flood-frequency analysis

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• Cumulative frequency analysis — is the applcation of estimation theory to exceedance probability (or equivalently to its complement). The complement, the non exceedance probability concerns the frequency of occurrence of values of a phenomenon staying below a reference value.… …   Wikipedia

• 100-year flood — For other uses, see 100 year flood (disambiguation). A one hundred year flood is calculated to be the level of flood water expected to be equaled or exceeded every 100 years on average. The 100 year flood is more accurately referred to as the 1%… …   Wikipedia

• Coastal flood — Coastal flooding occurs when normally dry, low lying land is flooded by sea water.[1] The extent of coastal flooding is a function of the elevation inland flood waters penetrate which is controlled by the topography of the coastal land exposed to …   Wikipedia

• Intelligence analysis — This article deals with the intellectual process of analysis itself, as opposed to intelligence analysis management, which, in turn, is a subcomponent of intelligence cycle management. For a complete hierarchical list of articles in this series,… …   Wikipedia

• river — river1 riverless, adj. riverlike, adj. /riv euhr/, n. 1. a natural stream of water of fairly large size flowing in a definite course or channel or series of diverging and converging channels. 2. a similar stream of something other than water: a… …   Universalium

• hydrologic sciences — Introduction       the fields of study concerned with the waters of the Earth. Included are the sciences of hydrology, oceanography, limnology, and glaciology.       In its widest sense hydrology encompasses the study of the occurrence, the… …   Universalium

• Log-logistic distribution — Probability distribution name =Log logistic type =density pdf cdf parameters =alpha>0 scale eta> 0 shape support =xin [0,infty) pdf = frac{ (eta/alpha)(x/alpha)^{eta 1} } { left [ 1+(x/alpha)^{eta} ight] ^2 } cdf ={ 1 over 1+(x/alpha)^{ eta} …   Wikipedia

• CumFreq — Example of output graph CumFreq Developer(s) Institute for Land Reclamation and Improvement (ILRI) …   Wikipedia

• Análisis de frecuencia acumulada — La frecuencia acumulada o frecuencia acumulativa es la frecuencia de ocurrencia de valores de un fenómeno menores que un valor de referencia. El fenómeno puede ser un variable aleatoria que varia en el tiempo o en el espacio. La frecuencia… …   Wikipedia Español

• Pearson distribution — The Pearson distribution is a family of continuous probability distributions. It was first published by Karl Pearson in 1895 and subsequently extended by him in 1901 and 1916 in a series of articles on biostatistics. History The Pearson system… …   Wikipedia

• Timothy A. Cohn — (1957 ) is a hydrologist with the US Geological Survey, USGS Science Advisor for Hazards (1998 2001), and lecturer at Johns Hopkins University (2006 ). Cohn served in the office of Senator Bill Bradley (D NJ) in 1995 97 as a AAAS Congressional… …   Wikipedia