نتایج جستجو برای: dry valley floods

تعداد نتایج: 128600  

Journal: :Science 2016
Qinglong Wu Zhijun Zhao Li Liu Darryl E Granger Hui Wang David J Cohen Xiaohong Wu Maolin Ye Ofer Bar-Yosef Bin Lu Jin Zhang Peizhen Zhang Daoyang Yuan Wuyun Qi Linhai Cai Shibiao Bai

China's historiographical traditions tell of the successful control of a Great Flood leading to the establishment of the Xia dynasty and the beginning of civilization. However, the historicity of the flood and Xia remain controversial. Here, we reconstruct an earthquake-induced landslide dam outburst flood on the Yellow River about 1920 BCE that ranks as one of the largest freshwater floods of ...

Journal: :Journal of the American Mosquito Control Association 1991
T M Logan K J Linthicum P C Thande J N Wagateh G O Nelson C R Roberts

Floodwater Aedes breeding habitats in central Kenya were sequentially flooded to determine the numbers of mosquito eggs hatching during each flooding. Approximately 90% of the larvae sampled during 4 floodings emerged during the initial flooding. The number of Aedes eggs hatching during the second flooding was lowest of all 4 floodings, and no significant differences in the amount of egg hatchi...

2013
Robert D. Sumaye Eveline Geubbels Edgar Mbeyela Dirk Berkvens

BACKGROUND In recent years, evidence of Rift Valley fever (RVF) transmission during inter-epidemic periods in parts of Africa has increasingly been reported. The inter-epidemic transmissions generally pass undetected where there is no surveillance in the livestock or human populations. We studied the presence of and the determinants for inter-epidemic RVF transmission in an area experiencing an...

2015
Danielle Cupp

This paper presents India’s economic growth by comparing it to that of the United States. In addition, this paper analyzes current events in India under a macroeconomic lens as it provides the macroeconomic impacts of said events. More specifically, this paper focuses on the ways in which unexpected severe flooding have impacted Northern India in the short-, medium-, and long-run. Analyses conc...

2012
PETER C. PATTON

Harris Wash, a tributary of the Escalante River in south-central Utah, has two wellpreserved alluvial terraces of compound origin in its lower reaches. The alluvial stratigraphy of the deposits that compose these terraces reflects the complex processes of canyon filling and erosion. The compound terraces were formed by general aggradation of the valley, by deposition from large floods that also...

Journal: :Ecology 2009
José I Querejeta Louise M Egerton-Warburton Michael F Allen

California coast live oak (Quercus agrifolia) forms tripartite symbiotic associations with arbuscular (AMF) and ectomycorrhizal (EMF) fungi. We selected oak individuals differing in topographic position and depth to groundwater (mesic valley vs. xeric hill sites) to investigate changes of tree mycorrhizal status in response to interannual rainfall variability. EMF root colonization, as well as ...

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