地震台站自动监控与管理软件

研发地震台站自动监控与管理软件,其主要功能是对台站不同种类的数字化地震仪器,按照不同的通讯规程和特征进行自动连接登录,数据采集,判断仪器工作状态和数据异常情况并进行告警;工作日志自动填写;对日常工作中的突发或惯例性事件提醒,充分发挥程序的人工智能优势。告警可采用音乐、网络平台、短信猫方式。软件在几个台站的应用情况显示,其方便高效,能确保仪器工作正常,减少人为失误,对提高观测质量、及时发现数据异常具有积极作用。     

A stochastic optimization model based on adaptive feedback correction process and surrogate model uncertainty for DNAPL-contaminated groundwater remediation design

A stochastic optimization model based on an adaptive feedback correction process and surrogate model uncertainty was proposed and applied for remediation strategy design at a dense non-aqueous phase liquids (DNAPL)-contaminated groundwater site. One hundred initial training samples were obtained using the Latin hypercube sampling method. A surrogate model of a multiphase flow simulation model was constructed based on these samples employing the self-adaptive particle swarm optimization kriging (SAPSOKRG) method. An optimization model was built, using the SAPSOKRG surrogate model as a constraint. Then, an adaptive feedback correction process was designed and applied to iteratively update the training samples, surrogate model, and optimization model. Results showed that the training samples, the surrogate model, and the optimization model were effectively ameliorated. However, the surrogate model is an approximation of the simulation model, and some degree of uncertainty exists even though the surrogate model was ameliorated. Therefore, residuals between the surrogate model and the simulation model were calculated, and an uncertainty analysis was conducted. Based on the uncertainty analysis results, a stochastic optimization model was constructed and solved to obtain optimal remediation strategies at different confidence levels (60, 70, 80, 90, 95%) and under different remediation objectives (average DNAPL removal rate ≥?70,?≥?75,?≥?80,?≥?85,?≥?90%). The optimization results demonstrated that the higher the confidence level and remediation objective, the more expensive was remediation. Therefore, decision makers can weigh remediation costs, confidence levels, and remediation objectives to make an informed choice. This also allows decision makers to determine the reliability of a selected strategy and provides a new tool for DNAPL-contaminated groundwater remediation design.     

A GIS Approach to Prediction of Copper Deposits

INTRODUCTIONGeo-anomaly (GA) ,according to the Geo-Anomaly The-ory proposed by Professor Zhao Pengda,is the geological bod-ies or the combination of the geological bodies that are obvi-ously different from their surrounding geological bodies instructure,formation and genetic sequence.The ore body is avery special type of GA.The examination of the GA environ-ment is the basis of ore-prospecting,the premise of ore-find-ing and the criterion of target selection (Chi et al.,1 997) .The G…     

锌试剂与微量汞反应的分光光度研究及环境学意义

本文研究了在ＰＨ＝６．７０的缓冲溶液（ＫＨ２ＰＯ４－ＮａＯＨ）中锌试剂与汞生存的蓝色配合物。在最大吸收外吸光度与汞离子的含量成线性关系,配合物的吸收峰值为λｍａｘ＝５４５ｎｍ,比锌试剂本身吸收峰值４９０ｎｍ位移５５ｎｍ,配合物的表观摩尔吸光系数εε＝２．８＊１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１。汞离子的标准工作曲线在０．１－２５μｇ．ｍＬ＾－１的范围内,符合朗伯－比定律。最低检测浓度为０．０１μｇ     

不同Legendre函数递推公式对计算球谐函数定积分的影响

针对球谐函数定积分计算中Legendre函数递推问题展开研究,分析了标准向前列推法、Belikov法、跨阶次法、X数法以及顾及麦克劳林级数展开式对球谐函数定积分计算的影响。利用Eigen6c-4地球重力场模型计算扰动引力梯度径向分量,分析不同方法之间的差异。实验表明,不考虑麦克劳林级数展开式时4种方法的相对精度在高纬度地区较差,但计算模型扰动引力径向分量的精度一致,结合麦克劳林级数式可提高高纬度地区定积分计算的相对精度,但会降低中低纬度地区定积分计算的精度,并且对高纬度地区扰动引力径向分量的影响极小,但会严重降低低纬度地区扰动引力梯度计算的精度。     

