Aerial Surveys : seeking zones of thermal shock

Sometimes you need to be high up to see deep… into the ocean.
Nymphea Water has developed a range of techniques for the aerial location of springs, all of which are protected by international patents.

Planes to cover large areas
Underwater springs may be identified by the thermal differences they create on the surface. Fresh water being lighter than sea water naturally rises while retaining its temperature. Embedded infrared cameras record temperature differences at the surface of the sea (to ±1/10th of a degree). The images are then correlated using satellite positioning. Once a spot has been located, the pilot flies around the area a second time at a lower altitude to enhance the camera’s precision.
This is the advantage of aircraft over satellite. While it can only provide data with an accuracy of 20 meters in the infrared range, Nymphea Water’s equipment provide metric results.
Data acquisition is carried out at different times of the day to minimize interference (noise and other phenomena).

However, satellite images are analysed in different wave band. Chlorophyll and plancton activities related to the presence of fresh water send indicators to the surface. These can be detected by satellite if they are clear enough.