The climate change effect on probable maximum precipitation in a catchment. A case study of the Karun river catchment in the Shalu bridge site (Iran)     

Z. Ramak  J. Porhemmat  H. Sedghi  E. Fattahi  M. Lashni-Zand 《Russian Meteorology and Hydrology》2017,42(3):204-211

Probable maximum precipitation (PMP) is assessed on the example of the Karun catchment (the Shalu bridge area). The climate change effects on PMP are investigated under three scenarios: A1B, A2, and B1. It is established that the PMP value for 24, 48, and 72 hours is 127, 170, and 185 mm, respectively. It is demonstrated that the PMP value will decrease by up to 5% under A1B scenario, and will increase by up to 5% and 10% under A2 and B1 scenarios, respectively.  相似文献   

Long-term changes in the number and temperature of hot days in Georgia under global warming     

E. Sh. Elizbarashvili  M. E. Elizbarashvili  N. B. Kutaladze  Sh. E. Elizbarashvili  N. Z. Chelidze 《Russian Meteorology and Hydrology》2017,42(10):665-670

Variations in the number of hot days, their frequency, intensity, and duration in Georgia are studied using observational data from 50 weather stations for the period of 1936-2013. The periods of the onset of hot days in the year and their maximum intensity in different physiographic conditions are identified. The zoning of Georgia was carried out according to the rate of changes in the number of hot days. The results enhance the understanding of climate change in Georgia under global warming conditions.  相似文献   

A conventional value for the geoid reference potential W_{0}   总被引：1，自引：1，他引：0  

L. Sánchez  R. Čunderlík  N. Dayoub  K. Mikula  Z. Minarechová  Z. Šíma  V. Vatrt  M. Vojtíšková 《Journal of Geodesy》2016,90(9):815-835

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QUESTION RAISED BY A MAP OF THE 1971 INDIAN ELECTIONS     

K. Z. Amani 《The Professional geographer》1974,26(2):207-209

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A photometric study of three star fields in the southern region of M33     

P. Z. Kunchev  N. S. Nikolov 《Astrophysics and Space Science》1986,127(2):327-343

The 2 m RCC telescope of the Rozhen National Observatory (Bulgaria) was used to obtain the colour-magnitude and colour-colour diagrams of OB110 and OB112 associations which form the largest star grouping in the southern region of M33. The stars withV andU20.4 andB21 were measured. TheV magnitude, the coloursB - V, U - B and the respective identification charts are given. This allowed to construct the luminosity function of OB110+OB112. The group has an integrated magnitudeM _VT=–11.8 which is by 0 ^m .5 fainter than OB78 (M31). The mean absorption and the foreground were examined as well.  相似文献   

Beiträge zur Kenntnis der Lagerstätten dichten Magnesits. I. Mitteilung. Der Tremolitdunit Yom Galgenberg bei Zobten     

Professor  Dr. Kurt Spangenberg  Z. Heidenheim 《Contributions to Mineralogy and Petrology》1949,1(5-6):529-535

Ohne ZusammenfassungAbgeschlossen iiim Juni 1947.  相似文献   

III. Mitteilung. Die hydrothermale Zersetzung des Peridotits bei der Bildung der Magnesitlagerstätte am Galgenberg bei Zobten     

Professor  Dr. Kurt Spangenberg  Dr. Martha Müller  Z. Heidenheim 《Contributions to Mineralogy and Petrology》1949,1(5-6):547-559

