钉钉软件在气象防灾减灾中的应用探讨

钉钉软件是一款智能移动工作平台,将其应用于气象防灾减灾服务,可以提高工作效率,值得推广应用。与短信、电话、即时通讯软件、业务软件等传统服务方式相比,钉钉软件更能提高气象防灾减灾服务的智能化水平,以及工作留痕的信息化水平。钉钉软件特有的DING功能,还可以用于开展“三个叫应”气象服务。     

中蒙边界早白垩世不对称花岗岩穹隆的伸展时限、剪切作用类型和区域构造意义

东北亚大陆于晚中生代时期发生了大规模地壳伸展,发育变质核杂岩和不对称花岗岩穹隆,其伸展剪切机制一直是构造研究的重要内容之一。中蒙边界东南段沿北东向展布了罕乌拉、纳兰和宝德尔等3个不对称花岗岩伸展穹隆,主体均为晚中生代花岗岩侵入体,岩体西北缘发育韧性剪切(糜棱岩)带,并被后期高角度正断层所围限,整体为穹隆状。根据罕乌拉穹隆韧性剪切带内强变形中粗粒钾长花岗岩(133±1 Ma)和弱变形细粒花岗岩(128±2 Ma)的构造关系及其锆石U-Pb年龄,推测该穹隆内岩体可能为同伸展岩体,韧性伸展时间在133 Ma之后并持续至128 Ma或更晚,与同区其他穹隆发育时限相同。笔者用R_f/ф方法测量了3个穹隆剪切带内糜棱岩中长石的有限应变轴率,利用Hsu图解获得其应变类型为平面压扁应变(k=0.5)。用长石极莫尔圆法、刚性颗粒网法和C轴石英组构法估算了韧性剪切的长期变形过程,得到糜棱岩的平均运动学涡度值为0.68～0.74,表明这些穹隆的韧性剪切作用主要是纯剪切和简单剪切分量几乎相等的一般剪切作用。石英斜向条带法测得的韧性变形后期的运动学涡度值为0.87～0.99,平均值为0.93...     

Characterization of hydraulic fracture configuration based on complex in situ stress field of a tight oil reservoir in Junggar Basin,Northwest China

Acta Geotechnica - The Jurassic Badaowan formation of the tight oil reservoir in northwest Xinjiang, China, is featured by a complex in situ stress pattern, leading to an unclear...     

雨滴谱垂直演变特征的微雨雷达观测研究

雨滴谱的垂直变化特征对于认识降水过程、改进模式和雷达定量估计降水等具有重要意义。利用2016年6月1日-9月30日雨量筒、微雨雷达（micro rain radar,简称MRR）和PARSIVEL雨滴谱仪连续4个月的观测数据,在对比3种仪器观测结果的基础上,研究了层状云降水不同降水强度下微物理特征量和雨滴谱垂直演变特征。结果表明:MRR与PARSIVEL雨滴谱仪观测降水强度相关性较好,且两种仪器观测的雨滴谱在中等粒子段（0.5~2.5 mm）表现出较好的一致性,而对于小粒子段（雨滴直径小于0.5 mm）PARSIVEL雨滴谱仪观测的数浓度明显低于MRR。对于弱降水（降水强度R ≤ 0.2 mm·h-1）,液水含量和降水强度随高度降低减小,雨滴在下落过程中蒸发明显。对于较强降水（R>2 mm·h-1）,随高度降低,雷达反射率因子增大,小滴数浓度减小的同时大滴数浓度增加明显,雨滴下落过程碰并作用明显。所有高度直径不超过0.5 mm的小滴对数浓度贡献均为最大。高层雨滴直径不小于1 mm的小粒子对降水强度的贡献可达50%,小粒子对降水强度贡献随高度降低减小。     

Sediment concentrations of heavy metals in the Homa Lagoon (Eastern Aegean Sea): Assessment of contamination and ecological risks

The concentrations of heavy metals and organic carbon in sediment of the Homa Lagoon which is one of the most productive lagoons and commercial important active fish trap in the Eastern Aegean Sea, were investigated in order to describe the temporal and spatial distributions of metals. These results were used to evaluate possible ecological risks that could be a problem for the environment of the lagoon in the future. Sediments were enriched with Cr, Ni and considered as heavily polluted per the SQG. The C_f of Ni and Cr were presented moderate level of contamination in this area. The C_d levels indicated moderate degree of contamination at station B, C, D and E due to agricultural drainage water, industrial and domestic wastewater, are transported by the Gediz River. Sediments from Homa Lagoon were most toxic for Ni due to exceedances of the TEL and PEL values.     

