The Acoustically Navigated Geological Underwater Survey (ANGUS) is a deep-towed still-camera sled operated by the Woods Hole Oceanographic Institute and can be fitted with three 35 mm color cameras with 400 feet (120 m) of film. It is capable of working in depths up to 20,000 feet (6,100 m). and can remain in the deep ocean for work sessions of 12 to 14 hours at a time, taking up to 16,000 photographs in one session.
It has been used to search for and photograph underground geysers and the creatures living near them and is equipped with a heat sensor to alert the tether-ship when it passes a one. It was also used, along with Argo, to survey the wreckage of the Titanic.
Famous quotes containing the words geological and/or survey:
“The crystal sphere of thought is as concentrical as the geological structure of the globe. As our soils and rocks lie in strata, concentric strata, so do all men’s thinkings run laterally, never vertically.”
—Ralph Waldo Emerson (1803–1882)
“By contrast with history, evolution is an unconscious process. Another, and perhaps a better way of putting it would be to say that evolution is a natural process, history a human one.... Insofar as we treat man as a part of nature—for instance in a biological survey of evolution—we are precisely not treating him as a historical being. As a historically developing being, he is set over against nature, both as a knower and as a doer.”
—Owen Barfield (b. 1898)