贵州及邻区奥陶纪红花园期岩相古地理特征   总被引：1，自引：0，他引：1       下载免费PDF全文

梅冥相  曾羽 《沉积与特提斯地质》1989,9(5):15-25

笔者于1986至1988年期间,对贵州及邻区早奥陶世岩相古地理进行了大量的野外及室内研究。在前人工作的基础上,综合自己的观察研究,对贵州及邻区红花园期岩相古地理特征获得较系统的认识。一、地层概况贵州及邻区早奥陶世红花园期的地层主要为: 在三都一带的同高组下部,湖南吉首为桃花石组或马刀堉组,向西至四川南部及贵州大部称红花园组。靠近古陆边缘的滇东及川西南为红石崖组下部。  相似文献   

季风和大气环流季节突变的数值模拟     

曾庆存  梁信忠  张明华 《大气科学》1988,12(S1):22-42

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大地电磁测深法在福建漳州地热区的应用   总被引：1，自引：0，他引：1  

吴广耀  曾陆海 《地球科学》1988,(3)

为了研究漳州地区深部构造和热源条件,在天宝、漳州、龙海一线进行了大地电磁测深测量工作。通过对大地电磁测深结果的分析和解释,表明在漳州地区龙海—浮宫一带上地幔高导基底明显上隆,在壳内10—13km深处具有明显的高导层,地表覆盖层电阻率很低。根据这些情况并结合地质资料推断,这一带地下存在着温度较高的热源及地下水补给条件,在地下水深循环和热对流良好的断裂交汇区,有可能形成水温较高的地热田。  相似文献   

数值积分水滴碰并、破碎方程的一种精确的快速计算方法     

曾西平  章澄昌 《大气科学》1989,13(1):76-86

本文改进了数值积分随机碰并方程的Bleck方法,当变量更换函数采用g′(m)=Am~N+B/m~M的形式时,适当选取M,N值可使数值积分水滴碰并方程的精确度大为提高,达到了Berry方法的水平,甚至在某些方面超过了它,在计算速度上也令人满意。文中对各种计算方法进行了仔细的比较和检验。  相似文献   

广东莲花山钨矿床中分散钨赋存情况及有用元素综合利用的研究          下载免费PDF全文

曾玖吾  王曼祉  曲维政  陈森煌 《地质找矿论丛》1986,(2):36-45

在承担《南岭地区典型钨矿床矿石物质成分及综合利用前景研究》专题中,应广东莲花山钨矿的要求,重点对该矿床三号矿体进行了野外观察,采样及大量室内工作,在分散钨,有价元素的赋存状态,空间分布及其综合利用的研究方面比前人有所前进.  相似文献   

The advances in the studies on general circulation and large-scale dynamics,and their prospects for the year of 2000   总被引：1，自引：0，他引：1  

Huang Ronghui  Zeng Qingcun  Yang Dasheng 《大气科学进展》1986,3(3):263-276

In this paper, we review the progress made in the studies on general circulation and large-scale dynamics. We divide the advances in the studies on the atmospheric circulation and large-scale dynamics into 4 stages, i.e., the studies on atmospheric wave dynamics; the studies on the observational facts of general circulation; the numerical studies on general circulation; and the studies on planetary wave dynamics, wave-mean flow interaction and nonlinear dynamics. Moreover, the prospects of the studies on the atmospheric circulation and large-scale dynamics for the future are also made in this paper.  相似文献   

EVOLUTION OF LARGE SCALE DISTURBANCES AND THEIR INTERACTION WITH MEAN FLOW IN A ROTATING BAROTROPIC ATMOSPHERE —PART I     

Zeng Qingcun  Lu Peisheng  Li Rongfeng  Yuan Chongguang 《大气科学进展》1986,3(1):39-58

The problems on evolution of large-scale disturbances and their interaction with mean flow recently attract much effort of meteorologists due to their practical importance in weather and climate predictions. In this paper, some theoretical results obtained in current investigations of these problems will be reviewed. A barotropic atmosphere is taken in this paper, and the baroclinic atmosphere is left in our second paper.The following aspects are reviewed: First, the general properties of two-dimensional barotropic motion both in the nonlinear and linearized equations and both in the quasi-geostrophic and non-geostrophic models. Second, the evolution and the structure of Rossby wave packet superimposed on a zonal or non-zonal basic flow.In this part, only the above two problems are reviewed. The rernanent problems, i.e., the normal modes and continuous spectra of both quasi-geostrophic and non-geostrophic models, weakly nonlinear theory and the fully nonlinear theory will be discussed in part II (another paper).  相似文献   

大气中的二氧化碳含量   总被引：3，自引：0，他引：3  

王明星  曾庆存 《大气科学》1986,10(2):212-219

本文综述自然界二氧化碳的循环;大气中二氧化碳的源和汇,大气中二氧化碳的空间分布和时间变化;讨论人类活动对大气中二氧化碳的影响,特别是大气中二氧化碳浓度的变化趋势及其预测问题.  相似文献   

稳定层结140米以下风廓线的研究     

曾旭斌  赵鸣  苗曼倩 《大气科学》1987,11(2):153-159

在稳定层结情况下,考虑到140米以下大气中局地摩擦速度u_*随高度的减小及混合长l随高度的非线性变化,将近地层由理论获得的通量—梯度关系推广到140米以下大气,得到了改进的风廓线公式.利用北京325米气象塔的资料进行检验,误差较小.若将近地层的廓线公式直接应用到140米以下大气,则误差明显比改进的风廓线公式的误差大.  相似文献   

Reef-controlled Mineral Deposits in Southern China     

Zeng Yunfu  Tian Hongjun 《《地质学报》英文版》1989,63(3):241-252

Reef-controlled mineral deposits in southern China are divided into three types in this paper based on the relative importance of organic reefs in the ore-forming processes; they are: the direct type, indirect type, and passive type. The case histories of several typical deposits are discussed. In studying reef-controlled deposits, more attention should be paid to the function of synsedimentary faults in reef construction and mineralization and the importance of oil-gas palaeoreservoirs in reef rocks for the formation of sulfide deposits, in addition to analysing the favourable sedimentary facies of mineralization.  相似文献