called jasco research ltd. type private industry engineering and technical services founded victoria british columbia canada 1981 1981 founder joseph a. scrimger headquarters halifax nova scotia canada number of locations 8 2014 area served worldwide key people scott carr ceo david hannay cso roberto racca cco website www.jasco.com jasco applied sciences is a group of international companies that provides services and manufactures equipment to measure underwater sound . jasco provides services on projects worldwide operating out of 8 locations internationally to the oil and gas marine construction energy fisheries and defence sectors . the head office is located in halifax ns canada . jasco employs acousticians bioacousticians physicists marine mammal scientists engineers and project managers . contents 1 services 2 products 2.1 amar g3 3 references 4 external links services edit the firm deploys calibrated sound recorders to measure underwater sound levels . projects may be long term wide area acoustic monitoring programs 1 2 or short term measurements of industrial sources or marine vessels . the data collected are then analysed to determine the acoustic signatures of the sound sources characterize the ambient noise conditions at the measurement site 3 or detect and identify marine mammal vocalizations . 4 5 jasco measures underwater anthropogenic noise from many sources including pile driving seismic survey operations marine vessels 6 construction offshore and nearshore high frequency sonar such as side scan sonar multibeam sonar and echosounders 7 the firm also conducts numerical modelling studies to predict the underwater sound field of noise sources which are often required for environmental impact assessments of industrial projects . the large sound levels produced by activities such as pile driving and seismic surveys can disturb and even injure marine mammals 8 and fish . the results of underwater acoustic modelling are commonly expressed as safety radii or exclusion zone radii that are used by marine mammal observers during operations to ensure animals are not exposed to harmful levels of noise . 9 results are also provided as contour maps of the sound levels around the noise source . these maps can be used to assess or mitigate the impacts of the noise on marine mammals 10 fish and other aquatic wildlife . products edit amar g3 edit the autonomous multichannel acoustic recorder generation 3 amar g3 is an underwater acoustic and oceanographic data recorder . it consists of recording electronics housed inside a watertight pressure housing . the amar can be connected to up to 8 hydrophones sampled at 24 bit resolution at rates up to 128 khz and another high frequency hydrophone sampled at 16 bit resolution at rates up to 687.5 khz . 11 oceanographic sensors e.g. dissolved oxygen salinity acidity temperature can also be connected allowing the system to be used as a mini ocean observatory . two amars are used on the east node of the venus ocean observatory in the strait of georgia providing publicly available underwater sound recordings . 12 references edit hannay david e. ; delarue julien ; mouy xavier ; martin bruce s. ; leary del ; oswald julie n. ; vallarta jonathan 2013 . marine mammal acoustic detections in the northeastern chukchi sea september 2007 july 2011 . continental shelf research . 67 127 146 . doi 10.1016 j.csr .2013.07.009 . shell gulf of mexico inc. april 2012 . marine mammal monitoring and mitigation plan for exploration drilling of selected lease areas in the alaskan chukchi sea pdf . noaa fisheries . external link in publisher help jasco applied sciences environnement illimit inc. january 2013 . simandou project guinea port component underwater noise conditions baseline report pdf . rio tinto simandou . external link in publisher help foreshew jennifer 18 june 2013 . great barrier reef becomes a sounding board for science . the australian . mouy xavier ; hannay david ; zykov mikhail ; martin bruce 2012 . tracking of pacific walruses in the chukchi sea using a single hydrophone . journal of the acoustical society of america . 131 2 1349 . doi 10.1121 1.3675008 . external link in journal help erbe christine 2013 . underwater noise of small personal watercraft jet skis . journal of the acoustical society of america . 133 4 el326 . doi 10.1121 1.4795220 . external link in journal help warner graham ; mccrodan andrew ; macdonnell jeff ; lumsden eric 2012 . underwater sound measurements of high frequency sonars using a seabedmounted recorder . journal of the canadian acoustical association . 40 3 86 87 . marine mammals and noise a sound approach to research and management pdf . a report to congress from the marine mammal commission . march 2007 . shell gulf of mexico inc. april 2012 . marine mammal monitoring and mitigation plan for exploration drilling of selected lease areas in the alaskan chukchi sea pdf . noaa fisheries . external link in publisher help aly thomson 20 january 2014 . reduce seismic testing noises to protect whales study recommends . the canadian press . cbc news . amar g3 autonomous multichannel acoustic recorder generation 3 . jasco applied sciences . venus data archive . external links edit jasco official website retrieved from https en.wikipedia.org w index.php title jasco applied sciences & oldid 689382143 categories acousticsinstrument making corporationscompanies established in 1981technology companies of canadacanadian brandshidden categories cs1 errors external links navigation menu personal tools not logged intalkcontributionscreate accountlog in namespaces article talk variants views read edit view history more search navigation main pagecontentsfeatured contentcurrent eventsrandom articledonate to wikipediawikipedia store interaction helpabout wikipediacommunity portalrecent changescontact page tools what links hererelated changesupload filespecial pagespermanent linkpage informationwikidata itemcite this page print export create a bookdownload as pdfprintable version languages add links this page was last modified on 6 november 2015 at 19 55 . text is available under the creative commons attribution sharealike license ; 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