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????IGS????120??E???1999??2009??IONEX?????????????????????TEC?????????????С?????鷽??????????????????????????????????????TEC?????????????2009???TEC?????????????顣????????????????????????????????????TEC??仯?????????????????????Ч?????????????????????????????TEC?????????????????4.441 0??2.915 1 TECU??????????????23.26%??10.78%????????????????????????0.712 2??0.785 9??     

曲线拟合法在山东流动重力资料处理中的应用

利用曲线拟合法对山东流动重力部分具有趋势性变化的异常测点进行了拟合改正,获取更可靠的重力变化信息,并对趋势性变化显著的测点进行了分析和讨论。     

Transformation of Carbon and Nitrogen by Earthworms in the Decomposition Processes of Broad-leaved Litters

Earthworms are the important constituents in the decayed food web and the main ecological conditioners in the process of decomposition and nutrient mineralization. The transformation of organic carbon (C) and total nitrogen (N) in the broad-leaved litters ingested by earthworms was researched by means of a laboratory experiment. Experimental samples were collected from broad-leaved Korea Pine mixed forest in Liangshui National Natural Reserve (47°10′50″N, 128°53′20″E) in the northeastern Xiao Hinggan Mountains of Northeast China. The contents of organic C and total N in earthworms, leaf litters and earthworm faeces were analyzed. Results show that the organic C content was in the fol- lowing order: leaf litters>faeces>earthworms, while total N content was contrary to that of the organic C. The organic C contents in the different leaf litters were in the following order: Tilia amurensis>Betula costata>Acer mono, whereas the total N contents in the different leaf litters were: Betula costata>Tilia amurensis>Acer mono. The contents of organic C and total N in the faeces from the different leaf litters were almost consistent with the contents of the leaf litters. After the leaf litters were ingested by earthworms, the organic C, which was transformed to increase earthworms' weights, ac- counted for 3.90%-13.31% of the total ingestion by earthworms, while that in the earthworm faeces accounted for 6.14%-13.70%. The transformed organic C through the other metabolism (e.g., respiration) of earthworms accounted for 75.04%-89.92%. The ingested organic C by earthworms was mostly used for metabolic activities. The N ingested by earthworms was less than organic C. It is estimated that 37.08% of total N was transformed to increase the earthworm's weight, 19.97% into earthworm faeces and 47.86% for the consumption of the earthworm's activities. The earthworms not only increased the content of organic C and total N in the soil, but also decreased the values of C/N in the soil and leaf litters. Earthworms play a major role in the leaf litters' decomposition and transformation.     

Deep-seated structure and gold content of Russia and China contiguous territories

On the contiguous territories of southeastern Russia and northeastern China, many gold-bearing areas are conjugate in space with the gradient zones of the gravity field. Large gold-ore districts, defining in many respects the metallogenic signature of the region, are located on the joints of differently oriented gradient zones. In the best-studied districts, the Precambrian protrusions, staged distribution of magmatic chambers ( by vertical) above the Mohorovicic discontinuity and restriction to the peripheral parts of intrusive massifs have been recognized. Different-type gold deposits in the studied ore-placer districts and nodes are often located on the areas of joint of the granitoid massifs and subvolcanic bodieswith depressions. Availability of areals of metasomatic alterations of rocks, placers, and ore occurrences of precious metals on such but poorly studied areas can serve as the basis for the revision and detailed forecasting-prospecting works to develop the mineral-raw material base of the region for precious metals.     

推覆构造滑脱层有限变形力学分析

本文根据推覆构造滑脱层的变形特点,运用以S—R分解定理为基础的有限变形力学理论,研究了断坪与断坡滑脱层的变形场特征。用全量及增量方法逆解求出了变形滑脱层所受的边界外力;利用变形场与应力场的分析结果,给出了推覆构造在拆离时推覆席体的推移距离及作用推力的简捷计算公式。     

章丘市枣园桃花山地热田地质特征分析

章丘市枣园桃花山地区蕴藏着丰富的地热资源。根据煤矿勘探和地热普查成果,对桃花山地热田的地质背景、热储特征、地球物理化学特征等进行综合分析,认为桃花山地热田属于典型的带状兼层状、对流兼传导型地热田,热储层为奥陶纪马家沟组灰岩,该区地温梯度主要受断裂控制,断裂导热是形成该地温场的一个重要因素,地热水水源主要为渗入的溶滤水。     

昆仑山8.1级地震前中国大陆的构造应变背景

利用“网络工程”1998～2001年累积的1181个测站的GPS重复观测资料，采用双三次样条函数模型建立中国大陆水平运动模型速度场，用大地坐标在椭球面上计算各类应变场，详细分析了2001年昆仑山8．1级地震前中国大陆水平构造应变场空间分布特征。各类构造应变场的最高值都出现在喜马拉雅构造带与昆仑山地块内(地震断裂带南侧)，鲜水河—安宁河断裂带次之。分析表明，昆仑山8．1级地震正好发生在张性面膨胀应变率的高值区，第一、第二和最大剪应变率高值区边缘的突变区和最大、最小主应变率的高值区。     

含有集约束向量极值问题的最优性条件

在序线性拓扑空间里研究了含有集约束向量极值问题的最优性条件,并建立了充分性和必要性条件.     

场认知方式、性别和惯用空间语对地理空间定向能力影响的实验研究

目前人们对空间定向能力影响因素的研究多关注性别与空间定向能力的关系,较少涉及场认知方式、惯用空间语等因素对空间定向能力的影响。本文以空间认知眼动实验的方式展开研究,通过国内版镶嵌图形测验（EFT）、问卷调查等途径获取被试的场认知方式、性别和惯用空间语等基本信息,使其在控制单一环境变量的虚拟三维空间中完成不同难度的定向任务。进而构建正确率和效率2个指标来衡量空间定向能力,通过统计分析确定空间定向能力的影响因素。研究结果表明：（1）不同场认知方式和不同惯用空间语人群的定向正确率和效率差异统计结果均不显著,场认知方式和惯用空间语对空间定向能力无显著影响;（2）不同性别人群之间定向效率无显著差异而正确率存在显著差异,性别对空间定向能力具有显著影响,男性的空间定向能力较女性更强。     

大别山及其周边现今垂直形变研究

基于1980年、2005年和2015年3期区域精密水准网观测资料,利用线性动态平差模型计算获取大别山地区水准网长期垂直运动速度场图像。研究发现,淮河平原地表下沉较为严重,大别山呈现弱隆升趋势运动,长江谷地边缘地区较大别山区呈现明显的隆升运动。跨郯庐断裂带水准剖面结果显示,垂直运动与地形呈负相关和弱相关。