Relevant bibliographies by topics / Hotspot reference frame

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  2. Dissertations / Theses
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Academic literature on the topic 'Hotspot reference frame'

Author: Grafiati
Published: 10 March 2023

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Journal articles on the topic "Hotspot reference frame"

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Cuffaro, Marco, and Donna M. Jurdy. "Microplate motions in the hotspot reference frame." Terra Nova 18, no. 4 (July 4, 2006): 276–81. http://dx.doi.org/10.1111/j.1365-3121.2006.00690.x.

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Qiong, ZHANG, WANG Shi-Min, and ZHAO Yong-Hong. "AN ABSOLUTE PLATE MOTION MODEL BASED ON HOTSPOT REFERENCE FRAME." Chinese Journal of Geophysics 60, no. 5 (September 2017): 456–64. http://dx.doi.org/10.1002/cjg2.30060.

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Wang, Shimin, and Ren Wang†. "Current plate velocities relative to hotspots: implications for hotspot motion, mantle viscosity and global reference frame." Earth and Planetary Science Letters 189, no. 3-4 (July 2001): 133–40. http://dx.doi.org/10.1016/s0012-821x(01)00351-x.

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Perrin, M., M. Prevot, and F. Bruere. "Rotation of the Oman ophiolite and initial location of the ridge in the hotspot reference frame." Tectonophysics 229, no. 1-2 (January 1994): 31–42. http://dx.doi.org/10.1016/0040-1951(94)90004-3.

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Lingling, Lou. "A Study on the Transmission of Implicit Information in Chinese Tang Poetry Translation under the Guidance of Frame Theory." International Journal of Applied Linguistics and English Literature 9, no. 5 (September 30, 2020): 62. http://dx.doi.org/10.7575/aiac.ijalel.v.9n.5p.62.

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As Chinese is a language focusing on parataxis, and China is a country with a largely different culture from the western world, the implicit information contained in poems could not be easily perceived by target language readers if it is not properly delivered. As a result, the faithful transmission of the implicit information contained in Tang poetry has always been a hotspot in the research of the translation of Chinese classical poetry. The aim of the research is to study the transmission of implicit information in Tang poetry translation under the frame theory. To achieve this, the thesis would be discussed in six parts. After a brief introduction to the current situation of Tang poetry translation, the guiding theory would be illustrated in detail. Then the author will try to analyze the reasons for the failure of transmission of implicit information in Tang poetry translation, which leads to the examination of the feasibility of using frame theory in the guidance of the implicit information transmission. And then specific translation strategies are put forward by the author together with some examples in accordance with frame theory. In the end, a conclusion is drawn based on the discussion of the previous chapters. The study of the transmission of implicit information from the angle of frame theory is a creative and bold try, which provides a theoretic reference for the research on this subject in the future, and a practical experience for the implicit information transmission in Tang poetry translation activities.
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Anders, Mark H., Victor J. DiVenere, Sidney R. Hemming, and Joel Gombiner. "40Ar/39Ar and paleomagnetic constraints on the age and areal extent of the Picabo volcanic field: Implications for the Yellowstone hotspot." Geosphere 15, no. 3 (May 8, 2019): 716–35. http://dx.doi.org/10.1130/ges01589.1.

