Results 21 to 30 of about 14,100 (222)

Microtremor response of a mass movement in Federal District of Brazil [PDF]

open access: yes, 2017
The present study provides a brief description of the ambient noise recorded at a slow moving mass movement in Ribeirão Contagem Basin. The area is an interesting natural laboratory as river detachment processes in a number of different stages can be ...
Cárdenas-Soto, Martin   +5 more
core   +2 more sources

Asteroseismic properties of solar-type stars observed with the NASA K2 mission: results from Campaigns 1-3 and prospects for future observations [PDF]

open access: yes, 2016
We present an asteroseismic analysis of 33 solar-type stars observed in short cadence during Campaigns (C) 1-3 of the NASA K2 mission. We were able to extract both average seismic parameters and individual mode frequencies for stars with dominant ...
Aguirre, Víctor Silva   +12 more
core   +3 more sources

Detailed S-wave velocity structure of sediment and crust off Sanriku, Japan by a new analysis method for distributed acoustic sensing data using a seafloor cable and seismic interferometry

open access: yesEarth, Planets and Space, 2022
The S-wave velocity (Vs) structure of sediments and the uppermost crust in the landward slope of a subduction zone are important for determining the dynamics of the overriding plate.
Shun Fukushima   +5 more
doaj   +1 more source

Review of progress in passive seismic reflection exploration

open access: yes地球与行星物理论评, 2023
Seismic exploration is a key method for the study of underground structures. Active seismic surveys can acquire high signal-to-noise ratio reflection data; however, the operation of active seismic surveys is complicated, and the exploration cost is high.
Xiaomin Ruan   +6 more
doaj   +1 more source

An aseismic slip pulse in northern Chile and along-strike variations in seismogenic behavior [PDF]

open access: yes, 2006
We use interferometric synthetic aperture radar, GPS, and seismic observations spanning 5 to 18 years to reveal a detailed kinematic picture of the spatiotemporal evolution of fault slip in a region corresponding to the 30 July 1995 M_w 8.1 subduction ...
Pritchard, M. E., Simons, M.
core   +1 more source

Interrogating a Surging Glacier With Seismic Interferometry

open access: yesGeophysical Research Letters, 2019
Seismic interferometry can be spectacularly sensitive to temporal changes within the Earth. Zhan (2019, https://doi.org/10.1029/2019GL082411) analyzed 12 years of data from seismic stations situated near Bering Glacier, Alaska, that spanned a 2008–2011 ...
Richard C. Aster
doaj   +1 more source

Near-surface structure of the Sodankylä area in Finland, obtained by passive seismic interferometry [PDF]

open access: yesSolid Earth, 2021
Controlled-source seismic exploration surveys are not always possible in nature-protected areas. As an alternative, the application of passive seismic techniques in such areas can be proposed.
N. Afonin   +6 more
doaj   +1 more source

New design of electrostatic mirror actuators for application in high-precision interferometry [PDF]

open access: yes, 2015
We describe a new geometry for electrostatic actuators to be used in sensitive laser interferometers, suited for prototype and table top experiments related to gravitational wave detection with mirrors of 100 g or less.
Bergmann, G.   +4 more
core   +2 more sources

Lab and Field Tests of a Low‐Cost 3‐Component Seismometer for Shallow Passive Seismic Applications

open access: yesEarth and Space Science, 2023
We performed laboratory tests and field surveys to evaluate the performance of a low‐cost 3‐component seismometer, consisting of three passive electromagnetic spring‐mass sensors, whose 4.5 Hz natural frequency is extended down to 0.5 Hz thanks to hyper ...
D. Arosio   +4 more
doaj   +1 more source

The use of passive seismic interferometry for the monitoring of subsurface fluids – from shallow groundwater to native or storage gas reservoirs [PDF]

open access: yesE3S Web of Conferences
Passive (ambient noise) seismic interferometry provides multiple ways to gather information about the subsurface seismic properties using recordings of the seismic ambient noise signal.
Kremer Thomas   +6 more
doaj   +1 more source

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