河北秦皇岛斑鬣狗巢穴(灵仙洞)及斑鬣狗的集群死亡与埋藏

河北省秦皇岛灵仙洞发现了一批最后斑鬣狗化石,标本达上千件,至少代表了30个不同个体,包括3具骨架(其中骨架Ⅰ是世界上迄今所发现最完整的1具),还发现了一些其他哺乳动物化石,共计26属27种.根据动物群组成、地质地貌以及堆积物的综合分析判断,它的时代可能属于中更新世晚期至晚更新世早期.动物群的生态组合反映当时处于一个温热偏干、半封闭或开阔的山间草原而周边山上有树林的生态环境.标本(尤其是完整骨架)的保存为典型的原地埋藏,死后未受到包括斑鬣狗自身在内的动物干扰和破坏.斑鬣狗在动物群中占绝对优势以及幼年个体和粪化石的发现,表明灵仙洞是一处斑鬣狗族群的巢穴.与其他斑鬣狗巢穴不同的是:斑鬣狗的猎物稀少,鲜见斑鬣狗的活动痕迹,尤其是幼年斑鬣狗啃咬形成的特定产物“nibbling sticks”,这说明灵仙洞既非用于猎物遗骸的储藏,也非用于幼崽的抚养,而是一处共用巢穴,同时也表明灵仙洞的骨骼聚集与埋藏有着特定的成因和机理.     

塔里木盆地奥陶系萤石脉—油气叠合成藏作用——高分辨率成像测井资料提供的证据

根据高分辨率电阻率成像测井解释,结 合岩心观察及薄片资料,探讨了塔里木盆 地塔中X井下奥陶统灰岩段内罕见的萤石脉—油气叠合成藏现象。萤石脉侵位于二叠纪塔里 木盆地中西部区域性火山活动时期,由上侵至地层浅部的低温岩浆热液沿断层、裂隙发育带 充填而成。萤石脉及其附近灰岩围岩中溶洞的形成为后期油气聚集提供了良好的储集条件, 它与充足的油气来源及上覆巨厚中、上奥陶统泥质岩有利的封盖条件配合,促成了油气在萤 石脉基础上的叠合成藏。该油气藏的发现为塔里木盆地油气勘探开辟了一个新领域,并丰富 了传统的油气成藏理论。     

黑龙江平顶山金矿石英天然热发光特征

对平顶山金矿中52件石英样品的天然热发光曲线特征研究表明,含金或富含金石英的热发光曲线以双峰或多峰为其主要特征,不含金的石英以单峰为其特征,石英热发光曲线特征可作为指示金矿化的一个重要标志.     

Raman spectroscopic study of K-lingunite at various pressures and temperatures

K-lingunite is a high-pressure modification of K-feldspar that possesses the tetragonal hollandite structure. Variations of the Raman spectra of K-lingunite were studied up to ~31.5 GPa at room temperature, and in the range 79–823 K at atmospheric pressure. The Raman frequencies of all bands were observed to increase with increasing pressure, and decrease with increasing temperature for K-lingunite. This behavior is in line with those observed for most of other materials. New sharp Raman bands appear at pressures greater than 13–15 GPa, suggesting a phase transition in K-lingunite with increasing pressure. The transition is reversible when pressure was released. The appearance of these new Raman bands may correspond to the phase transition revealed earlier at around 20 GPa by X-ray diffraction studies. Instead of transforming back to its stable minerals, such as orthoclase, microcline or sanidine, K-lingunite became amorphous in the temperature range 803–823 K at atmospheric pressure.     

辽吉东部层状混合岩的成因

辽吉东部的层状混合岩与上、下围岩始终保持整合接触,反映它的体系基本上是封闭的,没有外来组份的加入。其组构、岩石化学、微量元素和稀土资料等表明层状混合岩不足岩浆型的,而是重熔岩浆型的,其原岩是沉积变质岩。     

The Influence of Chlorine on the Determination of Combined Water: An Investigation of a Correction Procedure

Differential thermal analysis, pH determination and ion chromatography were used to investigate the interference of chlorine in the determination of combined water (H₂O⁺) by the Penfield tube gravimetric method. The magnitude of the chlorine interference was quantified and a correction method was proposed to obtain accurate results for H₂O⁺. The method was applied to the determination of H₂O⁺ in deep sea sediments containing chlorine and certified reference materials of oceanic polymetallic nodules.     

桥梁气象专题研究与服务

根据实际开展的桥梁气象专题研究，分析桥梁气象研究与服务如何面对国内大型桥梁建设发展趋势所带来的机遇和挑战，提出开展桥梁气象研究与服务的必要性，并从桥位气候背景、桥位气象参数取值、桥梁气象研究方法以及桥梁施工及营运期气象服务与保障等方面介绍桥梁气象专题研究及服务应开展的主要内容，同时，给出一个已投入实际使用的桥梁施工期气象环境监测与预警系统的建设思路。     

多普勒雷达基本观测量直接同化对模式物理量场的影响

在GRAPES一3DVar雷达同化模块的基础上,建立了多普勒径向速度和基本反射率因子的直接同化观测算子,实现了雷达反射率因子和径向速度的直接同化,并对2007年7月3日的江淮梅雨进行了模拟试验。结果表明,多普勒径向速度的直接同化的主要影响表现在风场上,能够改善几乎整个三维风场分析,在雷达影响半径范围内,风场明显得到加强,影响当时天气的系统及其高低层配置被合理模拟,但对湿度场影响甚微。雨水混合比的直接同化的主要影响表现在湿度场上,改进了模式对湿度场的模拟,对降水的影响十分显著,有利于准确模拟降水的发展和维持,减小了Spin—up现象;其亦可使整个风场微弱增强,但影响甚微。     

The characteristics of ultraviolet radiation in arid and semi-arid regions of China

Measurements of the broadband global solar radiation (R _S) and total ultraviolet radiation (the sum of UV-A and UV-B) were conducted from 2005 to 2010 at 9 sites in arid and semi-arid regions of China. These data were used to determine the temporal variability of UV and UV/R _S and their dependence on the water vapor content and clearness index. The dependence of UV/R _S on aerosol optical depth (AOD) and water vapor content was also investigated. In addition, a simple and efficient empirically model suited for all-weather conditions was developed to estimate UV from R _s. The annual average daily UV level in arid and semi-arid areas is 0.61 and 0.59 MJ m^?2 d^?1, respectively. The highest value (0.66?±?0.25 MJ m^?2 d^?1) was recorded at an arid area at Linze. The lowest value (0.53?±?0.22 MJ m^?2 d^?1) was recorded at a semi-arid area at Ansai. The highest daily value of UV radiation was measured in May, whereas the lowest value was measured in December. The monthly variation of the UV/R _s ratio ranged from 0.41 in Aksu to 0.35 in Qira. The monthly mean value of UV/R _s gradually increased from November and then decreased in August. A small decreasing trend of UV/R _s was observed in the arid and semi-arid regions due to recently increasing amounts of fine aerosol. A simple and efficient empirically model suit for all-weather condition was developed to estimate UV from R _s. The slope a and intercept b of the regression line between the estimated and measured values were close to 1 and zero, respectively. The relative error between the estimated and measured values was less than 11.5%. Application of the model to data collected from different locations in this region also resulted in reasonable estimates of UV.     

水平离散网格与大气运动

从线性浅水方程组出发,在Arakawa A-E网格和z网格上,从频率和群速方面讨论了这六种网格对大气中的两种重要的波动：惯性重力波和Rossby波的描述能力。结果表明：C、z、E网格比其它网格产生的歪曲都要小。