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Multiple time scale evaluation of the energy balance during the maize growing season,and a new reason for energy imbalance

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science china {2. sciences 2009年第1期52卷 108-117页

作者： GUO JianXia1,2.BIAN LinGen3 & DAI YongJiu2.1 Meteorological Observation Center of china Meteorological Administration,beijing 100081,china 2.State Key Laboratory of Remote Sensing science,school of Geography and Remote Sensing science,beijing Normal university,beijing 100875,china 3 Chinese Academy of Meteorological sciences,beijing 100081,china Meteorological Observation Center of china Meteorological Administration Beijing 100081 China State Key Laboratory of Remote Sensing science School of Geography and Remote Sensing Science Beijing Normal University Beijing 100875 China

Energy imbalance is a common problem associated with the measurement of surface energy using the eddy covariance *** the evaluation of the energy balance,people usually pay more attention to the statistical result that the effective energy(the sum of sensible and latent heat) is systematically lower than the available energy(the difference of net radiation and ground heat flux).However,little attention has been paid to the existence of the reversed situation when the effective energy is larger than the available energy or their contribution to the overall energy closure *** this paper,based on the analysis of the energy balance on multiple time scales across the maize growth season,we conclude that the non-synchronization of energy components is the main reason for the existence of the reversed *** shifting the phase of the effective energy components half an hour ahead,the rates of energy closure over all time scales are improved and dramatically reduce the number of the half-hourly samples when the energy ratio exceeds 1 or is below *** to the characteristics of the energy distribution and transformation over multiple time scales,latent heat is always the main type of energy cost,and the residual of the energy balance increases with the growth of the maize plant surpassing the sensible heat for seventy *** is suggested that the heat storage and photosynthetic energy play an important role in the energy balance during the growing period of maize.

关键词： maize energy balance multiple time scale energy hysteresis

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*** Geological Relic Types and Functional Zoning Establishment

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地学前缘 2009年第S1期16卷 291-292页

作者： Sizuo Wang,Jianping Zhang,Chen Ni,Tingting Dong school of the earth {2.s and resources,china university of geosciences(beijing),beijing 100083,china.

Many of the beautiful geological features are formed by Jurrasic granites,such as granite picotgraphic stone, granite peak cluster,scouring ditches,miarolitic cavity, islands,beaches,sea caves and so *** are distinctive Shezu cultural relics and ancient architecttures preserved from Tang and Song *** a practical point of view that the development and protection of geoheritage need in accordance with the diversity of landforms and the uniqueness of culture,this

关键词： Mt.Taimushan functional zoning geoheritage conservation

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External Influence to Geochemical Assessment of the Land Quality—Atmospheric Dry and Wet Deposition

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地学前缘 2009年第S1期16卷 305-306页

作者： Wei Wang,Zhongfang Yang,Qingye Hou,Rongjie Bai school of earth {2.s and resources,china university of geosciences(beijing),beijing 100083,china.

The heavy metals in the atmosphere mainly come from the gas and dust which involved by the energy costs,transport,metallurgy and building materials *** than the element of Hg,the heavy metals come into the atmosphere ... 详细信息

关键词： geochemical assessment atmospheric deposition deposition fluxes external influence

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Prediction method for October 2.03 solar storm

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science china(Technological sciences) 2006年第5期49卷 629-640页

作者： XIE Yanqiong1, 2. 3, WEI Fengsi1, FENG Xueshang1 & ZHONG Dingkun1, 2.1. State Key Laboratory of Space Weather, Center for Space science and Applied Research, Chinese Academy of sciences, {2. 100080, china 2. Graduate school, Chinese Academy of sciences, {2. 100039, china 3. Institute of Meteorology, PLA university of science and Technology, Nanjing 2.1101, china State Key Laboratory of Space Weather Center for Space Science Applied Research Chinese Academy of Sciences Beijing 100080 China Graduate school Chinese Academy of Sciences Beijing 100039 China Institute of Meteorology PLA University of Science Technology Nanjing 211101 China

Aiming at two intense shock events on October 2. and 2., 2.03, this paper presents a two-step method, which combines synoptic analysis of space weather ——“observing” and quantitative prediction ——“palpating”, and then uses it to test predictions. In the first step of “observing”, on the basis of observations of the solar source surface magnetic field, interplanetary scintillation (IPS) and ACE spacecraft, we find that the propagation of the shocks is asymmetric relative to the normal direction of their solar sources, and the earth is located near the direction of the fastest speed and the greatest energy of the shocks. As the two fast ejection shock events, the fast explosion of coronal mass of the extremely high temperature, the strong magnetic field, and the high speed background solar wind are also helpful to their rapid propagation. In the second step of “palpating”, we adopt a new membership function of the fast shock events for the ISF method. The predicted results show that for the onset time of the geomagnetic disturbance, the relative errors between the observational and the predicted results are 1.8% and 6.7%; and for the magnetic disturbance magnitude, the relative errors are 4.1% and 3.1%, re- spectively. Furthermore, the comparison among the predicted results of our two-step method with those of five other prevailing methods shows that the two-step method is advantageous. The results tell us that understanding the physical features of shock propagation thoroughly is of great importance in improving the prediction precision.

