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  • 1
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    Magnetotelluric imaging beneath the Taiwan orogen: An arc-continent collision (2012)
    Wiley
    Details
    Publication Date: 2012-01-07
    Description: The Taiwan orogen has formed since the late Miocene by oblique collision between the Luzon Volcanic Arc on the Philippine Sea Plate, and the Eurasian continental margin. This oblique collision has produced an orogen that decreases in age from north to south, and permits study of the temporal evolution of an arc-continent collision. These factors make Taiwan a favorable location to study the process of arc-continent collision. The first long-period magnetotelluric (MT) measurements were recorded in Taiwan as part of the Taiwan Integrated Geodynamics Research (TAIGER) project in 2006–7. Measurements were made at 82 sites on three transects across south, central and north Taiwan, that span the breadth of the orogen and cross all major tectonic boundaries. Robust, remote reference processing of the MT time series data resulted in high-quality soundings that were modeled in both 2 and 3-dimensions. These MT models support predictions of lithospheric deformation (i.e., thick-skinned tectonics) beneath the Central Ranges in south and central Taiwan, but are inconsistent with predictions of orogen-scale thin-skinned models. The MT resistivity model for northern Taiwan is consistent with dewatering of the subducting Philippine slab, and with deformation described by the subducting-indenter tectonic model. Modeling the TAIGER MT data has definitively shown that conductive, and seismically active crustal structures, exist to 30+ km beneath the orogen. These conductive regions, interpreted as interconnected fluid, map pervasive zones of collisional deformation that are lithospheric in scale.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 2
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    Accelerating seismicity of moderate-size earthquakes before the 1999 Chi-Chi, Taiwan, earthquake: Testing time-prediction of the self-organizing spinodal model of earthquakes (2003)
    In:  Geophysical Journal International, Warszawa, Conseil de l'Europe, vol. 155, no. 1, pp. F1-F5, pp. 1166, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2003
    Keywords: Seismicity ; Earthquake ; China ; SOC ; Chaotic behaviour ; Earthquake precursor: prediction research ; Earthquake precursor: statistical anal. of seismicity ; GJI ; Non-linear effects ; seismic ; activation ; self-organizing ; spinodal ; model
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    The 1999 Chi-Chi, Taiwan, earthquake as a typical example of seismic activation and quiescence (2005)
    In:  Geophys. Res. Lett., Warszawa, Conseil de l'Europe, vol. 32, no. 22, pp. F1-F5, pp. L22315, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2005
    Keywords: Earthquake ; Statistical investigations ; Seismicity ; Pattern recognition ; Non-linear effects ; GRL ; 4425 ; Nonlinear ; Geophysics: ; Critical ; phenomena ; 4485 ; Self-organization ; 7209 ; Seismology: ; Earthquake ; dynamics ; (1242) ; 7223 ; Earthquake ; interaction, ; forecasting, ; and ; prediction ; (1217, ; 1242) ; 7230 ; Seismicity ; and ; tectonics ; (1207, ; 1217, ; 1240, ; 1242)
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Critical point theory of earthquakes: Observation of correlated and cooperative behavior on earthquake fault systems (2006)
    In:  Geophys. Res. Lett., Warszawa, Conseil de l'Europe, vol. 33, no. 18, pp. F1-F5, pp. L18302, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2006
    Keywords: Chaotic behaviour ; Modelling ; Seismicity ; Stress ; Landers ; Kobe ; Chi-Chi ; Hector ; Mine ; Earthquake ; Fore-shocks ; Omori ; Aftershocks ; scaling ; GRL ; 4425 ; Nonlinear ; Geophysics: ; Critical ; phenomena ; 4430 ; Complex ; systems ; 4435 ; Emergent ; phenomena ; 4485 ; Self-organization ; 7223 ; Seismology: ; Earthquake ; interaction, ; forecasting, ; and ; prediction ; (1217, ; 1242)
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Three New Abietane-type Diterpenes from the Bark of Cryptomeria japonica (2016)
    Wiley
    Details
    Publication Date: 2016-08-02
    Description: Three new abietane-type diterpenoids, 7 β -acetoxy-12-methoxyabieta-8,11,13-trien-6 α ,11-diol ( 1 ), 7 α -acetoxy-12-methoxyabieta-8,11,13-trien-6 α ,11-diol ( 2 ), and 6 α -acetoxy-12-methoxyabieta-8,11,13-trien-7 α ,11-diol ( 3 ), as well as two known abietane-type diterpenoids, 12-methoxyabieta-8,11,13-trien-6α,7β,11-triol ( 4 ) and 6α-acetoxy-12-methoxyabieta-8,11,13-trien-7β,11-diol ( 5 ), were isolated from the methanol extract of the bark of Cryptomeria japonica . Their structures were determined by analysis of spectroscopic data and comparison of NMR data with those of related metabolites. This article is protected by copyright. All rights reserved.
