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- Title
- Streamflow prediction in ungauged basins located within data-scarce regions.
- Creator
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Alipour, Mohammadhossein, Kibler, Kelly, Wang, Dingbao, Mayo, Talea, Emrich, Christopher, University of Central Florida
- Abstract / Description
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Preservation and or restoration of riverine ecosystem requires quantification of alterations inflicted by water resources development projects. Long records of streamflow data are the first piece of information required in order to enable this analysis. Ungauged catchments located within data-scarce regions lack long records of streamflow data. In this dissertation, a multi-objective framework named Streamflow Prediction under Extreme Data-scarcity (SPED) is proposed for streamflow prediction...
Show morePreservation and or restoration of riverine ecosystem requires quantification of alterations inflicted by water resources development projects. Long records of streamflow data are the first piece of information required in order to enable this analysis. Ungauged catchments located within data-scarce regions lack long records of streamflow data. In this dissertation, a multi-objective framework named Streamflow Prediction under Extreme Data-scarcity (SPED) is proposed for streamflow prediction in ungauged catchments located within large-scale regions of minimal hydrometeorologic observation. Multi-objective nature of SPED allows for balancing runoff efficiency with selection of parameter values that resemble catchment physical characteristics. Uncertain and low-resolution information are incorporated in SPED as soft data along with sparse observations. SPED application in two catchments in southwestern China indicates high runoff efficiency for predictions and good estimation of soil moisture capacity in the catchments. SPED is then slightly modified and tested more comprehensively by application to six catchments with diverse hydroclimatic conditions. SPED performance proves satisfactory where traditional flow prediction approaches fail. SPED also proves comparable or even better than data-intensive approaches. Utility of SPED versus a simpler catchment similarity model for the study of flow regime alteration is pursued next by streamflow prediction in 32 rivers in southwestern China. The results indicate that diversion adversely alters the flow regime of the rivers while direction and pattern of change remain the same regardless of the flow prediction method of choice. However, the results based on SPED consistently indicate more substantial alterations to the flow regime of the rivers after diversion. Finally, the value added by a limited number of streamflow observations to improvement of predictions in an ungauged catchment located within a data-scarce region is studied. The large number of test scenarios indicate that there may be very few near-universal schemes to improve flow predictions in such catchments.
Show less - Date Issued
- 2019
- Identifier
- CFE0007426, ucf:52713
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007426
- Title
- The Use of Crisis Communication Strategies to Build Community Resilience: Evidence from Emergency Managers.
- Creator
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Haupt, Brittany, Kapucu, Naim, Knox, Claire, Emrich, Christopher, Sellnow, Timothy, University of Central Florida
- Abstract / Description
-
As public administration evolved to encompass a strong focus on supporting safe growth and development for communities, the role and responsibilities of government became increasingly complex with aspects of emergency management becoming quintessential. The ability to assess resilience plays a strong role in understanding the capability of a community to face a range of threats. Additionally, issues with communication uncovered the need to understand how administrators collect, disseminate,...
Show moreAs public administration evolved to encompass a strong focus on supporting safe growth and development for communities, the role and responsibilities of government became increasingly complex with aspects of emergency management becoming quintessential. The ability to assess resilience plays a strong role in understanding the capability of a community to face a range of threats. Additionally, issues with communication uncovered the need to understand how administrators collect, disseminate, and adapt critical information through understanding crisis type and local community needs. This dissertation discusses the connection between public administration and emergency management, the evolution of crisis communication and strategies, resilience and its measurement, along with Situational Crisis Communication Theory. This study conducted an online-survey of county, and county-equivalent, emergency managers across the United States. Results of Structural Equation Modeling included statistically significant relationships between Crisis Type and Local Community Needs on Crisis Communication Strategies as well as between strategies onto Community Resilience. Comparative analysis with the Baseline Resilience Indicators for Communities showed stark contrast in perceived resilience capacity. Follow-up, semi-structured interviews were conducted with voluntary respondents and analyzed via axial, deductive coding. Comparing quantitative and qualitative analysis highlighted the importance of county characteristics, critical relationships, overcoming obstacles, need for learning and adaptation, and importance of communication.
Show less - Date Issued
- 2018
- Identifier
- CFE0007013, ucf:52046
- Format
- Document (PDF)
- PURL
- http://purl.flvc.org/ucf/fd/CFE0007013