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Fractal Correction of Well Logging Curves

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Journal of China university of Geosciences 2001年第3期12卷 272-275页

作者： Li Qingmou Cheng Qiuming Institute of Geology & Geophysics, Chinese Academy of sciences, Beijing 100101 department of Earth and {2. Science, York university, Toronto, Ontario, Canada, M3J 1P3 Institute of Geology & Geophysics Chinese Academy of Sciences Beij ing 100101 department of Earth and atmospheric Science York University Toronto Ontario Canada M3J 1P3

It is always significant for assessing and evaluation of oil bearing layers, especially for well logging data processing and interpretation of non marine oil beds to get more accurate physical properties in thin and inter thin layers. This paper presents a definition of measures and the measure presents power law relation with the corresponded scale described by fractal theory. Thus, logging curves can be reconstructed according to this power law relation. This method uses the local structure nearby concurrent points to compensate the average effect of logging probes and measurement errors. As an example, deep and medium induced conductivity (IMPH and IDPH) curves in ODP Leg 12. Hole 797C are reconstructed or corrected. Corrected curves are with less adjacent effects through comparison of corrected curves with original one. And also, the power spectra of corrected well logging curve are abounding with more resolution components than the original one. Thus, fractal correction method makes the well logging more resoluble for thin beds.

关键词： fractal thin bed well logging singularity of well logging well logging correction.

Nano-size Distribution of Aerosol from Agricultural Residues Burning Matched to Optical Properties:A Laboratory Study

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Nano-size Distribution of Aerosol from Agricultural Residues...

Three-dimensional Distribution of the Escape Photons of Hα Flares

第五届全国环境化学大会

作者： Dawei Hu~1 Xingnan Ye~1 Hefeng Zhang~1 Tiantao Cheng~(1,2.) Jianmin Chen~(1*) Zhiwei Han~2.Renjian Zhang~2.(1.Center of atmospheric Chemistry Study,department of Environmental Science & Engineering, Fudan {2.,Shanghai 2.0433,China 2.Key Laboratory of Regional Climate-Environment Research for Temperate East Asia,Institute of atmospheric Physics,Chinese Academy of sciences, Beijing 10002.,China)

＜正＞Laboratory measurements were conducted with a chamber to determine the size distribution and scattering coefficient of aerosol emitted from the rice straw and corn stover burning,two major agricultural residues in *** size distributions of those rice-burned and corn-burned aerosols are well characterized by unimodal lognormal functions,with a remarkable feature of accumulation *** fresh smokes’ median diameters of number distribution centered at 0.15±0.03μm,0.2.±

关键词： Biomass burning Nano-size distribution Optical properties Emission factors

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Chinese Journal of Astronomy and Astrophysics 2006年第1期6卷 87-95页

作者： Ming-Guo Sun Zhong-Quan Qu Zhi Xu Xiao-Yu Zhang Cheng-Lin XU Shuai Wang Chun-Lan Jin Yunnan Astronomical Observatory/National Astronomical Observatories Chinese Academy ofn Sciences Kunming 650011 department of Astronomy Nanjing University Nanjing 210093 Graduate university of the Chinese Academy of sciences Beijing 100049

A technique for obtaining a three-dimensional distribution of received photons in Hα flares in the solar atmosphere is presented. It is well known that during flares hydrogen atoms in the chromosphere and photosphere are excited （even ionized） by the downward heating of non-thermal particles and then emit Hα photons. We trace back these Hα photons to their original layers by use of the contribution function in the theory of spectral line formation, and so acquire their three-dimensional （3D） distribution. This technique is applied to the two-ribbon flare of 2.02.January 2.. The atmospheric models are obtained by fitting the ＂quasi-profiles＂ with the help of the generally used model atmospheres. Since the variety of the 3D images reflects the response of the atmospheric layers to the impact of energy transport, an analysis of the development of the flare is given through a comparison of the 3D images with the 2. temperature distribution.

关键词： line: formation - radiative transfer - sun: flares

Diurnal Variations of Precipitation over the South China Sea Using TRMM Observations

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Diurnal Variations of Precipitation over the South China Sea...