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Abstract The Picabo volcanic field is one of the key silicic volcanic fields in the time-transgressive track of the Yellowstone hotspot. The Picabo volcanic field is also one of the most poorly defined volcanic fields along the track of the Yellowstone hotspot. Determining the age and areal extent of the Picabo volcanic field ignimbrites is one of the primary objectives of this study. In our effort to correlate ignimbrites within the Picabo volcanic field as well as identify those from the neighboring Twin Falls and Heise volcanic fields, we present new petrographic, 40Ar/39Ar, and paleomagnetic data. With these data, we correlated several ignimbrites within the Picabo volcanic field. In some cases, we correlate units previously thought to be in the Picabo volcanic field to older volcanic fields. This includes the Picabo Tuff, which we suggest originates from the Twin Falls volcanic field rather from its namesake volcanic field. The first and best documented major silicic eruption of the volcanic field, the Arbon Valley Tuff, is also the largest ignimbrite in the Picabo volcanic field. There is disagreement as to whether the Arbon Valley Tuff is the result of a single ignimbrite eruption or multiple eruptions. We previously have suggested that the Arbon Valley Tuff is the result of two eruptions, one at 10.41 ± 0.01 Ma and the other at 10.22 ± 0.01 Ma (Anders et al., 2014). Those combining radiometric dates into a single eruption age report ages of 10.2 Ma, 10.27 ± 0.01 Ma, 10.34 ± 0.03 Ma, and 10.44 ± 0.27 Ma. We also suggest the final eruption of the Picabo volcanic field was the tuff of American Falls dated at 7.58 ± 0.02 Ma. Estimates of the location of Picabo volcanic field have been used to mark a major change in the migration rate of the Yellowstone–Snake River Plain silicic volcanic system. Based on our new data, we found only minor changes of the boundaries of the Picabo volcanic field from previous studies. Using the age of the Arbon Valley Tuff (10.41 Ma), we calculated an extension-corrected migration rate of 2.27 ± 0.2 cm/yr between the position of the Picabo volcanic field and that of the Yellowstone volcanic field over the past ∼10 m.y. This estimate is close to the extension corrected 2.38 ± 0.21 cm/yr value based on the migration of the hotspot deformation field. These rates are consistent with independent estimates of North American plate velocity over the past 10 m.y. and therefore consistent with a fixed reference frame for the Yellowstone hotspot. These results stand in contrast with several recent models for the evolution of the Yellowstone–Snake River Plain volcanic system. We also discovered a new ignimbrite from the Heise volcanic field, the 4.37 ± 0.08 Ma tuff of Birch Creek Sinks, in core from the U.S. Geological Survey (USGS) borehole 2-2A, which now represents the youngest outflow ignimbrite of the Heise volcanic field. Although recently, several intracaldera ignimbrites younger than 4 Ma have been identified in the volcanic field, the age range of outflow ignimbrites from the Heise volcanic field is now extended from 6.66 Ma to at least 4.37 Ma.
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Ghelichkhan, S., H.-P. Bunge, and J. Oeser. "Global mantle flow retrodictions for the early Cenozoic using an adjoint method: evolving dynamic topographies, deep mantle structures, flow trajectories and sublithospheric stresses." Geophysical Journal International 226, no. 2 (March 18, 2021): 1432–60. http://dx.doi.org/10.1093/gji/ggab108.

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SUMMARY During the Cenozoic, the Earth experienced multiple first-order geological events that are likely mantle flow related. These include the termination of large-scale marine inundation in North America in the Palaeocene, the late Tertiary rise of Africa relative to other continents and the long-wavelength tilting of Australia since the late Cretaceous, which occurred when the continent approached the southeast Asia subduction systems on its northward passage from Antartica. Here we explore a suite of eight high-resolution, compressible, global mantle flow retrodictions going back to 50 Ma, using an adoint method with $\approx$670 million finite elements. These retrodictions show for the first time that these events emerge jointly as part of global Cenozoic mantle flow histories. Our retrodictions involve the dynamic effects from an upper mantle low-viscosity zone, assimilate a past plate-motion model for the tangential surface velocity field, probe the influence of two different present-day mantle state estimates derived from seismic tomography, and acknowledge the rheological uncertainties of dynamic Earth models by taking in four different realizations for the radial mantle viscosity profile, two of which were published previously. We find the retrodicted mantle flow histories are sensitive to the present-day mantle state estimate and the rheological properties of the Earth model, meaning that this input information is testable with inferences gleaned from the geological record. For a deep mantle viscosity of $1.7\times 10^{22}$ Pa s and a purely thermal interpretation of seismic structure, lower mantle flow velocities exceed 7 cm yr–1 in some regions, meaning they are difficult to reconcile with the existence of a hotspot reference frame. Conversely, a deep mantle viscosity of $10^{23}$ Pa s yields modest flow velocities (< 3 cm yr–1 ) and stability of deep mantle heterogeneity for much of the retrodiction time, albeit at the expense that African uplift is delayed into the latest Neogene. Retrodictions allow one to track material back in time from any given sampling location, making them potentially useful, for example, to geochemical studies. Our results call for improved estimates on non-isostatic vertical motion of the Earth’s surface—provided, for instance, by basin analysis, seismic stratigraphy, landform studies, thermochronological data or the sedimentation record—to constrain the recent mantle flow history and suggest that mantle flow retrodictions may yield synergies across different Earth science disciplines.
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Thomson, Craig, Isam Wadhaj, Zhiyuan Tan, and Ahmed Al-Dubai. "Mobility Aware Duty Cycling Algorithm (MADCAL) A Dynamic Communication Threshold for Mobile Sink in Wireless Sensor Network." Sensors 19, no. 22 (November 12, 2019): 4930. http://dx.doi.org/10.3390/s19224930.

