Notes on the Lava Covered Gold Placer Deposits of Tangshau,Chihsia,Shantung

Introduction:In a clear summer day while standing on one of themountain tops of Linglungshan,~1 Chaoyuan,~2 Shantung,I saw severalmesas rising conspicuously at a distance of about thirty miles to thesoutheast.These topographical features remined me the possible occur-     

巽他大陆东南边缘的白垩纪俯冲,增生和碰撞作用

巽他大陆由不同年代的增生杂岩体和裂离于冈瓦纳大陆之增生微陆块所包围。巽他大陆东、南边缘的大陆增生作用起因于中、新生代沉积物的增生作用和陆块的碰撞作用。     

锋和地形

本文采用一个简单的模式研究山岳附近锋的传播和变形,这里将锋定义为两种均匀流体的分界面。由这个模式算出来的山岳附近锋的移动的基本特征已予证明。关于网格的分辩率,山地的表述以及高空流的方向和速度等方面,对山地附近锋的传播预报的敏感性作了试验。 一、引 言 冷锋的结构和它的传播速度均受到山脉的强烈影响,冷空气可以受到一个山岳的阻挡,其传播速度就会随之降低。然而,在有利的条件下,当冷锋沿着山脉移动时,它的速度明显加大。这种气流的数值模拟的出现是可能的。(例如,Gauntlett等MWR 112 1984)无论如何,然而预报这种锋的畸变仍然是困难的。     

太平洋西部中国沿岸海平面的变化

在有关世界大陆架地形和沉积的许多著作中,已对更新世冰期的低海平面作过研究。目前的残留海岸沉积和化石深度表明,冰川消溶前的海平面可能比现代低150米。海平面上升的大约深度和年代,是根据对残留的或准化石的海岸贝壳,和对从大陆架挖取或钻     

与辐射对流过程有关的热带环流:用全球谱模式所作的数值试验

一、引 言 在热带地区,太阳辐射和云辐射的互相作用过程对于数值天气预报来说是头等重要的。1983年 6月 WCRP的报告指出,目前的数值试验确认:时间平均热带环流的模拟(热带环流的时间平稳模拟)对对流和对流与辐射的相互作用是十分敏感的。这些物理过程的主要作用是通过加强的水分循环使对流加热加强,而水分循环的加强是由热带地区的水汽供应的增加和降水率的增加所造成的。 这篇文章描述了欧洲中期天气预报中心全球谱模式两个旬积分的结果。其目的是为了确定在热带地区的对流加热和降水率对辐射的作用。每一个模式的积分是从1979年 6月 11日格林威治时间12点的初始状态开始的,并且适用于若干天以后发生的印度夏季风迅速加强的时期。     

Strong ligands for thorium complexation in marine bacteria

The interaction between thorium and marine organisms (cultured heterotrophic bacteria) was experimentally examined by using chemical equilibrium techniques. Thorium (Th) quantitatively reacts with a binding site on bacteria (Alteromonas, Vibrio, Pseudomonas and Flavobacterium) in 0.1 M HCl solution. According to mass balance analysis of adsorption experiment data, Th forms a 1:1 complex with a binding site similar in reactivity among bacteria used in this study, whose conditional stability constants are in the range from 10(6.63) to 10(7.07) M-1 under the experimental conditions of a 0.1 M HCl solution. The mole ratio of the strong ligand to organic carbon in bacteria ranged from 2.3 to 4.3 mmol/mol C. The strong ligand/carbon ratios in bacteria were more than one order of magnitude greater than in phytoplankton, zooplankton or other organic ligands in surface waters. The results suggest that the strong organic ligand reacting with Th is one of the functional groups commonly existing in oceanic microorganisms. The conditional stability constants of the Th complexes with the binding site in marine microorganisms are in the same order of magnitude as that with the strong ligand found in particulate and dissolved organic matter. These findings strongly suggest that the strong ligand in particulate and dissolved organic matter, reacting with trace metals under the conditions of seawater, originates from marine organisms.     

PRELIMINARY REPORT ON SUSPENSION CULTURE OF CLON OF PORPHYRA YEZOENSIS CONCHOSPORANGIAL FILAMENTS IN THE PRODUCTION OF CONCHOSPORES FOR PURPLE LAVER AQUACULTURE

InSpringof1990,carposporesofboyeamsiswerecollected,gendnatedandgrewuptothefree-livingConchocelis,whichproducedconchosporangialfilaments.Allexperimentswereconductedincultureboxeswithlightandtemperaturecontrol.Theresultsofanumberofexperimentsareasfollows:1.Afterthedevelopmentofconcho-sporangialfilamellts,theycanbecultivatedalone,andnormallydevelopanddischargealargenumberofconchospores.2.Thesuspensionconchosporangialfilamentusedinpresentworkhavebeenvegetativelypropapatedmanytimesinseveralyears.…     

阿拉伯海马克兰增生柱BSR下伏层层游离气显示

马克兰陆缘地震反射资料表明那里存在一分布广泛的强反射的似海底反射层（BSR）。我们运用非线性全波形反演方法分析该海域多道地震数据来研究BSR详细的速度结构及其成因。结果表明，在500m深的海底下，纵波速从2.2km/s突然减到１.3km/s，低速带一般厚２００－３００m，可能含有丰富的游离气体，这与ＯＤＰ１６４航次在布莱克海台钻探的情况类似，由于断层的上升和增生楔中的沉积作用，与沉积柱有关的水合物稳定带裂解后向上运移，产生了大量的游离气体。