登陆热带气旋的大暴雨天气与一般暴雨对比分析及其雨强增幅原因的初探

本文以９０１５号热带气旋登陆后造成的省淮以南大暴雨天气为例，与８闪一般暴雨天气的热力动力条件进行对比，分析它们之间的异同点，并利用二维点尺度力学模式对地面中尺度锋区引起民环流进行模拟试验，结果表明，在热带气旋伸向东北部一条辐合线的偏北旗帜的中尺度锋区驱动扰动涡旋，在涡旋的上升部位可对大暴雨有增幅作用。     

中国北方超大型热水沉积硫化物矿床成矿模式

中国北方超大型热水沉积硫化物矿床成矿模式李英祁思敬（西安地质学院，西安７１００５４）关键词超大型矿床热水沉积作用大陆边缘盆地热旋回中国北方超大型热水沉积硫化物矿床（ＳＥＤＥＸ）集中产出于华北地台北缘西段与扬子地台北缘西段，即秦岭与狼山两区。可确定的矿...     

Reconstruction of Early-Middle Jurassic Large Ordos Basin and Tectonic Setting

ＲｅｃｏｎｓｔｒｕｃｔｉｏｎｏｆＥａｒｌｙ－ＭｉｄｄｌｅＪｕｒａｓｉｃＬａｒｇｅＯｒｄｏｓＢａｓｉｎａｎｄＴｅｃｔｏｎｉｃＳｅｔｉｎｇ＊ＣｈｅｎｇＳｈｏｕｔｉａｎＦｕＸｕｅｈｏｎｇＨｕａｎｇＹａｎｑｉｕＦａｃｕｌｔｙｏｆＥａｒｔｈＲｅｓｏｕｒｃｅｓ，...     

Runoff Scaling in Large Rivers of the World

Runoff and precipitation scaling with respect to drainage area is analyzed for large river basins of the world, those with mean annual runoff in excess of 10 k³/yr. The usefulness of the specific runoff (runoff per unit drainage area, m/yr) to categorize runoff scaling laws across the complete spectrum of climatic and hydrologic conditions is evaluated. It is found that (1) runoff scales with drainage are in those river basins with specific runoff in excess of 0.15 m/yr (r² = 0.88); (2) runoff scaling with drainage area shows remarkably high statistical correlation (r²= 0.97) in river basins with specific runoff equal to or larger than 1.0 m/yr; (3) runoff does not Inc.rease with Inc.reasing drainage area in river basins with specific runoff below 0.15 m/yr, where no discernible statistical association was found between runoff and drainage area; and (4) precipitation depth (m/yr) is inversely proportional to drainage area raised to a fractional exponent in river basins with specific runoff in excess of 0.15 m/yr.     

现代成矿预测若干理论述评

以成矿理论为支撑的现代成矿预测理论取得了长足的进展，对现代矿产勘查与评价实践工作具有重要的指导意义；据成矿预测理论近年来的进展，结合笔者等的研究工作体会，述评地质异常、矿床的成矿系列、矿床模型和超大型矿床勘查等成矿预测理论。     

High Pressure-Differential Thermal Analysis and Ultrasonic Wave Amplitude Analysis of Ice-Water Equilibrium at 1.5-5.0GPa

Water is the most active component in all geological systems.It has an important effect on the physical properties of minerals and melts.It also plays a key role in the evolution of the Earth.Accurate thermodynamics data on water are currently confined to pressures below 1.0GPa and temperatures below 900℃.Presented in this paper are new data available on the P-T properties of water at pressures up to 5.0GPa,develoged from differential thermal analysis and ultrasonic wave amplitude analysis.It has been found that there may exist another ternary point at 3.0GPa and that ultrasonic wave amplitude change of ice-water transition shows two inflection points above 2.0GPa, consistent with the two peaks of differential thermal curves above 2.0GPa .It may be a new phenomenon which needs further study.     

临沧超大型锗矿床有机质与锗矿化的地球化学特征

临沧锗矿床是一产于第三系含煤岩系中的超大型矿床。矿床的最初锗源与盆地西缘的二云母花岗岩有关。主矿体产于下煤组沉积旋回的早期地层中，每一沉积阶段早期形成的褐煤和碳质泥岩中富含锗，最高含量达１４７０×１０＾－６。褐煤和碳质泥岩在矿化过程中平均富集了１６４－１６９倍。根据锗含量，褐煤和碳质泥岩可分为锗含量小于１２×１０＾－６的低锗煤（泥岩）和大于９０×１０＾－６的高锗煤（泥岩）。高锗煤中有机质富含氧官能     

从天山乌鲁木齐河源1号冰川变化估计近百年来该地区夏季升温

通过冰川波动历史来揭示气候变化是一种重要的方法。然而，以往有关这一方面的研究大都是一些定性的。文章试图依据冰种变化来定量的研究气候变化，并且通过近百年来天山乌鲁木齐河源１号冰川的变化，揭示出本世纪以来该河源地区夏季气温上升约０．２３￣０．２５℃，同时，对于该冰川不同长度规模时的气候敏感性也进行了讨论。     

Quantitative Tectonic Markers of Large Coastal Earthquakes in Fujian, Guangdong, Taiwan and Hainan——with a Discussion of Qualitative Indicators

This paper expounds the quantitative tectonic indicators and some qualitative indicators of large earthquakes in the coast areas of Fujian, Guangdong, Taiwan and Hainan. The main quantitative indicators include uplift amplitude of the Moho, Quaternary and Late Holocene coasts. The paper also gives a brief account of the research method on quantitative indicators of surface uplifted zones. Taiwan is a famous neotectonic zone and an area of large earthquakes in the world. There is only one large-earthquake area in each of Fujian, Guangdong and Hainan Provinces. Along the coast large earthquake areas there are certainly many remains of crustal activity. Among these remains, coast activity, taking the sea level as the accurate marker horizon, can determine not only the amplitude of coastal elevation and subsidence in a certain period, but also the cycle and rate of positive or negative movements.     

地幔流体及其成矿作用

地幔流体作为一种重要成矿介质在某些矿床形成过程中起到过重要作用。根据目前地幔流体研究的某些成果，介绍了地幔流体可能与成矿的方式和成矿机制，并举例说明地幔流体与超大型，大型矿床之间的成因联系。