Falkor 2013 Multibeam Echosounder System Review

The transducer impedances are similar to baseline measurements with exception of the EM710 transducer impedances. This latter potential issue is being examined with the manufacturer but we do not feel, after consultation with the manufacturer, that there is any cause for concern. Noise levels have not changed significantly since the 2012 trials in “Science” mode. Review of the noise results by Tim Gates indicates that there are some modules reporting higher noise levels compared to measurements taken by Gates in early 2012 and may warrant a closer investigation

Falkor 2012 Multibeam Echosounder System Review

RV Falkor is equipped with Kongsberg Maritime (KM) EM302 and EM710 multibeam echosounders (MBES). Both systems underwent Sea Acceptance Trials (SATs) in May 2012 in Sognefjord, Norway. The bathymetric and topographic constraints imposed by the fjord limited the ability to fully test the EM302. Additional system testing was conducted during a second set of trials while in transit from Newcastle-upon-Tyne, UK to Nuuk, Greenland in July 2012.

Thompson 2010 Sea Acceptance Report


A sea acceptance trial (SAT) was conducted to evaluate the performance of the EM302 multibeam echosounder (MBES) onboard the R/V Thomas G. Thompson in October 2010 off the coast of Washington state. Excellent sea conditions permitted continuous acquisition with all planned survey sites being successfully mapped. It is the intent of this report to document the results of the SAT and to provide recommendations on further improvements that can be made to maximize the performance and accuracy of the system for both bathymetric and acoustic backscatter measurements.

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