Thermal infrared image of groundwater discharging into surface water

Thermal infrared image indicates water temperature, where warmer temperatures are represented as yellow and cooler temperatures as purple. The image presents an area where a relatively warm groundwater seep is discharing along the edge of a relatively cooler stream, and the water is mixing. The temperature range displayed is approximately 1 to 8 degrees Celsius. The area at the center of the image is about 2 meters across.