2000年以来库尔勒市果树冻害气象条件综合分析

2000年以来,巴州地区出现了3次较明显的冻害天气,其中库尔勒2次,焉耆盆地和静1次。本文从低温天气前期气候特征、低温强度及持续时间、积雪、地温、冻土深度等方面入手对库尔勒2000年以后的2次果树冻害天气进行综合分析,找出能提前表征果树冻害的相关气象参数,为巴州林果业气象决策服务提供必要参考,提高气象防灾减灾能力。     

WILD T_3经纬仪竖盘光路检修工艺

由于T_3仪器的竖盘光路采用与T_2不同的结构，因此竖盘光路的检修具有其特殊性。本文着重介绍竖盘的拆卸步骤，同时介绍一种简单的竖盘光路调整附加设备，从而简化了光路的调整。     

EOT2000红外测距仪的光学调整

本刊在1983年第5期上刊载的“EOT2000的四轴问题”一文对于EOT的四轴之间关系作了初步的探讨，为EOT的光学调整作了准备，本文将就结构原理及工艺上对EOT的光学调整进行论述。     

约坝跋煲蛩胤治鲈?徐文体;王玉

制中心 广东广州510300,广州市疾病预防控制中心,广东广州510300登革热;;疫情;;流行病学因素目的分析2006年广州市登革热疫情,寻找病例发病后被及时报告的影响因素,为下一步疾病监测系统及早发现病例提供参考。方法通过对2006年广州市部分网络直报、现场调查和医院上报病例资料时     

鄂尔多斯盆地东缘MG区块煤层裂缝发育多尺度预测

查明煤层裂缝的发育特征,对于煤层气开采及井下煤矿安全生产都具有重要意义.测井及地震是煤层裂缝的地球物理识别的有效手段,针对鄂尔多斯盆地东缘MG区块,利用电成像、电阻率、密度、声波时差、自然伽马、中子孔隙度和阵列声波等测井曲线对8+9号的煤层小尺度裂缝的地球物理响应进行了描述;利用OVT(Offset Vector Ti...     

Neotethyan Evolution of the Ankara Mélange,Turkey: An Intraoceanic Subduction-Accretion System

<正>We report here new geochemical and geochronological data from mafic-ultramafic rock suites in the Ankara Mélange in north-central Turkey,and present a new tectonic model for its origin.Considered as one of most important relics of the Neotethyan realm in the region,the Ankara Mélange occurs between the Sakarya Continent     

TREND OF PRECIPITATION VARIATION IN HUBEI PROVINCE SINCE THE 1960S

1INTRODUCTIONOneoftheeffectsofglobalwarmingisthatprecipita-tionhasincreasedoversomeareasintheworld,andthegaugedataofprecipitation (excludingAntarctica)showthatglobalprecipitationhasincreasedslightlybyabout9mmforthe20thcentury, whichwas verysmallcomparedwiththeinterannualandmul-ti-decadalvariability(NEWetal.,2001).Butregion-ally,thereexisted agreatdealofdifferences,suchasinmostpartsofAfrica, Amazon,westernSouthAmerica,theweatherhasbecomedrier,andinmostpartsofEuropeandCanada,thereexisted…     

The Latest Research Progress on El Nino

Cold water in the deep Pacific can be drawn up to the surface (or west warm water drifts eastwards) because strong tide increases the mixing of seawater both in vertical and horizontal. In this way greenhouse effect is decreased or in-creased by means of absorbing (or releasing) CO2. Therefore, La Nina cold event (or El Nino warm event) may occur, which is caused by wanning - up or cooling - down air above the ocean. Volcanic action at sea bottom is also controlled by strong tide.     

Rogoznica Lake(Croatia),a Unique Euxinic Seawater System on the Adriatic Coast

正1 Introduction Rogoznica Lake is a typical example of euxinic saline lake,situated on the eastern Adriatic coast(43o32’N15o58’E).It is a karstic depression filled with seawater,