and even to carry small experiments in situ. See also Argo (oceanography) SOFAR channel Ocean acoustic tomography References External links RAFOS Float – Ocean Instruments http://www.beyonddiscovery.org/content/view.page.asp?I=224 https://web.archive.org/web/20110205111415/http://www.beyonddiscovery.org/content/view.article.asp?a=219 http://www.dosits.org/people/researchphysics/measurecurrents/ http://www.whoi.edu/instruments/viewInstrument.do?id=1061 http://www.argo.ucsd.edu/index.html Oceanography