江苏省城市专业气象服务系统   总被引：5，自引：2，他引：3  

卞光辉  方乾 《气象科学》1999,19(4):413-423

本文系统介绍了城市专业气象服务系统的设计思路、流程、功能特征和采用的Internet／Intranet（WWW）技术、Asp语言动态页面设计、自动化语音合成等技术,实现了Novell网、NT、9210网（气象卫星综合应用业务系统）、地面气象专线等联结采集实时气象信息和预报信息。系统具有应用、推广价值。  相似文献   

高精度重磁勘探在推覆体下找煤中的应用   总被引：3，自引：0，他引：3  

袁照令  沈博  李大明  毛小平  曲赞  吴蓉元 《物探与化探》1999,23(4):283-288,295

应用高精度重磁勘探方法解决在推覆体下找煤问题.利用磁异常研究辉绿岩体的赋存状态,肯定了推覆体的存在;根据重力异常及数据处理结果研究推覆体下煤系地层的分布,指出太山-许台重力低带是测区内找煤最为有利的靶区.高精度重磁勘探是推覆体下寻找煤系地层前期勘探的有效手段之一.  相似文献   

The study on the interannual variation and the mechanism of the south china sea monsoon   总被引：1，自引：0，他引：1  

Jiang Jing  Qian Yongfu 《大气科学进展》1999,16(4):544-558

l.Intr0ductionTheonset0ftheSouthChinaSea(SCS)monsoonisasignofthecomingoftheAsianmonsoon.Inaverage,theonsetoftheSCSmonsoonisinthemiddleofMay,butitsstrengthandtheonsetdatediffergreatlyfromoneyeartoanother.TheanomaliesoftheSCSmon-soonhighlydePendonnotonIytheprecipitationinSCS,butalsotheanomaliesofthecircu-lationintheworld.WhyisthemonsoononsetearliestinSCS?Whatisthemechanismoftheonsetanditsvariation?Thisisascientificproblemthatisinterestedinbymeteorologistsbothathomeandabroad.TaoandChen…  相似文献   

Numerical Simulations of Intense Meiyu Rainfall in 1991 over the Changjiang and Huaihe River Valleys by a Regional Climate Model with p-σ Incorporated Coordinate System     

刘华强  钱永甫 《大气科学进展》1999,(3)

1.IntroductionAlthoughGCMsprovedsuccessfulinreproducingthebasicfeaturesoflarge--scaleatmosphericcirculations(Gates,1992),theyaretoocoarsetodescribethedetailsofregionalclimatepatterns(Grotch,etal.,1991).Intheregionswheretheatmosphericdynamicalandphysicalforcingsvaryonascaleoflessthanafewhundredkilometers,suchasinthepresenceofcomplexterrain,afactorof10orgreaterincreaseinmodelhorizontalresolutionmayberequiredtosimulatetherealisticregionalresponsestothefutureclimatechanges.Duetothelimitationsinb…  相似文献   

Numerical simulation of the regional ocean circulation in the coastal areas of china   总被引：3，自引：0，他引：3  

Zhang Yaocun  Qian Yongfu 《大气科学进展》1999,16(3):443-450

The regional ocean circulation in the coastal areas or China (including a part of the western Pacific Ocean, the South China Sea and the Bay of Bengal el al.) is simulated by using the improved Princeton Uni-versity ocean circulation model (POM). Compared with the modeling results obtained by the large-scale ocean general circulation model (OGCM), the basic ocean circulation features simulated by the regional ocean circulation model are in good agreement with that simulated by OGCM and some detailed character-istics such as the regional ocean circulation, sea temperature, salinity and free sea surface height have also been obtained which are in good accord with the observations. These results indicate that the regional ocean circulation model has good capability to produce the regional ocean circulation characteristics and it can be used to develop coupled regional ocean-atmospheric model systems.  相似文献   

青藏高原隆升作用于大气临界高度的数值研究   总被引：21，自引：4，他引：17  

张耀存  钱永甫 《气象学报》1999,57(2):157-167

利用Ｐ－σ混合坐标系全球大气环流模式研究了青藏高原隆升作用于大气临界高度问题,通过对数值试验结果的分析进一步证实了在高原隆升的过程中存在着一个临界高度,这个高度在夏季约为１５００～２０００ｍ。当高原总体平均高度超过临界高度后,高原周围地区的气流主要以绕流为主,爬坡气流的速度较小,稳定的高原季风开始形成,高原地区范围内为强大的上升运动区,高原南侧和中国东部地区出现一条明显的雨带,随着高原隆升高度的增高,雨带内的降水量逐渐增加,同时高原西侧附近地区形成一个稳定的感热通量大值带  相似文献   

