MARC 主機 00000nam  2200385   4500 
001    AAI3427201 
005    20110603090800.5 
008    110603s2010    ||||||||||||||||| ||eng d 
020    9781124307718 
035    (UMI)AAI3427201 
040    UMI|cUMI 
100 1  Paudel, Murari 
245 13 An examination of distributed hydrologic modeling methods 
       as compared with traditional lumped parameter approaches 
300    174 p 
500    Source: Dissertation Abstracts International, Volume: 71-
       12, Section: B, page:  
500    Adviser: E James Nelson 
502    Thesis (Ph.D.)--Brigham Young University, 2010 
520    Empirically based lumped hydrologic models have an 
       extensive track record of use where as physically based, 
       multi-dimensional distributed models are evolving for 
       various engineering applications. Despite the availability
       of high resolution data, better computational resources 
       and robust numerical methods, the usage of distributed 
       models is still limited. The purpose of this research is 
       to establish the credibility and usability of distributed 
       hydrologic modeling tools of the United States Army Corps 
       of Engineers (USACE) in order to promote the extended use 
       of distributed models. Two of the USACE models were used 
       as the modeling tools for the study, with Gridded Surface 
       and Subsurface Hydrologic Analysis (GSSHA) representing a 
       distributed and with Hydrologic Engineering Center-
       Hydrologic Modeling System (HEC-HMS) representing a lumped
       model. Watershed Modeling System (WMS) was used as the pre
       - and post-processing tool. The credibility of distributed
       models has been established by validating that the 
       distributed models are efficient in solving complex 
       hydrologic problems. The distributed and lumped models in 
       HEC-HMS were compared. Similarly, the capabilities of 
       GSSHA and lumped models in HEC-HMS in simulating land use 
       change scenario were compared. The results of these 
       studies were published in peer-reviewed journals. 
       Similarly, the usability of the distributed models was 
       studied taking GSSHA-WMS modeling as a test case. Some of 
       the major issues in GSSHA-modeling using WMSinterface were
       investigated and solutions were proposed to solve such 
       issues. Personal experience with GSSHA and feedback from 
       the students in a graduate class (CE531) and from 
       participants in the USACE GSSHA training course were used 
       to identify such roadblocks. The project being partly 
       funded by the USACE Engineering Research and Development 
       Center (ERDC) and partly by Aquaveo LLC, the research was 
       motivated in improving GSSHA modeling using the WMS 
520    Keywords: hydrologic modeling, distributed models, lumped 
       models, GSSHA, HEC-HMS, land use change modeling 
590    School code: 0022 
650  4 Hydrology 
650  4 Engineering, Civil 
690    0388 
690    0543 
710 2  Brigham Young University.|bCivil Engineering 
773 0  |tDissertation Abstracts International|g71-12B 
856 40 |u