抚仙湖有机碳的分布状况与动态变化

通过对位于中国西部的运动嵩原上的抚仙湖、星云湖及其上游的有机碳的分布状况和动态变化的调查，评估出这些湖泊的有机物对水质的影响。上游漂移来的有机碳对湖泊有机物动态变化的贡献比本湖泊生成的有机物的贡献小得多。抚仙湖主要有机物的增长是由于过去的20年间湖水水质退化、富营养化造成的。     

Determination of the Drag Coefficient over the Tibetan Plateau

In this paper,a preliminary study is given on the drag (i.e.bulk transfer for momentum) coefficient,on the basis of data from four sets of AWS in Tibet during the first observational year from July 1993 to July 1994 according to China Japan Asian Monsoon Cooperative Research Program.The results show that the drag coefficient over the Tibetan Plateau is 3.3 to 4.4×103.In addition,monthly and diurnal variations of drag coefficient and the relationship among the drag coefficients and the bulk Richardson number,surface roughness length and wind speed at 10 m height are discussed in detail.     

Seasonal transition of summer rainy season over indochina and adjacent monsoon region

The mean onset and withdrawal of summer rainy season over the Indochina Peninsula were investigated using 5-day averaged rainfall data (1975-87). The mean seasonal transition process during onset and retreat phases in Indochina, India and the South China Sea is also examined using 5-day mean OLR (1975-87) and 850 hPa wind (1980-88) date. It was found that the onset of summer rainy season begins earlier in the inland region of Indochina (Thailand) in late April to early May than in the coastal region along the Bay of Bengal. This early onset of rainy sea-son is due to pre-monsoon rain under the mid-latitude westerly wind regime. The full summer monsoon circulation begins to establish in mid-May, causing active convective activity both over the west coast of Indochina and the cen-tral South China Sea. In case of withdrawal, the earliest retreat of summer rainy season is found in the central northern part of Indochina in late September. The wind field, on the other hand, already changes to easterlies in the northern South China Sea in early September. This easterly wind system covers the eastern part of Indochina where post-monsoon rain is still active. In late October, the wind field turns to winter time situation, but post monsoon rain still continues in the southern part of the Indochina Peninsula until late November     

A numerical model on sea surface wind of typhoon and its hindcasting calibration

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全球气象资料客观分析系统的分布式并行化

对已有的率行算法进行并行化，是一项很困难的工作。通过对全球气象资料客观分析系统率行算法的研究，提出了在MPP高性能计算机上的一种静态分配数据的分布式并行算法。该算法通过间隔选取分析盒子和模式格点纬圈行，将数据分配给不同的处理机实现分布式并行。该并行算法负载平衡好，并行效率高，而且并行化代价较低，具有良好的可扩展性。最后，给出了并行算法的性能测试结果。     

The Grouping of the Strike-Slip Offset Data and Its Relation With the Seismicity Along Middle Segment of the Xiaojiang Active Fault

The data of the strike-slip offset along the Xiaojiang active fault can be obviously grouped.The groups of small orders of magnitude data within 100 m show clear linear characteristics of increments between 8 m and 12 m,which indicates that the segments of the Xiaojiang active fault is of characteristic seismicity and the distribution of the values of each group indicates that there are smaller earthquakes and creep between two large earthquakes along each segment of the Xiaojiang active fault.The interval between two characteristic large earthquakes can be calculated with the increments for two groups of slip data and the slip rate of the fault.Furthermore,the frequency of smaller earthquakes can also be estimated by comparing the distributions of the displacements of the large earthquakes with the distributions of the values of each group of data.The groups of large slip displacements show that there is close relationship between the records of the displacements of the fault and the changes of the cli     

INVERSION OF MOISTURE PROFILES BY A NONLINEAR ITERATIVE PHYSICAL RETRIEVAL*

The Advanced TIROS-N Operational Vertical Sounder(ATOVS) measurements are used to generate the atmospheric parameters,such as temperature and moisture profiles,under both clear and cloudy situations.This paper describes briefly the nonlinear iterative physical retrieval method.By using this retrieval scheme,an experiment has been carried out to retrieve the moisture profiles from ATOVS measurements on the NOAA-16 satellite for July of 2002.ATOVS profile retrieval results are evaluated by root mean square(RMS) differences with respect to RAdiosonde OBservation(RAOB) profiles.The accuracy of the retrieval is about 15%-23% for the relative humidity profile in this study.     

A High Precision Forecasting Model and Its Constructing Method for Vein Type Gold Deposits

ＩＮＴＲＯＤＵＣＴＩＯＮＡｍｏｄｅｌｍｅｔｈｏｄ ,ｃｒｅａｔｅｄｉｎｔｈｅｓｃｉｅｎｔｉｆｉｃｒｅｓｅａｒｃｈ ,ｉｓｕｓｅｄｔｏｒｅｐｒｅｓｅｎｔａｎｏｂｊｅｃｔ.Ｓｕｃｈａｍｏｄｅｌｉｓｍｏｄｉｆｉｅｄａｎｄｉｍｐｒｏｖｅｄｉｎｏｒ ｄｅｒｔｏａｐｐｒｏａｃｈａｒｅａｌｒｅｓｅａｒｃｈｏｂｊｅｃｔ.Ｔｈｉｓｋｉｎｄｏｆｍｏｄｅｌ,ｗｉｄｅｌｙａｎｄｅｆｆｅｃｔｉｖｅｌｙｕｓｅｄｉｎｔｈｅｐｒｅｓｅｎｔｒｅｓｅａｒｃｈｉｎｔｏａｃｏｍｐｌｅｘｓｙｓｔｅｍ ,ｍａｙｈｅｌｐｕｓｔｏｄｅｓｃｒｉｂｅａｎｄ…     

Automatic Classification and Compression of GMS Cloud Imagery in Heavy Rainfall Monitoring Application

The Bayes Decision method (BD) has been implemented on GMS Stretched VISSR (S.VISSR) images. Several objects are identified. These are earth’s surface, stratiform, convective and cirrus clouds. Overlaid 6-hour surface rainfall observations show that the rain area on the ground matches with precipitable cloud area identified by BD method. Finally the data of classified image are compressed to about one-eighth amount by use of Line-Run-Cod-ing technique. It is helpful for data archive and remote transmission.     

朝鲜半岛及黄海板内地震的体波分析

本文研究了朝鲜半岛及黄海板内４次中强度浅震，求出它们的震源机制、震源深度、震源时间函数及地震矩。结是要发现，用短周期合成地震图与观测结果对比求得的震源深度是很浅的，在６－９ｋｍ之间。为了测定震源机制、震源时间函数及地震矩，我们根据ＧＤＳＮ资料反演了远震长周期Ｐ与ＳＨ波。反演虽仅依据少数远震体波作出，但矩张量的辐射图形与在近震及远震距离上观测到的大多数Ｐ波初动方向一致。相对振幅及波形在观测结果与合成