CHARACTERISTICS OF 10-DAY MEAN SURFACE SENSIBLE HEAT FLUX VARIATIONS IN THE SCS MONSOON REGION AND POSSIBLE CONNECTIONS WITH THE SCS SUMMER MONSOON ONSET^*     

Zhang Yaocun  Qian Yongfu 《Acta Meteorologica Sinica》1999,13(1):11-20

The time and space variations of the ten-day mean surface sensible heat flux have been analyzed in this paper based on the data of NCEP/NCAR from January of 1979 to December of 1995 in the South China Sea (SCS) monsoon region.It is found that large variations of the surface sensible heat flux standard deviations exist in the northwestern Indochina Peninsula and the Indian Peninsula regions,and their locations and strength change significantly during the onset period of SCS monsoon.The negative deviations appear evidently earlier in the Indocbina Peninsula than in the Indian Peninsula but the deviation strength in the Indian Peninsula is stronger than that in the Indochina Peninsula.The appearance of the zonal negative mean deviations in the southern part of the Indochina Peninsula corresponds to the date of the SCS summer monsoon onset,while the occurrence of the deviation decrease corresponds to the date of the South Asian monsoon onset.The sensible heat flux increases dekad by dekad before the onset of the summer monsoon in the Indian Peninsula and the Indochina Peninsula and decreases after the monsoon onset.Therefore,the surface sensible heat flux changes in the Indochina and the Indian Peninsula regions maybe have some connections with the SCS monsoon onset and the Indian monsoon onset,and the Indochina Peninsula maybe becomes the sensitive or key region to the SCS monsoon onset and the land maybe plays an important role in triggering summer monsoon onset.  相似文献   

CHARACTERISTICS OF 10-DAY MEAN SURFACE LATENT HEAT FLUX VARIATIONS IN THE SCS MONSOON REGION AND POSSIBLE CONNECTIONS WITH THE SCS SUMMER MONSOON ONSET   总被引：1，自引：0，他引：1  

张耀存  钱永甫 《Acta Meteorologica Sinica》1999,(4)

The temporal and spatial variations of the ten-day mean surface latent heat flux (TMLH) havebeen analyzed in this paper based on the data of NCEP from January of 1979 to December of 1995in the South China Sea (SCS) monsoon region. It is found that there exist maximum centers ofTMLH standard deviation in the northwest Indochina and the Indian Peninsula as well as thewestern Pacific, SCS, the Indian Ocean and the Bay of Bengal, and their locations and strengthschange significantly during the period of SCS monsoon onset. A positive zonal deviation of TMLHoccurs first in the Indochina Peninsula, apparently earlier than that in the Indian Peninsula. Theappearance of maximum positive zonal deviations of TMLH approximately coincides with thesummer monsoon onset. Over the Indochina and Indian Peninsulas, the TMLH increases graduallywith a small amplitude of variation before the onset of summer monsoon, and the rate of increase issignificantly enhanced after the onset of the monsoon; whereas over the ocean, TMLH decreasesbefore the monsoon onset, varies little during the period of monsoon and increases gradually afterthe ending of monsoon. Therefore, it seems that the surface latent heat flux plays an importantrole in the maintenance of the summer monsoon, and its variation is an phenomenon accompanyingthe onset of summer monsoon.  相似文献   

北祁连西段寒山剪切带的变形作用及其与金矿化的关系   总被引：7，自引：1，他引：6  

吴茂炳  毛景文  杨建民  张招崇  左国朝 《地质与勘探》1999,35(4):12-14

寒山金矿床赋存的剪切带有两期变形活动。早期韧脆性变形作用是以位错滑移、双晶作用和重结晶作用等变形机制为主,形成各种类型的片糜岩。在变形过程中,大量流体进行水／ 岩反应。晚期变形作用以碎裂和破裂机制为主,形成各种脆性裂隙和角砾岩带。在早期开放的变形环境下,有利于成矿热液的活动和富集,是寒山金矿的主成矿期;晚期的脆性变形使金矿进一步富集  相似文献   

山西五台山地区照山一带基岩地球化学异常特征研究     

陈志宏  骆辉  毛德宝  田永清  余克忍  康慧  马力 《华北地质》1999,(4)

本文通过五台山地区典型地段—照山一带基岩地球化学测量及异常特征的研究 ,并结合区域地质、构造等特征的综合分析 ,提出Au、Ag、Cu、Bi、As为区域金 (铜 )矿地球化学勘查的最佳指示元素组合 ;确定出三个较为重要的矿化带 (区 ) :一个是下龙宿沟—上龙宿沟铜—金矿化带 ,另一个是土岭铁建造金矿化带 ,第三个是台峪口金异常区 ;金矿化的形成受条带状铁建造的发育程度以及区域变质变形作用过程中热流体活动的叠加改造等共同制约。  相似文献