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PRELIMINARY STUDY ON TRANSPORTATION AND DISTRIBUTION OF SEDIMENT LOAD IN THE YANGTZE ESTUARY

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International Journal of Sediment Research 1998年第4期 63-73页

作者： Qing HE 2.and Caixing YUN 3

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｖａｓｔａｒｅａｏｆｔｈｅＹａｎｇｔｚｅｅｓｔｕａｒｙ，ｕｎｄｅｒｔｈｅｃｏｍｍｏｎａｃｔｉｏｎｏｆｖａｒｉｏｕｓｆａｃｔｏｒｓ：ｓｕｃｈａｓｔｈｅｃｏｎｆｌｕｅｎｃｅｏｆｔｈｅＹ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＩｎｔｈｅｖａｓｔａｒｅａｏｆｔｈｅＹａｎｇｔｚｅｅｓｔｕａｒｙ，ｕｎｄｅｒｔｈｅｃｏｍｍｏｎａｃｔｉｏｎｏｆｖａｒｉｏｕｓｆａｃｔｏｒｓ：ｓｕｃｈａｓｔｈｅｃｏｎｆｌｕｅｎｃｅｏｆｔｈｅＹａｎｇｔｚｅＲｉｖｅｒｗｉｔｈｔｈ...

关键词： The Yangtze estuary Sediment load Remote sensing techniques

Diagnosis Analysis of One Cold Airflow Snowfall in Shandong Peninsula

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Meteorological and Environmental Research 2011年第11期2卷 34-36页

作者： LI Bing-wen 1,LI Jun 2.WANG Qing-hua 1,YANG Kun 1 1.Linyi Meteorological Bureau in Shandong Province,Linyi 2.6004.china 2.Cangshan Meteorological Bureau in Shandong Province,Cangshan 2.7700,china

[Objective]One cold airflow snowfall in Shandong Peninsula was analyzed.[Method] Using conventional weather observation data,the NCEP /NCAR 1° ×1° grid point by 6 h in data analysis,the synoptic weather dynamics principle and diagnosis analysis method,the cold airflow snowfall in Shandong Peninsula on December 4.2.08 to 6 th was analyzed and summarized.[Result]The results showed that the cold deep groove of large scale circulation form caused the cold airflow snowfall in Shandong *** the 850 hPa mistral wind strengthened,cold airflow snow in Shandong Peninsula will be *** the eruption of snowstorm,the relative humidity from 92. to 750 hPa was larger than 90%.The area formed by 90% relative humidity line corresponded with the period of heavy *** changes of relative humidity line reflected the changes of warm and wet air transmitting to the higher *** more warm and wet air being sent to the upper air,the more conductive to the formation of cold airflow snowfall in Shandong *** cold airflow snowfall had distinct temporal and spatial distribution characteristics and corresponded with the vertical increasing movement zone.[Conclusion]The study provided reference for the preciseness of short term and incoming report of cold airflow snowfall in Shandong Peninsula.

关键词： Cold airflow snowfall Shandong Peninsula Relative humidity Ascending motion china

试析小流域土力类粘性泥石流的汇流过程——以滇东北大凹子沟为例

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山地学报 2001年第5期19卷 418-424页

作者：陈宁生韩文喜何杰鄢和琳中国科学院-水利部成都山地灾害与环境研究所!四川成都61004. 成都理工学院!四川成都610059

在分析土力类泥石流的产流特征和规律 ,尤其是土源与水源关系的基础上 ,将水文学上常用的等流时线法的基本原理应用于小流域土力类粘性泥石流的汇流计算。在具体的计算中 ,以滇东北蒋家沟的一支沟 -大凹子沟1994.- 0 6- 16的泥石流为例... 详细信息

在分析土力类泥石流的产流特征和规律 ,尤其是土源与水源关系的基础上 ,将水文学上常用的等流时线法的基本原理应用于小流域土力类粘性泥石流的汇流计算。在具体的计算中 ,以滇东北蒋家沟的一支沟 -大凹子沟1994.- 0 6- 16的泥石流为例进行泥石流汇流流量过程的试算。计算的结果应用观测的一些数值及现象和弯道超高的最大流量计算值检验 ,结果表明此计算大体可以定量地反映该流域流量的过程。通过此汇流计算还可以了解阵性泥石流与连续泥石流的产生关系和机理 ,也可以了解降雨时段与产流时段及汇流过程时段的差别。该研究的结果也存在主客观的局限性 ,这一局限性反映了进一步探讨流域的产流量规律、流域等流时区划分的规律、大流域汇流计算和泥石流的波坦化规律的必然性