Ohne ZusammenfassungAbgeschlossen im Juni 1947.  相似文献   

西沙群岛管枝藻目的分类研究     

张峻甫  夏恩湛  夏邦美 《海洋科学集刊》1975,(10):20-60

根据Feldmann(1938)的评述，管枝藻目的系统分类研究工作始于Schmitz(1879)，他首先创建了“group” Siphonocladaceae(发表名为Siphonocladiaceae)。又据Egerod(1952)的研究，Schmitz的“group”事实上只是一个科，Feldmann(1938)，Fritsch(1947)及其他人把管枝藻目的创建者归诸Schmitz是错误的。Schmitz在此科中收容了法囊藻(Valonia)，肋叶藻(Anadyomene)，小网藻(Microdictyon)，刚毛藻(Cladophora)，硬毛藻(Chaetomorpha)，黑孢藻(Pithophora)，气球藻(Botrydium)和暂定的网叶藻(Struvea)以及他的新属管枝藻(Siphonocladus)。De Toni(1889)将Schmitz的管枝藻科的各属分散在Order Confervoideae的刚毛藻科的刚毛藻亚科(Cladophoreae)、绵枝藻亚科(Spongocladieae)、小网藻亚科(Microdictyeae)、肋叶藻亚科(Anadyomene)和法囊藻亚科(Valonieae)中。Blackman and Tansley(1902)简历管藻目时下分管藻亚目(Siphoneae)包括无分隔的种类和管枝藻亚目(Siphonocladeae)包括分隔的种类；后者由孢根藻科(Gomontiaceae)，刚毛藻科(Cladophoraceae)，环藻科(Sphaeropleaceae)和法囊藻科(Valoniaceae)等四个科组成。  相似文献   

Genomic cloning and expression of vitellogenin gene from the self-fertilizing fish Rivulus marmoratus (Cyprinodontiformes, Rivulidae)     

Kim IC  Chang SY  Williams TD  Ja Kim Y  Yoon YD  Lee YS  Park EH  Lee JS 《Marine environmental research》2004,58(2-5):687-691

We cloned the vitellogenin gene from the self-fertilizing fish Rivulus marmoratus, and sequenced 12,326 bp. The number of exons of R. marmoratus and rainbow trout vitellogenin genes were different, and also the splicing junctions are different throughout most of the exons and introns but the amino acid similarity of R. marmoratus vitellogenin gene to other species was rather high. In promoter region of R. marmoratus vitellogenin gene, there were several E2 binding sites and the estrogen response element (ERE). We discuss here the gene structure and expression of R. marmoratus vitellogenin gene.  相似文献   

Use of submerged aquatic vegetation as habitat by young-of-the-year epibenthic fishes in shallow Maine nearshore waters     

M.A. Lazzari  B.Z. Stone 《Estuarine, Coastal and Shelf Science》2006,69(3-4):591

Epibenthic fishes were collected with daytime beam trawl tows (n = 1713) in three shallow (<10 m) habitats of submerged aquatic vegetation (SAV), Zostera marina (eelgrass), Laminaria longicruris (kelp), Phyllophora sp. (algae), and unvegetated sandy/mud areas. We divided the Maine coast into three broad zones based upon geological features and sampled over five consecutive years; during April–November 2000 in the mid coast, in 2001 and 2002 along the south coast and in 2003 and 2004 along the eastern Maine coast. We quantified habitat use by eight economically important fish species (Gadus morhua, Microgadus tomcod, Pollachius virens, Urophycis chuss, Urophycis tenuis, Osmerus mordax, Tautogolabrus adspersus, and Pseudopleuronectes americanus) and 10 other common epibenthic species (n = 18 571). We identified the physical and biological variables most important in discriminating between habitats with and without individual fish species. Logistic regression models based on nearshore habitat characteristics were developed to predict the distribution of these species along the three zones representing broad geological regions of the Maine coast. Logistic regression models correctly classified individual fish species 58.7–97.1% of the time based on the temporal and physical habitat variables (month, temperature, salinity, and depth) and the presence–absence of submerged aquatic vegetation (Zostera, Laminaria, or Phyllophora). Overall fish presence and economically important fish presence were correctly classified 61.1–79.8% and 66.0–73.6% of the time, respectively. The Maine shallow water fish community was composed primarily of young-of-the-year and juvenile fishes with all habitats functioning as facultative nursery areas. Presence of most fish species was positively associated with Zostera, Laminaria, and to a lesser extent, Phyllophora. This study provides direct evidence of shallow waters of the Gulf of Maine as critical facultative nursery habitat for juvenile G. morhua, M. tomcod, P. virens, U. tenuis, U. chuss, T. adspersus, O. mordax and P. americanus, and many ecologically important species.  相似文献