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Rupture behavior and deformation localization of the Kunlunshan earthquake (M_w7.8) and their tectonic implications

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Science China Earth Sciences 2008年第10期51卷 1361-1374页

作者： KLINGER Yann TAPPONNIER Paul institut de physique du Globe

Earthquake surface rupture is the result of transformation from crustal elastic strain accumulation to permanent tectonic deformation. The surface rupture zone produced by the 2001 Kunlunshan earth- quake (Mw7.8) on the Kusaihu segment of the Kunlun fault extends over 426 km. It consists of three relatively independent surface rupture sections: the western strike-slip section, the middle transten- sional section and the eastern strike-slip section. Hence this implies that the Kunlunshan earthquake is composed of three earthquake rupturing events, i.e. the Mw=6.8, Mw=6.2 and Mw≤7.8 events, respec- tively. The Mw≤7.8 earthquake, along the eastern section, is the main shock of the Kunlunshan earth- quake, further decomposed into four rupturing subevents. Field measurements indicate that the width of a single surface break on different sections ranges from several meters to 15 m, with a maximum value of less than 30 m. The width of the surface rupture zone that consists of en echelon breaks de- pends on its geometric structures, especially the stepover width of the secondary surface rupture zones in en echelon, displaying a basic feature of deformation localization. Consistency between the Quaternary geologic slip rate, the GPS-monitored strain rate and the localization of the surface rup- tures of the 2001 Kunlunshan earthquake may indicate that the tectonic deformation between the Ba- yan Har block and Qilian-Qaidam block in the northern Tibetan Plateau is characterized by strike-slip faulting along the limited width of the Kunlun fault, while the blocks themselves on both sides of the Kunlun fault are characterized by block motion. The localization of earthquake surface rupture zone is of great significance to determine the width of the fault-surface-rupture hazard zone, along which direct destruction will be caused by co-seismic surface rupturing along a strike-slip fault, that should be considered before the major engineering project, residental buildings and life

关键词： Tibetan Plateau Kunlunshan earthquake earthquake surface rupture zone deformation localization rupture behavior

A tunable diode laser absorption spectrometer for formaldehyde atmospheric measurements validated by simulation chamber instrumentation

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Journal of environmental Sciences 2012年第1期24卷 22-33页

作者： V.Catoire F.Bernard Y.Mbarki A.Mellouki G.Eyglunent V.Daёle C.Robert Laboratoire de physique et Chimie de l'environnement et de l'Espace (LPC2E) CNRS-Universit d'Orlans (UMR 6115)Observatoire des Sciences de l'Univers en rgion Centre (OSUC)3A Avenue de la Recherche Scientifique45071 Orlans Cedex 2France institut de Combustion ArothermiqueRactivit et Environnement (ICARE)CNRS (UPR 3021)Observatoire des Sciences de l'Univers en rgion Centre (OSUC)1C Avenue de la Recherche Scientifique45071 Orlans Cedex 2France

A tunable diode laser absorption spectrometer （TDLAS） for formaldehyde atmospheric measurements has been set up and validated through comparison experiments with a Fourier transform infrared spectrometer （FT-IR） in a simulation *** was generated in situ in the chamber from reaction of ethene with *** HCHO ro-vibrational line intensities （at 2909.71,2912.09 and 2914.46 cm-1） possibly used by TDLAS were calibrated by FT-IR spectra simultaneously recorded in the 1600–3200 cm-1 domain during ethene ozonolysis,enabling the on-line deduction of the varying concentration for HCHO in *** experimental line intensities values inferred confirmed the calculated ones from the updated HITRAN *** addition,the feasibility of stratospheric in situ HCHO measurements using the 2912.09 cm-1 line was *** TDLAS performances were also assessed,leading to a 2σ detection limit of 88 ppt in volume mixing ratio with a response time of 60 sec at 30 Torr and 294 K for 112 m optical *** part of this work,the room-temperature rate constant of this reaction and the HCHO formation yield were found to be in excellent agreement with the compiled literature data.

关键词： formaldehyde ethene ozonolysis in situ measurements stratosphere simulation chamber TDLAS FT-IR

Thermoluminescent response of gamma irradiated Na^(+)–Cu^(+) ionexchanged silicate glass in large dose range

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Nuclear Science and Techniques 2023年第5期34卷 22-32页

作者： Safa Toumi Khaled Farah Laboratoire de Physico‑Chimie des Matériaux Département de PhysiqueFacultédes Sciences de MonastirUniversitéde MonastirMonastirTunisia institut Supérieur du Transport et de la Logistique de Sousse Universitéde Sousse4023 SousseTunisia Laboratoire de recherche en energie et Matière Développement des Sciences Nucléaires(LR16CNSTN02)Centre National des Sciences et Technologies Nucléaires2020 Sidi‑ThabetTunisia