关键词： solar storm, interplanetary shock, interplanetary scintillation, two-step method, ISF method.

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Effective solutions to a global 3D visual system in networking environments

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science china {2. sciences 2005年第11期48卷 2032-2039页

作者： ZHANG Liqiang1,2. ZHANG Yan3, YANG Chongjun2. LIU Suhong1, REN Yingchao2. RUI Xiaoping2.& LIU Donglin2.1. State Key Laboratory of Remote Sensing sciences, school of Geography and Remote Sensing, {2. Normal university, {2. 100875, china 2. State Key Laboratory of Remote Sensing sciences, Institute of Remote Sensing Applications, Chinese Academy of sciences, {2. 101001, china 3. Institute of Geographical sciences and Natural resources Research, Chinese Academy of sciences, {2. 101001, china 1. State Key Laboratory of Remote Sensing sciences School of Geography and Remote Sensing Beijing Normal University 100875 Beijing China 2. Chinese Academy of sciences State Key Laboratory of Remote Sensing SciencesInstitute of Remote Sensing Applications 101001 Beijing China 3. Institute of Geographical sciences and Natural resources Research Chinese Academy of Sciences 101001 Beijing China

The development of Web-based global 3D visual system has made progresses. However, there exist few mature and effective ways for managing, transmitting and visualizing massive spatial data. Based on the related work, the paper illustrates the ellipsoidal quadtree technique for rapid access multi-scale and multiple level geographical data, integrates the streaming with level-of-detail rendering method for transmitting the data on the network, and im-plements large-scale terrain surface simplification using M-band wavelet transforms and mul-tiresolution triangulations. We fulfil a web-based global terrain visual system using COM com-ponents on the basis of the above techniques. The system has a good prospect in the military simulation and city plans.

关键词： massive spatial data, streaming transmission, system architecture, M-band wavelet

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The Construction of Natural Disaster Database of Alxa and Periodicity Analysis

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地学前缘 2009年第S1期16卷 300-301页

作者： Yan Zheng,Mingzhong Tian,Siwen Liu,Chao Ma school of the earth {2.s and resources,china university of geosciences(beijing),beijing 100083,china.

A compilation of all meaningful historical data of natural-disasters taken place in Alxa of inner-Mongolia is used here for the construction of a 65 Ma high precision *** data in the database are divided into subsets ... 详细信息

关键词： Alxa natural disaster databases periodicity

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A new Early Cretaceous lizard with well-preserved scale impressions from western Liaoning, china

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Progress in Natural science:Materials International 2005年第2期15卷 67-73页

作者： JI Shu’an*(school of earth and Space {2.s, Peking university, beijing 100871, china) school of earth and Space {2.s Peking University Beijing 100871 China

A new small lizard, Liaoningolacerta brevirostra gen. et sp. nov., from the Early Cretaceous Yixian Formation of western Liaoning is described in detail. The new specimen was preserved not only by the skeleton, but also by the exceptionally clear scale impressions. This lizard can be included within the taxon Scleroglossa based on its 2. or more presacrals, cruciform interclavicle with a large anterior process, moderately elongated pubis, and slightly notched distal end of tibia. The scales vary evidently in size and shape at different parts of body: small and rhomboid ventral scales, tiny and round limb scales, and large and longitudinally rectangular caudal scales that constitute the caudal whorls. This new finding provides us with more information on the lepidosis of the Mesozoic lizards.

