FN Archimer Export Format
PT J
TI Control of the repeatability of high frequency multibeam echosounder backscatter by using natural reference areas
BT 
AF ROCHE, Marc
   DEGRENDELE, Koen
   VRIGNAUD, Christophe
   LOYER, Sophie
   LE BAS, Tim
   AUGUSTIN, Jean-Marie
   LURTON, Xavier
AS 1:1;2:1;3:2;4:2;5:3;6:4;7:4;
FF 1:;2:;3:;4:;5:;6:PDG-DFO-NSE-ASTI;7:PDG-DFO-NSE-ASTI;
C1 FPS Econ, Continental Shelf Serv, B-1000 Brussels, Belgium.
   SHOM, Brest, France.
   Natl Oceanog Ctr, Southampton, Hants, England.
   Inst Francais Rech Exploitat Mer Ifremer, Brest, France.
C2 FPS ECON, BELGIUM
   SHOM, FRANCE
   NOC, UK
   IFREMER, FRANCE
SI BREST
SE PDG-DFO-NSE-ASTI
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-europe
IF 1.471
TC 27
UR https://archimer.ifremer.fr/doc/00422/53384/54234.pdf
LA English
DT Article
DE ;Multibeam echosounder;Seafloor backscatter;Repeatability;Calibration;Reference area;Monitoring
AB The increased use of backscatter measurements in time series for environmental monitoring necessitates the comparability of individual results. With the current lack of pre-calibrated multibeam echosounder systems for absolute backscatter measurement, a pragmatic solution is the use of natural reference areas for ensuring regular assessment of the backscatter measurement repeatability. This method mainly relies on the assumption of a sufficiently stable reference area regarding its backscatter signature. The aptitude of a natural area to provide a stable and uniform backscatter response must be carefully considered and demonstrated by a sufficiently long time-series of measurements. Furthermore, this approach requires a strict control of the acquisition and processing parameters. If all these conditions are met, stability check and relative calibration of a system are possible by comparison with the averaged backscatter values for the area. Based on a common multibeam echosounder and sampling campaign completed by available bathymetric and backscatter time series, the suitability as a backscatter reference area of three different candidates was evaluated. Two among them, Carré Renard and Kwinte, prove to be excellent choices, while the third one, Western Solent, lacks sufficient data over time, but remains a valuable candidate. The case studies and the available backscatter data on these areas prove the applicability of this method. The expansion of the number of commonly used reference areas and the growth of the number of multibeam echosounder controlled thereon could greatly contribute to the further development of quantitative applications based on multibeam echosounder backscatter measurements. 
PY 2018
PD JUL
SO Marine Geophysical Research
SN 0025-3235
PU Springer
VL 39
IS 1-2
UT 000430016500007
BP 89
EP 104
DI 10.1007/s11001-018-9343-x
ID 53384
ER

EF