FN Archimer Export Format PT J TI Recommendations for improved and coherent acquisition and processing of backscatter data from seafloor-mapping sonars BT AF LAMARCHE, Geoffroy LURTON, Xavier AS 1:1;2:2; FF 1:;2:PDG-DFO-NSE-ASTI; C1 NIWA, 301 Evans Bay Parade, Wellington 6021, New Zealand. IFREMER, CS 10070, F-29280 Plouzane, France. C2 NIWA, NEW ZEALAND IFREMER, FRANCE SI BREST SE PDG-DFO-NSE-ASTI IN WOS Ifremer jusqu'en 2018 copubli-int-hors-europe IF 1.471 TC 47 UR https://archimer.ifremer.fr/doc/00385/49655/50179.pdf LA English DT Article DE ;Multibeam echosounders;Calibration;Reflectivity;Mapping;Seafloor AB Multibeam echosounders are becoming widespread for the purposes of seafloor bathymetry mapping, but the acquisition and the use of seafloor backscatter measurements, acquired simultaneously with the bathymetric data, are still insufficiently understood, controlled and standardized. This presents an obstacle to well-accepted, standardized analysis and application by end users. The Marine Geological and Biological Habitat Mapping group (Geohab.org) has long recognized the need for better coherence and common agreement on acquisition, processing and interpretation of seafloor backscatter data, and established the Backscatter Working Group (BSWG) in May 2013. This paper presents an overview of this initiative, the mandate, structure and program of the working group, and a synopsis of the BSWG Guidelines and Recommendations to date. The paper includes (1) an overview of the current status in sensors and techniques available in seafloor backscatter data from multibeam sonars; (2) the presentation of the BSWG structure and results; (3) recommendations to operators, end-users, sonar manufacturers, and software developers using sonar backscatter for seafloor-mapping applications, for best practice methods and approaches for data acquisition and processing; and (4) a discussion on the development needs for future systems and data processing. We propose for the first time a nomenclature of backscatter processing levels that affords a means to accurately and efficiently describe the data processing status, and to facilitate comparisons of final products from various origins. PY 2018 PD JUL SO Marine Geophysical Research SN 0025-3235 PU Springer VL 39 IS 1-2 UT 000430016500002 BP 5 EP 22 DI 10.1007/s11001-017-9315-6 ID 49655 ER EF