35 research outputs found
Masalah hubungan orang tua-anak dan cara mengatasinya/ Parkinson
x, 114 hal.: ill.; 20 cm
Mimicking Electromagnetic Wave Coupling in Tokamak Plasma with Fishnet Metamaterials
International audienc
Hilbert Fractal Inspired Dipoles for B1+ Field Control in Ultra-High Field MRI
International audienc
Bankfull discharge and recurrence intervals in Irish rivers
Different definitions of the bankfull condition in rivers are based on morphological characteristics, boundary conditions and geometrical properties. Consequently, the magnitude and associated return period of the bankfull discharge can be ambiguous. Knowledge of this discharge is important in index flood estimation and subsequent regional flood frequency analysis. This study investigates bankfull discharges and recurrence intervals at 88 locations in the Irish river network using a combination of surveyed bankfull levels, rating curves and equations and photographic records at the sites in question. Catchments ranged in area from approximately 23 km2 to 2778 km2. Recurrence intervals were determined by fitting generalised extreme value (GEV) distributions to the annual maximum flow series at the sites investigated. These intervals were found to be less than 2 years (the median annual flood) at 42 stations (48%) and less than 2·33 years (the mean annual flood assuming a GEV type 1 distribution) at 47 stations (53%). Higher return periods of between 2·33 and 10 years and 10 and 25 years were observed at a further 20% and 6% of locations respectively. Using multivariate regression analysis, the computed bankfull discharges are correlated with catchment descriptors and three expressions are presented for estimating bankfull flows.Deposited by bulk importPermission granted to archive the final PDF (the version used for publication that subscribers gain access to) but this not available yet. On the webpage that the file is hosted on, please reference the journal homepage (www.geotechnicaljournal.com) and including the text “Permission is granted by ICE Publishing to print one copy for personal use. Any other use of these PDF files is subject to reprint fees.”TS 01.03.1