关键词： new genus Squamata skeleton lepidosis Early Cretaceous western Liaoning

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Prediction of Enthalpies of Fusion for Divalent Rare earth Halides Based on Modeling by Artificial Neural Networks and Pattern Recognition

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International Journal of minerals,Metallurgy and Materials 1999年第1期13卷 24-26页

作者： Yimin Sun Zhiyu Qiao Minghong He(Applied science school, {2. of science & Technology beijing, beijing 100083, china)(National Natural science Foundation of china, beijing 100083, china) Applied science school University of Science and Technology Beijing Beijing 100083 China National Natural science Foundation of china Beijing 100083 China

The artificial neural network (ANN) and the pattern recognition were applied to study the correlation of enthalpies of fusion for divalent rare earth halides with their microstructural parameters,such as ionic radius and electronegativity. The model,represented by a back-propagation netal network, was trained with a 12.set of published data for divalent rare earth halides and then was used to predict the unknown ones. Also the criterion equations were ptesented to determine the enthalpies of fuSion for divalent rare earth halides using pattern recognition in mis work. The results from the model in ANN and criterion equations are in very good agreement with reference data.

关键词： BP neural network pattern recognition enthalpy of fusion divalent rare earth halides microstructural parameters

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SHRIMP U-Pb dating and Hf isotopic analyses of Middle Ordovician meta-cumulate gabbro in central Qiangtang, northern Tibetan Plateau

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science china {2. sciences 2010年第5期53卷 657-664页

作者： ZHAI QingGuo1 WANG Jun1, LI Cai2.& SU Li3 1 Institute of Geology, Chinese Academy of Geological sciences, beijing 100037, {2. 2.College of earth sciences, Jilin university, Changchun 130061, {2. 3 The Geological Laboratory Center and State Key Laboratory of Geological Processes and mineral resources, {2. university of Geo- sciences, beijing 100083, {2. 1. Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China2. College of Earth Sciences Jilin University Changchun 130061 China3. The Geological Laboratory Center and State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Beijing 100083 China

Metabasites consisting of metamorphic ultra-mafic rocks, cumulate gabbro, gabbro (diabase), basalt, and plagiogranite are exposed at the Taoxinghu area in central Qiangtang, northern Tibetan Plateau. Zircon SHRIMP U-Pb dating for the cumulate gabbro yields a weighted mean age of 467±4 Ma, which is the oldest and most reliable magmatic age in this area. Zircon 176Hf/177Hf ratios range from 0.2.2.15 to 0.2.2.57, with εHf(t) values of 5.02.0.2., indicating that the cumulate gabbro was mainly derived from the depleted mantle. In addition, geochemical data of metabasites suggest that they have similar characteristics to those in the mid-ocean ridge basalts (MORB). The Taoxinghu metabasites may represent the fragment of Early Paleozoic ophiolite in the "Central Uplift" of the Qiangtang, northern Tibetan Plateau.

关键词： Qiangtang cumulate gabbro SHRIMP dating Hf isotope

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Zircon LA-ICPMS study and petrogenesis simulation of Dahuabei pluton in the Wulashan area,Inner Mongolia

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Progress in Natural science:Materials International 2009年第12期19卷 1727-1737页

作者： Dapeng Li~(a,b),Yuelong Chen~(a,*),Liemeng Chen~c,Zhong Wang~d,Jinbao Liu~d a school of earth {2.s and resources,china university of geosciences(beijing),beijing 100083,china b State Key Laboratory of Geological Process and mineral resources,china university of geosciences,Wuhan 430074,china c State Key Laboratory of Ore Deposit Geochemistry,Institute of Geochemistry,Chinese Academy of {2.s,Guiyang 550002.china d Geological Survey Institute of Inner Mongolia,Hohhot 010010,china [a]school of earth {2.s and resources China University of Geosciences (Beijing) Beijing 100083 China [b]State Key Laboratory of Geological Process and mineral resources China University of Geosciences Wuhan 430074 China [c]State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China [d]Geological Survey Institute of Inner Mongolia Hohhot 010010 China

Dahuabei pluton in the Wulashan area,Inner Mongolia,is an alkaline and peraluminous granitic ***-ICPMS U-Pb dating of zircons indicates that this pluton crystallized at 330±10 *** pluton did not experience apparent zircon *** consistent temperatures between Zr saturation(765℃) and the average zircon-rutile Ti equilibrium(780℃),together with zircon ages and their CL images,indicated that there were no inherited zircons in this *** the simulation of the dry-system crystallization process of magma cooling at 2.0 MPa and 1100-709℃,the phase diagram and composition evolution tendency of different phases were *** magma reached its liquidus at 1069℃.Sanidine was the first crystallized phase;at 709℃the residual magma was less than 4%,and the range of 1069-719℃should be the most suitable approach to the real *** is shown that at least some part of the pluton underwent such isobaric equilibrium crystallization processes during its crystallization.

关键词： Dahuabei pluton Petrogenesis simulation Geochemistry Zircon LA-ICPMS

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