    Print ISSN: 0018-019X
    Electronic ISSN: 1522-2675
    Topics: Chemistry and Pharmacology
    Published by Wiley
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  • 6
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    Spatiotemporal investigation of seismicity and coulomb stress variations prior to the 2010 ML 6.4 Jiashian, Taiwan earthquake (2016)
    Wiley
    Details
    Publication Date: 2016-08-08
    Description: The 2010 M L 6.4 Jiashian earthquake struck southern Taiwan and caused some damage due to the strong ground shaking. Since the epicenter is located in a relatively low background seismicity area, we want to investigate seismicity rate changes associated with the Jiashian mainshock by applying the region-time-length (RTL) and pattern informatics (PI) algorithms. Both temporal and spatial results exhibit signatures of abnormal seismicity change related to the seismic activation and quiescence prior to the 2010 Jiashian mainshock. In addition, patch of abnormal seismicity changes coincides with the region with Coulomb stress change during the same period. Our study demonstrates that the epicenter area of the 2010 Jiashian earthquake experienced a long period of seismicity rate changes and stress accumulation, and thus suggests that both the variations in Coulomb stress and seismicity rate play fundamental roles in the nucleation process of impending earthquakes.
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
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    Precursory small earthquake migration patterns (2011)
    Wiley
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    Publication Date: 2011-09-01
    Description: Seismic precursors revealed by statistical physics methods are important for earthquake forecasting and helpful for understanding fault behaviour. One of the precursors, earthquake migration, has been observed in simulated models and rock experiments, as well as anecdotal observations for large earthquakes along major fault zones. However, there has been no systematic methodology for investigating earthquake migration in nature, and only a small number of studies have observed earthquake migration at large scales. In this work, we show that migration of small earthquakes towards the epicentre before large earthquakes can be visualized. We present a method for detecting small earthquake migration in the spatiotemporal domain, and retrospectively apply it to two recent examples of major earthquakes in Taiwan. We observe that anomalous seismicity occurs increasingly close to the epicentre as the occurrence time is approached. At that point, the bulk of the seismicity concentrates on the epicentre, accumulating stress on the rupture zone and leading to the full rupture. Our findings imply a new type of large-scale pre-seismic earthquake migration pattern that is complementary to the well-studied patterns of source-region activation and quiescence. Terra Nova, 00, 1–6, 2011
    Print ISSN: 0954-4879
    Electronic ISSN: 1365-3121
    Topics: Geosciences
    Published by Wiley
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  • 8
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    The effect of exogenous histone H1 on rat adipose-derived stem cell proliferation, migration, and osteogenic differentiation in vitro (2012)
    Wiley
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    Publication Date: 2012-04-16
    Description: Adipose-derived stem cells (ASCs) are of great interest for the development of novel cell therapies due to their ease of isolation and expansion, immunosuppressive activity and multilineage differentiation potential. However, the mechanisms underlying the therapeutic potential of ASCs remain to be elucidated. Others and we have shown that nuclear proteins such as histone H1 and high mobility group box 1 (HMGB1) play important roles in the maturation of dendritic cells (DCs). Furthermore, we previously demonstrated translocation of histone H1 from the nucleus to the cytoplasm and activation of mitogen-activated protein kinases (MAPKs) in DCs. In the present study, we confirmed that histone H1 does not alter the immunophenotype and immunosuppression potential of ASCs, but that histone H1 enhanced wound healing and increased interleukin (IL)-6 expression. Moreover, histone H1 treated-ASCs showed up-regulation of mitogen-activated protein kinases (MAPKs) extracellular-regulated kinase 1/2 (ERK1/2) and sequential NF-κB translocation. Finally, we found that culture in differentiation media supplemented with histone H1 enhanced ASC osteogenesis. In contrast, inhibition of histone H1 by small interfering RNA (siRNA) reduced osteogenic differentiation markers including ALP. These results suggest that histone H1 may be useful for induction of mesenchymal stem cells in tissue engineering and future potential ASC therapies. J. Cell. Physiol. © 2011 Wiley Periodicals, Inc.
