Methods of Using Long-Term Storage in Reservoirs.

Hurst, H. E.

doi:10.1680/iicep.1956.11503

Cited by 300 publications

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“…As a result, flood risk is shown to be substantially higher than that estimated by conventional methods, which assume serial independence of the peak flows. This supports the grouping found by Panu & Unny (1980) in some annual streamflow data and the long-term persistence in annual streamflows shown by Hurst (1951Hurst ( , 1956). …”

Section: The Group Approachsupporting

confidence: 88%

Group-based estimation of missing hydrological data: I. Approach and general methodology

Elshorbagy¹,

Panu²,

Simonović́

2000

Hydrological Sciences Journal

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In this first paper in a set of two, the problem of estimating missing segments in streamflow records is described. The group approach, different from the traditional single-valued approach, is proposed and explained. The approach perceives the hydrological data as sequence of groups rather than single-valued observations. The techniques suggested to handle the group approach are regression, time series analysis, partitioning modelling, and artificial neural networks. Pertinent literature is reviewed and background material is used to support the group approach. Implementation and comparisons of models' performance are deferred to the second paper.

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Section: The Group Approachsupporting

confidence: 88%

Group-based estimation of missing hydrological data: I. Approach and general methodology

Elshorbagy¹,

Panu²,

Simonović́

2000

Hydrological Sciences Journal

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“…It relates to the autocorrelations of the time series [55][56][57]. Computation of the Hurst K random shu ing of original sequence to generate 300 randomly shu ed sequences and the assessment of the significance of the Hurst K values [57].…”

Section: Methodsmentioning

confidence: 99%

Distal turbidite fan/lobe succession of the Late Oligocene Zuberec Fm. – architecture and hierarchy (Central Western Carpathians, Orava–Podhale basin)

Stárek

Fuksi

2017

Open Geosciences

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A part of the Upper Oligocene sand-rich turbidite systems of the Central Carpathian Basin is represented by the Zuberec Formation. Sand/mud-mixed deposits of this formation are well exposed in the northern part of the basin, allowing us to interpret the turbidite succession as terminal lobe deposits of a submarine fan. This interpretation is based on the discrimination of three facies associations that are comparable to different components of distributive lobe deposits in deep-water fan systems. They correspond to the lobe off-axis, lobe fringe and lobe distal fringe depositional subenvironments, respectively. The inferences about the depositional paleoenvironment based on sedimentological observations are verified by statistical analyses. The bed-thickness frequency distributions and vertical organization of the facies associations show cyclic trends at different hierarchical levels that enable us to reconstruct architectural elements of a turbidite fan. First, small-scale trends correspond with shift in the lobe element centroid between successive elements. Differences in the distribution and frequency of sandstone bed thicknesses as well as differences in the shape of bed-thickness frequency distributions between individual facies associations reflect a gradual fining and thinning in a down-dip direction. Second, meso-scale trends are identified within lobes and they generally correspond to the significant periodicity identified by the time series analysis of the bed thicknesses. The meso-scale trends demonstrate shifts in the position of the lobe centroid within the lobe system. Both types of trends have a character of a compensational stacking pattern and could be linked to autogenic pro-*Corresponding Author: Dušan Starek: Earth Science Institute SAS, Geological Division, Dúbravská cesta 9, 842 36 Bratislava; Email: dusan.starek@savba.sk Tomáš Fuksi: Earth Science Institute SAS, Geological Division, Dúbravská cesta 9, 842 36 Bratislava cesses. Third, a largescale trend documented by generally thickening-upward stacking pattern of beds, accompanied by a general increase of the sandstones/mudstones ratio and by a gradual change of percentage of individual facies, could be comparable to lobe-system scale. This trend probably indicates a gradual basinward progradation of lobe system controlled by allogenic processes related to tectonic activity of sources and sea-level fluctuations.

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“…, S&M) calculated the Hurst exponents [Hurst, 1956; Man-principal oscillation pattern analysis [Penland, 1985], and delbrot and Wallis, 1969a] of time series of cumulative bed nonlinear forecasting [Sugihara and May, 1990] has been level derived from 10.8 years of observations of cross-shore shown to be difficult. Therefore the conclusion (S&M) that depth profiles extending from the shoreline to approximately modeling approaches based on details of small-scale phys-8-m water depth near Duck, North Carolina [Lee and Birke-ical processes or on external forcing by waves and curmeier, 1993 ' Larson and Krauss, 1994].…”

Section: Southgate and Moller [2000] (Hereineafter Referred To As Expmentioning

confidence: 99%

Coastal profile evolution at Duck, North Carolina: A cautionary note

Elgar¹

2001

J. Geophys. Res.

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Abstract. The Hurst exponents of 10.8-year-long time series of cumulative bed level observed between the shoreline and -,-8-m water depth on an ocean beach are shown to be consistent with bed-level time series described by a sinusoid with a 10.8-year period plus white noise. Thus, for these observations, Hurst exponents cannot distinguish selforganized morphological evolution from the hypothesis that nearshore morphology on monthly to decadal timescales is a forced response to small-scale physical processes driven by waves and currents.

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Methods of Using Long-Term Storage in Reservoirs.

Cited by 300 publications

References 0 publications

Group-based estimation of missing hydrological data: I. Approach and general methodology

Group-based estimation of missing hydrological data: I. Approach and general methodology

Distal turbidite fan/lobe succession of the Late Oligocene Zuberec Fm. – architecture and hierarchy (Central Western Carpathians, Orava–Podhale basin)

Coastal profile evolution at Duck, North Carolina: A cautionary note

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