关键词：土力类粘性泥石流汇流

Effects of the disaggregation of high-polymerized particles in guard cell vacuoles on osmoregulation of stomatal aperture (stomata opening)

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Chinese Science Bulletin 2003年第5期48卷 453-456页

作者： YE Qing, ZHU Guoli & LOU Chenghou Biology College, china Agricultural University, State Key laboratory of Plant Physiology and Biochemistry, Beijing 100094. china Correspondence should be addressed to Zhu Guoli (e-mail: glzhu@mail. ***) Biology College China Agricultural University State Key Laboratory of Plant Physiology and Biochemistry

observation under an electron microscope reveals that in closed and open stomata of V. faba, the aver-age volume of particles in guard cell vacuoles (GCV) reduces about 3 orders in magnitude, while the distribution density of the particles increases about 2.orders of magnitude. By using the method of the ratio of fluorescent emissions with laser scanning confocal microscopy, the monitoring to sto-mata opening shows that during 10 to 30 s before the first distinguishable aperture of stomata, there is a change of pH in GCV about -0.5 units. A quick stomatal opening immedi-ately follows the changes of pH in GCV to reach a steady aperture about 12.mm in 1002.0 s. This work proposes a model for the osmoregulation in GCV for stomatal opening. The proposed osmoregulation is related to the disaggregation of some polymerized particles inside GCV, which is probably induced by a -DpH in the vacuole. This model describes a process of osmoregulation that avoids the massive energy consuming transportation across cell membranes, which is a foundation of the current chemiosmotic hypothesis. This model is a supplement to the multiple controlling hypothesis for the stomatal {4., which widens research principle ideas for other quick {4.s in plants.

关键词：气孔运动气孔开放保卫细胞液泡渗透调节高聚合微粒解体

Current Activity Characteristics of the Fault Zone Along the Northern Margin of West Qinling Range Revealed by GPS Measurement

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Earthquake Research in china 2000年第2期14卷 6-15页

作者： Li Yanxing Hu Xinkang and Kang LaixunFirst crustal Deformation Monitoring Center, CSB, Tianjin 300180, china Lanzhou Institute of Seismology, CSB, Lanzhou 730000, china First crustal Deformation Monitoring Center CSBTianjin 300180China Lanzhou Institute of Seismology CSBLanzhou 730000China

The fault zone along the northern margin of West Qinling Range is a major active fault zone in the key seismic monitoring area in the southeastern part of Gansu Province. In order to study the current activity characteristics of this fault, GPS monitoring network has been arranged along both sides of the fault and 3 measurements have been made from 1996 to 1998. The result indicates that obvious differential movement exists along the north and south sides of the fault and the eastward movement on the south side is 3.8 mm/a larger than that on the north side. In the GPS network, the shortened side is generally in the trend of EW and the extended side is basically NW to SE. The principal compressional stress trend in this area is about EW and the sinistral motion is obvious in the eastern part of the fault (near Wushan). The measured results also indicate that the displacement rate has decreased by 50% and the compressional strain has increased by 100% as compared the data of 1997 -1998 with those of 1996-1997, which shows that the compressional stress field in this region is intensifying and the next earthquake might be developing at present.

关键词： GPS measurement Fault activity characteristics Strain field analysis

Experiment of Dividing the Active Blocks Based on Horizontal crustal movement Observed by GPS

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Earthquake Research in china 2000年第4期14卷 32-37页

作者： Li Yanxing, Hu Xinkang, Shuai Ping and Guo LiangqianFirst crustal Deformation Monitoring Center, CSB, Tianjin 300180, china First crustal Deformation Monitoring Center CSB Tianjin 300180 China

In this paper, the discrepancy between the movements of intraplate blocks and plates isdiscussed, and the method to divide the intraplate active blocks is presented by selecting Bursaformula as the kinematic model for the intraplate blocks. Based on the data of three GPScampaigns in North-china network in l995, 1996 and l999, respectively, the northern area inNorth{2. is divided into eight small blocks with the mathematical model and methodpresented in this paper. The divided blocks based on tbe horizontal and vertical crustalmovements in the paper are consistent or approximate with each other in the area as a *** divided blocks in the paper is also basically accordant with the neotectonic movement,which indicates that the current movement of active blocks in this area is the succession anddevelopment of neotectonic movement. Moreover, some new activity characteristics in the areahave been revealed by the tectonic units divided with the horizontal crustal movement.

