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7篇 您的检索式:作者名="Joseph A. MASON"
    题名 作者 年代 出处 被引量
1Crescentic dune migration and stabilization: Implications for interpreting paleo-dune deposits as paleoenvironmental records显示文摘Paleo-dune deposits have been widely used as a proxy indicator of past dune activity, which is further used to reconstruct paleoclimates. However, recent studies have critically examined the reproducibility of dune chronologies and the complexity of paleo-dune deposits as paleoenvironmental records. This paper addresses questions on the paleoenvironmental implications of dune chronostratigraphies that have been raised by those reviews, in the specific case of crescentic dunes, using a case study from the Mu Us dune field, north-central China. The processes of turn-over and stabilization of relatively small crescentic dunes are first investigated by observational evidence. In combination with the analysis of a simplified sand preservation model and stratigraphic records, the effect of dune morphodynamics on sand preservation is demonstrated. It is especially evident that thick, nearly instantaneously deposited sand units record dune stabilization near the very end of a dune activity episode, while thin sand units may signal the preservation of sand deposited earlier in episodes of activity. Interpreting the distribution of luminescence ages that indicate sand deposition over time is not as simple as assumed in some previous work. Low frequency of sand ages could indicate an interval of either dune field stabilization or extensive dune activity but poor sand preservation. A peak of sand age frequency likely represents a shift in dune field activity towards stabilization, not a peak of active dune extent, especially if it partially overlaps with an independently identified interval of stabilization(e.g. one recorded by paleosols). The nature and magnitude of these biases in the distribution of sand ages over time are strongly affected by the magnitude of net sand accumulation, which is in turn related to sand supply, transport capacity and sand availability, and ultimately climate change. Relatively short dune stabilization and turn-over time(10~1 to 10~2 yrs) indicate that dune geomorphic processes can quickly respond to short-term disturbance, but the chronology of that response must be interpreted in light of how those processes influence age distributions.XU Zhiwei Joseph A. MASON LU Huayu YI Shuangwen ZHOU Yali WU Jiang HAN Zhiyong 2017Journal of Geographical Sciences2017,27,11:7
2A preliminary quantitative reconstruction of precipitation in southern Mu Us sandy land at margin of Asian monsoon-dominated region during late Quaternary显示文摘我们在场季风降水的第一个量的评价在在北中国的沙的陆地的迟了的 glacial-Holocene 期间,基于器官的碳从在亩的边缘的一个黄土沙序列的同位素的作文数据我们沙的土地。我们使用在季风降水和碳之间的关系是的现代土壤的同位素的作文类似物与次要的修正,重建降水回到 c。47 ka 以前。初步的结果显示年度季风降水在 8 ka 以后高,与 435 公里的一般水准;并且它与 194 公里的吝啬的价值在 18 和 8 ka 期间减少了。47-18 ka 的降水价值在二之间变化了。我们把重建的降水与另外的记录和 paleoclimatic 建模结果作比较,证明我们的记录同意从另外的来源,的季风降水的重建甚至捕获象更年轻的 Dryas 那样的短气候的事件。我们建议那太阳的发光,高纬度的温度 / 冰体积和本地蒸发一起在沙的陆地的修改潮湿。CHEN Yingyong LU Huayu YI Shuangwen ZHANG Enlou XU Zhiwei YU Kaifeng Joseph A. MASON 2015Journal of Geographical Sciences2015,25,3:6
3The Intracellular Cargo Receptor ERGIC-53 Is Required for the Production of Infectious Arenavirus, Coronavirus, and Filovirus Particles显示文摘Joseph P. Klaus Philip Eisenhauer Joanne Russo Anne B. Mason Danh Do Benjamin King Douglas Taatjes Cromwell Cornillez-Ty Jonathan E. Boyson Markus Thali Chunlei Zheng Lujian Liao John R. Yates Bin Zhang Bryan A. Ballif Jason W. Botten 2013Cell Host & Microbe2013,,5:1
4Growth Kinetics of Renal Masses: Analysis of a Prospective Cohort of Patients Undergoing Active Surveillance显示文摘Ross J. Mason Mohamed Abdolell Greg Trottier Christopher Pringle Joseph G. Lawen David G. Bell Michael A.S. Jewett Laurence Klotz Ricardo A. Rendon 2011European Urology2011,,:1
5Limited change in dune mobility in response to a large decrease in wind power in semi-arid northern China since the 1970s显示文摘Joseph A. Mason James B. Swinehart Huayu Lu Xiaodong Miao Phueng Cha Yali Zhou 2008Geomorphology2008,,3:1
6Summer Scientific Research for Teachers: The Experience and its Effect显示文摘Julie F. Westerlund Dana M. García Joseph R. Koke Teresa A. Taylor Diana S. Mason 2002Journal of Science Teacher Education2002,,1:1
7High resolution particle siz e analysis as a tool for interpreting incipient soils in loess显示文摘Thick loess deposits in the central U.S.A. often contain incipient soil zones that haveslightly darker color, more clay, and in most cases, stronger soil structure than surroundingunweathered loess. These incipient soil zones can be interpreted as the direct result of warmer orwetter climatic episodes, or as the sedimentary result of changes in local loess deposition rate.High-resolution particle size analyses by laser diffraction support a sedimentary explanation forincipient soil zones in Illinois and Nebraska, U.S.A. The soil zones contain more fine silt and claythan loess above and below. This could have resulted from a temporary reduction in the localloess deposition rate, leading to a greater relative contribution of far-traveled dust that containedmore fine silt and clay.Joseph A. MASON PeterM.JACOBS 1999Chinese Science Bulletin1999,44,S1:0
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