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Wednesday, May 6, 2020 | History

2 edition of Trends in flood and low flow hydrological time series found in the catalog.

Trends in flood and low flow hydrological time series

Cecilia Svensson

Trends in flood and low flow hydrological time series

report

by Cecilia Svensson

  • 249 Want to read
  • 3 Currently reading

Published by World Meteorological Organization in [Geneva, Switzerland?] .
Written in English

    Subjects:
  • Floods.,
  • Droughts.,
  • Climatic changes -- Environmental aspects.,
  • Reservoirs -- Environmental aspects.

  • Edition Notes

    StatementCecilia Svensson, Zbigniew W. Kundzewicz and Thomas Maurer.
    SeriesWMO/TD -- no. 1241., WCASP -- 66., WCASP (Series) -- 66.
    ContributionsKundzewicz, Zbigniew., Maurer, Thomas., Unesco., World Meteorological Organization.
    The Physical Object
    Pagination1 v. (various pagings) :
    ID Numbers
    Open LibraryOL16129890M

    The book offers a comparative overview of the major challenges faced when dealing with flood hazards. The research presented is intended to promote a deeper understanding of how climate change and land use change processes have evolved from past to present, and how they affect the flow regime of the Ubaye River based on sound and reproducible. time-series data, and maintains networks for regular collection of historical and operational hydro-meteorological, and water quality data. These water statistics are used for: Flood forecasting River monitoring Environmental assessments Comprehensive studies for development of the Basin Development Plan on water utilisation.

    Annual maxima and flood frequency. To investigate the changes in flood frequency and timing through the period, annual maxima (AM) are extracted from the modelled flow time series (for water years, 1 October–30 September, rather than calendar years). Developing time series of flow at a suitable timestep using rainfall runoff models or mass balance methods to inform water resources, water quality and catchment flow studies. Validation and verification of flow estimates using hydrometric and catchment information to give confidence that you are using the best information for your investigation.

    Flood inundation models enable us to make hazard predictions for floodplains, mitigating increasing flood fatalities and losses. This book provides an understanding of hydraulic modelling and floodplain dynamics, with a key focus on state-of-the-art remote sensing data, and methods to estimate and communicate uncertainty. The USGS works in partnership with more than 1, Federal, regional, State, Tribal, and local agencies or organizations to maintain and manage a multipurpose network of streamgages that monitor streamflow and (or) water level. Approximately 8, of the more t USGS streamgages in the network continuously monitor streamflow year-round and are collectively referred to.


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Trends in flood and low flow hydrological time series by Cecilia Svensson Download PDF EPUB FB2

Time Series Analysis of Hydrologic Data for Water Resources Planning and Management: A Review Article (PDF Available) in Journal of Hydrology and Hydromechanics 54(3). Trend analysis works better for longer temporal data records and the two years data length won't capture the trend of low and high flow extremes.

if one of your record is impacted by some quite. Analysis of Trends in Low-Flow Time Series of Canadian Rivers. Deepesh Machiwal, Madan Kumar Jha and current status of time series analysis in hydrological Trends in flood and low flow hydrological time series book. In adition, it demonstrates the application of most time series tests through a case study as well as presents a comparative performance evaluation of various time series tests.

The issue, which often arises in low-flow frequency analysis, is that the observed streamflow time series (and, consequently, low-flow time series) often contain zero flow values. In arid climates streamflow may naturally frequently fall to zero. Similar situation arises in cold regions, where the streams may be completely frozen in by: Analysis of Trends in Low-Flow Time Series of Canadian Rivers.

Authors; Authors and affiliations much of the earlier studies on temporal trends in time series of hydrological variables were focussed on water quality related parameters. Vogel, R.M. and Knoll, C.N.

Trends in flood and low flows in the United States: Impact of Cited by: 1. Extreme Hydrology and Climate Variability: Monitoring, Modelling, Adaptation and Mitigation is a compilation of contributions by experts from around the world who discuss extreme hydrology topics, from monitoring, to modeling and management.

With extreme climatic and hydrologic events becoming so frequent, this book is a critical source, adding. " I believe Hilbert-Huang Transform Analysis of Hydrological and Environmental Time Series will satisfy researchers in any discipline who analyze nonstationary and/or nonlinear time series.

The book does not claim to be a final word on the merits of the HHT, but it does extend empirical claims regarding the potential effectiveness of the HHT.

