降水云中液水含量的空基遥感

在建立不同降水云垂直结构模式的基础上，利用矢量微波辐射传扬模式进行空基云雨遥感的数值试验。结果表明：星载微波辐射计6．9GHz通道对降水云的冰层很不敏感，而对降水云校总液水含量(LWC)非常敏感；辐射亮温(Tb)随LWC呈单调变化关系；进一步考查这个频率下b的两个极化分量差△Tb(＝Tbv—Tbh)和LWC的关系发现，不同云结构(对流云和层状云)对△Tb-LWC关系影响较小。研究分析表明，6．9GHz的v,h两个通道有可能用于遥感降水云的液水总量。     

黄土的物理力学指标与黄土易损性分析研究

作者多年来在黄土地区进行了考察和勘探并采集了各类黄土样品，在室内外进行了黄土的物理力学性质的试验研究，取得了大量的关于黄土特性的资料．根据这些研究结果，探讨了黄土的物理力学指标与黄土易损性的关系及其区域分布规律，从而研究它与黄土地区的地质灾害和震害的关系．     

A new method for testing pile by sin- gle-impact energy and P-S curve

Introduction Through many year's practices by vast numbers of scientific and technological workers andefforts from all aspects, the dynamic testing method of high-low strain has formally entered intothe technical code of foundation pile test of construction at last (The Industry Standards of thePeople's Republic of China, 2003). The striking mode of the dynamic testing method of high strainis stipulated as hammer in the code, the striking of rocket can also be used. The latter is widely…     

Carbon isotopic studies of individual lipids in organisms from the Nansha sea area, China

Sediments contain abundant lipid compounds in general, which are used as biomarker compounds to study organic matter sources and reconstruct the pa-laeoenvironments[1—7]. However, lipid compounds in sediments are generally a mixture of various genetic components so that it is difficult to correctly decouple their biological sources only by the results of bio-chemical researches. Carbon isotopic studies of indi-vidual sedimentary lipid compounds can discover their genetic information, which pr…     

山东莒南-日照地区榴辉岩与围岩的接触关系及其地质意义

对山东莒南日照地区榴辉岩与不同围岩的接触关系进行研究发现：包裹榴辉岩的斜长角闪岩有窄的细粒边；榴辉岩在变质地层及超镁铁岩中呈夹层状产出，与超镁铁岩相伴产出的榴辉岩有角闪石化边；变质含霓石花岗岩及闪长玢岩侵入榴辉岩。认为榴辉岩是“就地的”．其原岩类型较复杂。其形成时代可能为新元古代。     

磷对金刚石增强型硬质合金复合齿性能的影响

在金刚石增强型硬质合金复合齿基体中添加不同量红磷，可降低复合齿烧结温度，实现低温活化烧结。研究表明：添加0．3％(ωB)P的复合齿基体性能最好，采用化学镀Ni-P合金添加P和球磨添加0．1％P的方式，复合齿超硬部分的磨耗比和复合齿的抗冲击功优于单纯通过球磨添加0．3％P的超硬复合齿。为了实现金刚石增强型硬质合金复合齿的低温活化烧结，磷元素最优的添加方式是化学镀结合球磨的添加方式。     

Recent progress of glaciological studies in China

1IntroductionIn the early 1960s, glaciers in western China were classified into maritime- and continental-types by different glacial environment and physical characteristics (Shi and Xie, 1964). With extensive glaciological investigations in the western regions (Lanzhou Institute of Glaciology and Geocryology of CAS, 1988), Lai and Huang (1990) suggested a new classification of temperate, subpolar and quasipolar glaciers, corresponding to the maritime-, subcontinental- and extremely contin…     

合理设计岩屑规程保证正常钻进条件——金刚石钻进技术专题之一

论述了正常钻进的条件，提出了合理岩屑规程是保证正常钻进的关键和设计钻头的主要依据之一，讨论了岩屑规程与金刚石钻头唇面工作状态、孔底表面粗糙度和岩屑粒度的关系，提出了相应的建议。     

Recent progress of glaciological studies in China

Glacier inventory compilation during the past 20 years and modifications of that for the Eastern Pamir and Banggong Lake indicate that there are 46,342 modern glaciers with a total area and volume of 59415 km2 and 5601 km3 respectively in China. These glaciers can be classified into maritime and continental (including sub-continental and extremely continental) types. Researches show that glaciers in China have been retreating since the Little Ice Age and the mass wastage was accelerated during the past 30 to 40 years. Being an important part of glaciological studies in China, ice core climatic and environmental studies on Tibetan Plateau and in the Antarctica have provided abundant, high resolution information about past climatic and environmental evolution over the Tibetan Plateau and Antarctica. Except for different parameters recorded in ice cores relating to climate and environment changes on Tibetan Plateau, records from ice cores extracted from different glaciers show that the discrepancies in climatic and environmental changes on the north and south parts of the plateau may be the consequence of different influencing effects from terrestrial and solar sources. Glaciological and meteorological phenomena imply that Lambert Glacier valley is an important boundary of climate in the east Antarctica, which is thought to be connected with cyclonic activities and Circum-polar Waves over the Antarctica.     

Mesoscale Diagnosis of a Torrential Rainfall Caused by a Tropical Depression

On August 5, 2001, Shanghai was struck by a torrential rainfall due to the passage of a tropical depression (TD). The rainfall intensity has been the strongest in recent 50 years. In this paper, a set of mesoscale re-analyses data and the planetary boundary layer observation from a wind profiler are used to understand the possible mechanism of such a heavy rain. Results show that the outburst of a southerly jet in the lower atmosphere triggered the explosive development of cyclonically vertical vorticity in the region with steep potential temperature surfaces in front of the TD; while the cyclonic vorticity increased notably at higher levels due to the small atmospheric vertical stability of westerly currents in the vicinity of Shanghai. The simultaneous sharp development of cyclonic vorticity at different levels should be the main cause for the torrential rainfall.