This article has This been published in or collective redistirbution of any portion of this article by photocopy machine, reposting, or other means is permitted only with the approval of The approval portionthe ofwith any permitted articleonly photocopy by is of machine, reposting, this means or collective or other redistirbution NURC: CELEBRATING 50 YEARS OF InTErnATIONAL PARTNERSHIPS IN OcEAN RESEArcH AND OpERATIONS Oceanography , Volume 21, Number 2, a quarterly journal of The 21, Number 2, a quarterly , Volume By ALESSANDRO BARBAGELATA, PIERO GuErrINI, AND LuIGI TrOIANO Thirty Years of O ceanography ceanography S TOWED ArrAYS The 2008 by Copyright ociety. at NURC The NATO Undersea Research Centre THE FIRST HyDROPHONE the experimental array for the US Office O ceanography ceanography O (NURC), from its earliest history, has ArrAYS AT NURC of Naval Research (ONR), which loaned ceanography studied a very broad range of under- One of the first NURC systems to exploit it to NURC to evaluate its performance S water acoustic phenomena and their the desirable characteristics gained in the relatively shallow continental ociety. S ociety. ociety. A application to surveillance, detection, by grouping several omnidirectional shelf regions. Table 1 outlines array reproduction, systemmatic Republication, article for use and research. this copy in teaching to granted ll rights reserved. is Permission S oceanography and, more recently, port elements into arrays (see Box 2) was characteristics. or Th e
[email protected] to: correspondence all end protection. The principal measurement the MEDUSA system (Mediterranean The array was calibrated (Figure 2) device used to probe acoustic signatures Experimental Deep Underwater and tested in the autumn of 1978.