气象影视素材数字化存储系统的设计及应用     

陶平  杨蒙  布亚林 《河南气象》2007,(2)

介绍了利用非线性编辑系统和磁盘阵列等相关设备,对河南省气象影视中心保存的视音频素材进行数字化处理的方法,以及利用SQL数据库技术和ASP.NET编程语言,实现气象影视素材的数字化采集、信息标引编目、存储及管理、检索及共享等功能,建立河南省气象影视素材存储系统的关键技术。  相似文献   

The Performance of Vector Oriented Data Storage Strategies in ESRI's ArcGIS     

James K Batcheller  Bruce M Gittings  Steve Dowers 《Transactions in GIS》2007,11(1):47-65

The emergence of Geographical Information Systems (GIS) as an important tool in the analysis of spatial phenomena has been mirrored by the evolution of the data models underpinning such systems. When considering vector‐based solutions, such developments have seen a migration from single‐user, file‐based, topological hybrid models to multi‐user database management system (DBMS) based integrated formats, often with no inherent topology. With all these solutions still being readily available, the decision of which to employ for a given application is a complicated one. This study analyses the performance of a number of vector data storage formats for use with ESRI's ArcGIS, with the aim to facilitate the ‘intelligent selection’ of an appropriate solution. Such a solution will depend upon the application domain and both single‐user and multi‐user (corporate) scenarios are considered. Findings indicate that single‐user ESRI coverages and multi‐user ArSDE/Oracle strategies perform better when considering the range of GIS operations used to evaluate data store performance.  相似文献   

贮存环境对气球升空高度的影响初探     

汤文宁 《气象研究与应用》2007,28(1):84-85

施放高度是高空气象探测五项业务考核指标之一,研究气球贮存环境对探测高度的影响,对提高探测高度服有直接的关系。  相似文献   

苏北—南黄海盆地工业固定排放源CO2 地质封存源汇匹配研究     

莫航  刘世奇  桑树勋 《地质论评》2023,69(Z1):128-130

  相似文献   

岩浆岩与变质岩分布区蓄水构造模式浅析——以胶东地区为例          下载免费PDF全文

刘春伟  胡彩萍  李传磊  刘帅  李波  吴璇  刘小天 《地质论评》2023,69(2):526-534

胶东地区地层岩性多为岩浆岩和变质岩,富水性差异大,整体为缺水区。伴随着社会经济发展,人民对美好生活的需求不断提升,优质、稳定的地下饮用水也成为胶东人民的重要民生问题之一。笔者等通过大比例尺水文地质调查成果总结和已有研究成果分析,结合地下水勘查案例,从水文、地形地貌、含水层岩性和地质构造4个方面,对岩浆岩地区的地下水富集机理进行分析,提出了断裂型、接触带型、岩脉型、洼地风化带型和多期变质作用形成的5种蓄水构造模式,并对各类蓄水构造特征进行了分析,同时总结了风化裂隙水、构造裂隙水和岩溶裂隙水3类岩浆岩、变质岩分布区裂隙水的找水方向,进一步丰富了岩浆岩与变质岩缺水地区蓄水构造模式研究,对该地区地下水资源探寻具有一定的指导作用。  相似文献   

典型表层岩溶泉域植被对降雨的再分配研究   总被引：1，自引：1，他引：0  

邓艳  蒋忠诚  徐烨  岳祥飞  李旭尧  梁锦桃 《中国岩溶》2018,37(5):714-721

本文在表层岩溶泉域植被结构特征分析的基础上,监测桂林丫吉试验场S31号泉域内香椿和云实两种主要植被的穿透雨和树干径流特征以及钻孔和表层岩溶水的变化。结果表明:香椿林的总穿透雨量1 861.83 mm,占总降雨总量的59.65%;云实灌丛总的穿透雨量为1 626.42 mm,占总降雨量的52.11%;穿透雨率随降雨量增加而减少。香椿林的树干径流总量为89.4 mm,占总降雨量的2.86%;云实灌丛的树干径流总量为27.79 mm,占总降雨量的0.89%;香椿林和云实灌丛的林冠截留总量分别为1 169.97 mm和1 466.99 mm,平均截留率为37.48%和47.01%;用水量平衡法计算得出以灌丛覆盖为主的S31号表层岩溶泉域年蒸散量为1 623.81 mm,占降水量的52.03 %,年径流深度为1 497.39 mm,占降水量的47.97%。植被冠层改变了降雨对表层岩溶带的补给形式和补给量。降雨经过植被冠层的截留后转化成穿透雨和树干径流进入表层岩溶带,穿透雨以连续波状的形式补给表层岩溶带,而树干径流则以快速集中的方式补给表层岩溶带。   相似文献   

Application of CSAMT in hydrogeology exploration in Shandong Province–An example from geothermal exploration in Changdao County(south four islands)          下载免费PDF全文

CAO Yan-ling  CHENG Gang-jian  ZHAO Cheng-liang  WANG Tao  JIANG Hai-yang 《地下水科学与工程》2018,6(1):58-64

The geophysical exploration in Changdao County is conducted using controlled source audio-frequency magnetotelluric(CSAMT) method. The inversion results reveal obvious evidences of one existed fault and five new blind faults, including their location, size, occurrence and development degree. Another two low resistance anomaly zones are delineated. According to the results, a geothermal well drilling test is applied in the middle of South Changshan Island, discovering a large flow of salt hotspring with bromine and strontium. The outlet temperature is 36 ℃ and the yield of a single well is 1 830 m~3/d. This study on island hotspring exploration marks the first of its kind conducted in Shandong Province. It provides basic high-quality information for subsequent similar studies.  相似文献   

The discovery of the Antarctic Ozone Hole     

《Comptes Rendus Geoscience》2018,350(7):335-340

  相似文献   

贵州安底温泉水温水量变化原因分析     

蒲文斌  冯福  羊永夫  周维星  丁坚平 《地下水》2015,(3)

安底温泉(7号孔)自2012年10月开始,出现水温降低水量减少的异常现象。通过地质环境调查分析得出:遭受2012年9月7日昭通地震影响,加剧孔壁垮塌堵塞,是水温降低水量减少的主要原因;温泉所处的背斜热储构造,不存在过量开采引发资源量不足而使水温水量降低的问题。建议启动备用井方案,设置过滤网保护等措施,满足温泉可持续利用。  相似文献   

Responses of phreatophyte transpiration to falling water table in hyper-arid and arid regions,Northwest China     

《China Geology》2021,4(3):410-420

Quantitative assessment of the impact of groundwater depletion on phreatophytes in (hyper-) arid regions is key to sustainable groundwater management. However, a parsimonious model for predicting the response of phreatophytes to a decrease of the water table is lacking. A variable saturated flow model, HYDRUS-1D, was used to numerically assess the influences of depth to the water table (DWT) and mean annual precipitation (MAP) on transpiration of groundwater-dependent vegetation in (hyper-) arid regions of northwest China. An exponential relationship is found for the normalized transpiration (a ratio of transpiration at a certain DWT to transpiration at 1 m depth, T_a*) with increasing DWT, while a positive linear relationship is identified between T_a* and annual precipitation. Sensitivity analysis shows that the model is insensitive to parameters, such as saturated soil hydraulic conductivity and water stress parameters, indicated by an insignificant variation (less than 20% in most cases) under ± 50% changes of these parameters. Based on these two relationships, a universal model has been developed to predict the response of phreatophyte transpiration to groundwater drawdown for (hyper-) arid regions using MAP only. The estimated T_a* from the model is reasonable by comparing with published measured values.© 2021 China Geology Editorial Office.  相似文献