    Electronic ISSN: 1097-4652
    Topics: Biology , Medicine
    Published by Wiley
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  • 9
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    Short-Term Forecasting of Taiwanese Earthquakes Using a Universal Model of Fusion-Fission Processes (2014)
    Springer Nature
    Details
    Publication Date: 2014-01-11
    Description: Predicting how large an earthquake can be, where and when it will strike remains an elusive goal in spite of the ever-increasing volume of data collected by earth scientists. In this paper, we introduce a universal model of fusion-fission processes that can be used to predict earthquakes starting from catalog data. We show how the equilibrium dynamics of this model very naturally explains the Gutenberg-Richter law. Using the high-resolution earthquake catalog of Taiwan between Jan 1994 and Feb 2009, we illustrate how out-of-equilibrium spatio-temporal signatures in the time interval between earthquakes and the integrated energy released by earthquakes can be used to reliably determine the times, magnitudes, and locations of large earthquakes, as well as the maximum numbers of large aftershocks that would follow. Scientific Reports 4 doi: 10.1038/srep03624
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Springer Nature
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  • 10
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    An investigation into the debris flow induced by Typhoon Morakot in the Siaolin Area, Southern Taiwan, using the electrical resistivity imaging method (2012)
    Oxford University Press
    Details
    Publication Date: 2012-01-11
    Description: SUMMARY A massive debris flow induced by Typhoon Morakot buried the southern Taiwan village of Siaolin in Jiaxian township and caused the deaths of an estimated 474 people. To reconstruct the mechanisms triggering the tragic debris flow, researchers must identify the subsurface structures of the debris-flow sediments. For this purpose, we conducted 2-D, electrical resistivity imaging (ERI) surveys along networked lines where the village once stood. With the imaging results, we identified three layers, including the basement of Yenshuikeng Shale, the newly accumulated debris-flow deposits; and the old fluvial deposits amid the basement and the debris-flow sediments. According to the resistivity results, the bottom of the debris-flow deposits is under the old ground surface in three eroded areas, C1, C2 and C3. Resistivity anomalies in the debris-flow sediment layer are well correlated with the locations of houses and the major roads in the piling area (P1) and the eroded area (C2). Hence these findings indicate that the basal erosion of the debris flow may have occurred in areas C1, C2 and C3 since a specific mass movement may undercut into the basal sediments or rocks and forms a filled trench in its basement. These eroded areas may be related to different events of mass movements due to their different orientations of basal erosion. From the resistivity image we estimated the volume of debris flow is underestimated for about 24.5 per cent to the estimated volume of the debris flow from digital terrain models (DTMs) in the study area. We conclude that the volume of a debris flow may be underestimated because of the basal erosion if only data from DTMs are used for its calculations and present new means for its correction by combining DTM and ERI results.
    Print ISSN: 0956-540X
    Electronic ISSN: 1365-246X
    Topics: Geosciences
    Published by Oxford University Press on behalf of The Deutsche Geophysikalische Gesellschaft (DGG) and the Royal Astronomical Society (RAS).
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