Method of Operation
- Deployment phase: The instrument package is dropped to the sea floor. The principal components of the package are the anchor weight which allows the assembly to sink and then remain firmly on the sea floor, the acoustic release device which can receive a remote commands from the control station to drop the anchor weight, the instrument or payload which is to be deployed and later recovered, and a flotation device which keeps the assembly upright on the sea floor, and at the end of the deployment allows it to return to the surface.
- Operations phase: The instrument package is on the sea floor. This phase can last anywhere from minutes to several years, depending on the application. The instrument package is now typically unattended, performing its observations or work.
- Recovery phase: During this phase, an acoustic command is issued by the control station. The control station is typically on a boat, but may also be a device operated by a diver or mounted on an ROV. Upon receipt and verification, the acoustic release triggers a mechanism that drops the anchor weight. The remainder of the instrumentation package is now carried back to the surface by the flotation device for recovery.
Read more about this topic: Acoustic Release
Famous quotes containing the words method of, method and/or operation:
“in the absence of feet, “a method of conclusions”;
“a knowledge of principles,”
in the curious phenomenon of your occipital horn.”
—Marianne Moore (1887–1972)
“Women stand related to beautiful nature around us, and the enamoured youth mixes their form with moon and stars, with woods and waters, and the pomp of summer. They heal us of awkwardness by their words and looks. We observe their intellectual influence on the most serious student. They refine and clear his mind: teach him to put a pleasing method into what is dry and difficult.”
—Ralph Waldo Emerson (1803–1882)
“An absolute can only be given in an intuition, while all the rest has to do with analysis. We call intuition here the sympathy by which one is transported into the interior of an object in order to coincide with what there is unique and consequently inexpressible in it. Analysis, on the contrary, is the operation which reduces the object to elements already known.”
—Henri Bergson (1859–1941)