Anthropogenic climate change is expected to intensify the hydrological cycle (Huntington, ), leading to modified river flow regimes in many parts of the s in the water or energy balance could alter the magnitude, timing and seasonal distribution of river flows, while more intense rainfall could lead to increased flood severity.

Additionally, any changes in a river channel's capacity (i.e., the depth, width, and roughness) may significantly alter the frequency of local flooding above set flood levels (even in the absence of any changes in discharge) [Slater et al., ], so trends in flood frequency that are measured using discharge and gage height time series can be.

Hydrological Forecasting with Radar and the Probability Distributed Hydrological Model (PDM) Assessment of flood simulation with PDM for Hydrological event 2; 27th Mayfrom to hrs) A superimposed graphs of Rainfall and flows for the PDM calibration time series ( to ) (38).

In order to analyse the homogeneity, trends, and stationarity in rainfall time series for nine rainfall stations over the period –, we have used several statistical tests.

The results showed an increasing trend for annual rainfall after the break detected in for Djbel Chouachi, Ouled Mimoun, Sidi Benkhala stations using Hubert.

We focus on the effect of impervious cover on annual flood magnitude, defined as the largest streamflow in a given year.

Annual flood magnitudes are one of the most common metrics of flooding and are used in flood frequency analysis (Hodgkins et al., ; R. Merz & Blöschl, ; Vogel et al., ).

Impervious cover has been reported to have. Khaliq, M., T. Ouarda, P. Gachon, L. Sushama and A. St-Hilaire, Identification of hydrological trends in the presence of serial and cross correlations: A review of selected methods and their application to annual flow regimes of Canadian rivers, Journal of Hydrology, (), Summer low flow is calculated as the minimum day average water flow measured each year at river and stream gauging stations.

We studied data collected since to determine whether the long-term trends of annual summer low flow levels are declining or increasing in unregulated lated rivers are those without major dams or man-made reservoirs and are most sensitive to climate. The Hilbert-Huang Transform (HHT) is a recently developed technique used to analyze nonstationary data.

This book uses methods based on the Hilbert-Huang Transform to analyze hydrological and environmental time series. These results are compared to the results from the traditional methods such. For example, the operation of a reservoir for flow regulation on river Kraszna increased the low flow from m 3 / up to m 3 /s (Konecsny & Sorochovski, ).

Explanation of any detected trends in low flow time series requires a correct separation of those into climate induced and other affects.

The frequency and severity of global drought-induced impacts have led to raising awareness of the need for improved river management. Although academic publications on drought have proliferated, a systematic review of literature has not yet been conducted to identify trends, themes, key topics, and authorships.

This study aims to evaluate the scientific evidence for the hydrological drought. Hydrological modelling 1. Hydrological modelling • A hydrologic model is a simplification of a real-world system (e.g., surface water, soil water, wetland, groundwater, estuary) that aids in understanding, predicting, and managing water resources.

Both the flow and quality of water are commonly studied using hydrologic models. The comprehensive literature review performed by Smakhtin () is a benchmark study on low flow hydrology in which low flow was discussed in all aspects. For characterizing and evaluating low flows, flow duration curves, recession analysis, low flow indices and frequency analysis have frequently been used (Bayazit & Onoz ).Frequency analysis has focused on fitting a theoretical.

Example of a system in the Yangtze River basin, China.- 7. Example of a system installed in and specifications for the data acquisition sub-system for the Niger River basin.- 8. Jhelum District Flood Order, Pakistan, 9. Weekly hydrological bulletin (Poland).- Low flow hydrological forecasts (River Niger).- Glossary of terms.

William H. Armstrong, Mathias J. Collins and Noah P. Snyder, Hydroclimatic flood trends in the northeastern United States and linkages with large-scale atmospheric circulation patterns, Hydrological Sciences Journal, /, 59, 9, (), ().Water resource management and catchment analysis are crucial aspects of the twenty-first century in hydrological and environmental sciences.

Linked directly with studies and research about climate change effects in global resources (e.g., diminution of rainfall dynamic), as well as continuously growing extreme natural phenomena with catastrophic results (e.g., floods and erosion), hydrological.) studied the trends in floods and low flows in the United States using a regional average Kendall’s.

S. trend test at two spatial scales and over two time frames. They found no evidence of trends in flood flows but they did find evidence of upward trends in low flows at larger scale in the Midwest and at a.