Results 61 to 70 of about 64,813 (265)

Passive control of structures for seismic loads

open access: yesBulletin of the New Zealand Society for Earthquake Engineering, 2000
The control of structures to improve their performance during earthquakes was first proposed more than a century ago. But it has only been in the last 25 years that structures have been successfully designed and built using earthquake protective systems. Today these systems range from simple passive devices to fully active systems.
openaire   +2 more sources

Multiphase Tectonic Process With Slab Dynamics in the Northern East China Sea Shelf Basin

open access: yesGeological Journal, EarlyView.
Megasequence 1 characterised by Palaeocene extension and differential subsidence driven by the rollback of the subducting Izanagi Plate. Megasequence 2 records a kinematic reorganisation of the East Asian margin, transition from a rifting to a compressional regime.
Juhwan Woo   +3 more
wiley   +1 more source

New progress on the onshore-offshore seismic survey in East China Continental Margin

open access: yesSolid Earth Sciences, 2019
The East China Continental Margin (ECCM) is an exemplified natural laboratory not only for studying the origin and evolution of trench-arc-basin system, but also for investigating the deformation mechanism within continent and its margins.
Yun Chen   +10 more
doaj   +1 more source

Correlations of Seismic Velocities and Elastic Moduli with Temperature in Superhot and Enhanced Geothermal Systems

open access: yesClean Technologies, 2022
This paper presents correlations derived by linear regression analysis of seismic velocities VP and VS and elastic moduli EP and ES with temperature in Los Humeros superhot (SHGS) and Acoculco enhanced (EGS) geothermal systems at depths down to 3 km ...
Dimitrios Mendrinos   +5 more
doaj   +1 more source

Integrated design of hybrid interstory-interbuilding multi-actuation schemes for vibration control of adjacent buildings under seismic excitations [PDF]

open access: yes, 2017
The design of vibration control systems for the seismic protection of closely adjacent buildings is a complex and challenging problem. In this paper, we consider distributed multi-actuation schemes that combine interbuilding linking elements and ...
Karimi, Hamid Reza   +3 more
core   +2 more sources

Seismic reflectors and unconformities at passive continental margins

open access: yesNature, 1984
Vail and co-workers1–3 have recently suggested, based on seismic reflection data available to Exxon, that more than 25 global unconformities occur in Mesozoic–Tertiary age passive continental margins around the world. These data have been used to subdivide the stratigraphical record into several cycles, each of which is controlled by oscillatory ...
Thorne, J, Watts, A
openaire   +1 more source

A Passive Low‐Frequency, High‐Sensitivity Diamagnetic Levitation Accelerometer

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Despite the great potential of diamagnetic levitation accelerometers in detecting low‐frequency and weak motion, there is still a demand to further enhance their sensitivity for geophysical and microgravity applications. In this study, a straightforward structural modulating approach is presented to enhance the sensitivity of diamagnetic ...
Yuanping Xu   +5 more
wiley   +1 more source

A Sensitivity Analysis Workflow for Power Series Compounded Lifetime Models: Evidence From Weibull Power Series Fits

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT We propose a practical procedure to quantify the time varying influence of parameters on hazard functions for power series compounded lifetime models. The procedure combines likelihood based fitting with a two stage sensitivity analysis and applies to a range of baselines and compounding laws.
Yuancheng Si, Saralees Nadarajah
wiley   +1 more source

Review of progress in seismic exploration in metallic deposits

open access: yes地球与行星物理论评, 2022
With the exhaustion of near-surface metal mineral resources, exploration in the second space (500~2 000 m) is an inevitable trend in the future. The conventional gravity, magnetic and electrical signals are severely attenuated with depth and cannot meet ...
Cong Tang   +3 more
doaj   +1 more source

Passive seismic interferometry by multidimensional deconvolution

open access: yesGeophysics, 2008
Abstract We introduce seismic interferometry of passive data by multidimensional deconvolution (MDD) as an alternative to the crosscorrelation method. Interferometry by MDD has the potential to correct for the effects of source irregularity, assuming the first arrival can be separated from the full response. MDD applications can range
Wapenaar, C.P.A. (author)   +2 more
openaire   +5 more sources

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