論文

査読有り 筆頭著者
2021年2月17日

Flood events caused by discharge from Qaanaaq Glacier, northwestern Greenland

Journal of Glaciology
  • Ken Kondo
  • ,
  • Shin Sugiyama
  • ,
  • Daiki Sakakibara
  • ,
  • Shungo Fukumoto

67
263
開始ページ
500
終了ページ
510
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1017/jog.2021.3
出版者・発行元
Cambridge University Press (CUP)

<title>Abstract</title>
As a result of climate warming, glacial meltwater discharge has been increasing in Greenland. During the summers of 2015 and 2016, there were rapid increases in discharge from Qaanaaq Glacier in northwestern Greenland. These discharges resulted in floods that destroyed the road linking the settlement of Qaanaaq to Qaanaaq Airport. Field measurements were performed and a numerical model of glacier runoff was developed to quantify these discharges. The high discharge associated with the 2015 flood, estimated at 9.1 m3 s−1 (hourly mean), resulted from intensive glacier melting due to warm air temperature and strong winds, while the high discharge associated with the 2016 flood resulted from heavy rainfall (90 mm d−1) that led to a peak discharge estimated at 19.9 m3 s−1. The developed model, when used to investigate future glacier runoff under warming conditions, revealed a nonlinear increase in glacial melt with increasing temperature. Additionally, the model forecasted a threefold increase in total summer discharge, owing to a 4 °C rise in temperature. Thus, this study quantified the impact of a changing climate on glacier runoff, which gives insight into future risks of flood hazards along the coast of Greenland.

リンク情報
DOI
https://doi.org/10.1017/jog.2021.3
URL
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143021000034
ID情報
  • DOI : 10.1017/jog.2021.3
  • ISSN : 0022-1430
  • eISSN : 1727-5652

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