The relationship between short and long duration observations is difficult to directly evaluate from comparative statistical techniques. h) of the same event were observed at 16 rainfall stations in the Kaoping River watershed, Southern Taiwan. h) and annual maximum rainfall depths for 1-h duration (AM1. The annual maximum rainfall depths for 24-h duration (AM24. This study built a dynamic time series model for long duration extreme rainfalls to investigate common trends in annual maximum precipitation. Typhoons or heavy rainfall events account for a significant portion of annual extreme rainfall in southern Taiwan. The results not only demonstrate the distinct effect of Typhoon Morakot on frequency analysis, but also could provide reference in future planning of hydrological engineering. Furthermore, spatial analysis shows that extreme rainfall for a return period of 200-yr is highly dependent on topography and is smaller in the southwest than that in the east. Results show that the rainfall amount is significantly different with long duration with and without the event for frequency analysis. Spatial rainfall patterns for a return period of 200-yr with 24-hr duration with and without Typhoon Morakot are estimated. First, extreme rainfall data are collected at sixteen stations for durations of 1, 3, 6, 12, and 24 hours and then an appropriate probability distribution was selected to analyze the impact of the extreme hydrological event. The study integrates frequency analysis and spatial analysis to assess the effect of Typhoon Morakot event on rainfall frequency in the Gaoping River basin of southern Taiwan. The frequency curve, which was fitted mathematically to historical observed data, can be used to estimate the probability of exceedance for runoff events of a certain magnitude. From the point view of hydrological statistics, the impact of the precipitation from typhoon Morakot using a frequency analysis can be analyzed and discussed. Typhoon Morakot lashed Taiwan and produced copious amounts of precipitation in 2009. Because of climate change, this issue is worthy of attention in hydrologic designs. The designed 20- and 100-year storm will decrease abruptly when the observed data are subsequently updated until 2004. Furthermore, this study assesses the changes of hydrologic design while precipitation data are updated annually. The long-duration precipitation depth demonstrates a significant positive trend following the change point. The average 24-h-duration precipitation depth in the study area increased by 27 and 36% for 20-year and 100-year extreme events compared with and without data after 2004, respectively. The result reveals a clear change point of the annual maximum rainfall for 24-h durations in 2004 at most observations. This study analyzed a long-term annual dataset measuring maximum precipitation in south Taiwan, and identified the change point of the time series using the cumulative sum technique. 1 SSE Wichita Eisenhower National Airport – 3.An increase in the global temperature has intensified the hydrologic cycle, which affects the temporal patterns of precipitation.Here are the rainfall totals received by the KSN Storm Track 3 Weather Center. Numerous cars were caught in flooding in Wichita which caused them to stall out. The rain produced flash flooding in Butler, Kingman and Sedgwick County. Many areas reported over three inches as thunderstorms tracked over the same area for several hours. (KSNW) – Several inches of rain fell in south-central Kansas on Tuesday night.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |