江苏省1∶25万、1∶100万基础数据修测与建库

1∶25万、1∶100万基础数据是江苏省地理空间信息基础框架的重要组成部分,本文根据江苏省地理空间信息基础框架的要求,结合全省现有的基础地理数据库建设的现状,叙述了对全省范围内的17幅1∶25万DLG、DOM,4幅1∶100万DLG数据如何进行修测、更新和入库,并建立相应的元数据库的过程和方法。     

Key Scientific Problems and Challenges of Studying Carbon Cycle Mechanism in Pacific Sector of the Arctic

Challenged by the enormous pressure to reduce the global carbon emission, it is expected that the Arctic Ocean could absorb additional atmospheric CO₂ with the retreating of sea-ice. The Chukchi Sea and adjacent waters, characterized by the highest carbon fixation in the global ocean and large carbon flux into the deep-ocean for sequestration, make substantial contributions to carbon cycling in the entire Arctic Ocean. Understanding the response mechanism of carbon cycling in this region to the rapidly changing environment is the foundation for the prediction of carbon sink in the Arctic Ocean. However, the response of carbon absorption and storage to climate change is still controversial, and the main controlling factors of the carbon cycle process remain unclear.Thus, to establish high-resolution coupled ocean-ice-carbon models can explore the influence of sea ice retreat on atmospheric CO₂ and the vertical sinking carbon fluxes in Chukchi Sea, estimate the effectiveness of growing inflow and slope upwelling on carbon sink/source patterns, discuss the response of deep-ocean carbon sequestration to the changing environment, and evaluate the effectiveness of continental shelf pump in the Chukchi Sea as well as its role in the global carbon sink. Based on the challenge for the research of the Chukchi Sea carbon cycle research with rapidly changing climate, the basic ideas of establishing Arctic Ocean carbon cycling model as well as its key scientific issues to be resolved were proposed.     

首都圈地区爆破、矿塌和天然地震的识别研究

选取首都圈地区2008年8月——2009年9月ML在2.0——2.2范围内的爆破、矿塌和天然地震数据资料,从时间域和频率域进行分析对比,总结出识别爆破、矿塌和天然地震的依据．在时域方面,爆破的初动方向向上,矿塌向下,天然地震的初动方向依赖于台站的分布情况;爆破和矿塌的面波比较发育;天然地震的S波与P波最大振幅比(AS/AP)大于爆破和矿塌,同时,爆破和矿塌的能量衰减比天然地震快．在频域方面,高频成分的能量衰减快于低频;天然地震的拐角频率较高,爆破次之,矿塌的最小;在震中距200 km范围内,爆破的顶峰频率主要分布在5——7 Hz,矿塌分布在2——4 Hz,天然地震的顶峰频率较大,在10——18 Hz范围内.另外,天然地震的频率域较宽,其次为爆破、矿塌．      

Correlation between grain shape and critical state characteristics of uniformly graded sands: A 3D DEM study

Acta Geotechnica - The multi-scale characteristics of particle morphology, including the overall form, local roundness and surface roughness, affect the critical state behavior of sands and should...     

Interaction between subducted continental crust and the mantle

The syncollisional mafic-ultramafic intrusions in the North Dabie terrane are characterized by enriched LREE, Rb, Ba, and depletion of high field strength elements, such as Nb, Zr, Ti. The high Ti/& and Ti/Y ratios of their parent magma suggest that crust contamination of magma is not important to the above trace elements characters. They mainly reflect the features of their mantle source which has been modified by metasomatism in subduction environment.     

运用定量化结构分析方法揭示蚀变花岗斑岩的形成过程——以新疆莫阿特茂金岩体为例

地球化学分析方法已广泛运用于火成岩成因的研究中, 但对于一些蚀变较严重的岩石, 有时仅通过地球化学分析难以还原岩浆固结的过程.火成岩定量化结构分析方法是通过对岩石中矿物的定量分析(诸如晶体粒度分布分析, 晶体空间分布分析, 以及晶体定向程度分析等), 从而反演岩浆固结过程中发生的动力学过程.这种方法很好地避免了蚀变作用对还原岩体形成过程所产生的诸多影响.本文运用火成岩定量化结构分析方法, 对新疆莫阿特茂金花岗斑岩体钻孔中10个样品的钾长石斑晶和石英斑晶分别进行分析.尽管这些样品普遍发生了碳酸盐化蚀变作用, 定性观察中结构特征也比较均一, 但是钾长石和石英斑晶的定量化结构数据及其在钻孔深度(约170 m)范围内的变化趋势显示, 茂金花岗斑岩体可能至少由4次脉冲岩浆叠加形成, 每股岩浆中心的CSD曲线小晶体缺乏, 发生了粗化现象.由于脉冲式岩浆多次注入, 导致的温度振荡加剧了矿物粗化.脉冲岩浆中心处斑晶体积含量的增加, 可能与岩浆流动过程中对大晶体的影响有关, 80 m深度以下脉冲岩浆接触带的斑晶体积含量明显增加, 是由于机械压缩导致的.     

Integration of multi-parametric fuzzy analytic hierarchy process and GIS along the UNESCO World Heritage: a flood hazard index,Mombasa County,Kenya

Natural Hazards - Flood is a natural hazard affecting human life and ecosystem globally causing catastrophic disasters. Most flood-induced socioeconomic losses are exacerbated by unabated urban...     

吉林省松江盆地下白垩统烃源岩地球化学特征及油气勘探前景

吉林省松江盆地油气勘探程度很低。通过松江盆地下白垩统长财组和大砬子组的系统取样与多项地球化学指标测试,详细评价了该区烃源岩的有机质丰度、类型及成熟度等各项指标。初步得出:松江盆地面积虽小,但巨厚的下白垩统沉积盖层中,大砬子组二段烃源岩发育,有机质丰度高,类型较好,且主要处于成熟阶段,具有较好的生烃能力;区内长财组和大砬子组一段发育储集层和盖层,形成了以上生下储为主的有利生储盖组合条件,具有一定的油气勘探前景,是松辽盆地外围油气勘探的较有利目标区。     

芙蓉李宁冈产地与原产地气象条件对比分析

对比分析原产地与引种地的气象条件,探索影响芙蓉李产量的主要气象因子,提出生产建议。     

冀东地区以中元古代碳酸盐岩为容矿岩的浸染型金矿研究的新进展

冀东地区以中元古代碳酸盐岩为容矿岩的浸染型金矿床是近年来新发现的金矿床类型。本人概略介绍了其矿床地质特征、研究现状及其新进展,并明确提出了该类型金矿床的成矿与中新生代火山-次火山（隐爆角砾岩）作用、构造运动及有机质的作用息息相关。