Duration-Over-Threshold Gage Model Fit

companion dataset to \"A DURATION-OVER-THRESHOLD MODEL FOR FLOOD FREQUENCY AND FLOW REGIME CHARACTERIZATION\" We investigated event-specific discharge-duration dynamics at 33 USGS stream gages within the US state of Vermont. Building on the method of Feng et al. 2017, flood events from 15-minute discharge timeseries were extracted using an automated threshold method, and a statistical model was fit at each gage for both frequency of discharge exceedance and conditional duration of discharge exceedance. This Duration-Over-Threshold model can estimate the arrival rate of a flowrate threshold, q, being exceeded for a given duration, d. GitHub repository: https://github.com/sclaw/duration-over-threshold本数据集为《用于洪水频率与径流过程表征的超阈值历时（Duration-Over-Threshold）模型》一文的配套数据集。本研究针对美国佛蒙特州境内的33个美国地质调查局（USGS）水文测站，开展了单次事件维度下的流量-历时动态特征分析。本研究基于Feng等（2017）提出的方法框架，通过自动化阈值法从15分钟分辨率的流量时间序列中提取洪水事件，并为每一处测站分别构建统计模型，同步拟合流量超阈值发生频率与超阈值条件历时。该超阈值历时模型可针对指定历时d，估算流量阈值q被突破的到达率。GitHub仓库地址：https://github.com/sclaw/duration-over-threshold