Yukon River Watershed
Between 11/1/2003 and 11/15/2003 a flooding event occurred. Graphs of the wind speed and direction collected during this time period have been provided and can be viewed by clicking on the appropriate links below. A wind speed and direction reading is taken every 5-seconds, beginning at the top of the hour. The Instantaneous data is the actual value taken at the top of the hour over a period the two week period. The hourly averages are the 5-second values averaged over a one hour period, beginning at the top of the hour.
- NOAA Kawanak Pass 2003 Tidal Predictions:
Using the graphs and links, answer the following questions.
- Using the graphs above, describe the wind speed trends for both instantaneous and hourly wind speed and direction.
- Were there any similarities between the wind speed and direction graphs?
- What is a tide?
- What causes a tide?
- What is a tidal range/fluctuation?
- Using the tidal predictions for Kawanak Pass entrance, Yukon River,what was the average tidal fluctuation, or range, in Nunam Iqua?
- Are there any obvious trends in the tidal predications for Kawanak Pass?
- What were tidal fluctuation for the time period of 11/1/03 through 11/15/03?
- Can winds impact tide levels?
- What directions are important for winds to impact water levels and tidal impacts?
- Can winds decrease tidal levels?
- What is barometric pressure?
- Can barometric pressure impact tide levels?
- What atmospheric and tidal conditions would result in the worst flooding conditions?
- What do the village elders say about the causes of floods in the village?
- Using the tidal predictions for Kawanak Pass entrance, Yukon River, what were the atmospheric and tidal conditions during the recent flooding event at Nunam Iqua?