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The hotspot issue in wireless sensor networks, with nodes nearest the sink node losing energy fastest and degrading network lifetime, is a well-referenced problem. Mobile sink nodes have been proposed as a solution to this. They do not completely remove the hotspot problem though, with nodes the sink passes most closely still expending more energy than others. This study proposes a lightweight algorithm, located in the media access control (MAC) layer of static nodes and utilising knowledge of predictable sink node mobility. This is in order to create a dynamic communication threshold between static nodes and the sink, within which static nodes awaken, lessening competition for sink communication between nodes. In utilising predictable mobility and factors already known to the static node, such as location and interference range, there is no need for energy-consuming messaging. Analysis and simulation results, tested on a lightweight implementation of a carrier-sense multiple-access-based MAC protocol, show a significant improvement in energy consumption in both controlled and random environments, with frame delivery improved to the point where sink speed is negated. This is when compared to the existing duty cycling approach.
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LI, Yucheng, Wei WANG, and Xing WANG. "Research on the Mechanical Characteristics of H-section Steel Frame under the Action of Thermo Mechanical Coupling." E3S Web of Conferences 233 (2021): 03022. http://dx.doi.org/10.1051/e3sconf/202123303022.

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The research on the mechanical characteristics of concrete-filled steel tubular composite frame under high temperature fire environment is one of the research hotspots. In this paper, the finite element simulation software is used to analyze the concrete-filled steel tubular composite frame structure. The failure mode of the flexural deformation of the composite frame structure under high temperature fire environment is introduced. The simulation results of the deformation and displacement of the single-layer single span and two-layer two-span composite frame structure are deeply studied, including the different temperature field, structural field, structural field of each beam and column The results show that: with the temperature rising, the horizontal plastic strain, vertical displacement and local plastic region of beam and column are redistributed and changed in high temperature fire environment, and the flexural effect of two-story two-span concrete-filled steel tubular composite frame under different fire positions is analyzed. The results show that: with the temperature rising, the horizontal plastic strain at the concentrated load is not the results show that the deflection and deformation redistribution are obvious, and the deflection and deformation redistribution are obvious at the joint points of beams and columns. Finally, a mechanism is formed and destroyed. The flexure effect of mode 1 is larger than that of condition 2, which indicates that the flexural effect of two-story two span CFST composite frame under full cross-section fire is larger than that of condition 2 It should be better. The research results can provide reference value for the reinforcement and repair of CFST composite frame under high temperature fire.
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Thomson, Craig, Isam Wadhaj, Zhiyuan Tan, and Ahmed Al-Dubai. "A mobility aware duty cycling and preambling solution for wireless sensor network with mobile sink node." Wireless Networks 27, no. 5 (March 20, 2021): 3423–39. http://dx.doi.org/10.1007/s11276-021-02580-8.

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AbstractUtilising the mobilisation of a sink node in a wireless sensor network to combat the energy hole, or hotspot issue, is well referenced. However, another issue, that of energy spikes may remain. With the mobile sink node potentially communicating with some nodes more than others. In this study we propose the Mobility Aware Duty Cycling and Dynamic Preambling Algorithm (MADCaDPAL). This algorithm utilises an existing solution where a communication threshold is built between a mobile sink node using predictable mobility and static nodes on its path. MADCaDPAL bases decisions relating to node sleep function, moving to clear channel assessment and the subsequent sending of preambles on the relation between the threshold built by the static node and the position of the mobile sink node. MADCaDPAL achieves a reduction in average energy consumption of up to 80%, this when used in conjunction with a lightweight carrier-sense multiple access based MAC implementation. Maximum energy consumption amongst individual nodes is also brought closer to the average, reducing energy spikes and subsequently improving network lifetime. Additionally, frame delivery to the sink is improved overall.
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Dissertations / Theses on the topic "Hotspot reference frame"

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Riguzzi, F. "From the global scale to the Mediterranean plate kinematics." Thesis, 2008. http://hdl.handle.net/2122/5077.