INTERDECADAL CHANGE OF KOREA LANDFALLING TROPICAL CYCLONE FREQUENCY AND ITS POSSIBLE ASSOCIATION WITH PDO

第七次全国动力气象学术会议

作者： Li Weibiao~1 Luo Cong~1 Wang Dongxiao~2.Lei Ting~1 and Liu Zijie~1 1.department of atmospheric {2.,Sun Yat-Sen university,Guangzhou,5102.5,China 2.LED,South China Sea Institute of Oceanology,Chinese Academy of {2.,Guangzhou 510301,China

＜正＞In this study,diurnal variations of precipitation and related mechanisms over the South China Sea（SCS）are studied using the TRMM *** have found that: 1)The precipitation over the SCS has large diurnal variations with considerable regional features and seasonal *** variations are significant all the year around over the southern of the *** the middle to northern of the SCS,however,diurnal variations are significant only in summer and *** the northern of the SCS precipitation peaks in early morning,while over the southern of the SCS it has two diumal peaks:one in the early morning and another in the late afternoon. 2.The diurnal variations of precipitation over the SCS are related to the activity of the SCS summer monsoon and the ENSO *** diurnal variations of precipitation over the SCS become much more *** addition,after the onset of the SCS summer monsoon,the late afternoon precipitation increases remarkably over the northern of the ***,it is interesting to note that the early morning rainfalls are much more significant during La Nina years than those during El Nino years. 3)The land-sea breezeis responsible forthe diurnal cycle over the Kalimantan Island and its offshore area while the"static radiation-convection" mechanisms may result in the early morning rainfall peak over the SCS.

关键词： Precipitation Diurnal Variations South China Sea

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Tropical Cyclone Research and Review 2016年第3期5卷 58-71页

作者： Jae-Won Choi Yumi Cha Hae-Dong Kim State Key Laboratory of Numerical Modeling for atmospheric sciences and Geophysical Fluid Dynamics,Institute of atmospheric Physics,Chinese Academy of sciences National Institute of Meteorological sciences department of Global Environment,Keimyung university State Key Laboratory of Numerical Modeling for atmospheric sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of Sciences National Institute of Meteorological sciences department of Global Environment Keimyung University

The present study verified that Korea landfalling tropical cyclone(TC) frequency was rapidly increased since 1981 through the statistical change-point analysis. The increase was due to the formation of anomalous southerlies around Korea from the low latitude ultimately because anomalous cyclone was strengthened in East Asia continent due to the movement of western North Pacific subtropical high(WNPSH) to the east whereas anomalous anticyclone was strengthened in the western North Pacific. The anomalous southerlies played a role in steering flow that moved TCs generated in the subtropical western North Pacific to Korea. In order to determine the cause of strengthening of anomalous cyclone in East Asia continent, a snow depth during the preceding spring(March-May) was analyzed. The analysis result showed that most regions in East Asia had lower snow depth than that before 1981. Thus, anomalous cyclone can be developed in the region during summer due to heating in East Asia continent, which was started from the preceding spring, thereby forming a steering flow of anomalous southerlies that can move TCs into Korea. Furthermore, a correlation analysis between Pacific Decadal Oscillation(PDO) and Korea landfalling TC frequency verified that negative correlation was somewhat stronger after 1981.

关键词： Korea tropical cyclone statistical change-point analysis snow depth Pacific Decadal Oscillation

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透明弹性薄膜调节可见光透射比的试验研究

太阳能学报 2003年第6期24卷 795-800页

作者：张文赵大庆华北科技学院机电系北京 101601 清华大学机械系北京100084

总结了透明弹性薄膜调节可见光的研究试验。基本原理是当光通过凸凹不平的透明薄膜时,在薄膜表面要发生散射,散射能力大致与薄膜表面粗糙度成正比。当通过外力来改变薄膜表面的粗糙度时,就可以改变薄膜的散射比,也即改变了薄膜的直射透... 详细信息

总结了透明弹性薄膜调节可见光的研究试验。基本原理是当光通过凸凹不平的透明薄膜时,在薄膜表面要发生散射,散射能力大致与薄膜表面粗糙度成正比。当通过外力来改变薄膜表面的粗糙度时,就可以改变薄膜的散射比,也即改变了薄膜的直射透射比,从而对透射光强进行一定的调节。实验表明:采用适当硬度的透明弹性薄膜,在一个大气压条件下,薄膜的直射透射比的调节范围可从最小33%达到最大86 7%,透射比的改变时间不超过1秒。这一效果比目前所报道的电致变色调光的范围要大,速度要快,视觉效果也好的多,有一定的应用前景。