近40年中国近海波浪数据库的建立及极值分析

采用TOMAWAC模型模拟近岸40年的波浪要素。波谱计算采用36个方向,模拟波周期范围为1.5～29 s,并对极值波况进行分析。统计了1979—2018年间有效波高的年极值,算得百年一遇的有效波高,发现百年一遇波高由北往南总体呈现增大趋势:渤海和黄海的百年一遇的波高不超过10 m;东海百年一遇的波高在15～22 m之间;南海北部百年一遇波高的范围比较大,靠近台湾部分最大达到了22 m,海南岛西部较小,在10～15 m之间。引用SET值相关指标对极端波浪的发生次数、持续时间和强度进行分析,发现渤海、黄海北部、台湾海峡以及南海西北部极端事件频繁发生,平均每年有5～7次,台湾岛西南部极端事件的平均历时最大,达到了32 h。     

决口海堤洪水波传播模拟和分析研究Ⅰ:方法和验证

选用水槽和港池物理模型方法以及已有的一些物理模型试验成果,结合SWASH模型,对孤立波在海堤斜坡上的爬高和越浪进行验证,确定合适的计算参数;计算和分析几种不同内坡形式的海堤堤顶决口,确定合适的海堤内坡边界条件。研究分析表明,验证后的SWASH模型可以用来进行海侧来波和陆域越堤波浪的联合计算,为决口海堤洪水波传播模拟和分析奠定了基础。     

内蒙古河套平原耕地盐碱化时空演变及其对产能的影响

以内蒙古自治区巴彦淖尔市河套平原为研究区,利用RS和GIS技术在野外样本采集的基础上,以第一次地理国情普查数据和LandsatTM/OLI、GF-1卫星影像为数据源,通过计算盐碱度与波段的相关性构建出反演模型,以专家决策树进行分类,对2006~2014年耕地盐碱化进行动态监测,并分析了不同盐碱化程度农田植被净初级生产力（NPP）时空变化特征。结论表明：2006~2014年研究区域非盐碱耕地和轻度盐碱耕地面积呈现持续减少的趋势,减少幅度为6.23%,占耕地总面积的3.55%,NPP先增后降,减少了2.06%;中度盐碱耕地面积呈先降后增的趋势,净增加幅度为22.40%,占耕地总面积的5.10%,NPP先不变后增加,增加了6.73%;而重度盐碱耕地面积呈现先增后降的趋势,净减少7.68%,占耕地总面积的1.55%,NPP则持续增加,增加了3.81%。总体上看,9 a间虽然因为自然、人为因素的影响,中度盐碱耕地面积增长,但可利用土地面积和有效耕地面积不断增加,且改良区域的NPP处于持续增长的趋势,在一定程度上说明盐碱地治理取得了成效。     

Analyses of egg size,otolith shape,and growth revealed two components of small yellow croaker in Haizhou Bay spawning stock

The geographical variations in life history characteristics of small yellow croaker Larimichthys polyactis, caused by experienced different environmental conditions, have been observed in China seas. Previous studies based on spatial distribution, migration route, and body morphometrics suggested a complex stock structure. In this study, to clarify the source of a spawning stock, we investigated the reproduction strategy and inter-structure of the Haizhou Bay (HZB) spawning stock in the middle Yellow Sea from both egg survey and adult otolith increment analysis. Egg and adult samples were collected from three surveys during spawning season in 2013. Distinct spatial and temporal variations were detected in egg distribution and size, and otolith shape analysis of adult fishes revealed two morphotypes with different increment growth using random forest cluster. The results indicate the existence of two components within the same spawning stock in HZB from different wintering grounds, and accordingly special protection should be required for this stock given the significance to maintain connectivity between adjacent subpopulations.