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Plate motions with respect to the mantle represent the most direct evidence to understand the origin of plate tectonic processes. The research here described has the aim to improve the knowledge on the global scale plate kinematics in “absolute” reference frames, or better, relative to the mantle, incorporating both geological–geophysical and space geodesy data. Geophysical and geological signatures of subduction and rift zones independently show a global polarity of current plate motions, suggesting a west-ward displacement of the whole lithosphere relative to the underlying mantle. We analytically modeled this tectonic pattern in a suitable selected hotspot framework, taking into account variable depths of the hotspot source, obtaining new plate angular velocities and their uncertainties, by least squares inversion. Then, we focused our attention on the Italian area estimating the velocity field from continuous GPS observations both relative to Eurasia, and relative to the mantle, applying the global model previously estimated. However, the presence of the Apennine subduction, having more or less the same extent of the investigated area, makes locally less reliable our global model. Consequently, we applied a simple kinematic model to estimate the rates and spatial pattern of the subduction along the Apennines. The variable rates inferred after our analysis, better reconcile if the subduction process is conceived as a passive rather than active feature. Then, the analysis came back again to the global scale and to the basic argument if plates are passively riding along on the top of a mantle convection cell, or whether the plates themselves are active drivers. On the other hand, if plate motion occurs as an ordered undulated west-directed flow, the net-rotation of the lithosphere emerges as a passive process active at global scale, and then, it can be driven only by external forces. Thus, the last part of this research has been dedicated to find the experimental evidences connecting the tectonic processes to the Earth's rotation and the tidal drag.
Universita` La Sapienza Roma
Published
3.3. Geodinamica e struttura dell'interno della Terra
open
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Books on the topic "Hotspot reference frame"

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Livermore, Roy. The Paving Stone Theory of World Tectonics. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198717867.003.0003.

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Tuzo Wilson introduces the concept of transform faults, which has the effect of transforming Earth Science forever. Resistance to the new ideas is finally overcome in the late 1960s, as the theory of moving plates is established. Two scientists play a major role in quantifying the embryonic theory that is eventually dubbed ‘plate tectonics’. Dan McKenzie applies Euler’s theorem, used previously by Teddy Bullard to reconstruct the continents around the Atlantic, to the problem of plate rotations on a sphere and uses it to unravel the entire history of the Indian Ocean. Jason Morgan also wraps plate tectonics around a sphere. Tuzo Wilson introduces the idea of a fixed hotspot beneath Hawaii, an idea taken up by Jason Morgan to create an absolute reference frame for plate motions.
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Book chapters on the topic "Hotspot reference frame"

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Pilger, Rex H. "Hotspot Reference Frames: The “Necessity” of Mesoplates." In Geokinematics, 201–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-07439-8_11.

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Norton, Ian O. "Global hotspot reference frames and plate motion." In Geophysical Monograph Series, 339–57. Washington, D. C.: American Geophysical Union, 2000. http://dx.doi.org/10.1029/gm121p0339.

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Pilger, Rex H. "Proper Reference Frames: Hotspots, Paleomagnetism, Paleoclimate." In Geokinematics, 9–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-07439-8_2.

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Feeney, Margaret. "Collective invention: a travelling artist's perspective." In Creative tourism: activating cultural resources and engaging creative travellers, 38–45. Wallingford: CABI, 2021. http://dx.doi.org/10.1079/9781789243536.0005.

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Abstract People travel because they are searching. They are not content to download experience through mediated internet platforms, or to find themselves curated into a vat of preserved content, steeped in academic salt. Travelling is free of the dreary imperatives of everyday life; we step into the world to enlarge our frame of reference, not to be poked into another grid of curated meaning. Tourist hotspots everywhere have been heating up as fast as the climate, and unique cultural sensibilities and practices are perishing in the glare of the demands of the modern tourist. The researcher uses The Water Systems and the Stencil project as case studies in relation to the elements of effective workshop creation.
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"mean hotspot frame of reference." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 850. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_130984.

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"average hotspot frame of reference." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik, 86. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_13391.

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Morgan, W. Jason, and Jason Phipps Morgan. "Plate velocities in the hotspot reference frame." In Special Paper 430: Plates, Plumes and Planetary Processes, 65–78. Geological Society of America, 2007. http://dx.doi.org/10.1130/2007.2430(04).

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Cuffaro, Marco, and Carlo Doglioni. "Global kinematics in deep versus shallow hotspot reference frames." In Special Paper 430: Plates, Plumes and Planetary Processes, 359–74. Geological Society of America, 2007. http://dx.doi.org/10.1130/2007.2430(18).

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