The introduction of metals into vitreous matrices is the origin of various interesting phenomena;in particular,the presence of copper ions in glass has been the subject of considerable research because of its numerous *** ion-exchange process is primarily used to introduce copper ions into glass *** thermoluminescence(TL)of silicate glass was studied to evaluate its potential as gamma-sensitive material for dosimetric applications;the effect of copper doping on the thermoluminescent sensitivity was investigated using the Cu-Na ion-exchange technique for different concentrations and doping conditions,over a wide dose range of 10 mGy to 100 *** results showed that Cu doping significantly improved the sensitivity of the glasses to gamma *** the ion-exchange,two peaks appeared in the glow curves at approximately 175 and 230°C,respectively,which possibly originated from the Cu^(+) centers,along with a weak TL peak at around 320℃.We also attempted to explain the origin of the observed thermoluminescence by exploiting the Electron paramagnetic resonance(EPR)*** results clearly show quenching of the TL emission with increasing copper *** present work indicates that the thermoluminescence response of these glasses to gamma rays can be reasonably measured in the range of 0.001-100 *** study also facilitates the understanding of the basic TL mechanism in this glass system.

关键词： Cu-Na ion-exchange Silicate glass Thermoluminescence Gamma irradiation Electron paramagnetic resonance

Conventional and enhanced Canonical Quantizations, Application to Some Simple Manifolds

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Journal of Modern Physics 2013年第11期4卷 1476-1485页

作者： Gabriel Y. H. Avossevou Jean V. Hounguevou Daniel Sabi Takou Unité de recherche en physique Théorique (URPT) Institut de Mathématiques et de Sciences Physiques (IMSP) Porto-Novo Bénin

It is well known that the representations over an arbitrary configuration space related to a physical system of the Heisenberg algebra allow to distinguish the simply and non simply-connected manifolds [arXiv:quant-ph/9908.014, arXiv:hep-th/0608.023]. In the light of this classification, the dynamics of a quantum particle on the line is studied in the framework of the conventional quantization scheme as well as that of the enhanced quantization recently introduced by J. R. Klauder [arXiv:quant-ph/1204.2870]. The quantum action functional restricted to the phase space coherent states is obtained from the enhanced quantization procedure, showing the coexistence of classical and quantum theories, a fundamental advantage offered by this new approach. The example of the one dimensional harmonic oscillator is given. Next, the spectrum of a free particle on the two-sphere is recognized from the covariant diffeomorphic representations of the momentum operator in the configuration space. Our results based on simple models also point out the already-known link between interaction and topology at quantum level.

关键词： Heisenberg Algebra Conventional Quantization enhanced Quantization Non Simply-Connected Manifolds Interaction Topology

Noncommutative Phase Space and the Two Dimensional Quantum Dipole in Background Electric and Magnetic Fields

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Journal of Modern Physics 2013年第10期4卷 1400-1411页

作者： Anselme F. Dossa Gabriel Y. H. Avossevou Unité de recherche en physique Théorique (URPT) Institut de Mathématiques et de Sciences Physiques (IMSP) Porto-Novo Bénin

The two dimensional quantum dipole springs in background uniform electric and magnetic fields are first studied in the conventional commutative coordinate space, leading to rigorous results. Then, the model is studied in the framework of the noncommutative (NC) phase space. The NC Hamiltonian and angular momentum do not commute any more in this space. By the means of the su(1,1) symmetry and the similarity transformation, exact solutions are obtained for both the NC angular momentum and the NC Hamiltonian.

关键词： Noncommutative (NC) Phase Space Quantum Dipole su(1 1) Symmetry Similarity Transformation

Variations on a Proof of a Borderline Bourgain-Brezis Sobolev Embedding Theorem

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Chinese Annals of mathematics,Series B 2017年第1期38卷 235-252页

作者： Sagun CHANILLO Jean VAN SCHAFTINGen Po-Lam YUNG department of mathematics Rutgers the State University of New Jersey 110 Frelinghuysen Road PiscatawayNJ08854USA institut de recherche en mathematique et en physique Universite catholique de Louvain Chemin du Cyclotron 2 bte L7.01.011348 Louvain-la-NeuveBelgium department of mathematics the Chinese University of Hong KongShatin.Hong Kong

This paper offers a variant of a proof of a borderline Bourgain-Brezis Sobolev embedding theorem on R^n. The authors use this idea to extend the result to real hyperbolic spaces H^n.

