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Recent g.odynamics of major strike-slip zones

g.odesy and g.odynamics 2015年第5期6卷 361-383页

作者： trifonov vladimir g. Korzhenkov Andrey M. Omar Khaled M. g.olog.cal Institute Russian Academy of Sciences Institute of Physics of the Earth Russian Academy of Sciences

The subject of this study is strike-slip fault zones, where temporal variations of accumulation in strike-slip deformation complicate the standard process of deformation accu- mulation and release during.strong.earthquakes. These temporal variations are expressed in the E1 g.ab seg.ent of the Dead Sea Transform zone （DST, Eastern Mediterranean） and in the Talas-Ferg.na fault zone （Central Asia）. According.to g.obal Positioning.System （g.S） data, the strike-slip deformations within these zones are not now accumulating.or are accumulating.at a rate that is sig.ificantly less than their averag. rate during.the Holocene and Quaternary or the Pliocene-Quaternary. Simultaneously, weak transverse shortening.has been measured in both zones by g.S. In both of these zones, strong.earthquakes have not reg.stered within the XX century, yet epochs of intensified seismicity （strong.earthquakes） took place throug.out history. In the southern and central parts of the E1 g.ab zone, there is evidence of 30 strong.historical earthquakes of Ms ≥ 5.7; however, no instrumental earthquakes of Ms 〉 5 have been identified. The temporal distribution of seismic energ. released by these earthquakes demonstrates a 350 ± 50-year cycle. Values for the seismic energ.es released during.the peak phases of these cycles are approximated by a sinusoid that sug.ests the possibility of a 〉1800-year cycle （＂hyper-cycle＂）, which beg.n around the 3rd century, reached its maximum in the 12th century, and has continued until now. A combination of g.olog.cal, archaeoseismolog.cal, and g.odetic data show that the rate of sinistral strike-slip deformation varied in the fault zone, probably in conformity with the variation of seismicity during.the ＂hyper-cycle.＂ In the Talas-Ferg.na fault zone, trenching.and 14C dating.that was correlated with rig.t lateral offsets, g.ve a possible preliminary estimate of the averag. rates of the Late Holocene strike slip of about 10 mm per year, with a decrease in the SE directi

关键词： Active strike-slip faultsHistorical seismicity Paleoseismicity Temporal variations of focalmechanisms of earthquakes Rates of accumulation of strike-slipdeformation

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Late Cenozoic Tectonic Uplift Producing.Mountain Building.in Comparison with Mantle Structure in the Alpine-Himalayan Belt

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International Journal of g.osciences 2014年第5期5卷 497-518页

作者： vladimir g. trifonov Serg.y Yu. Sokolov g.olog.cal Institute of the Russian Academy of Sciences Moscow Russia

Tectonic uplift producing.recent mountain systems has spanned in the Alpine-Himalayan Belt the time interval from Olig.cene to Recent (the last 30 - 35 Ma), being.divided into two stag.s. During.the first stag., local uplands, usually not hig.er than middle-elevated mountains, rose and their total area increased. During.the second stag. (the last 5 - 2 Ma) this process was accompanied by a total uplift of the g.eater part of the belt. As a result, the rate of vertical movements increased, the recent mountain systems were formed, and the coarse molasses accumulated in the adjacent basins. Uplift of the land surface resulting.in formation of mountain topog.aphy is an isostatic reaction to decompaction of the upper spheres of the Solid Earth. Three factors of the decompaction are discussed in the paper. These are: I, collisional compression, resulting.in deformational thickening.of the Earth’s crust (folding. thrusting. etc.);II, partial replacing.of the lithosphere mantle by the lower-dense asthenosphere material and, as a result, decompaction of the uppermost mantle;and III, retrog.ade metamorphism of hig.-metamorphosed rocks within the lower crust and near the crust-mantle boundary and, as a result, decompaction of these rocks. These processes were initiated or facilitated by the lateral asthenosphere flows. According.to the seismic tomog.aphy data, the flows spread from the stationary developed zone of the rise of deep mantle material that is expressed in the recent structure as the Ethiopian-Afar super-plume. Reworking.the 400 - 700-km deep transition layer of the mantle, the sub-lithosphere flows could be enriched in sources of aqueous fluids. The flows and their fluids initiated factors II and III of the tectonic uplift and caused softening.and detachment of the lithosphere, facilitating.deformational thickening.of the Earth’s crust, i.e., the factor I. The latter produced uplands during.the entire Olig.cene-Quaternary development of the orog.nic belt, while the

关键词： Late Cenozoic Uplift Mountain Building Seismic Tomog.aphy Profiles Lithosphere Asthenosphere

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Journal of Biosciences and Medicines 2014年第4期2卷 19-23页

作者： Mikhail trifonov vladimir Rozhkov Sechenov Institute of Evolutionary Physiolog. and Biochemistry of the Russian Academy of Sciences Saint-Petersburg Russia

The probability density functions (pdf’s) and the first order structure functions (SF’s) of the pairwise Euclidean distances between scaled multichannel human EEg.sig.als at different time lag. under hypoxia and in resting.state at different ag.s are estimated. It is found that the hyper g.mma distribution is a g.od fit for the empirically derived pdf in all cases. It means that only two parameters (sample mean of EEg.Euclidean distances at a g.ven time lag.and relevant coefficient of variation) may be used in the approximate classification of empirical pdf’s. Both these parameters tend to increase in the first twenty years of life and tend to decrease as healthy adults g.tting.older. Our finding. indicate that such ag.-related dependence of these parameters looks like as ag.- related dependence of the total brain white matter volume. It is shown that 15 min hypoxia (8% oxyg.n in nitrog.n) causes a sig.ificant (about 50%) decrease of the mean relative displacement EEg.value that is typical for the rest state. In some sense the impact of the oxyg.n deficit looks like the subject g.tting.older during.short-term period.

关键词： EEg Development Hypoxia Probability Density Functions Hyper g.mma Distribution

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Computer Simulation of CD-Based Injection-Moulded Micro-Patterned Polymer Substrates for Cell Immobilization

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材料科学与工程（中英文版） 2011年第1期5卷 110-119页

作者： Dimitar trifonov Kostadin Kostadinov Muhammed Al-Wahab vladimir Kotev Institute of Mechanics Bulgarian Academy of Sciences Sofia 1113 Bulgaria Institute of Mobile Systems University Otto-von-Guericke Magdeburg 39106 Germany

The paper presents implementation of CD technolog. in injection moulding.of micro-pattern polymer substrates for application in microfluidic device used for cell immobilization, manipulation and subsequent investig.tion. The paper aims to develop a desig. concept of the micro-pattern polymer substrates with specially located thin-sections. Microstructure for positioning.of cells is located in the thin sections and is consistent with the possibility the substrate to be produced by injection molding. For this purpose an appropriate microstructure and the thickness of the substrate thin-sections are chosen according.the impact of g.ometrical parameters and the location of microstructure. They are optimized by study their dependence on the parameters of the g.te system and the substrate thickness on the process of mould filling. By the CD-based models developed a series of values of microstructure parameters and thin-section parameters were obtained. Relevant versions of the substrate desig. with cell-g.ooves are achieved. Results obtained states that the reduction the cell-g.ooves size and increasing.the number of the thin-sections makes the mould filling.difficult or impossible. In this case, it is advisable, the polymer substrate and thin-sections to be molded by injection molding. then cell-g.ooves can be further shaped by hot embossing.

关键词：细胞固定化聚合物基质注塑成型光盘图案计算机基板设计仿真

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