1981—2016年山东陆地观测最大风速变化特征

基于山东1981—2016年121个气象站的年最大风速观测数据,应用气候倾向率、Mann-Kendall检验等方法研究了山东年最大风速的空间分布特征、时间演变规律及突变特征、重现期特征。结果表明：山东年平均最大风速呈逐年波动减小变化趋势,气候倾向率为-1.41 m·s-1·（10 a）-1,减小趋势极显著;沿海地区和鲁中山区最大风速较大,鲁南和鲁西南较小;2000年以来,最大风速相对20世纪80、90年代明显减小;莱州湾、山东半岛东南沿海减小趋势最明显,鲁东南等地减小趋势较小;山东最大风速在2002年前后发生突变,突变后明显减小,不同区域最大风速突变发生年份不同;50 a和100 a最大风速重现期结果与观测的最大风速空间分布类似。     

峡东地区埃迪卡拉系灯影组石板滩段沉积环境探讨

本文通过对峡东地区埃迪卡拉系灯影组石板滩段典型沉积岩的岩石学特征及沉积构造进行详细研究,取得了石板滩段主体沉积形成于台地边缘浅滩-台缘缓斜坡的较多证据,并首次发现了该段地层中保存的十分完整的诸如丘(洼)状交错层理、粒序层理、冲刷-充填构造、渠铸型构造在内的典型的风暴沉积构造。通过对沉积特征、风暴序列的分析认为石板滩段沉积是受风暴作用改造的产物,其主体沉积背景属于正常浪基面与风暴浪基面附近的受周期性风暴影响的台地边缘-台缘缓斜坡环境。     

糯性植物用于北京古北口明长城建筑粘合剂的淀粉粒证据

本文通过对北京古北口蟠龙山段明长城城墙砖缝间粘合剂样品的碘-淀粉实验和淀粉粒分析,发现长城粘合剂样品中残留有植物淀粉粒,碘-淀粉实验显红棕色,表明淀粉以支链淀粉为主,具糯性;镜下检测到的淀粉粒具十字消光特征,粒径大于l0μm,具有粟类淀粉粒的一些形态特征.进一步通过对现代小米的糊化过程实验和淀粉粒形态变化对比分析,表明长城粘合剂样品中观察到的淀粉粒与现代小米加热后糊化-半糊化的淀粉粒相似.本研究发现了长城粘合剂中粘性植物添加料的直接证据,与史料记载的一些古建筑所使用的“糯米灰浆”有相似之处,但添加植物显然不是糯米.本研究丰富了对古代粘性植物材料的认识,为了解我国明代长城的建筑工艺及文物保护提供了依据.     

云南广南南瓜地土壤地球化学特征及找矿远景

南瓜地土壤地球化学异常以As、Sb、Au、Ag为主,圈定Ⅰ类异常(Au、Sb、As)一个,Ⅱ类金异常2个.异常中心明显,浓度高,连续性好,沿闪长岩岩体及接触带分布.而线性构造与矿点叠合处即是找矿远景区.     

A Comparative Study for 3D Surface Modeling of Coal Deposit by Spatial Interpolation Approaches

The planning stages of mining require comprehensive and detailed analyses. The proper determination of the orebody boundary is one of the most important points to provide optimum model structure and projections. The limits can be determined by different methods based on the site geology. Although some three dimensional (3D) models were proposed for providing detailed information concerning a mine deposit, developing a solid model via a 3D approach is novelty. In other words, surface modeling should be performed for creating a solid model and determining limits of the deposit. In this way, sensible generation of the surface model can be achieved. This study investigated the estimation capability of the polynomial approach, which is a novel spatial interpolation method, for modeling a coal deposit surface. The performance of the proposed model was compared with some conventional methods in the literature. The results showed that the polynomial interpolation method is an effective method to employ for surface modeling of a mine deposit.