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has been cited by the following article:

• TITLE: Developing Intensity-Duration-Frequency Curves in Scarce Data Region: An Approach using Regional Analysis and Satellite Data

  AUTHORS: Ayman G. Awadallah, Mohamed ElGamal, Ashraf ElMostafa, Hesham ElBadry

  KEYWORDS: Rainfall Frequency Analysis, Regional Analysis, Intensity Duration Frequency, TRMM, Angola

  JOURNAL NAME: Engineering, Vol.3 No.3, March 7, 2011

  ABSTRACT: The availability of data is an important aspect in frequency analysis. This paper explores the joint use of lim- ited data from ground rainfall stations and TRMM data to develop Intensity Duration Frequency (IDF) curves, where very limited ground station rainfall records are available. Homogeneity of the means and variances are first checked for both types of data. The study zone is assumed to be belonging to the same region and checked using the Wiltshire test. An Index Flood procedure is adopted to generate the theoretical regional distribution equation. Rainfall depths at various return periods are calculated for all stations and plotted spatially. Regional patterns are identified and discussed. TRMM data are used to develop ratios between 24-hr rainfall depth and shorter duration depths. The regional patterns along with the developed ratios are used to develop regional IDF curves. The methodology is applied on a region in the North-West of Angola.