关键词： Bourgain-Brezis inequalities Divergence-free vector fields Sobolev inequalities Real hyperbolic space

PROPRIT de REPRSenTATION PRVISIBLE POUR LES SEMIMARTINGALES SPCIALES

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Science in China,Ser.A 1980年第7期 803-813页

作者：严加安 institut de mathématique Academia Sinica

Soit X une semimartingale spéciale, de décomposition canonique X= M+ A. On dit que X a la propriété de représentation prévisible, s’il en est ainsi de la martingale locale M. Dans cette note, on -caractérise la propriété de représentation prévisible pour une classe de semimartingales spéciales, et on généralise un théorème de Yoeurp-Yor. Comme une application de ces résultats, on donne une nouvelle démonstration du théorème de Fujisaki-Kallianpur-Kunita.

关键词： PROPRI SenTATION PR VISIBLE POUR LES SEMIMARTINGALES SP de REPR CIALES 落口云仓

A study on wildfire impacts on greenhouse gas emissions and regional air quality in South of Orléans,France

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Journal of environmental Sciences 2024年第1期135卷 521-533页

作者： Chaoyang Xue Gisèle Krysztofiak Yangang Ren Min Cai Patrick Mercier Frédéric Le Fur Corinne Robin Benoit Grosselin Véronique Daele Max RMcGillen Yujing Mu Valéry Catoire Abdelwahid Mellouki Laboratoire de physique et Chimie de l’environnement et de l’Espace(LPC2E) CNRS–UniversitéOrléans–CNES(UMR 7328)Orléans Cedex 245071France institut de Combustion AérothermiqueRéactivitéEnvironnement(ICARE)CNRSOrléans Cedex 245071France Research Centre for Eco-environmental Sciences Chinese Academy of SciencesBeijing 100085China Lig’Air-Association de surveillance de la qualitéde l’air en région Centre-Val de Loire Saint-Cyr-en-Val 45590France Mohammed V University RabatMorocco

Wildfire events are increasing globally which may be partly associated with climate change,resulting in significant adverse impacts on local,regional air quality and global *** September 2020,a small wildfire(burned area:36.3 ha)event occurred in Souesmes(Loiret-Cher,Sologne,France),and its plume spread out over 200 km on the following day as observed by the MODIS *** on measurements at a suburban site(~50 km northwest of the fire location)in Orléans and backward trajectory analysis,young wildfire plumes were *** increases in gaseous pollutants(CO,CH_(4),N_(2)O,VOCs,etc.)and particles(including black carbon)were found within the wildfire plumes,leading to a reduced air *** factors,defined as EF(X)=ΔX/ΔCO(where,X represents the target species),of various trace gases and black carbon within the young wildfire plumes were determined accordingly and compared with previous *** in the ambient ions(such as ammonium,sulfate,nitrate,chloride,and nitrite in the particle-and gasphase)and aerosol properties(e.g.,aerosol water content,aerosol p H)were also quantified and ***,we estimated the total carbon and climate-related species(e.g.,CO_(2),CH_(4),N_(2)O,and BC)emissions and compared them with fire emission *** biomass burning emission inventories have uncertainties in estimating small fire burned areas and *** instance,we found that the Global Fire Assimilation System(GFAS)may underestimate emissions(e.g.,CO)of this small wildfire while other inventories(GFED and FINN)showed significant *** that it is the first time to record wildfire plumes in this region,related atmospheric implications are presented and discussed.

关键词： Wildfire Air quality Emission factor Emission inventory VOLTAIRE supersite

Modeling Submicron Particles Collection in Laminar Forced Convection Gas Flow by a Rectangular Venturi Scrubber

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Open Journal of Air Pollution 2016年第1期5卷 10-26页

作者： Serge Wendsida Igo Kokou N’wuitcha Belkacem Zeghmati Xavier Chesneau Département energie Institut de Recherche en Sciences Appliquées et Technologies (IRSAT/CNRST) Ouagadougou Burkina Faso GPTE-LES Département de Physique Université de Lomé Lomé Togo Laboratoire de mathématiques et physique des Systèmes (LAMPS) Perpignan France

Venturi scrubbers are usually used for large particles cleaning in turbulent gaseous flow. In this work, submicron particles scrubbing in laminar forced convection dusty air flow in a rectangular venturi scrubber have been numerically simulated. Hydrodynamics effects and scrubbing process are investigated in detail. Results are presented as flow velocity, axial pressure, streamlines pattern, particles and droplets mass fraction profile, and collect efficiency. They show that venturi scrubbers can be efficient for submicron particles scrubbing. In fact, a better collect efficiency is obtained at high particles-droplets residence time, high ratio droplets concentration/particles concentration, low venturi diameter ratioand low Reynolds numbers. There is a critical Reynolds number value for which the collect efficiency becomes very low and tends to be constant.

关键词： Venturi Scrubber Submicron Particles Diffusion Laminar Flow Collect Efficiency