As floating debris or flotsam (regional: Flotsam , Geschwemmsel or Teek ) are called objects in the sea or inland waters float on the water surface. This includes natural materials (branches, aquatic plants such as seaweed ), garbage (plastic waste, metal cans, plastic bottles), wreckage and lost cargo from ships. Flotsam on the open sea is also called Seetrift (sea-poisonous goods). In flushed flotsam of natural origin is dried as a fertilizer used
Risks and economic damage
Floating debris can cause considerable damage to water management systems (e.g. hydropower plants ). The operators of such systems protect themselves against flotsam by attaching a so-called " flotsam rake " in front of the inlet , on which the flotsam sticks and has to be removed regularly.
During floods , debris often collects on bridges , which is also known as blockage . There is increased pressure on the structure. The load can become so great that the bridge is destroyed, although it would have withstood a comparable water level and a similar current without being damaged by floating debris. The removal of accumulated floating debris is therefore an important measure for maintaining a bridge. When building torrents, a debris collector is therefore often placed in front of bridges to reduce the risk of debris.
Previously presented flotsam and jetsam of sunken ships (wreckage) an additional source of income for residents of the country strokes is near which often ships were lost or stranded. This was sometimes forced, for example by manipulating beacons .
A separate branch of research in oceanography deals with the observation of floating debris migrations over long distances on the oceans in order to gain more precise knowledge about the course and speed of ocean currents .
- Large quantities of Treibsel set on fire in Dithmarschen , NDR, March 26, 2020