Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 58 for “"Return period"”.
-
Modelling of future flood risk across Canada under climate change
… (1961-2005) and future (2061-2100) time-periods. Future changes in flood-hazard as a consequence of changes in flooding frequencies of historical 100-year and 250-year return period flood events, and changes in the month of occurrence of extreme flows are analyzed. Changes in flood risk …
-
THE HYDROLOGIC CONTROL ON SHALLOW LANDSLIDE TRIGGERING: EMPIRICAL AND MONTE CARLO PYSICALLY-BASED APPROACHES
… approach has been applied for estimation of return periods of shallow landslide triggering and for the evaluation of the most commonly-used types of empirical rainfall threshold. Use of the Monte Carlo approach for estimation of the return period of landsling, represents an advance to …
-
Flow estimation for stream restoration and wetland projects in ungaged watersheds using continuous simulation modeling
… two times baseflow and less than flows with a return period of ten years. The hydrologic calibration parameters were related to watershed characteristics through regression analysis, and these equations were used to calculate regional model parameters based on watershed characteristics for a …
-
From Fault Dynamics to Seismic Hazard Assessment
… fault‘s maximum magnitude earthquake and of its return period. Those parameters are indeed crucial to estimate seismic hazard. Seismicity can be viewed as a stochastic process which is constrained by the principle of moment conservation: seismic ruptures must in principle rupture fault portions …
-
Quality control and analysis of an updated wind gust data set in the United States
… explores limitations and implications for long return period wind speed estimation. In total, the data set contains more than 17.9 million peak wind gusts, including nearly double the station-years available compared to the data set used in the current ASCE/SEI 7-22 wind hazard maps. A rigorous …
-
Future value chains in the computer hardware industry
… investments in new supply chains have a long return period, which also influence the chances of future success of a company. However, developing such long-range views of the whole industry is a challenging task, because of inherent uncertainties of the future and rapid changes in the computer …
-
EFFECTIVENESS OF STRAW BALE CHECK DAMS AT REDUCING POST-FIRE SEDIMENT YIELDS FROM EPHEMERAL CHANNEL CATCHMENTS
… or less than 14 mm hr-1 (0.5 in hr-1), a 1-year return period event at the study area. The straw bale check dams were filled to sediment holding capacity early in the first post-fire year from sediment yields produced by 1- and 2-year I30 return period rain events, or by two rain events having …
-
EFFECTIVENESS OF STRAW BALE CHECK DAMS AT REDUCING POST-FIRE SEDIMENT YIELDS FROM EPHEMERAL CHANNEL CATCHMENTS
… or less than 14 mm hr-1 (0.5 in hr-1), a 1-year return period event at the study area. The straw bale check dams were filled to sediment holding capacity early in the first post-fire year from sediment yields produced by 1- and 2-year I30 return period rain events, or by two rain events having …
-
Determinação de vazões extremas a partir de séries parciais ou máximos anuais
… POT) to estimate flood peaks with very high return periods. Initially, the mean daily flow records of 29 gauging stations of the Rio Doce basin are used as a tool to verify the major assumptions of the POT methods. After that, the elementary properties of the Partial Series are compared to …
-
Estudo das características estocásticas do roll paramétrico
… (GPD). Then, using the fitted GEVD, the return period and the time between events for roll motions have been computed for two wave conditions.
-
Simulation and Assessment of Long-Term Stormwater Basin Performance under Real-Time Control Retrofits
… at some of the facilities for storms with a return period of 2 years or less. For larger storms, RTC maintained or increased peak flow rates. During a 15-year simulation with historic precipitation data, total duration of erosive flows was reduced for most facility retrofit simulations; …
-
Effects of thermal loads on Texas steel bridges
… the relationship between thermal loads and return periods. The thermal loads with 100-year return period were compared to the ones suggested by AASHTO. The thermal loads with 100-year return period were used to investigate structural response. The effect of bearing orientation and the point …
-
Seismic hazard assessment in Central Asia
… and spectral acceleration (SA) at different periods (frequencies). The maximum hazard observed in the regional model reaches an intensity of around 8 in southern Tien Shan for a mean return period of 475 years. The maximum hazard estimated for some of the cities in the region, namely Bishkek, …
-
Exploring Overbank Sediment Deposition Variation in Heavily Modified Floodplains of the Lower Mississippi River: A Sedimentological and Geophysical Analysis
… risk, unanticipated changes to the major flood return period, individual flood severity and duration, and sediment regime have become increasingly apparent and sometimes problematic, such as the 2011 and 2018-2020 floods. Flood control levees along the LMR have reduced the natural floodplain …
-
Geographical Analysis of Offender Vulnerability: Modeling Coastal Hazards and Social Disorganization in Southern Mississippi
… physical vulnerability for the 100-year return period. The results show that disorganized neighborhoods are not at significant risk from coastal or inland flooding and are moderately at-risk from hurricane winds. Comparison of the SDI to area crime patterns reveal there is a slightly …
-
Applications of GIS in hydrologic modeling
… simulation. It was revealed that for a given return period the maximum peak flow for a design storm would increase with the duration of the storm and the Rational Method would not be suitable in estimating the maximum peak flow from a watershed with large storage capacity. The GIS technology …
-
Numerical simulation of the effects of sea level rise on estuarine processes
… is developed which allows one to calculate the return period for various combinations of streamflow and tidal height. The results from each run of the estuary model are reviewed to study the tidal hydraulics and the longitudinal and vertical distributions of the sediment and salinity with and …
-
Modeling the Effects of Sea-Level Rise on Flooding in the Lower Ozama River Basin, Santo Domingo, Dominican Republic
… and produced larger flood extents for higher return period events. The 2D model captured spatial and temporal flood dynamics across SLR scenarios of 0.30–1.00 m and in compound configurations combining SLR with 25-, 50-, and 100-year discharges. Compared with the bathtub model, which predicted …
-
An Analysis of Hydrological Model Uncertainty at the Local Stage of a Climate Change Impact Assessment in the Suir Catchment
… A robust finding is the notable agreement in new return period values in the 2080s with both models suggesting that the 10, 25 and 50 year flood events simulated in the control period will become 3.2, 5.4 and 9 year flood events. However, the magnitudes of the flood events differ for each model. …
Page 1 of 3