The Hydromedusae and its distribution in Chukchi Sea and adjacent southern edge waters of Canada Basin, Arctic Ocean          下载免费PDF全文

张金标  林茂 《极地研究》2001,12(2):133-144

The present paper is based on materials collected in Chukchi Sea and adjacent southern edge waters of Canada Basin, Arctic Ocean during the period from July to August 1999 on the icebreaker, the R/V "Xuelong", by the Chinese First Arctic Scientific Expedition. Totally, 8 species of pelagic Hydromedusae were identified, of which 4 species belonged to Anthomedusae, 2 species to Leptomedusae, 1 species to Trachymedusae and 1 species to Narcomedusae, the Neoturris breviconis is recorded for the first time in Chukchi Sea. Their principal morphological characteristics are described and illustrated. The 8 species of Hydromedusae occurring in the Chukchi Sea were all cold water species, of which 6 species belong to neritic species and 2 species to ocean species. According to the geographic distribution of species, they may be divided into three groups: Arctic species, Arctic-boreal species and Boreal-temperate species. From the view-point of zoogeography, species from these waters belong to the Arctic fauna.The abundance of Hydromedusae in Chukchi Sea was generally low, with a mean value of 108 ind.·10 -2·m -3. Rathkea octopunctata and Aglantha digitale were dominant species. From the view-point of vertical distribution Aglantha digitale is inhabiting in the depth of 0 300 m and with the maximum in the depth of 50 m to 100 m.  相似文献   

鸭河口水库流域高炮人工增雨试验效果评价     

李冰台林茂  李海彬孙长林　杨晓平 《气象与环境科学》2001,(1):39-40

1998、1999年夏季在鸭河口水库流域进行了高炮人工增雨作业试验,结果表明,借助雷达引导,选择适当作业时机,高炮增雨作业一般可增雨20%～40%.  相似文献   

县局预报平台设计     

李朝兴  冶林茂等 《河南气象》2002,(3):42-43

介绍了县级气象局预报平台的设计思路和基本框架。  相似文献   

海东地区气候及气候变化对农业生态环境的影响     

殷显辉冶明珠  杨文辉 《青海气象》2006,(4):20-22

本文从海东地区的气候及特点和农业生态环境的关系出发，通过对代表海东地区东、南、北三个地区的民和、化隆、互助三县近40a气温、降水等资料的统计，分析海东地区气候变化对该地区农业生态环境的影响，并提出相应的治理对策。  相似文献   

三门峡市2005—08—17暴雨天气过程分析          下载免费PDF全文

张雪民范学林  高省莉冶林茂 任轶 《气象与环境科学》2007,30(B09):48-51

利用“9210”实时资料，欧洲ECMWF和T213格点资料、物理量分析场，分析了2005—08—17三门峡市暴雨过程中500hPa、700hPa、地面天气形势及流场、水汽通量、总温度平流、散度，结果表明：副高东退，随着短波槽的东移加深，850hPa和700hPa槽前形成了≥6m／s的偏南气流，打开了水汽通道，为暴雨形成提供了充足的水汽来源；中高层低槽后部冷空气的斜压作用以及地面西路冷锋的触发抬升，加之散度场上低层强烈辐合、中层上升、高层辐散的耦合机制，为暴雨形成提供了充足的动力条件。  相似文献   

Analysis of the distribution characteristics of 226Ra and 228Ra and their sources in the western part of Qinghai Lake     

孔凡翠  沙占江  杜金洲  苏维刚  于晨光  赵顺利  胡菊芳  冶梅 《中国海洋湖沼学报》2015,33(6):1402-1412

The 226 Ra and 228 Ra activities of Qinghai Lake surface water,groundwater,river water,suspended particles,and bottom sediments were measured in a gamma-ray spectrometer.The sources of 226 Ra and 228 Ra were discussed according to their distribution characteristics.226 Ra and 228 Ra activities(dpm/(100 L)) ranged from 14.13±0.22 to 19.22±0.42 and 17.72±0.66 to 30.96±1.47 in the surface water of the North Bay,respectively,and from 7.88±0.24 to 33.80±0.47 and 15.73±0.74 to 57.31±1.44,respectively,in the South Bay.The surface water near the estuary had a lower salinity and had a higher concentration of radium isotopes than the samples collected further away.The farther offshore the sample,the higher the salinity was,and the lower the radium isotope activity.The distribution of radium activities in the western part of Qinghai Lake is controlled by several factors,including Buha River runoff,desorption from suspended particles derived from the river,groundwater discharge,and a small amount of diffusion from the sediment.  相似文献   

青海湖尕海地下水输入及其物质通量     

沙占江  拉本  孔凡翠  李玲琴  张凯  赵石磊  冶梅  马玉军  胡菊芳  王求贵 《地质学报》2015,89(Z1):282-285

<正>尕海位于青藏高原东北部36°57'10.94"N-37°3'18.60"N、100°31'21.78"E-100°36'55.47"E,位于青海湖东北岸,海拔3196.6m,湖水面积约47.5km2,长轴走向西北,轴长约12km,短轴最宽处约6km,从湖岸向湖中心400 m左右就到湖底,湖水深8-9m,是青海湖的三个子湖之一。周围没有  相似文献   

南海管水母类的生态地理学研究   总被引：7，自引：1，他引：7  

张金标  林茂 《海洋学报》1997,19(4):121-131

在过去分类学和地理分布研究的基础上,提出一份南海管水母类93种名录和在中国邻近海域地理分布的完整资料;根据各海域管水母的优势种、生活习性及与邻近海域的相似性分析,提出南海管水母类动物地理区划跨越印度-西太平洋区中-日亚区和印度-西太平洋区印-马亚区;根据管水母类的地理分布与海洋环境关系的分析,将南海省水母类分为4个生态类群,并指出各类群的代表种及其对海洋水文特征的指示作用。  相似文献   

台湾海峡西部海域水螅水母类和管水母类的垂直分布   总被引：4，自引：0，他引：4  

张金标  林茂 《台湾海峡》2001,20(1):1-8

本文报道了台湾海峡西部海域夏、秋季水螅水母类和管水母类的垂直分布，结果表明：这两类浮游动物的种类数一般以中层（10－25m）和上层（0－10m）居多，而平均丰度则以上层最大，这主要是由于主要种四叶小舌水母、两手筐水母、双生水母和长囊无棱水母多栖息于上层之故。本文还讨论了这两类水母垂直分布的类型及与水温、光强和铒料的关系。  相似文献   

台湾海峡西部海域浮游动物的基本特征   总被引：8，自引：1，他引：8  

蔡秉及  连光山  林玉辉  林茂  戴燕玉  林景宏  陈瑞祥 《海洋学报》1995,17(2):93-98

本文研究台湾海峡西部海域浮游动物的种类组成,共记录各类别浮游动物491种,划分4个生态类群,以暖水性类群为主体,体现亚热带性质的群落结构特点.同时,研究浮游动物总种数的季节变化及平面分布与环境因子的关系.  相似文献