松辽盆地北部油页岩资源潜力评价     

郑玉龙  陈春瑞  王佰长  王占国  刘胜英  吴相梅 《吉林大学学报(地球科学版)》2015,45(3):683-690

为评价松辽盆地北部油页岩资源潜力,开展了14口地质井的钻探、2 100多口老井的复查和多项油页岩的样品分析测试工作。根据油页岩分析测试资料,结合录井、测井、地震、沉积等研究成果,总结了油页岩主要特征,并用体积丰度法初步估算了埋深小于1 km的油页岩和页岩油潜在资源量。结果表明:松辽盆地北部油页岩主要发育在青山口组一段和嫩江组一、二段沉积时期的湖相沉积中,是盆地两次最大湖泛期的产物;嫩江组和青山口组油页岩平均岩石密度分别为2.20和2.18 t/m³,平均含油率分别为5.55%和5.39%;油页岩有机质类型为Ⅰ型和Ⅱ₁型,处于未成熟低成熟阶段,有机质丰度极高,是最好的生油岩。松辽盆地北部油页岩分布广泛、层位稳定、资源潜力巨大,初步估算埋深小于1 km的油页岩潜在资源量为6 008.40×10⁸ t,页岩油潜在资源量为297.50×10⁸ t。油页岩可以成为未来大庆油田常规油气的重要补充或接替资源。  相似文献   

Positivity-preserving high order well-balanced discontinuous Galerkin methods for the shallow water equations   总被引：1，自引：0，他引：1  

Yulong Xing  Xiangxiong Zhang  Chi-Wang Shu 《Advances in water resources》2010

Shallow water equations with a non-flat bottom topography have been widely used to model flows in rivers and coastal areas. An important difficulty arising in these simulations is the appearance of dry areas where no water is present, as standard numerical methods may fail in the presence of these areas. These equations also have still water steady state solutions in which the flux gradients are nonzero but exactly balanced by the source term. In this paper we propose a high order discontinuous Galerkin method which can maintain the still water steady state exactly, and at the same time can preserve the non-negativity of the water height without loss of mass conservation. A simple positivity-preserving limiter, valid under suitable CFL condition, will be introduced in one dimension and then extended to two dimensions with rectangular meshes. Numerical tests are performed to verify the positivity-preserving property, well-balanced property, high order accuracy, and good resolution for smooth and discontinuous solutions.  相似文献   

Mineralogy and Petrology of A New Lunar Meteorite M16005     

LIU Huanxin  MIAO Bingkui  HUANG Lilin  WANG Yulong 《《地质学报》英文版》2017,91(Z1):271-272

<正>1 Introduction M16005 is a lunar meteorite found recently.Optical and microprobe examinations reveal that it is a well consolidated,polymict regolith breccia.M16005 is composed of abundant mineral fragments and a few  相似文献   

定点连续海洋环境及气象资料的均一性研究          下载免费PDF全文

杨扬  杨锦坤  苗庆生  董明媚  刘玉龙 《海洋开发与管理》2017,34(6):85-91

目前国内外针对高空和地面气象资料的均一性研究基本成熟,海洋环境资料方面的研究应用亦应得到充分重视。开展多种均一性检验与订正方法联合使用的多模式检验系统研究,将使研究结果更加合理和科学,也可为沿海气候变化研究提供准确的第一手资料。文章在简述非均一性产生原理和均一性检验方法分类的基础上,较为详细地介绍几种常用的均一性检验方法的具体过程和优缺点;基于探空气象资料、地面气象资料和海洋环境资料等3个方面综述不同均一性检验方法的应用研究现状和进展。  相似文献   

Formation of well-mixed warm water column in central Bohai Sea during summer: Role of high-frequency atmospheric forcing     

Weiwei Ma  Xiuquan Wan  Zhankun Wang  Yulong Liu  Kai Wan 《中国海洋大学学报(英文版)》2017,16(6):945-952

The influence of high-frequency atmospheric forcing on the formation of a well-mixed summer warm water column in the central Bohai Sea is investigated comparing model simulations driven by daily surface forcing and those using monthly forcing data. In the absence of high-frequency atmospheric forcing, numerical simulations have repeatedly failed to reproduce this vertically uniform column of warm water measured over the past 35 years. However, high-frequency surface forcing is found to strongly influence the structure and distribution of the well-mixed warm water column, and simulations are in good agreement with observations. Results show that high frequency forcing enhances vertical mixing over the central bank, intensifies downward heat transport, and homogenizes the water column to form the Bohai central warm column. Evidence presented shows that high frequency forcing plays a dominant role in the formation of the well-mixed warm water column in summer, even without the effects of tidal and surface wave mixing. The present study thus provides a practical and rational way of further improving the performance of oceanic simulations in the Bohai Sea and can be used to adjust parameterization schemes of ocean models.  相似文献   

