soil behavior in a seismic hazard and risk context; (1) which site proxies can be used to predict and map nonlinear site amplification? (2) At which level of ground‐motion intensity should such nonlinear models be considered?
Karina Loviknes +3 more
wiley +1 more source
Progressive Layer Stripping Analysis for HVSR Interpretation
The horizontal-to-vertical spectral ratio (HVSR) technique is widely used to determine site fundamental periods from ambient noise recordings, but relating the observed peak to a specific impedance contrast within layered soils remains challenging. This paper presents an enhanced implementation of hvstrip-progressive, a Python package for forward HVSR ...
Fathizadeh, Mersad +2 more
openaire +2 more sources
Site characterization of Sikkim Himalaya using HVSR
SeismicaThe northeastern state of Sikkim lying in central segment of the Himalayan orogen is a seismically active region which was plagued by the recent 2011 Mw6.9 earthquake. Analysis of local earthquakes recorded at the recently deployed seismic network of 27 broadband seismic stations revealed seismogenic zone extending down to lower crustal depths with a ...
Mita Uthaman +2 more
openaire +2 more sources
A STUDY OF MICROTREMOR HVSR IN THE RIO-ANTIRIO AREA, (GREECE)
Bulletin of the Geological Society of Greece, 2017 Horizontal to Vertical Spectral Ratio (HVSR) method has been applied on ambient noise records at the Rio- Antirio area (central Greece). The dataset used was recorded during 7 days by 12 temporary seismic stations deployed in the area. The stations were laid out along a profile and their interval was approximately 500m.
Norda, M.E. +3 more
openaire +3 more sources
地震科学进展The background noise characteristics of 477 strong-motion stations in the Beijing-Tianjin-Hebei region were analyzed using power spectral density, whereas the horizontal-to-vertical spectral ratio (HVSR) was applied to investigate site response ...
Jiaqi Wang
doaj +1 more source
Nonlinear response of S-net sites in 2022 Mw7.4 off-Fukushima earthquake, Japan
Yantu gongcheng xuebaoTo investigate the seismic nonlinear response of seafloor sites, this study analyzes S-net seafloor strong-motion records from the Mw7.4 off-Fukushima earthquake on March 16, 2022. Horizontal-to-vertical spectral ratios (HVSR) are compared between strong
HU Jinjun 1, 2, LI Jianhua 1, 2, CUI Xin 1, 2
doaj +1 more source
Investigating Near Surface S-Wave Velocity Properties Using Ambient Noise in Southwestern Taiwan
Terrestrial, Atmospheric and Oceanic Sciences, 2015 Ambient noise is typically used to estimate seismic site effects and velocity profiles instead of earthquake recordings, especially in areas with limited seismic data.
Chun-Hsiang Kuo +4 more
doaj +1 more source