Below are just a few ways our customers are using the miniDOT oxygen and temperature logger. If you are interested in any specific application, please contact PME for more information and possibly a referral to the group using the miniDOT loggers.
1. Arabian Gulf: Mixing in the Arabian Gulf
Researchers at the Department of Marine Sciences, Oceanography at Texas A&M University are using the miniDOT loggers and Cylcops-7 Loggers to understand how water-borne substances (oil derivatives, sewage, pollutants, nutrients, sediments) are transported and dispersed within shallow water environments like the Arabian Gulf. Weather events, such as Shamals (a northwesterly wind that blows over Iraq and the Persian Gulf) can drive mixing processes that affect fragile ecosystems. A better understanding of these events will be invaluable to policy makers for managing natural resources in the area.
For this study, the miniDOT loggers collected oxygen and temperature measurements and the Cyclops-7 Logger collected Chlorophyll A measurements. Images and information provided by Dr. Ayal Anis at Texas A&M University.
2. Arctic: miniDOT use in the Arctic
Researchers at the Centre for Northern Studies at Laval University deployed three miniDOT loggers in a small Arctic lake for one year between 2012 and 2013. The loggers were moored at depths of 1.0 meter, 2.0 meters and 3.5 meters from the surface of the lake. The logger located at the surface of the lake functioned at near-frozen temperatures over the course of the year. These loggers sampled every 10 minutes and produced excellent data for the researchers.
Images and information provided by Bethany Deshpande, a doctoral student at the Universite Laval, Canada. This research is conducted by Bethany Deshpande and her supervisor, Dr. Warwick F. Vincent.
3. Free Water Metabolism
miniDOT loggers are used by a group of limnologists at the University of Wisconsin-Madison in order to estimate free water metabolism. During the Summer of 2011, they placed the miniDOT loggers in large glass bottles incubated in lake water to estimate free water metabolism while removing much of the physical noise. The bottles were filled with lake water from various depths and then suspended with a miniDOT at those depths for 48 hours. Using this method, they were able to tease out metalimnetic production and respiration in a location of the water column that had been dominated by internal waves when using a suspended sonde.
Information provided by Jordan Read with the University of Wisconsin-Madison, Environmental Fluid Mechanics Lab.