我国典型海洋型冰川区高海拔区输出水量变化对气候变暖的响应   总被引：2，自引：0，他引：2  

李宗省  何元庆  温煜华  庞洪喜  贾文雄  和献中  蒲焘 《地球科学》2010,35(1):43-50

通过丽江盆地气象水文观测资料研究发现: 冰雪消融加剧、融水增加, 漾弓江流域径流量明显上升; 高海拔冰雪区消融期提前, 春季径流增加明显; 高海拔冰雪区的径流输出对漾弓江流域水量平衡的贡献量逐年增加, 体现了全球气候变暖背景下高海拔冰雪区对整个流域水循环的重要性.对海螺沟流域实测气象水文资料的分析也表明, 气候变暖背景下, 该流域冰雪区水量输出也逐年上升.两流域高海拔区输出水量的剧烈增加, 明显响应了气候变暖, 表明了流域水循环的加速, 这必然将对区域的发展和资源开发产生重要影响.   相似文献   

袖阀管注浆工艺在柔性接头地下连续墙施工中的应用          下载免费PDF全文

李玉龙 《探矿工程》2020,47(5):89-92

北京朝阳区一管廊地下连续墙施工项目,因场区内工程、水文地质条件和施工场地局限性等因素,为节约经济成本和减少地连墙接头处渗水对后续结构防水施工的影响,采用了袖阀管注浆的防渗处理措施。介绍了袖阀管注浆工艺的施工方法,验证了该工艺处理地连墙柔性接头的防渗措施完全可行。  相似文献   

三峡水库水体漫衰减系数光学特性及其遥感反演     

徐纬凡  李云梅  王桥  吕恒  刘忠华  徐昕  檀静  郭宇龙  吴传庆 《湖泊科学》2011,23(1):95-103

根据2009年8月22-24 日实测的三峡水库水体的光谱数据以及水质参数,对三峡水库漫衰减系数的光学特性及影响因子进行分析研究,构建了490nm处漫衰减系数的Kd(490)反演模型,并利用环境一号卫星CCD数据对2009年7月21日的三峡水库Kd(490)进行反演.结果表明:由于水体中非色素颗粒物的含量较高,使得研究区...  相似文献   

Estimating genetic parameters with molecular relatedness and pedigree reconstruction for growth traits in early mixed breeding of juvenile turbot     

Song Sun  Weiji Wang  Yulong Hu  Sheng Luan  Ding Lyu  Jie Kong 《海洋学报(英文版)》2021,40(9):66-73

An introduced turbot population was used to establish families and to estimate genetic parameters of the offspring. However, there is a lack of pedigree information, and common environmental effects can be introduced when each full-sib family is raised in a single tank. Therefore, in the genetic evaluation, SSRs(simple sequence repeats) were used to reconstruct the pedigree and to calculate molecular relatedness between individuals, and the early mixed-family culture model was used to remove the impact of the common environmental effects. After100 d of early mixed culture, twenty SSRs were used to cluster 20 families and to calculate paired molecular relationships(n=880). Additive genetic matrices were constructed using molecular relatedness(MR) and pedigree reconstruction(PR) and were then applied to the same animal model to estimate genetic parameters. Based on PR, the heritabilities for body weight and body length were 0.214±0.124 and 0.117±0.141, and based on MR they were 0.101±0.031 and 0.102±0.034, respectively. Cross validation showed that the accuracies of the estimated breeding values based on MR(body weight and body length of 0.717±0.045 and 0.629±0.141, respectively) were higher than those of PR(body weight and body length of 0.692±0.052 and 0.615±0.060, respectively). The MR method ensure availability of all genotyped selection candidates, thereby improving the accuracy of the breeding value estimation.  相似文献   

新疆库米什盆地硝酸盐型盐湖中锶离子迁移富集规律研究     

李长忠  程怀德  张西营  宋建国  马学海  蒋天明  李俊  海擎宇 《岩石矿物学杂志》2021,40(1):89-98

新疆库米什盆地是典型的硝酸盐型盐湖分布区,盆内盐湖中Sr2+的含量明显比新疆其他盐湖要高,但对该地区盐湖中Sr2+的迁移富集规律尚未开展深入研究.本文以库米什盆地硝酸盐型盐湖为研究对象,探讨了研究区硝酸盐型盐湖中Sr2+的迁移富集规律.研究结果表明:①库米什盆地水体和沉积物中的Sr2+均具有自北西至南东向逐渐迁移富集的...  相似文献