Flynn, K. M.. Institute for Computational Earth System Science, kflynn@icess.ucsb.edu
MacIntyre, S. M.. Marine Science Institute, sally@icess.ucsb.edu

 
MIXING POTENTIAL OF STORM-DRIVEN INTERNAL WAVES IN MONO LAKE, CALIFORNIA
 
We have observed episodic internal-wave activity and subsequent mixing events in Mono Lake. Our study, conducted during the current period of meromixis that began in 1995, has included intensive observations using thermistor chains and turbulence profilers as well as regular CTD profiling and continuous meteorological observations. Analysis of these data emphasizes the dynamic response of the lake to varying conditions of meteorological forcing and considers potential for nutrient transport. Spectral and descriptive analyses of wind, wave, and turbulence time-series are presented. In the winter and spring, intermittent storm events dominate the wind pattern. These events last from one to four days and sustained winds are typically 7-10 m/s but can be as high as 12-18 m/s. In contrast, summer conditions are characterized by a strong diurnal wind pattern and fall conditions are characterized by relative calm winds (< 5/s) with intermittent periods of stronger winds (generally still < 10 m/s) lasting from 1-3 days. The winter and spring conditions - with sustained strong wind events and cooler, denser, surface waters - have a high potential for wave-induced mixing deep in the lake and hence also for the transport of nutrients from the hypolimnion to the surface waters of the lake.
 
Day: Thursday, Feb. 4
Time: 09:45 - 10:00am
Location: Eldorado Hotel
 
Code: SS52TH0945E