Results 51 to 60 of about 703,808 (249)

Seismic analysis and design of tunnels within fault ground: A review

open access: yesDeep Underground Science and Engineering, EarlyView.
The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang   +6 more
wiley   +1 more source

A slab in depth: Three‐dimensional geometry and evolution of the Indo‐Australian plate

open access: yesGeochemistry, Geophysics, Geosystems, 2007
Geoscientists use plate tectonics to explain many aspects of both continental evolution and evolution of the planet as a whole. The subduction of material at convergent plate boundaries forms a fundamental component to the theory of plate tectonics ...
Simon Richards   +2 more
doaj   +1 more source

Dynamic response at the terminus of oblique intersecting joints subjected to stress waves

open access: yesDeep Underground Science and Engineering, EarlyView.
This study derives the propagation equation for stress waves impinging upon nonlinear oblique intersecting joints. It analyzes the dynamic response at the terminus of nonlinear oblique intersecting joints subjected to stress waves. Abstract To investigate the dynamic response at the terminus of oblique intersecting joints subjected to stress waves, a ...
Gang Hu   +4 more
wiley   +1 more source

Development of thermal state and plate tectonics in the North China Craton during Neoarchean–Paleoproterozoic

open access: yesCommunications Earth & Environment
Although the early tectonic regime of the Earth remains debated, it is generally accepted that the geodynamic system underwent a notable transition during the Neoarchean–Paleoproterozoic.
Xiangqiao Han   +4 more
doaj   +1 more source

Regarding the discussion about the banded magnetic anomalies of the oceans

open access: yesГеофизический журнал
The author supports the theory of plate tectonics with a plume component, pointing out the weak aspects of the arguments regarding the banded magnetic anomalies (BMA) of the ocean floor, which are the subject of discussions between supporters and ...
O.B. Gintov
doaj   +1 more source

Numerical simulation study on the characteristics and propagation attenuation of vibration signals in freezing pipe fracture

open access: yesDeep Underground Science and Engineering, EarlyView.
This research study employs analysis system (ANSYS) fluid–structure interaction simulations to investigate the generation and attenuation of vibration signals resulting from freezing pipe fractures in artificial ground freezing projects. By evaluating key variables—including frozen soil elastic modulus, brine inlet pressure, and external pipe pressure ...
Yi Cao, Yansen Wang, En Chen, Meng Zhao
wiley   +1 more source

Plate Tectonics with GIS [PDF]

open access: yes, 2006
The concept of Plate Tectonics involves piecing together a wide variety of evidence to build a picture. This includes the location of earthquakes, volcanoes, mountains, fossils, and other paleoclimate data. The theory of Plate Tectonics is driven
Ruder, Nate
core   +1 more source

Preface to the Special Issue on "Geodynamics of Taiwan and the Philippines"

open access: yesTerrestrial, Atmospheric and Oceanic Sciences, 2015
This special issue contains a collection of six papers dealing with the geology, geophysics, and tectonics of Taiwan and the Philippines. Most of these papers were presented at the fourth _ Earth Sciences International _ in Manila, Philippines, 8 - 9 ...
Win-Bin Cheng and Shou-Yeh Gong
doaj   +1 more source

SECULAR CHANGES IN RELATIONSHIPS BETWEEN PLATE-TECTONIC AND MANTLE-PLUME ENGENDERED PROCESSES DURING PRECAMBRIAN TIME

open access: yesГеодинамика и тектонофизика, 2016
Paradoxically, the lists of “proxies” of both plate- and plume-related settings are devoid of even a mention of the high-grade metamorphic rocks (granulite, amphibolite and high-temperature eclogite facies).
M. V. Mints, P. G. Eriksson
doaj   +1 more source

Diversification and biogeography of Rhacophoridae – a model testing approach

open access: yesFrontiers in Ecology and Evolution, 2023
A central focus of evolutionary biology is to understand species diversity by studying how they arrived at their current geographic distributions. The biogeography of the Old World tree frogs in the family Rhacophoridae has been extensively studied ...
Gajaba Ellepola   +2 more
doaj   +1 more source

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