Dear Colleagues, I would be interested to know whether anyone is aware of measurements and might be able to share information on the full spectral properties, including frequencies below the center frequencies of the higher (120, 200 kHz etc) signal components of a SIMRAD EK60 scientific echo sounder? We are interested to assess the audibility of these signals to marine mammals and are aware of the paper by Deng et al. 2014, measuring other types of commercial echo sounders, but so far couldn't find similar data for the EK60. Any information would be much appreciated (denise.risch@sams.ac.uk). Thanks very much. Denise ------------------------------------------------- Dr Denise Risch Postdoctoral Research Associate SAMS Scottish Marine Institute Oban, Argyll Scotland, PA37 1QA email: denise.risch@sams.ac.uk phone: +44 / (0) 1631 559415 mobile: +44 / (0) 7899 425935 The Scottish Association for Marine Science (SAMS) is registered in Scotland as a Company Limited by Guarantee (SC009292) and is a registered charity (9206). SAMS has two actively trading wholly owned subsidiary companies: SAMS Research Services Ltd (SC224404) and SAMS Ltd (SC306912). All Companies in the group are registered in Scotland and share a registered office at Scottish Marine Institute, Oban Argyll PA37 1QA. The content of this message may contain personal views which are not the views of SAMS unless specifically stated. Please note that all email traffic is monitored for purposes of security and spam filtering. As such individual emails may be examined in more detail.