00605573

Component

http://onlinepubs.trb.org...trr/1990/1279/1279-013.pdf

https://scholar.google.co...rora&publication_year=1990

Three moment-based estimation procedures for log Pearson Type 3 (LP3) parameters were compared using observed stream data samples from Louisiana and its neighboring states. The methods of direct moments, log-transformed moments, and mixed moments were compared in descriptive capabilities on the basis of computed root mean square deviation (RMSD) and mean absolute deviation (MAD) of the standardized variate. Using the performance indices, the most robust estimation method was sought. In many cases, depending on sample skewness, significant differences existed between the descriptive capabilities of these methods. However, no method performed in a clearly superior manner across the entire range of data. These results can be used in conjunction with previous Monte Carlo studies focusing on the predictive ability of these procedures to determine the most reliable moment-based estimation procedures.

This paper appears in Transportation Research Record No. 1279, Hydrology and Environmental Design 1990. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411034

p. 103-112

1990

Transportation Research Record

0309050650

References (18) ; Tables (4)

Alternatives analysis; Estimating; Floods; Hydrologic phenomena; Methodology

Comparative analysis; Flood frequency

Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw

TRIS, TRB

Mar 31 1991 12:00AM

• APRIL 1989 HATCHIE RIVER US-51 BRIDGE FAILURE
• COMPUTERIZED DATA BASE MANAGEMENT AND ANALYSIS SYSTEM FOR FIELD-COLLECTED SCOUR DATA
• DEVELOPMENT OF PLANNED MANAGEMENT ROADSIDE DESIGN FOR URBAN HIGHWAYS IN ILLINOIS
• FLASH FLOOD: HIGHWAY-RELATED LESSONS AND RECOMMENDATIONS
• HIGHWAY WATER QUALITY CONTROL--SUMMARY OF 15 YEARS OF RESEARCH
• IDENTIFICATION, PRESERVATION, AND MANAGEMENT OF MINNESOTA ROADSIDE PRAIRIE COMMUNITIES
• NESTING BALD EAGLES (HALIAEETUS LEUCOCEPHALUS) IN URBAN AREAS OF SOUTHEAST ALASKA: ASSESSING HIGHWAY CONSTRUCTION AND DISTURBANCE IMPACTS
• PENNSYLVANIA STATE UNIVERSITY--PENNDOT ROADSIDE RESEARCH PROJECT: WILDFLOWER EVALUATION
• PENNSYLVANIA STATE URBAN HYDROLOGY MODEL AS A TOOL FOR HIGHWAY DRAINAGE DESIGN
• REDUCTION OF SALT BUILDUP AND TWIG INJURY IN ROADSIDE PEACH TREES WITH FILM-FORMING SPRAYS
• SHORELINE STABILIZATION TO PROTECT LOUISIANA HIGHWAY 82
• WILDLIFE CROSSINGS OF FLORIDA I-75