نتایج جستجو برای: chehel chai watershed
تعداد نتایج: 17019 فیلتر نتایج به سال:
This paper is an overview of this special issue devoted to watershed research in Acadia National Park (Acadia NP). The papers address components of an integrated research program on two upland watersheds at Acadia NP, USA (44 degrees 20' N latitude; 68 degrees 15' E longitude). These watersheds were instrumented in 1998 to provide a long-term foundation for regional ecological and watershed res...
The shrinking Baiyangdian Lake and drying up rivers are widely observed in recent years. Due to the significant advantages in integrated analyses of natural and economic systems, emergy analysis is introduced in this paper to assess the health status of Baiyangdian Watershed. First, we establish a emergy based conceptual framework for the assessment, delineate an emergy flow diagram of Baiyangd...
In fall (November 2005) and winter (February 2006), we collected current-year foliage of native red spruce (Picea rubens Sarg.) growing in a reference watershed and in a watershed treated in 1999 with wollastonite (CaSiO(3), a slow-release calcium source) to simulate preindustrial soil calcium concentrations (Ca-addition watershed) at the Hubbard Brook Experimental Forest (Thornton, NH). We ana...
4 Watershed modeling requires accurate estimates of precipitation, however in some cases 5 it is necessary to simulate streamflow in a watershed for which there is no precipitation gauge 6 records within close proximity to the watershed. For such cases, we propose an approach for 7 estimating watershed-scale precipitation by combining (or fusing) gauge-based precipitation 8 time series with rad...
The distribution and movement of arsenic was investigated on the Aberjona watershed in eastern Massachusetts for the purpose of identifying where and by what processes present and past human exposures to this element could have occurred. It was found that although most of the arsenic was originally released in the headwaters of the watershed, extensive migration had occurred, and the potential ...
this study presents data on age structure, sex ratio, growth, length-weight relationships and condition factor of four populations (n=312) of two alburnoides species, collected in 2005 and 2006 from the tajan river (caspian sea basin), the ghara-chai and jajrud rivers (namak lake basin), and cheshmeh-ali spring (kavir basin) of iran. sex ratio of the fish, in the studied localities, except in ...
Micromechanical Interactions in a Superduplex Stainless Steel Subjected to Low Cycle Fatigue Loading
The definitive version is available at www.blackwell-synergy.com: R. Lin Peng, G. Chai, N. Jia, Y. D. Wang and S. Johansson, Micromechanical Interactions in a Superduplex Stainless Steel Subjected to Low Cycle Fatigue Loading, 2008, Fatigue and Fracture of Engineering Materials and Structures, (31), 10, 892-901. http://dx.doi.org/10.1111/j.1460-2695.2008.01277.x. Copyright: Blackwell Publishing...
Yafei Ning 1,2,*, Yunbin Yuan 1, Zhen Huang 3, Yanju Chai 1 and Bingfeng Tan 1,2 1 State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China; [email protected] (Y.Y.); [email protected] (Y.C.); [email protected] (B.T.) 2 University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China ...
[1] Watershed-scale water quality models involve substantial uncertainty in model output because of sparse water quality observations and other sources of uncertainty. Assessing the uncertainty is very important for those who use the models to support management decision making. Systematic uncertainty analysis for these models has rarely been done and remains a major challenge. This study aimed...
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