Hydrologic Mechanisms for 2022 Yellowstone River Flood and Comparisons to Recent Historic Floods

IF 3.2 3区 地球科学 Q1 Environmental Science
Jeremy Giovando, Wyatt Reis, Wei Zhang, Nancy A. Barth
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引用次数: 0

Abstract

In June 2022, a historic flood event occurred in the headwaters of the Yellowstone River Basin. The flood resulted in millions of dollars in damages and substantial interruptions to Yellowstone National Park. The 2022 flood event was substantially higher in magnitude than other high-peak flow events over the last 30 years. The high discharge was primarily due to the combination of hydrologic mechanisms initiated by rain-on-snow, including a high-elevation snowpack that peaked later than average. However, the contributions of each hydrologic driver, rain and snow, have not been quantified and could be important for understanding future flood events in the region. The contribution of snowmelt to the total terrestrial water input (TWI) varied throughout the area, yet was concentrated in the headwaters of the Yellowstone, Stillwater, and Boulder rivers, along with the headwaters of Rock Creek in Wyoming and Montana. The primary atmospheric contributions to the TWI during the 2022 event were precipitation from moisture transported from the Pacific Ocean that converged over the Greater Yellowstone Area (GYA) and snowmelt from residual snowpack in the northeast part of Yellowstone National Park.

Abstract Image

2022年黄石河洪水的水文机制及其与近期历史洪水的比较
2022年6月,黄石河流域的源头发生了历史性的洪水事件。洪水给黄石国家公园造成了数百万美元的损失和严重的中断。2022年的洪水事件的规模远远高于过去30年的其他高峰流量事件。高流量主要是由雨雪引发的水文机制共同作用造成的,包括高海拔积雪峰值晚于平均水平。然而,每种水文驱动因素(雨和雪)的贡献尚未被量化,可能对了解该地区未来的洪水事件很重要。融雪对总陆地水输入(TWI)的贡献在整个地区有所不同,但主要集中在黄石河、静水河和博尔德河的源头,以及怀俄明州和蒙大拿州的岩石溪的源头。2022年事件期间,大气对TWI的主要贡献是汇聚在大黄石地区(GYA)的太平洋输送的水汽降水和黄石国家公园东北部残余积雪的融雪。
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来源期刊
Hydrological Processes
Hydrological Processes 环境科学-水资源
CiteScore
6.00
自引率
12.50%
发文量
313
审稿时长
2-4 weeks
期刊介绍: Hydrological Processes is an international journal that publishes original scientific papers advancing understanding of the mechanisms underlying the movement and storage of water in the environment, and the interaction of water with geological, biogeochemical, atmospheric and ecological systems. Not all papers related to water resources are appropriate for submission to this journal; rather we seek papers that clearly articulate the role(s) of hydrological processes.
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