Results 41 to 50 of about 2,771 (227)

Surface Consistent Seismic Hazard Assessment in the Shillong Plateau, Northeast India: A Probabilistic Approach Using Multiple Source Models and a Logic Tree Framework

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT We perform probabilistic seismic hazard analysis (PSHA) in the Shillong Plateau by clubbing the up‐to‐date earthquake data and seismotectonic properties of the study area. Twenty‐one areal seismic sources are delineated based on the updated earthquake catalog, tectonic, and fault plane solutions.
Mohd Shahabuddin, William Kumar Mohanty, Eleftheria Papadimitriou   +2 more
wiley   +1 more source

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

Solid 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, Tian Cui, Wei-wei Ding, Xiao-dong Wei, Zhi-ming Bai, Ping Tan, Shi-tan Nie, Yang-fan Deng, Shuai Xue, Wei Li, Ji-wen Teng   +10 more
doaj   +1 more source

Seismic reflectors and unconformities at passive continental margins

Nature, 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

Concept, Tests, and Optimum Design of Novel Negative Stiffness Friction Dampers for Seismic Protection of Long‐Span Bridges

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Viscous dampers (VDs) are widely used to mitigate the excessive responses of long‐span bridges. However, VDs face some intricate challenges in engineering practices, including high damping coefficient requirement, potential base shear amplification and tremendous damping force under high velocity. To address these issues, this study develops a
Ruisheng Ma, Shaodong Jiang, Kun Xu, Qiang Han, Xiuli Du, Kaiming Bi   +5 more
wiley   +1 more source

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

Clean 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, Constantine Karytsas, Spyridon Karytsas, Flavio Poletto, Biancamaria Farina, Erika Barison   +5 more
doaj   +1 more source

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

Geological 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, Won‐Ki Kim, Chul Woo Rhee, Seungyeol Lee   +3 more
wiley   +1 more source

Passive Multichannel Analysis of Surface Waves: A Two-Dimensional Seismic Dataset Acquired with Geophones and Distributed Acoustic Sensing at a Mineral Exploration Site in the Pilbara Region of Western Australia

Geosciences
Passive seismic surveys have attracted interest for use in many geological and geotechnical applications in the past few decades, mainly in reconstructing models of near-surface properties.
Emad Al-Hemyari, Roman Isaenkov, Pavel Shashkin, Roman Pevzner, Konstantin Tertyshnikov   +4 more
doaj   +1 more source

A look at the blind Kumamoto experiment: combining active and passive seismic observations to avoid Rayleigh-wave mode misidentification

Earth, Planets and Space, 2023
We present our pathway through participation in the blind Kumamoto exercise, particularly the Step 1 of site characterization. The combination of passive and active seismic imaging techniques is used to image the velocity profile beneath the KUMA site ...
E. Diego Mercerat, T. Dylan Mikesell
doaj   +1 more source

Review of progress in seismic exploration in metallic deposits

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, Li-Yun Fu, Fusen Xiao, Qizhen Du   +3 more
doaj   +1 more source

Passive, Nonlinear, Mechanical Structures for Seismic Attenuation [PDF]

Journal of Computational and Nonlinear Dynamics, 2005
Gravitational wave detectors aim to detect strain perturbations of space-time on the order of 10−21–10−22 at frequencies between 1Hz and a few kHz. This space-time strain, integrated over kilometer scale interferometers, will induce movements of suspended mirrors on the order of 10−18–10−19m.
openaire   +2 more sources