基于民用移动通信网为主的混合型遥测雨量系统设计     

阿地里江  张清  郝雷  买丽坎 《沙漠与绿洲气象(新疆气象)》2006,29(5):31-33

作为气象预报、水文监测、环境监测的重要辅助工具雨量计,在近几年得到了较快的发展,功能已经从人工抄写,自动定时采集发展到可随时动态测量,其应用范围得到了很大的扩展。新的雨量计系统正逐步进入更多领域,如大量的点雨量站能很好地修正雷达测量降水的精度,从而得到精确的面雨量数据。提供的瞬时雨强、累积雨量和降水变化趋势数据对水文管理和防洪减灾起着重要的保障作用。借助高效的数据库管理方式,可及时、全面地了解各地的自然降水和人工作业后的雨水分布情况,从而方便地统计出人工影响天气的作业效果,进而做出最佳作业部署和决策,形成…  相似文献   

塔里木盆地一次特大暴雨过程的分析   总被引：2，自引：0，他引：2  

阿不里米提·塔西  王旭 《沙漠与绿洲气象(新疆气象)》2002,25(1):12-14

对1995年9月3－7日塔里木盆地特大暴雨的发生条件进行了诊断分析，用卫星红外云图的云顶黑体温度揭示出青藏高原对流单体北上与低涡云系结合造成和田地区特大暴雨。  相似文献   

48和60小时近地面气温预报     

阿·伊·斯尼特科夫斯基  蒋伯仁 《气象研究与应用》1985,(2)

本文用MOS观点,给出用回归方程制作48小时最低温度和60小时最高温度的预报方法。  相似文献   

白云母的普查勘探方法     

米·阿·馬尔丁諾夫  史崇周 《中国地质》1959,(8)

(一)偉晶岩脉形成的条件伟晶岩的形成与深成断裂构造有关,由于深成岩的存在往往形成一个大的伟晶岩带,如在西伯利亚地台边緣的东西伯利亚伟晶岩带,长4000公里;美国有一伟晶岩带长2000公里。在伟晶岩带中不可能都是伟晶岩,它是伟晶岩分布的一个最大的构造单元,在伟晶岩带中伟晶岩的分布也是断續的。伟晶岩的发育与一  相似文献   

防治土壤盐碱化最优灌排模型   总被引：4，自引：0，他引：4       下载免费PDF全文

彭世彰买买.  阿 《水科学进展》1995,6(3):182-188

将作物临界土壤含盐量和地下水临界埋深等概念应用于防治灌区土壤盐碱化最优规划,提出了非线性规划最优灌排模型.以新疆巩留县团结灌区灌排工程为实例,求解了不同年型(P=20%、50%、75%、95%)的防治土壤盐碱化灌排优化决策,求得的灌排水量、淋洗水量、作物生长季节土壤盐分动态变化及地下水位年内调控过程等结果,与灌区实际情况拟合较好.  相似文献   

An assessment of an environmental gradient using coral geochemical records, Whitsunday Islands, Great Barrier Reef, Australia     

Lewis SE  Brodie JE  McCulloch MT  Mallela J  Jupiter SD  Williams HS  Lough JM  Matson EG 《Marine pollution bulletin》2012,65(4-9):306-319

Coral cores were collected along an environmental and water quality gradient through the Whitsunday Island group, Great Barrier Reef (Australia), for trace element and stable isotope analysis. The primary aim of the study was to examine if this gradient could be detected in coral records and, if so, whether the gradient has changed over time with changing land use in the adjacent river catchments. Y/Ca was the trace element ratio which varied spatially across the gradient, with concentrations progressively decreasing away from the river mouths. The Ba/Ca and Y/Ca ratios were the only indicators of change in the gradient through time, increasing shortly after European settlement. The Mn/Ca ratio responded to local disturbance related to the construction of tourism infrastructure. Nitrogen isotope ratios showed no apparent trend over time. This study highlights the importance of site selection when using coral records to record regional environmental signals.  相似文献   

西班牙的矿山土地复垦工作     

巴尔.  EG  石宏仁 《国土资源信息化》1996,(4):12-15

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昌吉市地温与气温关系初探   总被引：3，自引：0，他引：3  

阿帕尔  叶尔克江  冯俊平 《沙漠与绿洲气象(新疆气象)》2007,1(3):53-56

运用气象统计学和气象学的原理和方法,分析昌吉市地面气象观测站1961～2004年的逐日平均气温资料和逐日地面温度资料,建立了以气温为基础的地温预算模型,并探索昌吉市地气温差的年变化规律。  相似文献   

矿物标本类型(型式)的正式定义     

皮.杰.邓  爵.阿.曼达理诺  郭宗山 《岩石矿物学杂志》1987,(4)

导言标准标本(type mineral specimens)是用以确定矿物种属的考证样品。在生物科学中很久以前就建立了标准标本制度,而在矿物学界直到最近才正式提出标准标本制。确实,有许多在古代和本世纪发现的矿物根本就没有标准标本。在这种情况下能得到的最多信息只是博物馆里卡片上或老的标签上的记载,如  相似文献   

Carbon speciation and composition of natural microbial communities in polluted and pristine sediments of the Eastern Mediterranean Sea     

Polymenakou PN  Tselepides A  Stephanou EG  Bertilsson S 《Marine pollution bulletin》2006,52(11):1396-1405

Sediment samples collected from polluted (Augusta Bay) and pristine regions of the Eastern Mediterranean Sea (South Ionian Sea, Thracian Sea) were analyzed for black carbon, aliphatic hydrocarbons and phospholipid ester-linked fatty acids (PLFA). The aim of the study was to investigate the anthropogenic and biogenic inputs into the Eastern Mediterranean Sea and to evaluate the effects of refractory organic matter (e.g. black carbon) and the level of hydrocarbon contamination on benthic microbial community composition. Black carbon, generally considered to be chemically and biologically inert, comprised a significant but highly variable fraction of the sedimentary carbon pool in the analyzed sediments with a ratio to total organic carbon ranging from 0.02 to 0.66. Principal component analysis of the chemical characteristics of the sediments (organic carbon content, black carbon, bioavailable organic carbon, chlorophyll a, phaeopigments, aliphatic hydrocarbons) revealed clustering of samples along a gradient from the most productive and contaminated region of Augusta Bay to the carbon-poor and pristine sediments of the Thracian Sea. PLFA analysis revealed that gram-negative bacteria and microeukaryotes were most abundant in Augusta Bay and in the most impacted station of the Thracian Sea. The high levels of branched and odd-chain fatty acids recorded for these stations is probably linked to the elevated amounts of hydrocarbons at these stations; e.g. microbial communities may have developed the ability to degrade either naturally occurring aliphatic hydrocarbons or hydrocarbons derived from oil contamination.  相似文献