关键词：粗糙度直射透射比透明弹性薄膜

有源等离子体在开放大气环境下的反应扩散过程研究

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物理学报 2011年第2期60卷 451-457页

作者：尹增谦赵盼盼董丽芳房同珍华北电力大学数理系河北大学物理科学与技术学院中国科学院物理研究所

利用一维模型用数值模拟的方法,研究了低气压开放环境下大气等离子体在存在等离子体源的情况下的反应扩散过程.得到了考虑化学反应、扩散以及漂移共同作用下的大气等离子体的主要成分随等离子体注入流量的变化规律及一定流量情况下主要... 详细信息

利用一维模型用数值模拟的方法,研究了低气压开放环境下大气等离子体在存在等离子体源的情况下的反应扩散过程.得到了考虑化学反应、扩散以及漂移共同作用下的大气等离子体的主要成分随等离子体注入流量的变化规律及一定流量情况下主要带电成分随时空的演化规律.将数值模拟结果与一个近似解析公式相衔接,估计达到稳态时维持一定电子密度所需要的等离子体流量,可据此进一步估计所需功率.

关键词：大气等离子体等离子体源数值模拟反应扩散过程

Strengthening of tropical Indian Ocean teleconnection to the Northwest Pacific since the mid-1970s: An atmospheric GCM study

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Strengthening of tropical Indian Ocean teleconnection to the...

ZONAL MEAN STRUCTURES OF THE EXTRATROPICAL TROPOSPHERE

第七届全国优秀青年气象科技工作者学术研讨会

作者： Gang Huang1, Kaiming Hu1,2. Shang-Ping Xie31LASG, Institute of atmospheric Physics, Chinese Academy of sciences, Beijing,China2.raduate {2. of Chinese Academy of sciences, Beijing, China3International Pacific Research Center and department of Meteorology, {2. of Hawaii at Manoa, Honolulu, Hawaii, USA

The correlation of Northwest （NW） Pacific climate anomalies during summer with El Nino/Southern Oscillation （ENSO） in the preceding winter strengthens in the mid-1970s and remains high since. This study investigates the hypothesis that the tropical Indian Ocean （TIO） response to ENSO is key to this interdecadal change,using a 2.-member ensemble simulation with the Community atmospheric Model version 3 （CAM3） forced by the observed history of sea surface temperature （SST） for 1950-2.00. In the model hindcast, the TIO influence on the summer NW Pacific strengthens in the mid-1970s, and the strengthened TIO teleconnection coincides with an intensification of summer SST variability over the TIO. This result is corroborated by the fact the model’s skills in simulating NW Pacific climate anomalies during summer increase after the 1970s shift. During late spring to early summer, El Nino-induced TIO warming decays rapidly for the epoch prior to the 1970s shift but grows and persists through summer for the epoch after. This difference in the evolution of the TIO warming determines the strength of the TIO teleconnection to the NW Pacific in the subsequent summer. An anti-symmetric wind pattern develops in spring across the equator over the TIO, and the associated northeasterly anomalies aid the summer warming over the North Indian Ocean by opposing the prevailing southwest monsoon. In the model, this anti-symmetric, spring wind pattern is well-developed after but absent before the 1970s shift.

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Acta meteorologica Sinica 1993年第2期7卷 162-175页

作者： Y.L.McHall department of Earth,atmospheric and Planetary {2.,MIT,MA 02.39,USA

The study of mean circulation fields requires evaluation of eddy foreings in the *** to the difficulty in calculating the eddy forcings on theory,the mean state equations including the eddy forcings were used mostly for diagnostic studies *** the geostrophic perturbation solutions obtained by McHall (1991a),we may deal with theoretically the eddy fluxes and their *** allows us to employ the mean state equations for the study of mean circulation *** will be found that the time averaged zonal mean structure and circulation of the troposphere at middle and high latitudes can be reproduced basically in terms of the mass and momentum balances in geostrophic wave circulations.

关键词： extratropical troposphere mean circulation fields mean state equations