关键词： Horizontal movement Mathematical model Block division

龙门山断裂带北段南坝地区上地壳S波分裂特征

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地球物理学报 2018年第5期61卷 2054-2065页

作者：郑拓丁志峰常利军宁杰远张辉王兴臣中国地震局地球物理研究所北京100081 北京大学地球与空间科学学院北京100871 中国地震局地震观测与地球物理成像重点实验室北京100081 山东省昌邑地震台山东潍坊261300

基于汶川科钻4.井孔(WFSD-4.附近的较小尺度的南坝微震台阵以及较大尺度的川西流动台站和区域台网的固定台站记录到的近震波形资料,通过横波窗内的S波分裂计算,分析了龙门山断裂带北段南坝地区的上地壳介质各向异性特征,并对区域应力... 详细信息

基于汶川科钻4.井孔(WFSD-4.附近的较小尺度的南坝微震台阵以及较大尺度的川西流动台站和区域台网的固定台站记录到的近震波形资料,通过横波窗内的S波分裂计算,分析了龙门山断裂带北段南坝地区的上地壳介质各向异性特征,并对区域应力场及构造特征展开讨论.S波分裂计算的结果显示研究区快波偏振方向主要表现为NE-NEE向,与北川断裂的走向一致,也与区域主压应力方向一致.小尺度密集分布的南坝微震台阵的计算结果进一步显示,靠近北川断裂的台站,其快波偏振方向与断裂走向一致,而距北川断裂较远的西北部台站的快波偏振方向与断裂走向不一致,反映了上地壳各向异性特征与地表的活动断裂结构密切相关.从南坝微震台阵的归一化时间延迟随时间的变化情况可以发现,在一个震中位于台阵布设范围内的地震事件发生前后,时间延迟有明显的变化,表明时间延迟随时间变化较为敏感,地震的能量影响了介质的性质.对比龙门山断裂带中段的科钻3号井孔周边地区的S波分裂计算结果,归一化时间延迟与本文结果一致,表明龙门山断裂带中段和北段的上地壳介质各向异性强度基本相同.

关键词：地壳各向异性 S波分裂龙门山断裂汶川科钻

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泥石流阵流及其活动规律

水土保持研究 2005年第6期12卷 242-244页

作者：倪化勇吕学军中国科学院成都山地灾害与环境研究所

阵流是黏性泥石流的主要运动形式.选择蒋家沟1987～1994.8年间运动过程完整,阵次明显并且观测资料齐全的50次典型泥石流作为研究对象,讨论泥石流阵流产生的原因,并统计分析泥石流阵流的活动规律和特征.通过对完整的泥石流暴发过程进行... 详细信息

阵流是黏性泥石流的主要运动形式.选择蒋家沟1987～1994.8年间运动过程完整,阵次明显并且观测资料齐全的50次典型泥石流作为研究对象,讨论泥石流阵流产生的原因,并统计分析泥石流阵流的活动规律和特征.通过对完整的泥石流暴发过程进行分析,发现泥石流阵流径流量与阵流频次之间存在幂律关系;通过对历年典型泥石流流量过程的分析,发现蒋家沟泥石流阵流活动具有多峰性与多时段性.对于进一步认识泥石流(尤其是黏性泥石流)的运动规律和运动特征具有重要参考价值.

关键词：泥石流阵流蒋家沟幂律规则流量过程线

Establishment of the GPS Monitoring Network in North china, the Relation of Horizontal crustal {2. to Stress Field and Seismicity

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Earthquake Research in china 1998年第4期12卷 30-39页

作者： Li Yanxing, Hu Xinkang, Zhao Chengkun, Wang Min, Guo Liangqian, and Xu JushengFirst crustal Deformation Monitoring Center, china Seismological Bureau, Tianjin 300180, china Institute of Seismology, china Seismological Bureau, Wuhan {4., china

In the paper, the establishment, measurement, data-processing program and monitoring accuracy of the GPS seismic monitoring network in North china, especially in the Capital-Circle area, have been presented briefly. The relation of horizontal crustal deformation to tectonic {2., stress-field variation and seismicity has been analyzed in detail. The results indicate that the accuracy of GPS measurement has reached the order of 10-9 and the annual rate of horizontal crustal deformation in North china is about 4.~5 mm. Horizontal crustal {2. is a direct indication of the regional stress field. Therefore, by monitoring the time-sequence variation of horizontal crustal motion, it would be possible to investigate the change in the stress field, to analyze the tendency of seismicity and to determine the seismogenic zones.

关键词： GPS network establishment Accuracy analysis Study of horizontal deformation field Tectonic movement.